GORMAN-RUPP PUMPS PA Series, PA14B60-B-6090H Installation, Operation And Maintenance Manual
Page 1
OM-06760-01
April 14, 2015
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
PA SERIES PUMP
MODEL
PA14B60-B-6090H
GORMAN‐RUPP PUMPS
www.grpumps.com
2015 Gorman‐Rupp Pumps Printed in U.S.A.
Page 2
Register your new
Gorman‐Rupp pump online at
www.grpumps.com
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:
Page 3
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 - 1............................................
Battery Installation PAGE B - 2.....................................................
POSITIONING PUMP PAGE B - 2.......................................................
Lifting PAGE B - 2.................................................................
Mounting PAGE B - 2.............................................................
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 - 3...............................................................
Strainers PAGE B - 3..............................................................
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................................................................
ALIGNMENT PAGE B - 5..............................................................
AUTO‐START PAGE B - 6.............................................................
Float Switch Installation PAGE B - 6.................................................
OPERATION - SECTION C PAGE C - 1......................................
OPERATION PAGE C - 1..............................................................
PRIMING PAGE C - 1.................................................................
STARTING PAGE C - 1................................................................
Manual Starting PAGE C - 1........................................................
Automatic Starting PAGE C - 2.....................................................
OPERATION PAGE C - 2..............................................................
Leakage PAGE C - 2..............................................................
Pump Vacuum Check PAGE C - 2..................................................
Liquid Temperature And Overheating PAGE C - 2.....................................
Strainer Check PAGE C - 2.........................................................
STOPPING PAGE C - 2................................................................
BEARING TEMPERATURE CHECK PAGE C - 3..........................................
Cold Weather Preservation PAGE C - 3..............................................
TROUBLESHOOTING - SECTION D PAGE D - 1..............................
PREVENTIVE MAINTENANCE PAGE D - 3...............................................
PUMP MAINTENANCE AND REPAIR ‐ SECTION E PAGE E - 1.................
STANDARD PERFORMANCE CURVE PAGE E - 1........................................
i
Page 4
TABLE OF CONTENTS
(continued)
PARTS LISTS:
Pump Model PAGE E - 3..........................................................
Pump Assembly PAGE E - 4.......................................................
Power Unit Kit PAGE E - 6.........................................................
Pump Assembly PAGE E - 8.......................................................
Priming Chamber Kit PAGE E - 9...................................................
Priming Chamber Assembly PAGE E - 10.............................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E - 11.........................
Priming Chamber Removal And Disassembly PAGE E - 11..............................
Discharge Check Valve Removal and Disassembly PAGE E - 12.........................
Suction Cover And Wear Ring Removal PAGE E - 12...................................
Pump Casing Removal PAGE E - 12.................................................
Impeller Removal PAGE E - 13......................................................
Seal Removal PAGE E - 13..........................................................
Separating Pump Assembly From Engine PAGE E - 13.................................
Pump Shaft and Bearing Removal and Disassembly PAGE E - 13........................
Bearing Cleaning And Inspection PAGE E - 14........................................
Pump Shaft and Bearing Reassembly and Installation PAGE E - 15......................
Securing Pump Assembly To Engine PAGE E - 16.....................................
Seal Reassembly and Installation PAGE E - 16........................................
Impeller Installation PAGE E - 17.....................................................
Pump Casing Installation PAGE E - 18................................................
Suction Cover And Wear Ring Installation PAGE E - 18.................................
Discharge Check Valve Assembly and Installation PAGE E - 19..........................
Priming Chamber Assembly And Installation PAGE E - 19...............................
LUBRICATION PAGE E - 19.............................................................
Seal Assembly PAGE E - 19.........................................................
Bearings PAGE E - 19..............................................................
Engine PAGE E - 19................................................................
ii
Page 5
PA SERIES
OM-06760
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.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in
structions and precautions for every aspect of
each specific application. Therefore, it is the re
sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com
promised by the installation. Pumps and related
equipment must be installed and operated ac
cording to all national, local and industry stan
dards.
