ACDEU
OM−05966−01
June 27, 2006
Rev. A 05-06-08
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
10 SERIES PUMP
MODEL
13E2−12LD477 S/G
THE GORMAN-RUPP COMPANY MANSFIELD, OHIO
www.grpumps.com
GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
2006 The Gorman-Rupp Company
Register your new
Gorman-Rupp pump online at
www.grpumps.com/register.
Valid serial number and e-mail address required.
The engine exhaust from this
product contains chemicals
known to the State of California to
cause cancer, birth defects or
other reproductive harm.
RECORD YOUR PUMP MODEL AND SERIAL NUMBER
Please record your pump model and serial number in the
spaces provided below. Your Gorman-Rupp distributor
needs this information when you require parts or service.
Pump Model:
Serial Number:
TABLE OF CONTENTS
INTRODUCTION PAGE I − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY - SECTION A PAGE A − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION − SECTION B PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Dimensions PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREINSTALLATION INSPECTION PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery Specifications And Installation PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POSITIONING PUMP PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lifting PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearance PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION AND DISCHARGE PIPING PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Materials PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Configuration PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connections to Pump PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gauges PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION LINES PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fittings PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strainers PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sealing PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Lines In Sumps PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Line Positioning PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISCHARGE LINES PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siphoning PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valves PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bypass Lines PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION − SECTION C PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRIMING PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lines With a Bypass PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lines Without a Bypass PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leakage PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liquid Temperature And Overheating PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strainer Check PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Vacuum Check PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOPPING PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cold Weather Preservation PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING − SECTION D PAGE D − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP MAINTENANCE AND REPAIR - SECTION E PAGE E − 1. . . . . . . . . . . . . . . . .
STANDARD PERFORMANCE CURVE PAGE E − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i
TABLE OF CONTENTS
(continued)
PARTS LISTS:
Pump Model PAGE E − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Model PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump End Assembly PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Assembly PAGE E − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . .
Suction Check Valve Removal and Disassembly PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . .
Back Cover Removal PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Casing Removal PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Removal PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Removal and Disassembly PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Reassembly and Installation PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Installation And Adjustment PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Casing Installation PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back Cover Installation PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Check Valve Installation PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Final Pump Assembly PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Assembly PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
10 SERIES
OM−05966
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 pump is a 10 Series, semi-open impeller, selfpriming centrifugal model with a suction check
valve. It is close-coupled to a two cylinder, four
cycle, air cooled diesel engine. The pump is designed for handling dirty water containing specified entrained solids. The basic material of construction for wetted parts is cast iron, with cast iron
impeller and steel wearing parts.
This manual will alert personnel to known procedures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance personnel to ensure that only safe, established main-
tenance procedures are used, and that any procedures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such practices.
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 required and the injury which will result
from failure to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.
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-Rupp Company
P.O. Box 1217
Mansfield, Ohio 44901−1217
Phone: (419) 755−1011
or:
Gorman-Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: (519) 631−2870
Hazards or unsafe practices which COULD
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possible damage which could result from failure
to follow the procedure.
NOTE
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.
PAGE I − 1INTRODUCTION
10 SERIES OM−05966
SAFETY − SECTION A
This information applies to 10 Series engine driven pumps. Refer to the manual
accompanying the engine before attempting to begin operation.
Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and precautions for each specific application.
Therefore, it is the owner/installer’s responsibility to ensure that applications
not addressed in this manual are performed only after establishing that neither operator safety nor pump integrity
are compromised by the installation.
Before attempting to open or service the
pump:
1. Familiarize yourself with this manual.
2. Switch off the engine ignition and
remove the key to ensure that the
pump will remain inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
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 personnel as a result of pump failure.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or damage 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.
After the pump has been positioned,
make certain that the pump and all piping connections are tight, properly supported and secure before operation.
Do not operate the pump against a
closed discharge valve for long periods
of time. If operated against a closed discharge valve, pump components will
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an overheated pump. Vapor pressure within the
pump can cause parts being disengaged to be ejected with great force. Allow the pump to cool before servicing.
PAGE A − 1SAFETY
OM−05966
Do not operate an internal combustion
engine in an explosive atmosphere.
When operating internal combustion
engines in an enclosed area, make certain that exhaust fumes are piped to the
outside. These fumes contain carbon
monoxide, a deadly gas that is colorless, tasteless, and odorless.
