Briggs Stratton Heat Pump 13D1 19 User Manual

OM−05463−OE01  
February 4, 2003  
INSTALLATION, OPERATION,  
AND MAINTENANCE MANUAL  
WITH PARTS LIST  
10 SERIES PUMPS  
MODELS  
13D1−19 and  
13D1−(19) PPO  
THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO  
GORMAN-RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA  
www.gormanrupp.com  
Printed in U.S.A.  
ECopyright by the Gorman-Rupp Company  
 
TABLE OF CONTENTS  
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE I − 1  
SAFETY - SECTION A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE A − 1  
INSTALLATION − SECTION B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE B − 1  
Pump Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
PREINSTALLATION INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
POSITIONING PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
SUCTION AND DISCHARGE PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Line Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Connections to Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
SUCTION LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Strainers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Suction Lines In Sumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Suction Line Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
DISCHARGE LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Siphoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Bypass Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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OPERATION − SECTION C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE C − 1  
PRIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
STARTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Lines With a Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Lines Without a Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Liquid Temperature And Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Strainer Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Pump Vacuum Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
STOPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Cold Weather Preservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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TROUBLESHOOTING − SECTION D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE D − 1  
PUMP MAINTENANCE AND REPAIR - SECTION E . . . . . . . . . . . . . . . . . PAGE E − 1  
STANDARD PERFORMANCE CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
PARTS LISTS:  
PAGE E − 1  
PAGE E − 3  
Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
i
 
TABLE OF CONTENTS  
(continued)  
Pump Parts Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . .  
Suction Check Valve Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Back Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Pump Casing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Impeller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Seal Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Seal Reassembly and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Impeller Installation And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Pump Casing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Back Cover Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Suction Check Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Final Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Seal Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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ii  
 
10 SERIES  
OM−05463  
INTRODUCTION  
Thank You for purchasing a Gorman-Rupp pump.  
Read this manual carefully to learn how to safely  
install and operate your pump. Failure to do so  
could result in personal injury or damage to the  
pump. This Installation, Operation, and Mainte-  
nance manual is designed to help you achieve the  
best performance and longest life from your Gor-  
man-Rupp pump.  
This pump is a 10 Series, semi-open impeller, self-  
priming centrifugal model with a suction check  
valve. It is close-coupled to a single cylinder Briggs  
and Stratton gasoline engine. The pump is de-  
signed for handling dirty water containing speci-  
fied entrained solids. The basic material of con-  
struction for wetted parts is aluminum, with ductile  
iron impeller and steel wearing parts.  
If there are any questions regarding the pump or its application which are not covered in this manual or in  
other literature accompanying this unit, please contact your Gorman-Rupp distributor, or write:  
The Gorman-RuppGoCrommapna-Rnuypp ofoCr anada Limited  
P.O. Box 1217  
70 Burwell Road  
Mansfield, Ohio 449S0t1. Th1o2m17as, Ontario N5P 3R7  
For information or technical assistance on the engine, contact the engine manufacturer’s local dealer or  
representative.  
The following are used to alert maintenance personnel to procedures which require special attention, to  
those which could damage equipment, and to those which could be dangerous to personnel:  
Immediate hazards which WILL result in  
severe personal injury or death. These  
instructions describe the procedure re-  
quired and the injury which will result  
from failure to follow the procedure.  
Hazards or unsafe practices which COULD  
result in minor personal injury or product  
or property damage. These instructions  
describe the requirements and the possi-  
ble damage which could result from failure  
to follow the procedure.  
Hazards or unsafe practices which  
NOTE  
COULD result in severe personal injury  
Instructions to aid in installation, operation, and  
or death. These instructions describe  
the procedure required and the injury  
which could result from failure to follow  
the procedure.  
maintenance or which clarify a procedure.  
INTRODUCTION  
PAGE I − 1  
 
10 SERIES  
OM−05463  
SAFETY − SECTION A  
This information applies to 10 Series en-  
gine driven pumps. Refer to the manual  
accompanying the engine before at-  
tempting to begin operation.  
solids. Do not attempt to pump volatile,  
corrosive, or flammable liquids which  
may damage the pump or endanger per-  
sonnel as a result of pump failure.  
Because pump installations are seldom  
identical, this manual cannot possibly  
provide detailed instructions and pre-  
cautions for each specific application.  
Therefore, it is the owner/installer’s re-  
sponsibility to ensure that applications  
not addressed in this manual are per-  
formed only after establishing that nei-  
ther operator safety nor pump integrity  
are compromised by the installation.  
Use lifting and moving equipment in  
good repair and with adequate capacity  
to prevent injuries to personnel or dam-  
age to equipment. Suction and dis-  
charge hoses and piping must be re-  
moved from the pump before lifting.  
After the pump has been positioned,  
make certain that the pump and all pip-  
ing connections are tight, properly sup-  
ported and secure before operation.  
Before attempting to open or service the  
pump:  
1. Familiarize yourself with this man-  
ual.  
2. Shut down the engine and take  
precautions to ensure that the  
pump will remain inoperative.  
3. Allow the pump to completely cool  
if overheated.  
Do not operate the pump against a  
closed discharge valve for long periods  
of time. If operated against a closed dis-  
charge valve, pump components will  
deteriorate, and the liquid could come  
to a boil, build pressure, and cause the  
pump casing to rupture or explode.  
4. Check the temperature before  
opening any covers, plates, or  
plugs.  
5. Close the suction and discharge  
valves.  
6. Vent the pump slowly and cau-  
tiously.  
7. Drain the pump.  
Do not remove plates, covers, gauges,  
pipe plugs, or fittings from an over-  
heated pump. Vapor pressure within the  
pump can cause parts being disen-  
gaged to be ejected with great force. Al-  
low the pump to cool before servicing.  
This pump is designed to handle dirty  
water containing specified entrained  
SAFETY  
PAGE A − 1  
 
10 SERIES  
OM−05463  
Do not operate an internal combustion  
engine in an explosive atmosphere.  
When operating internal combustion  
engines in an enclosed area, make cer-  
tain that exhaust fumes are piped to the  
outside. These fumes contain carbon  
monoxide, a deadly gas that is color-  
less, tasteless, and odorless.  
Never tamper with the governor to gain  
more power. The governor establishes  
safe operating limits that should not be  
exceeded. The maximum continuous  
operating speed for this pump is 3600  
RPM.  
Fuel used by internal combustion en-  
gines presents an extreme explosion  
and fire hazard. Make certain that all  
fuel lines are securely connected and  
free of leaks. Never refuel a hot or run-  
ning engine. Avoid overfilling the fuel  
tank. Always use the correct type of fuel.  
PAGE A − 2  
SAFETY  
 