If there are any questions regarding the pump or
its application which are not covered in this man
ual or in other literature accompanying this unit,
please contact your Gorman‐Rupp distributor, or
The Gorman‐Rupp Company:
HAZARD AND INSTRUCTION
DEFINITIONS
The following are used to alert maintenance per
sonnel to procedures which require special atten
tion, 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 severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.
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
For information or technical assistance on the
power source, contact the power source manufac
turer's local dealer or representative.
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.
NOTE
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.
PAGE I - 1INTRODUCTION
Page 6
PA SERIES
SAFETY ‐ SECTION A
This information applies to Prime Aire
Series pumps. Refer to the manual ac
companying the engine or power
source before attempting to begin oper
ation.
OM-06760
damage the pump or endanger person
nel 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.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Shut down the engine and discon
nect the positive battery cable to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature and make
sure the pump is cool before open
ing any covers, plates, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau
tiously.
7. Drain the pump.
This pump is designed to handle most
non‐volatile, non‐flammable liquids
containing specified entrained solids.
Do not attempt to pump volatile, corro
sive, or flammable liquids which may
Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
After the pump has been installed, make
certain that the pump and all piping or
hose connections are tight, properly
supported and secure before operation.
Do not operate the pump against a
closed discharge valve. If operated
against a closed discharge valve, pump
components will deteriorate, and the
liquid could come to a boil, build pres
sure, and cause the pump casing to rup
ture or explode. Momentary closure of a
discharge valve is acceptable only
when required for startup or shutdown
procedures.
Do not remove plates, covers, gauges,
PAGE A - 1SAFETY
Page 7
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 completely before
servicing.
This pump may be used to handle mate
rials which could cause illness through
direct exposure or emitted fumes. Wear
adequate protective clothing when
working on the pump or piping.
Do not operate the pump without guards
in place over the rotating parts. Ex
posed rotating parts can catch clothing,
fingers or tools, causing severe injury to
personnel.
PA SERIESOM-06760
Do not operate an internal combustion
engine in an explosive atmosphere.
When operating an internal combustion
engine in an enclosed area, make sure
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
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.
Make sure the pump is level. Lower jack
stands and chock the wheels, if so
equipped. Use caution when positioning
the skid‐mounted unit to prevent damage
to the fuel tank.
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. Refer to the Performance
Curve in Section, Page E‐1 for the maxi
mum continuous operating speed for
this pump.
PAGE A - 2 SAFETY
Page 8
PA SERIES OM-06760
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 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.
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
OUTLINE DRAWING
configuration, and priming must be tailored to the
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.
For further assistance, contact your Gorman‐Rupp
distributor or the Gorman‐Rupp Company.
Pump Dimensions
See Figure 1 for the approximate physical dimen
sions of this pump.
Figure 1. Pump Model PA14B60-B-6090H
PREINSTALLATION INSPECTION
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:
a. Inspect the pump for cracks, dents, damaged
threads, and other obvious damage.
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.
PAGE B - 1INSTALLATION
Page 9
OM-06760 PA SERIES
c. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
indicated. Note that the pump shaft rotates in
the required direction.
Only operate this pump in the direction in
dicated by the arrow on the pump body
and on the accompanying decal. Other
wise, the impeller could become loosened
from the shaft and seriously damage the
pump.
d. Check levels and lubricate as necessary. Re
fer to LUBRICATION in the Maintenance and
Repair Manual and perform duties as in
structed.
e. If the pump has been stored for more than 12
months, some of the components or lubri
cants may have exceeded their maximum
shelf life. These must be inspected or re
placed 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 deter
mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
Battery Installation
Unless otherwise specified on the pump order, the
engine battery is not included with engine driven
units. 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 termi
nals. Secure the battery by tightening the
holddown brackets. The terminals and clamps
may be coated with petroleum jelly to retard corro
sion. Connect and tighten the positive cable first,
then the negative cable.