Fuel used by internal combustion en-
10 SERIES
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 running engine. Avoid overfilling the fuel
tank. Always use the correct type of fuel.
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 2700
RPM.
PAGE A − 2 SAFETY
10 SERIES OM−05966
INSTALLATION − SECTION B
Review all SAFETY information in Section A.
Since pump installations are seldom identical, this
section offers only general recommendations and
practices required to inspect, position, and arrange 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.
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
specific application. Since the pressure supplied
OUTLINE DRAWING
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 Section E, Page 1). If the pump is fitted with a GormanRupp double grease lubricated seal, the maximum
incoming pressure must be reduced to 10 p.s.i.
For further assistance, contact your Gorman-Rupp
distributor or the Gorman-Rupp Company.
Pump Dimensions
See Figure 1 for the approximate physical dimensions of this pump.
Figure 1. Pump Model 13E2-12LD477 S/G
PAGE B − 1INSTALLATION
OM−05966 10 SERIES
PREINSTALLATION INSPECTION
The pump assembly was inspected and tested before shipment from the factory. Before installation,
inspect the pump for damage which may have occurred during shipment. Check as follows:
a. Inspect the pump and engine for cracks,
dents, damaged threads, and other obvious
damage.
b. Check for and tighten loose attaching hard-
ware. Since gaskets tend to shrink after drying, check for loose hardware at mating surfaces.
c. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
indicated.
Reserve
Capacity
@ 80 F
(Minutes)
112
Amp/
Hr.
Rating
97
Approx.
Overall
Dims.
(Inches)
10.25L
x
6.81W
x
8.88H
Voltage
12 Volts
Cold
Crank
Amps
@ 0 F
550−565
Table 1. Battery Specifications
Refer to the information accompanying the battery
and/or electrolyte solution for activation and charging instructions.
Before installing the battery, clean the positive and
negative cable connectors, and the battery terminals. Secure the battery by tightening the
holddown brackets. The terminals and clamps
may be coated with petroleum jelly to retard corrosion. Connect and tighten the positive cable first,
then the negative cable.
POSITIONING PUMP
d. Check levels and lubricate as necessary. Re-
fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and perform duties as instructed.
e. If the pump and engine have been stored for
more than 12 months, some of the components or lubricants may have exceeded their
maximum shelf life. These must be inspected
or replaced to ensure maximum pump service.
If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman-Rupp distributor or the factory to determine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
Battery Specifications And Installation
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or damage 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.
Lifting
Pump unit weights will vary depending on the
mounting and drive provided. Check the shipping
tag on the unit packaging for the actual weight, and
use lifting equipment with appropriate capacity.
Drain the pump and remove all customer-installed
equipment such as suction and discharge hoses
or piping before attempting to lift existing, installed
units.
Unless otherwise specified on the pump order, the
engine battery was not included with the unit. Refer to the following specifications when selecting a
battery.
The pump assembly can be seriously
PAGE B − 2 INSTALLATION
10 SERIES OM−05966
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Mounting
Locate the pump in an accessible place as close as
practical to the liquid being pumped. Level mounting is essential for proper operation.
The pump may have to be supported or shimmed
to provide for level operation or to eliminate vibration.
If the pump has been mounted on a moveable
base, make certain the base is stationary by setting
the brake and blocking the wheels before attempting to operate the pump.
To ensure sufficient lubrication and fuel supply to
the engine, do not position the pump and engine
more than 15 off horizontal for continuous operation. 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.
Clearance
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, reinforced type to prevent collapse under suction. Using piping couplings in suction lines is not recommended.
Line Configuration
Keep suction and discharge lines as straight as
possible to minimize friction losses. Make minimum use of elbows and fittings, which substantially increase friction loss. If elbows are necessary,
use the long-radius type to minimize friction loss.
Connections to Pump
Before tightening a connecting flange, align it exactly with the pump port. Never pull a pipe line into
place by tightening the flange bolts and/or couplings.
Lines near the pump must be independently supported 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.
When positioning the pump, allow a minimum
clearance of 18 inches (457,2 mm) in front of the
back cover to permit removal of the cover and easy
access to the pump interior.
SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by increased suction lift, discharge elevation, and friction losses. See the performance curve and notes
on Page E-1 to be sure your overall application allows pump to operate within the safe operation
range.