10 SERIES  
OM−05463  
INSTALLATION − SECTION B  
Review all SAFETY information in Section A.  
specific application. Since the pressure supplied  
to the pump is critical to performance and safety,  
be sure to limit the incoming pressure to 50% of the  
maximum permissible operating pressure as  
shown on the pump performance curve (see Sec-  
tion E, Page 1).  
Since pump installations are seldom identical, this  
section offers only general recommendations and  
practices required to inspect, position, and ar-  
range the pump and piping.  
Most of the information pertains to a standard  
static lift application where the pump is positioned  
above the free level of liquid to be pumped.  
For further assistance, contact your Gorman-Rupp  
distributor or the Gorman-Rupp Company.  
Pump Dimensions  
If installed in a flooded suction application where  
the liquid is supplied to the pump under pressure,  
some of the information such as mounting, line  
configuration, and priming must be tailored to the  
See Figure 1 for the approximate physical dimen-  
sions of this pump.  
OUTLINE DRAWING  
Figure 1. Pump Models 13D1−19  
a. Inspect the pump and engine for cracks,  
PREINSTALLATION INSPECTION  
dents, damaged threads, and other obvious  
damage.  
The pump assembly was inspected and tested be-  
fore shipment from the factory. Before installation,  
inspect the pump for damage which may have oc-  
curred during shipment. Check as follows:  
b. Check for and tighten loose attaching hard-  
ware. Since gaskets tend to shrink after dry-  
ing, check for loose hardware at mating sur-  
faces.  
INSTALLATION  
PAGE B − 1  
 
OM−05463  
10 SERIES  
c. Carefully read all tags, decals, and markings  
on the pump assembly, and perform all duties  
indicated.  
The pump assembly can be seriously  
damaged if the cables or chains used to lift  
and move the unit are improperly wrapped  
around the pump.  
d. Check levels and lubricate as necessary. Re-  
fer to LUBRICATION in the MAINTENANCE  
AND REPAIR section of this manual and per-  
form duties as instructed.  
Mounting  
e. If the pump and engine have been stored for  
more than 12 months, some of the compo-  
nents or lubricants may have exceeded their  
maximum shelf life. These must be inspected  
or replaced to ensure maximum pump serv-  
ice.  
Locate the pump in an accessible place as close as  
practical to the liquid being pumped. Level mount-  
ing is essential for proper operation.  
The pump may have to be supported or shimmed  
to provide for level operation or to eliminate vibra-  
tion.  
If the maximum shelf life has been exceeded, or if  
anything appears to be abnormal, contact your  
Gorman-Rupp distributor or the factory to deter-  
mine the repair or updating policy. Do not put the  
pump into service until appropriate action has  
been taken.  
To ensure sufficient lubrication and fuel supply to  
the engine, do not position the pump and engine  
more than 15_ off horizontal for continuous opera-  
tion. The pump and engine may be positioned up  
to 30_ off horizontal for intermittent operation  
only; however, the engine manufacturer should be  
consulted for continuous operation at angles  
greater than 15_.  
POSITIONING PUMP  
Clearance  
When positioning the pump, allow a minimum  
clearance of 18 inches (457 mm) in front of the  
back cover to permit removal of the cover and easy  
access to the pump interior.  
Use lifting and moving equipment in  
good repair and with adequate capacity  
to prevent injuries to personnel or dam-  
age to equipment. The bail is intended  
for use in lifting the pump assembly  
only. Suction and discharge hoses and  
piping must be removed from the pump  
before lifting.  
SUCTION AND DISCHARGE PIPING  
Pump performance is adversely effected by in-  
creased suction lift, discharge elevation, and fric-  
tion losses. See the performance curve and notes  
on Page E-1 to be sure your overall application al-  
lows pump to operate within the safe operation  
range.  
Lifting  
Use lifting equipment with a capacity of at least 650  
pounds (295 kg.). The pump weighs approxi-  
mately 130 pounds (59 kg.) not including the  
weight of accessories or suction and discharge  
piping. Customer installed equipment such as suc-  
tion and discharge piping must be removed before  
attempting to lift.  
Materials  
Either pipe or hose maybe used for suction and  
discharge lines; however, the materials must be  
compatible with the liquid being pumped. If hose is  
used in suction lines, it must be the rigid-wall, rein-  
PAGE B − 2  
INSTALLATION  
 
10 SERIES  
OM−05463  
forced type to prevent collapse under suction. Us-  
ing piping couplings in suction lines is not recom-  
mended.  
Fittings  
Suction lines should be the same size as the pump  
inlet. If reducers are used in suction lines, they  
should be the eccentric type, and should be in-  
stalled with the flat part of the reducers uppermost  
to avoid creating air pockets. Valves are not nor-  
mally used in suction lines, but if a valve is used,  
install it with the stem horizontal to avoid air pock-  
ets.  
Line Configuration  
Keep suction and discharge lines as straight as  
possible to minimize friction losses. Make mini-  
mum use of elbows and fittings, which substan-  
tially increase friction loss. If elbows are necessary,  
use the long-radius type to minimize friction loss.  
Strainers  
If a strainer is furnished with the pump, be certain  
to use it; any spherical solids which pass through a  
strainer furnished with the pump will also pass  
through the pump itself.  
Connections to Pump  
Before tightening a connecting flange, align it ex-  
actly with the pump port. Never pull a pipe line into  
place by tightening the flange bolts and/or cou-  
plings.  
If a strainer is not furnished with the pump, but is  
installed by the pump user, make certain that the  
total area of the openings in the strainer is at least  
three or four times the cross section of the suction  
line, and that the openings will not permit passage  
of solids larger than the solids handling capability  
of the pump.  
Lines near the pump must be independently sup-  
ported to avoid strain on the pump which could  
cause excessive vibration, decreased bearing life,  
and increased shaft and seal wear. If hose-type  
lines are used, they should have adequate support  
to secure them when filled with liquid and under  
pressure.  
This pump is designed to handle up to 1 1/2-inch  
(38,1 mm) diameter spherical solids.  
Sealing  
Gauges  
Since even a slight leak will affect priming, head,  
and capacity, especially when operating with a  
high suction lift, all connections in the suction line  
should be sealed with pipe dope to ensure an air-  
tight seal. Follow the sealant manufacturer’s rec-  
ommendations when selecting and applying the  
pipe dope. The pipe dope should be compatible  
with the liquid being pumped.  
Most pumps are drilled and tapped for installing  
discharge pressure and vacuum suction gauges. If  
these gauges are desired for pumps that are not  
tapped, drill and tap the suction and discharge  
lines not less than 18 inches (457 mm) from the  
suction and discharge ports and install the lines.  
Installation closer to the pump may result in erratic  
readings.  
Suction Lines In Sumps  
If a single suction line is installed in a sump, it  
should be positioned away from the wall of the  
sump at a distance equal to 1-1/2 times the diame-  
ter of the suction line.  
SUCTION LINES  
To avoid air pockets which could affect pump prim-  
ing, the suction line must be as short and direct as  
possible. When operation involves a suction lift, the  
line must always slope upward to the pump from  
the source of the liquid being pumped; if the line  
slopes down to the pump at any point along the  
suction run, air pockets will be created.  
If there is a liquid flow from an open pipe into the  
sump, the flow should be kept away from the suc-  
tion inlet because the inflow will carry air down into  
the sump, and air entering the suction line will re-  
duce pump efficiency.  
INSTALLATION  
PAGE B − 3  
 