POSITIONING PUMP
Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Suction and dis
charge hoses and piping must
be re
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
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.
Mounting
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 and eliminate vibration.
For engine driven units, the pump must be posi
tioned as level as possible to ensure sufficient lubri
cation and fuel supply to the engine.
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 attempt
ing to operate the pump.
If the pump has been mounted on a mov
PAGE B - 2 INSTALLATION
Page 10
PA SERIES OM-06760
able base, do not attempt to operate the
pump unless the unit is level. Be sure
the leveling stands are positioned on a
solid surface, and the wheels are
chocked.
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 oper
ating range shown on Page E‐1 to be sure your
overall application allows pump to operate within
the safe operation range.
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
forced type to prevent collapse under suction. Us
ing piping couplings in suction lines is not recom
mended.
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.
Gauges
The pump is drilled and tapped for installing dis
charge pressure and vacuum suction gauges. It is
recommended that gauges be installed to monitor
pump performance. Seal the gauge threads 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.
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.
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.
Strainers
Be certain to use the strainer furnished with the
pump; any spherical solids which pass through the
strainer 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.
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.
If a strainer not furnished with the pump 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 4 inch (101
mm) diameter spherical solids.
Sealing
Since even a slight leak will affect priming, head,
and capacity, especially when operating with a
PAGE B - 3INSTALLATION
Page 11
OM-06760 PA SERIES
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.
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.
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.
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.
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.
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation. Figure 2
shows recommended minimum submergence vs.
velocity.
Although not recommended, the vacuum assisted
priming feature allows the pump to be operated
temporarily in a “slurping” application with varying
water levels.
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).
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity
PAGE B - 4 INSTALLATION
Page 12
PA SERIES OM-06760
DISCHARGE LINES
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.
Valves
This pump is designed with a check valve in the
discharge line.
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.
With high discharge heads, it is recommended that
a throttling valve be installed in the discharge line
to protect the pump from excessive shock pres
sure and reverse rotation when it is stopped.
the engine to ensure that the pump will
remain inoperative.
The axis of the gearbox must be aligned to the axis
of the pump shaft in both the horizontal and vertical
planes. Most couplings require a specific gap or
clearance between the driving and the driven
shafts. Refer to the coupling manufacturer's serv
ice literature for information.
This pump is furnished with a flexible coupling. To
check alignment, use a feeler gauge or a taper
gauge between the coupling halves every 90
coupling is in alignment when the hubs are the
same distance apart at all points.
To check parallel adjustment, lay a straightedge
across both coupling halves at the top, bottom,
and side. The coupling is in horizontal parallel
alignment when the straightedge rests evenly on
both halves of the coupling. Use a feeler gauge be
tween the coupling and the straightedge to meas
ure the amount of misalignment.
Coupling and alignment adjustments may be
made by loosening the hold‐down bolts and shift
ing the driver and/or pump, or by shimming as re
quired.
. The
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
ALIGNMENT
The alignment of the pump and its engine is critical
for trouble‐free mechanical operation. The driver
and pump must be mounted so that their shafts are
aligned with and parallel to each other.
When mounted at the Gorman‐Rupp factory, driver
and pump are aligned before shipment. Misalign
ment can occur in transit and handling. Pumps
should be checked, and realigned if necessary, be
fore being put into operation. Before checking
alignment, tighten the hardware securing the
pump to the base.
When checking alignment, disconnect
Adjusting the alignment in one direction
may alter the alignment in another direc
tion. Check each procedure after altering
alignment.
Do not operate the pump without the
coupling guard in place over the rotat
ing parts. Exposed rotating parts can
catch clothing, fingers, or tools, causing
severe injury to personnel.
AUTO‐START
The standard pump is equipped with an auto‐start
control system which allows the pump to start and
stop as the liquid level in the wet well or sump rises
and falls.
PAGE B - 5INSTALLATION
Page 13
OM-06760 PA SERIES
Refer to the information which follows for installa
tion details for the liquid level sensing system pro
vided with your pump.
