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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