Gauges
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 (457,2 mm) from the
suction and discharge ports and install the lines.
Installation closer to the pump may result in erratic
readings.
SUCTION LINES
To avoid air pockets which could affect pump priming, the suction line must be as short and direct as
possible. When operation involves a suction lift, the
PAGE B − 3INSTALLATION
OM−05966 10 SERIES
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.
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 installed with the flat part of the reducers uppermost
to avoid creating air pockets. Valves are not normally used in suction lines, but if a valve is used,
install it with the stem horizontal to avoid air pockets.
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.
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.
This pump is designed to handle up to 2 inch (50,8
mm) diameter spherical solids.
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 diameter of the suction line.
If there is a liquid flow from an open pipe into the
sump, the flow should be kept away from the suction inlet because the inflow will carry air down into
the sump, and air entering the suction line will reduce pump efficiency.
If it is necessary to position inflow close to the suction 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.
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 distance equal to at least 3 times the diameter of the
suction pipe.
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation.
recommended minimum submergence vs. veloc-
ity.
Figure 2 shows
Sealing
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 airtight seal. Follow the sealant manufacturer’s recommendations when selecting and applying the
pipe dope. The pipe dope should be compatible
with the liquid being pumped.
PAGE B − 4 INSTALLATION
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).
NOTE
10 SERIES OM−05966
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity
DISCHARGE LINES
Siphoning
Do not terminate the discharge line at a level lower
than that of the liquid being pumped unless a siphon breaker is used in the line. Otherwise, a siphoning action causing damage to the pump
could result.
Valves
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.
A check valve in the discharge line is normally recommended, but it is not necessary in low discharge head applications.
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 rotation when it is stopped.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
Bypass Lines
If a system check valve is used due to high discharge 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 prevent clogging, but not so large as to affect pump
discharge capacity.
PAGE B − 5INSTALLATION
10 SERIES
OM−05966
OPERATION − SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
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 personnel as a result of pump failure.
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 3000
RPM.
PRIMING
not prime when dry. Extended operation of
a dry pump will destroy the seal assembly.
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 considerable length of time.
3. The liquid in the pump casing has evaporated.
Once the pump casing has been filled, the pump
will prime and reprime as necessary.
After filling the pump casing, reinstall
and tighten the fill plug. Do not attempt
to operate the pump unless all connecting piping is securely installed. Otherwise, liquid in the pump forced out under pressure could cause injury to personnel.
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.
Install the pump and piping as described in IN-
STALLATION. Make sure that the piping connections are tight, and that the pump is securely
mounted. Check that the pump is properly lubricated (see LUBRICATION in MAINTENANCE
AND REPAIR).
This pump is self-priming, but the pump should
never be operated unless there is liquid in the
pump casing.
STARTING
Consult the operations manual furnished with the
engine.
OPERATION
Pump speed and operating condition
points must be within the continuous perNever operate this pump unless there is
liquid in the pump casing. The pump will
OPERATION PAGE C − 1
formance range shown on the curve (see
Section E, Page 1).
OM−05966 10 SERIES
Lines With a Bypass
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
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.
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.
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 pressure 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.
Leakage
pump and allow it to cool before servicing it. Refill
the pump casing
with cool liquid.
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.
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.
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). If the pump is fitted with a Gorman-Rupp
double grease lubricated seal, the maximum in-
coming pressure must be reduced to 10 p.s.i.
No leakage should be visible at pump mating surfaces, or at pump connections or fittings. Keep all
line connections and fittings tight to maintain maximum pump efficiency.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
110 F (43C). 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 rupture or explode. If overheating occurs, stop the
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.
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.
OPERATIONPAGE C − 2
10 SERIES
OM−05966
Before checking for the source of the leak, check
the point of installation of the vacuum gauge.
STOPPING
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
On engine driven pumps, reduce the throttle
speed slowly and allow the engine to idle briefly before 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.
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.
OPERATION PAGE C − 3
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. Switch off the engine ignition and remove the key, or take other precautions to ensure that the pump will remain inoperative.
3. Allow the pump to completely cool if
overheated.
4. Check the temperature before opening any covers, plates, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
OM−0596610 SERIES
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
Not enough liquid in casing.
Suction check valve contaminated or
damaged.
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
Suction lift or discharge head too high. Check piping installation and install
Strainer clogged. Check strainer and clean if neces-
Add liquid to casing. See
PRIMING.