Float Switch Installation
The Float Switch autostart system employs either a
single or double float switch, where a bulb raises or
lowers (floats) with the liquid level, thus activating
an enclosed miniature switch. The floats are
equipped with a socket type connector that plugs
into a matching receptacle on the auto‐start control
box.
Standard floats are equipped with 50 feet (15,2 m)
of cable.
When installing the floats, note the following:
a. Be sure to provide sufficient room in the wet
well or sump so that floats do not get ob
structed or drawn into the suction line. If a flex
ible suction hose is used, it may be extended
to lay along the bottom of the wet well or sump
and the float can be attached to the hose
above the point where it bends along the bot
tom. Direct the suction line toward the flow,
and the float(s) away from the flow. If a stand
pipe is available, attach the float switch cable
to the standpipe in the sump at the approxi
mate desired liquid level.
b. In a single float system, the cable can be teth
ered to the suction line or standpipe approxi
mately 6 inches (152 mm) above the float.
This setting allows approximately 9 inches
(229 mm) of liquid rise between pump start/
stop. The start/stop interval may be increased
by extending the float end of the cable. The
liquid level in the sump will increase approxi
mately 8 inches (203 mm) between start/stop
intervals for every 6 inches (152 mm) of cable
increase.
c. If a double float switch system is used, posi
tion the “Start” float at the desired high water
level in the sump, and the “Stop” float at the
desired low water level in the pump.
d. Refer to Figure 3 for additional float switch
data.
ENGINE
CONTROL
BOX
CABLE
TETHER
POINT
1.25” Pipe
(Not Furnished)
ON
(Emptying)
OFF
(Filling)
OPERATING
RANGE
(See Table Below)
OFF
(Emptying)
ON
(Filling)
Figure 3. Float Switch Data
3.0
(0.9)
2.5
(.76)
2.0
(0.6)
1.5
(.46)
1.0
(0.3)
0.5
(.15)
1.0
(0.3)
APPROXIMATE FREE CORD LENGTH IN FT. (M)
2.0
(0.6)
3.0
(0.9)
4.0
(1.2)
PAGE B - 6 INSTALLATION
Page 14
PA SERIES
OM-06760
OPERATION - SECTION C
OPERATION
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
Do not operate an internal combustion
engine in an explosive atmosphere.
When operating an internal combustion
engine in an enclosed area, make sure
exhaust fumes are piped to the outside.
These fumes contain carbon monoxide,
a deadly gas that is colorless, tasteless
and odorless.
This pump is designed to handle most
non‐volatile, non‐flammable liquids
containing specified entrained solids
and corrosives. Do not attempt to pump
volatile, corrosive, or flammable liquids
which may damage the pump or endan
ger personnel as a result of pump fail
ure.
Make sure the pump is level. Lower the jack stands
and chock the wheels, if so equipped.
Make sure the pump is level. Lower jack
stands and chock the wheels, if so
equipped. Use caution when positioning
the skid‐mounted unit to prevent damage
to the fuel tank.
This pump is equipped with automatic
liquid level controls, and is subject to
automatic restart. Keep hands and
clothing away from the unit to prevent
injury during automatic operation. Dis
connect the positive battery cable be
fore performing any maintenance. Fail
ure to do so may result in serious per
sonal injury.
Consult the engine operations manual before at
tempting to start the unit.
Consult the manual accompanying the engine
control box and start the pump.
PRIMING
The pump will begin to prime upon startup. The air
in the suction line will be discharged from the educ
tor discharge line. Complete priming is indicated
by a positive discharge pressure reading.
Pump speed and operating condition
points must be within the continuous per
formance range shown on the perfor
mance curve on page E-1.
STARTING
Check the fuel level and oil levels in the engine, air
compressor, pump bearings and seal housing.
OPERATION PAGE C - 1
If full priming is not achieved, the discharge check
valve may be malfunctioning. If this occurs, shut
down the pump and consult Maintenance and
Repair, Section E for further details.