OM−05463  
10 SERIES  
If it is necessary to position inflow close to the suc-  
tion inlet, install a baffle between the inflow and the  
suction inlet at a distance 1-1/2 times the diameter  
of the suction pipe. The baffle will allow entrained  
air to escape from the liquid before it is drawn into  
the suction inlet.  
Suction Line Positioning  
The depth of submergence of the suction line is  
critical to efficient pump operation. Figure 2 shows  
recommended minimum submergence vs. veloc-  
ity.  
NOTE  
The pipe submergence required may be reduced  
by installing a standard pipe increaser fitting at the  
end of the suction line. The larger opening size will  
reduce the inlet velocity. Calculate the required  
submergence using the following formula based  
on the increased opening size (area or diameter).  
If two suction lines are installed in a single sump,  
the flow paths may interact, reducing the efficiency  
of one or both pumps. To avoid this, position the  
suction inlets so that they are separated by a dis-  
tance equal to at least 3 times the diameter of the  
suction pipe.  
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity  
Valves  
DISCHARGE LINES  
If a throttling valve is desired in the discharge line,  
use a valve as large as the largest pipe to minimize  
friction losses. Never install a throttling valve in a  
suction line.  
Siphoning  
Do not terminate the discharge line at a level lower  
than that of the liquid being pumped unless a si-  
phon breaker is used in the line. Otherwise, a si-  
phoning action causing damage to the pump  
could result.  
A check valve in the discharge line is normally rec-  
ommended, but it is not necessary in low dis-  
charge head applications.  
PAGE B − 4  
INSTALLATION  
 
10 SERIES  
OM−05463  
With high discharge heads, it is recommended that  
a throttling valve and a system check valve be in-  
stalled in the discharge line to protect the pump  
from excessive shock pressure and reverse rota-  
tion when it is stopped.  
Bypass Lines  
If a system check valve is used due to high dis-  
charge head, it may be necessary to vent trapped  
air from the top of the pump during the priming  
process. This may be accomplished by installing a  
bypass line from the top of the pump, back to the  
source of liquid. The end of the bypass line must be  
submerged. The line must be large enough to pre-  
vent clogging, but not so large as to affect pump  
discharge capacity.  
If the application involves a high discharge  
head, gradually close the discharge  
throttling valve before stopping the pump.  
INSTALLATION  
PAGE B − 5  
 
OM−05463  
10 SERIES  
OPERATION − SECTION C  
Review all SAFETY information in Section A.  
Follow the instructions on all tags, labels and  
decals attached to the pump.  
Add liquid to the pump casing when:  
1. The pump is being put into service for the  
first time.  
2. The pump has not been used for a consider-  
able length of time.  
3. The liquid in the pump casing has evapo-  
rated.  
Once the pump casing has been filled, the pump  
will prime and reprime as necessary.  
This pump is designed to handle dirty  
water containing specified entrained  
solids. Do not attempt to pump volatile,  
corrosive, or flammable liquids which  
may damage the pump or endanger per-  
sonnel as a result of pump failure.  
After filling the pump casing, reinstall  
and tighten the fill plug. Do not attempt  
to operate the pump unless all connect-  
ing piping is securely installed. Other-  
wise, liquid in the pump forced out un-  
der pressure could cause injury to per-  
sonnel.  
Never tamper with the governor to gain  
more power. The governor establishes  
safe operating limits that should not be  
exceeded. The maximum continuous  
operating speed for this pump is 4000  
RPM.  
To fill the pump, remove the pump casing fill cover  
or fill plug in the top of the casing, and add clean  
liquid until the casing is filled. Replace the fill cover  
or fill plug before operating the pump.  
PRIMING  
STARTING  
Consult the operations manual furnished with the  
Install the pump and piping as described in IN-  
STALLATION. Make sure that the piping connec-  
tions are tight, and that the pump is securely  
mounted. Check that the pump is properly lubri-  
cated (see LUBRICATION in MAINTENANCE  
AND REPAIR).  
engine.  
OPERATION  
This pump is self-priming, but the pump should  
never be operated unless there is liquid in the  
pump casing.  
Pump speed and operating condition  
points must be within the continuous per-  
formance range shown on the curve. (See  
Section E, Page 1.)  
Lines With a Bypass  
Never operate this pump unless there is  
liquid in the pump casing. The pump will  
not prime when dry. Extended operation of  
a dry pump will destroy the seal assembly.  
Close the discharge throttling valve (if so  
equipped) so that the pump will not have to prime  
against the weight of the liquid in the discharge  
OPERATION  
PAGE C − 1  
 