Clean or replace check valve.
leaking or worn seal or gasket.
bypass line if needed. See INSTAL-
LATION.
sary.
TROUBLESHOOTING PAGE D − 1
OM−05966 10 SERIES
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
PUMP REQUIRES
TOO MUCH
POWER
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.
Impeller or other wearing parts worn
or damaged.
Strainer clogged. Check strainer and clean if neces-
Suction lift or discharge head too high. Check piping installation and install
Pump speed too high. Check driver output; check that
Check installation and correct
submergence as needed.
Replace worn or damaged parts.
Check that impeller is properly
centered and rotates freely.
sary.
Free impeller of debris.Impeller clogged.
bypass line if needed. See INSTAL-
LATION.
sheaves or couplings are correctly
sized.
Discharge head too low.
PUMP CLOGS
FREQUENTLY
EXCESSIVE NOISE Cavitation in pump. Reduce suction lift and/or friction
Discharge flow too slow.
Suction check valve or foot valve
clogged or binding.
Discharge line clogged or restricted;
hose kinked.
Pumping entrained
air.
Pump or drive not securely mounted.
Impeller clogged or damaged. Clean out debris; replace damaged
Adjust discharge
valve.
Dilute if possible.Liquid solution too thick.
Open discharge valve fully to increase flow rate, and run engine at
maximum governed speed.
Clean valve.
Check discharge lines; straighten
hose.
losses in suction line. Record vacuum and pressure gauge readings
and consult local representative or
factory.
Locate and eliminate source of air
bubble.
Secure mounting hardware.
parts.
TROUBLESHOOTINGPAGE D − 2
OM−0596610 SERIES
PREVENTIVE MAINTENANCE
Routine preventive maintenance of the pump will
maintain peak operating performance. 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 preventive
maintenance schedule will help assure troublefree performance and long life from your GormanRupp pump.
Record keeping is an essential component of a
good preventive maintenance program. Changes
in suction and discharge gauge readings (if so
equipped) between regularly scheduled inspections can indicate problems that can be corrected
before system damage or catastrophic failure occurs. 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 Schedule
Service Interval*
Item
General Condition (Temperature, Unusual
Noises or Vibrations, Cracks, Leaks,
Loose Hardware, Etc.) I
Pump Performance (Gauges, Speed, Flow) I
Bearing Lubrication I R
Seal Lubrication (And Packing Adjustment,
If So Equipped) I R
V-Belts (If So Equipped) I
Air Release Valve Plunger Rod (If So Equipped) I C
Front Impeller Clearance (Wear Plate) I
Rear Impeller Clearance (Seal Plate) I
Check Valve I
Pressure Relief Valve (If So Equipped) C
Pump and Driver Alignment I
Shaft Deflection I
Bearings I
Bearing Housing I
Piping I
Driver Lubrication − See Mfgr’s Literature
Daily Weekly Monthly Semi-
Annually
Annually
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−05966
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 MODEL 13E2−12LD477 S/G
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 different due to such factors as viscosity, specific
gravity, elevation, temperature, and impeller trim.
Never tamper with the governor to gain
more power. The governor establishes
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 performance or part numbers.
MAINTENANCE & REPAIR PAGE E − 1
safe operating limits that should not be
exceeded. The maximum continuous
operating speed for this pump is 2700
RPM.
PARTS PAGE
10 SERIESOM−05966
SECTION DRAWING
Figure 1. Pump Model 13E2−12LD477 S/G
MAINTENANCE & REPAIRPAGE E − 2
10 SERIES OM−05966
PARTS LIST
Pump Model 13E2−12LD477 S/G
(From S/N 1345995 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.
1 PUMP END ASSEMBLY 13E2−(12LD477 S/G) −−− 1
2 LOMBARDINI ENGINE 29226−101 −−− 1
3 COMBINATION BASE 41566−115 24150 1
4 FUEL TANK ASSEMBLY 7467A −−− 1
5 STREET ELBOW RS48 11999 1
6 LIFT BAIL ASSEMBLY 44711−025 24150 1
7 FUEL LINE 11308H −−− 1
8 POS BATTERY CABLE 47311−404 −−− 1
9 BATTERY SEE OPTIONS −−− REF
10 BATTERY BOX ASSEMBLY GRP40−02A −−− 1
11 HEX HD CAPSCREW B0606 15991 4
12 FUEL TANK STRAP 6353 15990 2
PART NAME
PART
NUMBER
MAT’L
CODE
QTY
MAINTENANCE & REPAIR PAGE E − 3
SECTION DRAWING
10 SERIESOM−05966
Figure 2. Pump Model 13E2−12LD477 S/G
MAINTENANCE & REPAIRPAGE E − 4
10 SERIES OM−05966
PARTS LIST
Pump Model 13E2−12LD477 S/G
(From S/N 1345995 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.