ROUTINE OPERATION
Adjust the engine speed to achieve the desired
output. Do not exceed the factory set engine speed
Page 15
OM-06760 PA SERIES
and system operating pressure. Do not operate
below the recommended operating speed (if appli
cable).
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. Refer to the Performance
Curve in Section E for the maximum
continuous operating speed for this
pump.
OPERATION IN EXTREME HEAT
The safety shutdown system will automatically
stop the unit if engine operating temperature ex
ceeds design limits. If engine over‐temperature
shutdown occurs, allow the unit to cool before re
starting.
If engine overheating continues, check the engine
lubricant level and viscosity. Consult the engine
operation manual for the recommended lubricant
for operation in extreme heat.
If the unit is being operated in the automatic mode,
adjust the liquid level device(s) to allow shorter run
and longer cooling periods, if possible.
Leakage
Once the pump is fully primed, 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 effi
ciency.
Pump Vacuum Check
Read the vacuum gauge with the pump primed
and at operation speed. Shut off the pump. The
vacuum gauge reading will immediately drop pro
portionate to static suction lift, and should then sta
bilize. 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 installa
tion of the vacuum gauge.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
F (71C). Do not apply it at a higher operating
160
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 immediately and allow it to completely cool
before servicing it. Approach any over‐heated
pump cautiously.
OPERATIONAL CHECKS
The engine powering this unit may be
equipped with an EPA‐compliant Exhaust
After‐Treatment (EAT) system, which is de
signed to reduce the amount of polutants
expelled into the atmosphere during oper
ation. Refer to the manual accompanying
the engine for a detailed explanation of the
engine EAT and follow all instructions in the
engine manual to ensure uninterrupted op
eration of the unit.
Allow an over‐heated pump to com
pletely cool before servicing. Do not re
move plates, covers, gauges, or fittings
from an overheated pump. Liquid within
the pump can reach boiling tempera
tures, and vapor pressure within the
pump can cause parts being disen
gaged to be ejected with great force. Af
ter the pump cools, drain the liquid from
the pump by removing the casing drain
plug. Use caution when removing the
plug to prevent injury to personnel from
hot liquid.
OPERATIONPAGE C - 2
Page 16
PA SERIES
OM-06760
Strainer Check
Check the strainer regularly, and clean it as neces
sary. The strainer should also be checked if pump
flow rate begins to drop. Monitor and record the
vacuum suction gauge 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.
STOPPING
Manual Stopping
Should any of the safety features cause the engine
to shut down, the cause must be determined and
corrected before putting the unit back into service.
All safety shutdown features are pre‐set at the fac
tory for optimum performance and safety; do not
attempt to adjust these settings.
Never disconnect any of the safety shut
down features; this will void the warran
ty and could result in serious damage to
the unit and/or injury to personnel. Safe
ty shutdown features are pre‐set at the
factory; do not attempt to adjust any of
the settings. Determine the cause of
shutdown before putting the unit back
into service. Consult the factory for ad
ditional information.
In the manual mode, reduce the throttle speed
slowly, and allow the engine to idle briefly before
shutting down the engine.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
Automatic Stopping
In the automatic mode, the pump will stop when
the liquid in the wet well or sump lowers and acti
vates the “Off” liquid level device(s). The pump will
restart automatically when the liquid rises and acti
vates the “On” liquid level device(s).
Safety Shutdown System
The unit is equipped with a safety system to auto
matically shut down the engine under certain con
ditions.
Displays on the control panel will indicate which of
the safety features has caused the engine to shut
down.
PERIODIC CHECKS
Seal Cavity and Bearing Lubrication
Both the seal and bearing cavities were fully lubri
cated at the factory. Check the lubrication levels
before startup, and regularly thereafter as indi
cated in Section E, Maintenance and Repair.
When lubrication is required, use only SAE No. 30
non‐detergent oil.
Bearing Temperature Check
Bearings normally run at higher than ambient tem
peratures because of heat generated by friction.