OM−05463  
10 SERIES  
line. Air from the suction line will be discharged  
through the bypass line back to the wet well during  
the priming cycle. When the pump is fully primed  
and liquid is flowing steadily from the bypass line,  
open the discharge throttling valve. Liquid will then  
continue to circulate through the bypass line while  
the pump is in operation.  
Do not remove plates, covers, gauges,  
pipe plugs, or fittings from an over-  
heated pump. Vapor pressure within the  
pump can cause parts being disen-  
gaged to be ejected with great force. Al-  
low the pump to cool before servicing.  
Lines Without a Bypass  
Open all valves in the discharge line and start the  
engine. Priming is indicated by a positive reading  
on the discharge pressure gauge or by a quieter  
operation. The pump may not prime immediately  
because the suction line must first fill with liquid. If  
the pump fails to prime within five minutes, stop it  
and check the suction line for leaks.  
Strainer Check  
If a suction strainer has been shipped with the  
pump or installed by the user, check the strainer  
regularly, and clean it as necessary. The strainer  
should also be checked if pump flow rate begins to  
drop. If a vacuum suction gauge has been in-  
stalled, monitor and record the readings regularly  
to detect strainer blockage.  
After the pump has been primed, partially close the  
discharge line throttling valve in order to fill the line  
slowly and guard against excessive shock pres-  
sure which could damage pipe ends, gaskets,  
sprinkler heads, and any other fixtures connected  
to the line. When the discharge line is completely  
filled, adjust the throttling valve to the required flow  
rate.  
Never introduce air or steam pressure into the  
pump casing or piping to remove a blockage. This  
could result in personal injury or damage to the  
equipment. If backflushing is absolutely neces-  
sary, liquid pressure must be limited to 50% of the  
maximum permissible operating pressure shown  
on the pump performance curve (see Section E,  
Page 1).  
Leakage  
Pump Vacuum Check  
With the pump inoperative, install a vacuum gauge  
in the system, using pipe dope on the threads.  
Block the suction line and start the pump. At oper-  
ating speed the pump should pull a vacuum of 20  
inches (508 mm) or more of mercury. If it does not,  
check for air leaks in the seal, gasket, or discharge  
valve.  
No leakage should be visible at pump mating sur-  
faces, or at pump connections or fittings. Keep all  
line connections and fittings tight to maintain maxi-  
mum pump efficiency.  
Liquid Temperature And Overheating  
Open the suction line, and read the vacuum gauge  
with the pump primed and at operation speed.  
Shut off the pump. The vacuum gauge reading will  
immediately drop proportionate to static suction  
lift, and should then stabilize. If the vacuum reading  
falls off rapidly after stabilization, an air leak exists.  
Before checking for the source of the leak, check  
the point of installation of the vacuum gauge.  
The maximum liquid temperature for this pump is  
110_ F (43_C). Do not apply it at a higher operating  
temperature.  
Overheating can occur if operated with the valves  
in the suction or discharge lines closed. Operating  
against closed valves could bring the liquid to a  
boil, build pressure, and cause the pump to rup-  
ture or explode. If overheating occurs, stop the  
pump and allow it to cool before servicing it. Refill  
STOPPING  
Never halt the flow of liquid suddenly. If the liquid  
being pumped is stopped abruptly, damaging  
the pump casing with cool liquid.  
PAGE C − 2  
OPERATION  
 
OM−05463  
10 SERIES  
shock waves can be transmitted to the pump and  
piping system. Close all connecting valves slowly.  
Cold Weather Preservation  
In below freezing conditions, drain the pump to  
prevent damage from freezing. Also, clean out any  
solids by flushing with a hose. Operate the pump  
for approximately one minute; this will remove any  
remaining liquid that could freeze the pump rotat-  
ing parts. If the pump will be idle for more than a  
few hours, or if it has been pumping liquids con-  
taining a large amount of solids, drain the pump,  
and flush it thoroughly with clean water. To prevent  
large solids from clogging the drain port and pre-  
venting the pump from completely draining, insert  
a rod or stiff wire in the drain port, and agitate the  
liquid during the draining process. Clean out any  
remaining solids by flushing with a hose.  
On engine driven pumps, reduce the throttle  
speed slowly and allow the engine to idle briefly be-  
fore stopping.  
If the application involves a high discharge  
head, gradually close the discharge  
throttling valve before stopping the pump.  
After stopping the pump, remove the engine igni-  
tion key to ensure that the pump will remain inop-  
erative.  
OPERATION  
PAGE C − 3  
 
10 SERIES  
OM−05463  
TROUBLESHOOTING − SECTION D  
Review all SAFETY information in Section A.  
Before attempting to open or service the  
pump:  
1. Familiarize yourself with this manual.  
2. Shut down the engine and take pre-  
cautions to ensure that the pump will  
remain inoperative.  
3. Allow the pump to completely cool if  
overheated.  
4. Check the temperature before open-  
ing any covers, plates, or plugs.  
5. Close the suction and discharge  
valves.  
6. Vent the pump slowly and cautiously.  
7. Drain the pump.  
TROUBLE  
POSSIBLE CAUSE  
PROBABLE REMEDY  
Not enough liquid in casing.  
Add liquid to casing. See  
PRIMING.  
PUMP FAILS TO  
PRIME  
Suction check valve contaminated or Clean or replace check valve.  
damaged.  
Air leak in suction line.  
Correct leak.  
Lining of suction hose collapsed.  
Leaking or worn seal or pump gasket.  
Replace suction hose.  
Check pump vacuum. Replace  
leaking or worn seal or gasket.  
Suction lift or discharge head too high. Check piping installation and install  
bypass line if needed. See INSTAL-  
LATION.  
Strainer clogged.  
Check strainer and clean if neces-  
sary.  
TROUBLESHOOTING  
PAGE D − 1  
 