11 HEX NUT D08 15991 2
12 LOCK WASHER J08 15991 2
13 HEX HD CAPSCREW B0806 15991 2
14 FLAT WASHER K08 15991 2
15 FLANGED HEX NUT 21765−314 −−− 4
16 PIPE PLUG P04 15079 1
17 HOSE CLAMP 26518−641 −−− 2
18 HOSE BARB FITTING 26523−386 −−− 1
19 STREET ELBOW RS04 11999 1
20 HEX HD CAPSCREW B0605 15991 4
21 HEX NUT D06 15991 4
22 LOCK WASHER J06 15991 4
23 FUEL LINE 11308D −−− 1
24 STREET ELBOW RS02 11990 1
25 HOSE BARB FITTING 26523−382 −−− 1
26 LEVER CONTROL ASSEMBLY 44232−034 −−− 1
27 MACHINE SCREW X#06−02 15991 2
28 T-TYPE LOCK WASHER AK#06 15991 2
29 HEX NUT D#06 15991 2
30 THROTTLE MTG BRACKET 36371−014 15000 1
31 MACHINE SCREW X#08−01−1/2 17000 1
32 THROTTLE CABLE SLEEVE 31513−052 15000 1
NOT SHOWN:
PART NAME
WARNING DECAL 2613FE −−− 1
FELT STRIP 9490D 18030 2
START-UP TAG 38816−269 −−− 1
PART
NUMBER
MAT’L
CODE
QTY
OPTIONAL:
12V BATTERY 29331−513 −−− 1
WHEEL KIT GRP30−260 −−− 1
MAINTENANCE & REPAIR PAGE E − 5
SECTION DRAWING
10 SERIESOM−05966
Figure 3. Pump End Assembly 13E2−(12LD477 S/G)
MAINTENANCE & REPAIRPAGE E − 6
10 SERIES OM−05966
PARTS LIST
Pump End Assembly 13E2−(12LD477 S/G)
ITEM
PART NAME PART
NO.
NUMBER
MAT’L
CODE
QTY ITEM
NO.
PART NAME PART
NUMBER
MAT’L
CODE
QTY
1 PUMP CASING 38224−505 10010 1
2 IMPELLER 38615−011 10010 1
GREASE SEAL ASSY GS1000C −−− 1
3
−IMP ADJ SHIM SET 2X 17090 1
4 HEX NUT D08 15991 4
5 SUCTION FLANGE 38645−201 10010 1
6 FLAP VALVE ASSY 46413−029 −−− 1
−HEX HD CAPSCREW B0403−1/2 17000 2
−LOCK WASHER J04 17000 2
−LARGE VALVE WEIGHT 4718 10010 1
−FLAP VALVE GASKET 38671−626 19070 1
−SMALL VALVE WEIGHT 19 10010 1
7 STUD C0808 15991 6
8 FILL PLUG ASSY 48271−065 −−− 1
9 STUD C1008 15991 4
10 DISCH FLANGE GASKET 38687−009 20000 1
11 DISCHARGE FLANGE 38644−202 10010 1
12 HEX NUT D10 15991 4
13 GREASE CUP S1509 −−− 1
14 MTG BRACKET ASSY 41881−340 24150 1
15 MALE ELBOW 26171−038 −−− 1
16 TUBING 31411−241 19550 1
17 MALE CONNECTOR 26171−013 −−− 1
18 HEX NUT D06 15991 8
19 DRIVE ASSEMBLY 44162−177 −−− 1
INDICATES PARTS RECOMMENDED FOR STOCK
20 INTERMEDIATE ASSY 5B 10010 1
−SEAL LINER 83 14080 1
21 LOCK WASHER J07 15991 4
22 HEX HD CAPSCREW B0708 15991 4
23 CASING GASKET SET 48211−022 −−− 1
24 STUD C0606 15991 8
25 NAME PLATE 38818−021 13990 1
26 DRIVE SCREW BM#04−03 −−− 4
27 WEAR PLATE ASSY 46451−302 24150 1
28 PIPE PLUG P08 15079 1
29 LOCK WASHER J04 15991 2
30 HEX NUT D04 15991 2
31 BACK COVER GASKET 38682−015 20000 1
32 FLAT WASHER K08 15991 2
33 WING NUT BB08 15991 2
35 BACK COVER ASSY 42111−997 −−− 1
−WARNING PLATE 2613EV 13990 1
−DRIVE SCREW BM#04−03 17000 4
NOT SHOWN:
STRAINER 4917 24001 1
G-R DECAL GR−03 −−− 1
SUCTION STICKER 6588AG −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−−−− 1
PRIMING STICKER 6588AH −−− 1
GR CUP INSTRUCTION 6588BD −−− 1
MAINTENANCE & REPAIR PAGE E − 7
SECTION DRAWING
10 SERIESOM−05966
Figure 4. 44162−177 Drive Assembly
PARTS LIST
ITEM
NO.