Temperatures up to 160F (71C) are considered
normal for bearings, and they can operate safely to
at least 180F (82C).
Checking bearing temperatures by hand is inaccu
rate. Bearing temperatures can be measured ac
curately by placing a contact‐type thermometer
against the housing. Record this temperature for
future reference.
A sudden increase in bearing temperatures is a
warning that the bearings are at the point of failing
to operate properly. Make certain that the bearing
lubricant is of the proper viscosity and at the cor
rect level (see LUBRICATION in Section E, Main
OPERATION PAGE C - 3
Page 17
OM-06760 PA SERIES
tenance and Repair). Bearing overheating can
also be caused by shaft misalignment and/or ex
cessive vibration.
When pumps are first started, the bearings may
seem to run at temperatures above normal. Con
tinued operation should bring the temperatures
down to normal levels.
Engine Fuel Filter
Consult the manual accompanying the engine,
and change the fuel filter periodically as indicated.
If operated under extremely dusty and/or humid
conditions, change the filter more frequently. Irreg
ular performance and loss of power usually indi
cate a dirty fuel filter.
Engine Oil
The engine was lubricated for test at the factory.
However, always check the lubrication level before
startup.
Consult the manual accompanying the engine,
and change the oil filter periodically as indicated. If
operated under extremely dusty conditions,
change the filter more frequently.
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.
OPERATIONPAGE C - 4
Page 18
PA SERIES
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 discon
nect the positive battery cable to en
sure that the pump will remain inop
erative.
3. Allow the pump to completely cool if
overheated.
4. Check the temperature and make
sure pump is cool 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-06760
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Discharge check valve contami
nated, damaged, or unable to seat.
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
Air compressor damaged or belts bro
ken.
Strainer clogged. Check strainer and clean if neces
Eductor clogged. Check and clean eductor.
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
Clean or replace check valve.
leaking or worn seal or gasket.
bypass line if needed. See INSTAL
LATION.
Check and repair/replace.
sary.
leaking or worn seal or gasket.
TROUBLESHOOTING PAGE D - 1
Page 19
OM-06760
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PA SERIES
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)
PUMP REQUIRES
TOO MUCH
POWER
Strainer clogged.
Discharge check valve clogged.
Suction intake not submerged at
proper level or sump too small.
Impeller or other wearing parts worn
or damaged.
Discharge head too high.
Suction lift too high.
Pump speed too slow. Check engine output; consult en
Belt or flexible coupling broken. Check and replace as necessary.
Pump speed too high. Check engine output.
Extreme ambient temperature. Reduce pump output.
Discharge head too low.
Fuel filter clogged. Check & replace often in extreme
Check strainer and clean if neces
sary.
Check and clean check valve.
Check installation and correct
submergence as needed.
Replace worn or damaged parts.
Check that impeller is properly
centered and rotates freely.
Free impeller of debris.Impeller clogged.
Install bypass line.
Measure lift w/vacuum gauge. Re
duce lift and/or friction losses in
suction line.
gine operation manual.
Adjust discharge valve.
operating conditions.
PUMP CLOGS
FREQUENTLY
EXCESSIVE NOISE
Dilute if possible.Liquid solution too thick.
Check and replace as required.Fuel contaminated.
Pump bearing(s) frozen. Disassemble, check and replace
bearing(s) as required..
Discharge flow too slow.
Liquid solution too thick.
Cavitation in pump. Reduce suction lift and/or friction
Pumping entrained air.
Impeller clogged or damaged.
Open discharge valve fully to in
crease flow rate, and run engine at
maximum governed speed.
Dilute if possible.
losses in suction line. Record vac
uum and pressure gauge readings
and consult local representative or
factory.
Locate and eliminate source of air
bubble.
Secure mounting hardware.Pump or drive not securely mounted.
Clean out debris; replace damaged
parts.
TROUBLESHOOTINGPAGE D - 2
Page 20
PA SERIES
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
OM-06760
BEARINGS RUN
TOO HOT
Bearing temperature is high, but
within limits.