OM−05463  
TROUBLE  
10 SERIES  
POSSIBLE CAUSE  
PROBABLE REMEDY  
PUMP STOPS OR  
FAILS TO DELIVER  
RATED FLOW OR  
PRESSURE  
Air leak in suction line.  
Correct leak.  
Lining of suction hose collapsed.  
Replace suction hose.  
Leaking or worn seal or pump gasket.  
Check pump vacuum. Replace  
leaking or worn seal or gasket.  
Suction intake not submerged at  
proper level or sump too small.  
Check installation and correct  
submergence as needed.  
Impeller or other wearing parts worn  
or damaged.  
Replace worn or damaged parts.  
Check that impeller is properly  
centered and rotates freely.  
Strainer clogged.  
Check strainer and clean if neces-  
sary.  
Impeller clogged.  
Free impeller of debris.  
Suction lift or discharge head too high.  
Check piping installation and install  
bypass line if needed. See INSTAL-  
LATION.  
PUMP REQUIRES  
TOO MUCH  
POWER  
Pump speed too high.  
Check driver output; check that  
sheaves or couplings are correctly  
sized.  
Discharge head too low.  
Liquid solution too thick.  
Discharge flow too slow.  
Adjust discharge valve.  
Dilute if possible.  
PUMP CLOGS  
FREQUENTLY  
Open discharge valve fully to in-  
crease flow rate, and run engine at  
maximum governed speed.  
Suction check valve or foot valve Clean valve.  
clogged or binding.  
Discharge line clogged or restricted; Check discharge lines; straighten  
hose kinked.  
hose.  
EXCESSIVE NOISE  
Cavitation in pump.  
Reduce suction lift and/or friction  
losses in suction line. Record vac-  
uum and pressure gauge readings  
and consult local representative or  
factory.  
Pumping entrained air.  
Locate and eliminate source of air  
bubble.  
Pump or drive not securely mounted.  
Impeller clogged or damaged.  
Secure mounting hardware.  
Clean out debris; replace damaged  
parts.  
PAGE D − 2  
TROUBLESHOOTING  
 
10 SERIES  
OM−05463  
equipped) between regularly scheduled inspec-  
tions can indicate problems that can be corrected  
before system damage or catastrophic failure oc-  
curs. The appearance of wearing parts should also  
be documented at each inspection for comparison  
as well. Also, if records indicate that a certain part  
(such as the seal) fails at approximately the same  
duty cycle, the part can be checked and replaced  
before failure occurs, reducing unscheduled down  
time.  
PREVENTIVE MAINTENANCE  
Since pump applications are seldom identical, and  
pump wear is directly affected by such things as  
the abrasive qualities, pressure and temperature  
of the liquid being pumped, this section is intended  
only to provide general recommendations and  
practices for preventive maintenance. Regardless  
of the application however, following a routine pre-  
ventive maintenance schedule will help assure  
trouble-free performance and long life from your  
Gorman-Rupp pump. For specific questions con-  
cerning your application, contact your Gorman-  
Rupp distributor or the Gorman-Rupp Company.  
For new applications, a first inspection of wearing  
parts at 250 hours will give insight into the wear rate  
for your particular application. Subsequent inspec-  
tions should be performed at the intervals shown  
on the chart below. Critical applications should be  
inspected more frequently.  
Record keeping is an essential component of a  
good preventive maintenance program. Changes  
in suction and discharge gauge readings (if so  
Preventive Maintenance Schedule  
Service Interval*  
Item  
Daily  
Weekly Monthly  
Semi- Annually  
Annually  
General Condition (Temperature, Unusual  
Noises or Vibrations, Cracks, Leaks,  
Loose Hardware, Etc.)  
Pump Performance (Gauges, Speed, Flow)  
Bearing Lubrication  
I
I
I
R
R
Seal Lubrication (And Packing Adjustment,  
If So Equipped)  
V-Belts (If So Equipped)  
I
I
I
Air Release Valve Plunger Rod (If So Equipped)  
Front Impeller Clearance (Wear Plate)  
Rear Impeller Clearance (Seal Plate)  
Check Valve  
Pressure Relief Valve (If So Equipped)  
Pump and Driver Alignment  
Shaft Deflection  
C
I
I
I
C
I
I
Bearings  
Bearing Housing  
I
I
Piping  
Driver Lubrication − See Mfgr’s Literature  
I
Legend:  
I = Inspect, Clean, Adjust, Repair or Replace as Necessary  
C = Clean  
R = Replace  
* Service interval based on an intermittent duty cycle equal to approximately 4000 hours annually.  
Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.  
TROUBLESHOOTING  
PAGE D − 3  
 
10 SERIES  
OM−05463  
PUMP MAINTENANCE AND REPAIR - SECTION E  
MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK  
OPERATING PERFORMANCE.  
STANDARD PERFORMANCE FOR PUMP MODELS 13D1−19  
Based on 70_ F (21_ C) clear water at sea level  
with minimum suction lift. Since pump installations  
are seldom identical, your performance may be dif-  
ferent due to such factors as viscosity, specific  
Never tamper with the governor to gain  
more power. The governor establishes  
gravity, elevation, temperature, and impeller trim.  
safe operating limits that should not be  
exceeded. The maximum continuous  
operating speed for this pump is 3600  
RPM.  
If your pump serial number is followed by an ꢀN",  
your pump is NOT a standard production model.  
Contact the Gorman-Rupp Company to verify per-  
formance or part numbers.  
MAINTENANCE & REPAIR  
PAGE E − 1  
 
OM−05463  
10 SERIES  
SECTION DRAWING  
PARTSPAGE  
Figure 1. Pump Model 13D1−19  
PAGE E − 2  
MAINTENANCE & REPAIR  
 
10 SERIES  
OM−05463  
PARTS LIST  
Pump Models 13D1−19  
(From S/N 1259620 up)  
If your pump serial number is followed by an ꢀN", your pump is NOT a standard production model. Contact  
the Gorman-Rupp Company to verify part numbers.  
ITEM  
NO.  
PART  
NUMBER  
MAT’L  
CODE  
PART NAME  
QTY  
1
2
PUMP END ASSY  
13D1−(19) PPO  
29122−162  
41583−315  
48152−603  
B0504  
−−−  
−−−  
24150  
−−−  
15991  
15991  
−−−  
−−−  
15991  
15991  
−−−  
15991  
15991  
−−−  
1
1
1
1
4
4
4
4
2
2
2
4
2
2
BRIGGS & STRATTON 19 ENGINE  
ROLLOVER BASE  
3
4
RUBBER FOOT MTG KIT  
−HEX HD CAPSCREW  
−FLAT WASHER  
5
6
K05  
7
−RUBBER FOOT  
S1224  
8
−FLANGED HEX NUT  
FLAT WASHER  
21765−312  
KE05  
9
10  
11  
12  
13  
14  
HEX HD CAPSCREW  
FLANGED HEX NUT  
FLAT WASHER  
B0506  
21765−312  
KE06  
HEX HD CAPSCREW  
FLANGED HEX NUT  
B0605  
21765−314  
NOT SHOWN:  
WARNING DECAL  
2613FE  
2613FT  
6588AH  
45−011  
−−−  
−−−  
−−−  
−−−  
1
2
1
1
HAND CARRY DECAL  
PRIMING STICKER  
CAUTION-OIL DECAL  
OPTIONAL:  
WHEEL KIT ASSY  
GRP30−51  
−−−  
1
MAINTENANCE & REPAIR  
PAGE E − 3  
 