1 BELLHOUSING ADAPTOR 31741−008 15990 1
2 LOCKWASHER 21171−511 −−− 8
3 HEX HD CAPSCREW 22645−166 −−− 8
4 LOCKWASHER 21171−510 −−− 6
5 HEX HD CAPSCREW 22645−135 −−− 6
6 STUB SHAFT ASSY 44111−005 24150 1
PART NAME
PART
NUMBER
MAT’L
CODE
MAINTENANCE & REPAIRPAGE E − 8
QTY
OM−0596610 SERIES
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and decals attached to the pump.
This pump requires little service due to its rugged,
minimum-maintenance design. However, if it becomes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the sectional views (see Figures 1, 2, 3 and 4) and
the accompanying parts lists.
This manual will alert personnel to known procedures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance personnel to ensure that only safe, established main-
tenance procedures are used, and that any procedures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such practices.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or damage 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 Check Valve Removal and Disassembly
(Figure 3)
Before attempting to service the pump, remove the
pump casing drain plug (28) and drain the pump.
Clean and reinstall the drain plug.
Before attempting to service the pump, shut down
the engine and remove the key to ensure that it will
remain inoperative. Close all valves in the suction
and discharge lines.
For engine disassembly and repair, consult the literature supplied with the engine, or contact your
local engine representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this manual.
2. Switch off the engine ignition and
remove the key to ensure that the
pump will remain inoperative.
3. Allow the pump to completely cool
if overheated.
To service the suction check valve, remove the suction piping. Remove the nuts (4) securing the suction flange (5) to the pump casing (1). Pull the
check valve assembly (6) from the suction port.
Remove the hardware securing the check valve
weights to the check valve.
If no further disassembly is required, see Suction
Check Valve Installation.
Back Cover Removal
(Figure 3)
The wear plate assembly (27) can be serviced after
the back cover assembly (34) has been removed.
Remove the wing nuts and flat washers (32 and 33)
securing the back cover to the casing. Pull the
back cover and assembled wear plate from the
pump casing. Inspect the wear plate and, if replacement is required, remove the hardware (29
and 30) securing it to the back cover.
MAINTENANCE & REPAIR PAGE E − 9
10 SERIESOM−05966
Remove the cover plate gasket (31) and clean the
mating surfaces.
Pump Casing Removal
(Figure 3)
To service the impeller or seal assembly, disconnect the discharge piping. See Figure 1 and remove the hardware (13, 14, 15 and 16) securing
the pump casing to the base (3).
Support the pump casing using a suitable hoist
and sling, and remove the nuts (18) securing the
pump casing and grease cup bracket (14) to the intermediate (20). 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 reassembly.
Seal Removal and Disassembly
(Figures 3 and 5)
To remove the seal assembly (3), remove the
grease cup (13), mounting bracket (14) and piping
(15, 16 and 17) from the intermediate (20).
Carefully remove the outer stationary and rotating
seal elements, packing ring, stationary washer,
seal spring, and spacer sleeve from the intermediate. Using a pair of stiff wires with hooked ends, remove the inboard stationary washer, packing ring
and stationary and rotating seal elements.
NOTE
The seal assembly may also be removed by disengaging the hardware (21 and 22) securing the intermediate (20) to the engine and sliding the intermediate and seal assembly off the shaft as a single
unit. Use a suitably sized dowel to press the remaining seal components from the intermediate.