Low or incorrect lubricant.
Suction and discharge lines not prop
erly supported.
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.
Record keeping is an essential component of a
good preventive maintenance program. Changes
in suction and discharge gauge readings (if so
Check bearing temperature regu
larly to monitor any increase.
Check for proper type and level of
lubricant.
Check piping installation for proper
support.
Align drive properly.Drive misaligned.
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.
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.
TROUBLESHOOTING PAGE D - 3
Page 21
OM-06760
PA SERIES
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.
TROUBLESHOOTINGPAGE D - 4
Page 22
PA SERIES
OM-06760
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 PA14B60-B-6090H
Based on 70F (21C) 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
gravity, elevation, temperature, and impeller trim.
Contact the Gorman‐Rupp Company to verify per
formance or part numbers.
Pump speed and operating condition
If your pump serial number is followed by an “N”,
your pump is NOT a standard production model.
MAINTENANCE & REPAIR PAGE E - 1
points must be within the continuous per
formance range shown on the curve.
Page 23
OM-05731 PA SERIES
PARTS PAGE
ILLUSTRATION
Figure 1. Pump Model PA14B60-B-6090H
MAINTENANCE & REPAIRPAGE E - 2
Page 24
PA SERIES
OM-06760
PARTS LIST
Pump Model PA14B60-B-6090H
(From S/N 1593852 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 MODEL ASSY 46133-562 1
2 6090H POWER UNIT 46143-184 1
3 FLAT WASHER K10 15991 10
4 LOCK WASHER J10 15991 5
5 HEX NUT D10 15991 5
6 HEX HEAD CAP SCREW B1008 15991 3
7 FLAT WASHER K12 15991 4
8 LOCK WASHER J12 15991 2
9 HEX NUT D12 15991 2
10 HEX HEAD CAP SCREW B1209 15991 2
11 HEX HEAD CAP SCREW B1010 15991 2
12 COUPLING GUARD ASSEMBLY 42341-058 1
NOT SHOWN:
PART NAME
COUPLING ASSEMBLY 24360-303 1
PRIME AIRE PLUS DECAL 38812-110 2
CAUTION DECAL 2613FJ 1
WARNING DECAL 2613FE 1
G‐R DECAL 6 IN GR-06 2
GUARD WARNING DECAL 38816-062 2
PART
NUMBER
QTY
INDICATES PARTS RECOMMENDED FOR STOCK
MAINTENANCE & REPAIR PAGE E - 3
Page 25
OM-05731 PA SERIES
ILLUSTRATION
Figure 2. PA14B60-B-(6090H) Pump Assembly
MAINTENANCE & REPAIRPAGE E - 4
Page 26
PA SERIES
OM-06760
PARTS LIST
Pump Model PA14B60-B-(6090H)
ITEM
NO.