OM−05463  
10 SERIES  
SECTION DRAWING  
Figure 2. 13D1−(19) Pump Parts Only  
PAGE E − 4  
MAINTENANCE & REPAIR  
 
10 SERIES  
OM−05463  
PARTS LIST  
13D1−(19) Pump Parts Only  
ITEM PART NAME  
NO.  
PART  
NUMBER  
MAT’L  
CODE  
QTY  
ITEM PART NAME  
NO.  
PART  
NUMBER  
MAT’L  
CODE  
QTY  
1
PUMP CASING  
IMPELLER  
13304  
13040  
11060  
1
1
1
24  
25  
26  
27  
28  
29  
30  
31  
32  
LOCKWASHER  
HEX NUT  
J04  
15991  
15991  
15991  
15991  
15991  
2
2
2
2
2
1
1
4
1
D04  
2
3
4
5
13303H  
STUD  
C0808  
K08  
SEAL ASSY  
25285−855 −−−  
2X  
FLAT WASHER  
COVER WING NUT  
COVER PLATE ASSY  
−WARNING PLATE  
−DRIVE SCREW  
−BACK COVER PLATE  
IMP ADJ SHIM SET  
17090 REF  
BB08  
SPRING CENT WASHER 31161−043 17000  
1
42111−919 −−−  
2613EV 13990  
6
7
SHAFT SLEEVE  
FILL PLUG ASSY  
DISCHARGE FLANGE  
ST ELBOW  
2146L  
16000  
1
1
1
1
2
2
1
1
4
1
2
2
2
4
4
1
1
1
48271−063 −−−  
BM#04−03 17000  
NOT AVAILABLE  
8
13427  
RS48  
C0807  
D08  
13040  
11999  
15991  
15991  
20000  
9
33  
34  
35  
36  
37  
38  
39  
40  
41  
COVER PLATE GSKT  
SUCTION FLANGE  
STUD  
12369G  
13425  
C0807  
D08  
20000  
13040  
15991  
15991  
−−−  
1
1
2
2
1
1
1
1
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
STUD  
HEX NUT  
DISCH FLANGE GSKT  
NAME PLATE  
DRIVE SCREW  
INTERMEDIATE BRKT  
STUD  
13428  
HEX NUT  
38818−021 13990  
BM#04−03 17000  
38264−227 13040  
CHECK VALVE ASSY  
−SEMI TUB RIVET 1/4  
−VALVE WEIGHT  
−CV PLATE  
13426  
NOT AVAILABLE  
C0808  
K08  
15991  
15991  
15991  
15991  
15991  
11189B  
13424  
13433  
14990  
FLAT WASHER  
HEX NUT  
15990  
19070  
D08  
−SUCT HEAD GSKT  
HEX HD CAPSCREW  
LOCKWASHER  
B0605  
J06  
NOT SHOWN:  
STRAINER  
21  
22  
23  
INTERMEDIATE O-RING 25152−248 −−−  
4917  
24001  
−−−  
−−−  
1
1
1
SUCTION STICKER  
6588AG  
6588BJ  
WEAR PLATE  
2643B  
P06  
15990  
15079  
CASING DRAIN PLUG  
DISCHARGE STICKER  
INDICATES PARTS RECOMMENDED FOR STOCK  
NOTE: CHECK THE ENGINE MANUAL FOR THE SHAFT EXTENSION.  
MAINTENANCE & REPAIR  
PAGE E − 5  
 
OM−05463  
10 SERIES  
PUMP AND SEAL DISASSEMBLY  
AND REASSEMBLY  
4. Check the temperature before  
opening any covers, plates, or  
plugs.  
Review all SAFETY information in Section A.  
5. Close the suction and discharge  
valves.  
Follow the instructions on all tags, label and de-  
cals attached to the pump.  
6. Vent the pump slowly and cau-  
tiously.  
This pump requires little service due to its rugged,  
minimum-maintenance design. However, if it be-  
comes necessary to inspect or replace the wearing  
parts, follow these instructions which are keyed to  
the sectional views (see Figures 1 and 2) and the  
accompanying parts lists.  
7. Drain the pump.  
Use lifting and moving equipment in  
good repair and with adequate capacity  
to prevent injuries to personnel or dam-  
age to equipment. Suction and dis-  
charge hoses and piping must be re-  
moved from the pump before lifting.  
As described on the following pages, this manual  
will alert personnel to known procedures which re-  
quire special attention, to those which could dam-  
age equipment, and to those which could be dan-  
gerous to personnel. However, this manual cannot  
possibly anticipate and provide detailed precau-  
tions for every situation that might occur during  
maintenance of the unit. Therefore, it is the respon-  
sibility of the owner/maintenance personnel to en-  
sure that only safe, established maintenance pro-  
cedures are used, and that any procedures not ad-  
dressed in this manual are performedonly after es-  
tablishing that neither personal safety nor pump in-  
tegrity are compromised by such practices.  
Suction Check Valve Disassembly  
(Figure 2)  
Before attempting to service the pump, remove the  
pump casing drain plug (23) and drain the pump.  
Clean and reinstall the drain plug.  
To service the suction check valve, remove the suc-  
tion piping. Remove the nuts (36) securing the suc-  
tion flange (34) to the pump casing (1). Pull the  
check valve assembly (37) from the suction port.  
Before attempting to service the pump, shut down  
the engine and take precautions to ensure that it  
will remain inoperative. Close all valves in the suc-  
tion and discharge lines.  
If no further disassembly is required, see Suction  
Check Valve Installation.  
For engine disassembly and repair, consult the lit-  
erature supplied with the engine, or contact your  
local Honda engine representative.  
Back Cover Removal  
(Figure 2)  
The wear plate assembly (22) can be serviced after  
the back cover assembly (29) has been removed.  
Before attempting to open or service the  
pump:  
Remove the wing nuts and flat washers (27 and 28)  
securing the back cover to the casing. Pull the  
back cover and assembled wear plate from the  
pump casing. Remove the cover plate gasket (33)  
and clean the mating surfaces.  
1. Familiarize yourself with this man-  
ual.  
2. Shut down the engine and take  
precautions to ensure that the  
pump will remain inoperative.  
3. Allow the pump to completely cool  
if overheated.  
Inspect the wear plate and if replacement is re-  
quired, remove the hardware (24 and 25) securing  
it to the back cover.  
PAGE E − 6  
MAINTENANCE & REPAIR  
 