Remove the casing gasket set (23). Record the
thickness of the gaskets for future reference. Clean
the mating surfaces of the intermediate and pump
casing.
Impeller Removal
(Figure 3)
Before removing the impeller, turn the cross arm on
the automatic grease cup (13) clockwise until it rest
against the cover (see Figure 6). This will prevent
the grease from escaping when the impeller is removed.
To loosen the impeller (2), tap the vanes of the impeller 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 removing the impeller; tension on the seal spring will be
released as the impeller is unscrewed.
Slide the impeller adjusting shims off the stub
shaft. Tie and tag the shims or measure and record
their thickness for ease of reassembly.
Inspect the seal liner (not shown) in the I.D. of the
intermediate for wear or grooves which could
cause leakage or damage to the seal packing
rings. The seal liner is a press fit in the intermediate
and does not normally require replacement. If replacement is necessary, disengage the hardware
(21 and 22) and separate the intermediate from the
engine. For seal liner replacement, see Seal Reas-
sembly and Installation.
If no further disassembly is required, see Seal
Reassembly and Installation.
Seal Reassembly and Installation
(Figures 3 and 5)
Before installing the seal, inspect the bore of the
seal liner (not shown) in the I.D. of the intermediate
(20) for wear or grooves which might cause leakage or damage to the seal packing rings. If the seal
liner requires replacement, remove the intermediate as described in Seal Removal And Disassem-
bly, and position it on the bed of an arbor (or hydraulic) press. Use a new sleeve to force the old
one out. After the new liner is properly installed, a
1/4-inch (6,4 mm) diameter hole must be drilled
through it to permit the flow of lubricant to the seal
MAINTENANCE & REPAIRPAGE E − 10
OM−0596610 SERIES
assembly. Be careful to center the drill in the
threaded grease piping hole and not damage the
threads. Deburr the hole from the inside of the seal
liner after drilling.
See Figure 4, and inspect the engine stub shaft assembly (6) for damage. Small scratches or nicks
may be removed with a fine file or emery cloth. If
excessive wear exists, remove the hardware (2 and
3) and separate the bellhousing adaptor (1) from
the engine bellhousing. Disengage the hardware
(4 and 5) and remove the stub shaft assembly. Reassemble the new stub shaft assembly and bellhousing adaptor, and proceed as follows with seal
installation.
Position the intermediate against the bellhousing
adaptor (1, Figure 4) and secure the intermediate
in place using the attaching hardware (21 and 22).
Be sure the threaded seal lubricant hole in the intermediate is at the 10 o’clock position when facing
the seal cavity in the intermediate.
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
low all precautions printed on solvent
containers.
The seal is not normally reused because wear patterns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emergency, carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
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.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leakage. Clean and polish the seal spacer sleeve, or replace it if there are nicks or cuts on either end. If any
components are worn, replace the complete seal;
never mix old and new seal parts.
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.
Most cleaning solvents are toxic and
flammable. Use them only in a well−
ventilated area free from excessive
heat, sparks, and flame. Read and fol-
To ease installation of the seal, lubricate the packing rings and seal liner 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 follows, (see Figure 5).
MAINTENANCE & REPAIR PAGE E − 11
10 SERIESOM−05966
IMPELLER
SHIMS
STUB
SHAFT
IMPELLER
PACKING RINGS
INTERMEDIATE
SEAL
LINER
SPACER
SLEEVE
STATIONARY
SEAL SEATS
ROTATING
ELEMENTS
STATIONARY
WASHER
Figure 5. GS1000C Seal Assembly
This seal is not designed for operation at
temperatures above 110F (43C). Do not
use at higher operating temperatures.
Position the inboard rotating element on the shaft
with the chamfered side toward the shaft shoul-
der and slide it on until fully seated.
Subassemble the inboard stationary seat, packing
ring and stationary washer. Press this unit into the
lubricated seal liner until the seal faces contact. 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 size as the I.D. of the seal
spring.
Install the spacer sleeve and seal spring.
STATIONARY
SPRING
Subassemble the outboard stationary seat, packing ring and stationary washer. Press this unit into
the lubricated seal liner. Install the outboard rotating element with the chamfered side toward the
impeller.
After the impeller and grease cup have been installed, lubricate the seal as indicated in LUBRI-
CATION at the end of this section.