10 SERIES  
OM−05463  
Pump Casing Removal  
(Figure 2)  
NOTE  
The seal assembly may be removed without com-  
pletely disassembling the pump by using a pair of  
stiff wires with hooked ends to pull the seal station-  
ary seat out of the intermediate.  
To service the impeller or seal assembly, discon-  
nect the discharge piping. See Figure 1 and re-  
move the hardware (12, 13 and 14) securing the  
pump casing to the base (3).  
If no further disassembly is required, see Seal  
Reassembly and Installation.  
Support the pump casing (1) using a suitable hoist  
and sling, and remove the hardware (17 and 18)  
securing the pump casing to the intermediate (15).  
Separate the parts by pulling the casing straight  
away from the intermediate. If shims have been  
used under the mounting feet to level the pump  
casing, tie and tag these shims for ease of reas-  
sembly.  
Seal Reassembly and Installation  
(Figures 2 and 3)  
Clean the seal cavity and shaft with a cloth soaked  
in fresh cleaning solvent.  
Remove the casing o-ring (21). Clean the mating  
surfaces of the intermediate and pump casing.  
Most cleaning solvents are toxic and  
flammable. Use them only in a well ven-  
tilated area free from excessive heat,  
sparks, and flame. Read and follow all  
precautions printed on solvent contain-  
ers.  
Impeller Removal  
(Figure 2)  
To loosen the impeller (2), tap the vanes of the im-  
peller in a counterclockwise direction (when facing  
the impeller) with a block of wood or a soft-faced  
mallet. Unscrew the impeller and replace it if  
cracked or badly worn. Use caution when remov-  
ing the impeller; tension on the seal spring will be  
released as the impeller is unscrewed.  
The seal is not normally reused because wear pat-  
terns on the finished faces cannot be realigned  
during reassembly. This could result in premature  
failure. If necessary to reuse an old seal in an emer-  
gency, carefully wash all metallic parts in fresh  
cleaning solvent and allow to dry thoroughly.  
Slide the impeller adjusting shims (4) off the impel-  
ler shaft. Tie and tag the shims or measure and re-  
cord their thickness for ease of reassembly.  
Handle the seal parts with extreme care to prevent  
damage. Be careful not to contaminate precision  
finished faces; even fingerprints on the faces can  
shorten seal life. If necessary, clean the faces with a  
non-oil based solvent and a clean, lint-free tissue.  
Wipe lightly in a concentric pattern to avoid  
scratching the faces.  
Seal Removal and Disassembly  
(Figures 2 and 3)  
Remove the spring centering washer (5) and seal  
spring. Slide the shaft sleeve (6) and rotating por-  
tion of the seal off the shaft as an assembly. Lubri-  
cate the sleeve adjacent to the seal and work oil up  
under the rubber bellows. Slide the rotating portion  
of the seal off the shaft sleeve.  
Inspect the seal components for wear, scoring,  
grooves, and other damage that might cause leak-  
age. Clean and polish the shaft sleeve, or replace it  
if there are nicks or cuts on either end. If any com-  
ponents are worn, replace the complete seal;  
never mix old and new seal parts.  
Remove the hardware (17 and 18) and carefully  
slide the intermediate (15) and stationary portion of  
the seal off the shaft as a unit. Use a suitably sized  
dowel to press the stationary element out of the in-  
termediate from the back side.  
If a replacement seal is being used, remove it from  
the container and inspect the precision finished  
faces to ensure that they are free of any foreign  
matter.  
MAINTENANCE & REPAIR  
PAGE E − 7  
 
OM−05463  
10 SERIES  
To ease installation of the seal, lubricate the O-  
rings, sleeve and bellows with water or a very small  
amount of oil, and apply a drop of light lubricating  
oil on the finished faces. Assemble the seal as fol-  
lows, (see Figure 3).  
SPRING  
RETAINER  
SPRING  
CENTERING  
WASHER  
O-RING  
STATIONARY  
SEAT  
IMPELLER  
SHIMS  
ENGINE STUB  
SHAFT  
SHAFT  
SLEEVE  
IMPELLER  
INTERMEDIATE  
BELLOWS  
ROTATING  
ELEMENT  
Figure 3. 25285−855 Seal Assembly  
Assemble the O-ring into the stationary seat. Press  
the stationary seat into the intermediate bore until  
fully seated. A push tube cut from a length of plastic  
pipe would aid this installation. The I.D. of the tube  
should be approximately the same as the I.D. of the  
seal spring.  
This seal is not designed for operation at  
temperatures above 160_F (71_C). Do not  
use at higher operating temperatures.  
Subassemble the rotating element into the retainer  
and bellows. Apply a drop of light oil on the preci-  
sion finished faces; never use grease. Use even  
pressure to carefully press this subassembly onto  
the sleeve (6) until the rotating element is just flush  
with the chamfered end of the sleeve.  
Inspect the engine stub shaft for damage. Small  
scratches or nicks may be removed with a fine file  
or emery cloth. If the stub shaft is bent of excessive-  
ly worn, replace the shaft (see the engine service  
manual).  
Slide the sleeve and assembled rotating portion of  
the seal onto the shaft until the seal faces contact.  
Continue to push the sleeve through the seal until it  
seats squarely against the shaft shoulder.  
To ease installation of the intermediate O-ring (21),  
lubricate the O-ring with water or a very small  
amount of oil. Install the O-ring on the intermediate.  
Position the intermediate against the engine bell-  
housing and secure it with hardware (19 and 20).  
Install the seal spring and spring centering washer.  
PAGE E − 8  
MAINTENANCE & REPAIR  
 
10 SERIES  
OM−05463  
Lubricate the seal as indicated in LUBRICATION,  
Be sure the wear plate does not scrape against the  
impeller.  
after the impeller has been installed.  
Secure the back cover assembly to the pump cas-  
ing using the hardware (27 and 28). Do not over  
tighten the wing nuts; they should be just tight  
enough to ensure a good seal at the back cover  
shoulder.  
Impeller Installation And Adjustment  
(Figure 2)  
Inspect the impeller and replace it if cracked or  
badly worn. Install the same thickness of impeller  
shims (4) as previously removed. Apply anti-seize  
to the shaft threads and screw the impeller onto the  
shaft until tight.  
Suction Check Valve Installation  
(Figure 2)  
Inspect the check valve components and replace if  
required.  
A clearance of .008 to .015 inch (0,20 to 0,38 mm)  
between the impeller and the intermediate is nec-  
essary for maximum pump efficiency. Measure this  
clearance and add or remove impeller shims until  
this clearance is reached.  
Position the check valve assembly (37) in the suc-  
tion port with the check valve plate (40) facing to-  
ward the inside of the pump casing. Install the suc-  
tion flange (34) and secure with the nuts (36).  
Check the operation of the check valve to ensure  
proper seating and free movement.  
Pump Casing Installation  
(Figure 2)  
Final Pump Assembly  
(Figure 1)  
Secure the pump casing (1) to the intermediate  
with the hardware (17 and 18). Be careful not to  
damage the O-ring.  
Be sure the pump and engine are securely  
mounted to the base.  
See Figure 1 and secure the pump casing to the  
base (3) with the hardware (12, 13 and 14). Be sure  
to reinstall any leveling shims used under the  
mounting feet of the pump casing.  
Install the suction and discharge lines and open all  
valves. Make certain that all piping connections are  
tight, properly supported and secure.  
Be sure the engine has been properly lubricated,  
see LUBRICATION.  
Back Cover Installation  
(Figure 2)  
Remove the fill plug assembly (7). Fill the pump  
casing with clean liquid. Reinstall the fill plug and  
tighten it.  
Inspect the wear plate (22) and replace it if badly  
worn or grooved. Install the wear plate on the back  
cover using the hardware (24 and 25).  
Refer to OPERATION, Section C, before putting  
the pump back into service.  
Clean any scale or debris from the back cover  
shoulder and pump casing which might prevent a  
good seal.  
LUBRICATION  
Seal Assembly  
(Figure 2)  
NOTE  
Apply a film of ‘Never-Seez’ or equivalent com-  
pound on the back cover shoulder or any surface  
which contacts the pump casing to ease future dis-  
assembly and to reduce rust and scale build up.  
The seal assembly is lubricated by the medium be-  
ing pumped. No additional lubrication is required.  
Engine  
Replace the back cover gasket (33) and slide the  
back cover assembly (29) into the pump casing.  
Consult the literature supplied with the engine, or  
contact your local Honda engine representative.  
MAINTENANCE & REPAIR  
PAGE E − 9  
 
AV−05791 (02-07-06)  
THE GORMAN-RUPP COMPANY AND  
GORMAN-RUPP OF CANADA LIMITED  
12 MONTH LIMITED WARRANTY  
EXTENT AND DURATION OF WARRANTY  
Coverage: The Gorman-Rupp Company or Gorman-Rupp of Canada Limited (herein individually referred to as ꢀGR")  
each individually warrant that its products and parts shall be free from defects in material and workmanship for twelve (12)  
months from the date of purchase by the original end user.  
Exceptions: This Limited Warranty shall not apply to the following products and parts: engines, motors, trade accesso-  
ries and other products, components or materials not manufactured by GR. With respect to submersible pumps, the  
pump and motor are an integral unit and are therefore warranted as a unit. However, with respect to the electrical  
components in submersible pumps, this warranty is valid only when electrical controls for the pump have been specified  
and/or provided by GR. Wear and tear on any product resulting from normal use is not covered by this Limited Warranty.  
LIMITATIONS  
GR’S SOLE AND EXCLUSIVE WARRANTY WITH RESPECT TO ITS PRODUCTS AND  
PARTS IS THIS LIMITED WARRANTY. THIS LIMITED WARRANTY IS IN LIEU OF  
ALL OTHER EXPRESS AND/OR IMPLIED WARRANTIES, INCLUDING IMPLIED  
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR  
PURPOSE.  
EXCLUSIVE REMEDY AND DAMAGES  
The sole and exclusive remedy for breach of this Limited Warranty by GR, and the entire extent of its liability for such  
breach or for damages arising and/or resulting from the use of the products and parts covered by this Limited Warranty  
shall be as follows:  
1. Repair or replacement: If inspection shows that any GR product or part covered under this LimitedWarranty is defec-  
tive in materials or workmanship, GR shall repair or replace the defective product or part at its option, without charge.  
You must have properly installed, maintained and used the product or part claimed to be defective in accordance with  
the maintenance schedule and/or manual which comes with the product. No allowance will be made for labor, trans-  
portation or other charges incurred by you in connection with such repair or replacement.  
2. To obtain the above remedy:  
a) Immediately notify GR at the address below of the claimed defect in materials or workmanship and provide the  
serial number or date code of the product and/or part and provide a copy of the invoice or bill of sale referencing  
the product and/or part by no later than the expiration date of the Limited Warranty period.  
b) GR will advise whether inspection of the product and/or part will be necessary and whether and how repair or  
replacement will be effected. If inspection by GR is necessary, the product or part must be sent freight prepaid to  
GR at the address stated below. Return shipment of the repaired product or part will be F.O.B. the address stated  
below.  
3. Damages: GR’s liability for damages for breach of this Limited Warranty shall not exceed the amount of the purchase  
price of the product or part in respect to which damages are claimed. IN NO EVENT SHALL GR BE  
LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES FOR  
BREACH OF THIS LIMITED WARRANTY OTHER THAN AS STATED HEREIN.  
Some states do not allow the exclusion or limitation of incidental or consequential damages. Accordingly, the above  
may not apply to you. This Limited Warranty gives you specific legal rights, and you may also have other rights which  
vary from state to state and province to province.  
THE GORMAN-RUPP COMPANY  
P.O. BOX 1217  
GORMAN-RUPP OF CANADA LIMITED  
70 Burwell Road  
MANSFIELD, OH 44901−1217  
Phone: (419) 755−1011  
St. Thomas, Ontario N5P 3R7  
Phone: (519) 631−2870  
 

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