Impeller Installation And Adjustment
(Figure 3)
Inspect the impeller, and replace it if cracked or
badly worn. Install the same thickness of impeller
shims as previously removed, and screw the impeller onto the shaft until tight.
A clearance of .020 to .040 inch (0,51 to 1,02 mm)
between the impeller and the intermediate is necessary for maximum pump efficiency. Measure this
clearance and add or remove impeller shims until
this clearance is reached.
WASHER
MAINTENANCE & REPAIRPAGE E − 12
OM−0596610 SERIES
Pump Casing Installation
(Figure 3)
Install the same thickness of pump casing gaskets
(23) as previously removed and secure the pump
casing (1) to the intermediate with the nuts (18). Do
not fully tighten the nuts at this time.
A clearance of .008 to .015 inch (0,20 to 0,38 mm)
between the impeller and the wear plate is also recommended for maximum pump efficiency. Install
the back cover and set this clearance by adding or
removing gaskets in the pump casing gasket set
until the impeller scrapes against the wear plate
when the shaft is turned. After the impeller scrapes,
add .015 inch (0,38 mm) of gaskets.
NOTE
An alternate method of adjusting this clearance is to
reach through the discharge port with a feeler
gauge and measure the gap. Add or subtract pump
casing gaskets accordingly.
NOTE
Apply a film of ‘Never-Seez’ or equivalent compound on the back cover shoulder or any surface
which contacts the pump casing to ease future disassembly and to reduce rust and scale build up.
Secure the back cover assembly to the pump casing using the wing nuts and washers (32 and 33).
Do not over-tighten the wing nuts; they should be
just tight enough to ensure a good seal at the back
cover shoulder.
Check for any scraping or binding and correct any
that exists before putting the pump back into service.
Suction Check Valve Installation
(Figure 3)
Inspect the check valve components and replace
as required. Subassemble the check valve weights
and check valve gasket with the previously removed hardware.
After the face clearance has been set, install the
grease cup mounting bracket (14), grease cup
(13) and piping (15, 16 and 17) and tighten the
hardware securing the pump casing to the intermediate.
See Figure 1 and secure the pump casing to the
base (3) with the hardware (13, 14, 15 and 16). Be
sure to reinstall any leveling shims used under the
mounting feet of the pump casing.
Back Cover Installation
(Figure 3)
Inspect the wear plate (27) and replace it if badly
worn or grooved. Install the wear plate on the back
cover using the hardware (29 and 30).
Clean any scale or debris from the back cover
shoulder and pump casing which might prevent a
good seal.
Position the check valve assembly (6) in the suction port with the large weight toward the inside of
the pump casing. Install the suction flange (5) and
secure with the nuts (4). Check the operation of the
check valve to ensure proper seating and free
movement.
Final Pump Assembly
(Figure 3)
Be sure the pump and engine are securely
mounted to the base.
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 pump and engine have been properly
lubricated, see LUBRICATION.
Remove the fill plug assembly (8). Fill the pump
casing with clean liquid. Reinstall the fill plug and
tighten it.
Replace the back cover gasket (31) and slide the
back cover assembly (34) into the pump casing.
MAINTENANCE & REPAIR PAGE E − 13
Refer to OPERATION, Section C, before putting
the pump back into service.
10 SERIESOM−05966
LUBRICATION
Seal Assembly
(Figure 3)
Fill the grease cup (13) through the grease fitting
with No. 2 lithium base grease until grease escapes from the relief hole. Turn the grease cup arm
counterclockwise until it is at the top of the stem;
POSITION
WHEN
EMPTY
GREASE
FITTING
this will release the spring to apply grease to the
seal (see Figure 6).
Before putting the pump into service, bleed off the
seal cavity and supply line to eliminate any air
pockets in the seal area.
Engine
Consult the literature supplied with the engine, or
contact your local engine representative.
POSITION
FOR
FILLING
CROSS
ARM
POSITION
WHEN
IN USE
RELIEF
HOLE
Figure 6. Automatic Lubricating Grease Cup
MAINTENANCE & REPAIRPAGE E − 14
For U.S. and International Warranty Information,
Please Visit www.grpumps.com/warranty
or call:
U.S.: 419−755−1280
International: +1−419−755−1352
For Canadian Warranty Information,
Please Visit www.grcanada.com/warranty
or call:
519−631−2870
THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA
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