1 PUMP ASSEMBLY 46133-561 1
2 HEX NUT D12 15991 4
3 LOCK WASHER J12 15991 4
4 NAMEPLATE 38818-156 13000 1
5 DRIVE SCREW BM#04-03 17000 4
6 GASKET 38685-810 18000 1
7 HEX HEAD CAP SCREW B1212 15991 4
8 SUPPORT ASSEMBLY 41888-372 24150 1
9 PIPE PLUG P04 15079 1
10 LOCK WASHER J08 15991 4
11 HEX HEAD CAP SCREW B0807 15991 4
12 SUCTION SUPPORT ASSEMBLY 41888-371 24150 1
13 14" SPOOL FLANGE 38642-623 10000 1
14 GASKET 25113-034 1
15 4" BLIND FLANGE ASSEMBLY 42111-358 1
16 HEX HEAD CAP SCREW B1007 15991 8
17 LOCK WASHER J10 15991 8
18 HEX NUT D16 15991 12
19 LOCK WASHER J16 15991 12
20 PRIMING CHAMBER KIT 48275-005 1
21 SUPPORT BRACKET 34837-006 15080 1
22 CHECK VALVE KIT 14" 48274-009 1
NOT SHOWN:
PART NAME
-14” CHECK VALVE 26642-128 1
-CHECK VALVE COVER GASKET 26688-016 1
-CHECK VALVE FLAPPER 26688-015 1
-CHECK VALVE FLANGE GASKET 25113-041 1
SUCTION STICKER 6588AG 1
DISCHARGE STICKER 6588BJ 1
G‐R DECAL 6 IN GR-06 1
WARNING DECAL 2613FE 1
LUBRICATION DECAL 11421A 1
OIL LEVEL DECAL 38816-123 1
INSTRUCTION TAG 38817-085 1
14" STRAINER 46641-026 24150 1
PART
NUMBER
QTY
INDICATES PARTS RECOMMENDED FOR STOCK
MAINTENANCE & REPAIR PAGE E - 5
Page 27
OM-05731 PA SERIES
ILLUSTRATION
Figure 3. John Deere 6090H Power Unit
MAINTENANCE & REPAIRPAGE E - 6
Page 28
PA SERIES
ITEM
PART NAME PART
NO.
PARTS LIST
John Deere 6090H Power Unit
NUMBER
QTY ITEM
PART NAME PART
NO.
OM-06760
QTY
NUMBER
1 BASE/FUEL TANK ASSY 41553-052 24150 1
2 GEAR BOX 24572-211 1
3 J. D. 6090H ENGINE 29224-363 1
4 LIFT BAIL KIT 44715-055 1
5 CONT PANEL INST KIT 48122-544 1
6 FLAT WASHER K10 15991 4
7 HEX HEAD CAP SCREW B1008 15991 4
8 LOCK WASHER J10 15991 4
9 HEX NUT D10 15991 4
10 LOCK WASHER 21171-536 12
11 HEX HEAD CAP SCREW 22645-166 12
12 HEX HEAD CAP SCREW B0807 15991 8
13 LOCK WASHER J08 15991 8
14 LOCK WASHER J16 15991 2
15 HEX NUT D16 15991 2
16 FLAT WASHER K16 15991 2
17 HEX HEAD CAP SCREW B1616 15991 2
18 KEY N1624 15990 1
19 HOSE BARB FTG 26523-047 5
20 CONNECTOR S1598 3
21 HOSE 1/2 18513-113 1
22 MALE ELBOW 26341-310 1
23 HOSE ASSEMBLY 46341-036 1
24 VENTURI MTG BRACKET 41888-201 24150 1
25 RED PIPE COUPLING AE1208 15079 1
26 RED PIPE COUPLING AE1608 15079 1
27 VENTURI 26817-001 1
28 PIPE ELBOW R16 15079 1
29 1/2" CHECK VALVE 26641-092 1
30 HOSE BARB FITTING 26523-061 1
31 PRESSURE RELIEF VALVE 26662-028 1
32 PIPE TEE U08 11999 1
33 CONNECTOR 26351-065 1
34 SOC HEAD CAP SCREW BD#10-03S 15991 5
35 FUEL GAUGE 29332-173 1
36 1/2” ID X 7” LG HOSE 18513-303 .1
37 HOSE FITTING ADAPTER 26523-142 2
38 1/2” ID X 14” LG HOSE 18513-303 1
39 AIR VENT S1703 1
40 HOSE BARB FITTING 26523-447 1
41 CABLE TIE 27111-218 1
42 1/2” ID X 32” LG HOSE 18513-113 1
43 HOSE BARB FITTING 26523-389 1
44 REDUCER PIPE BUSHING AP0806 15079 1
45 FUEL PICKUP 29332-149 2
46 REDUCER PIPE BUSHING AP3212 11999 2
47 PIPE NIPPLE T1208 15079 2
48 3/4” ID X 16” LG HOSE 18513-305 1
49 HOSE CLAMP 26518-666 4
50 HOSE BARB FITTING 26523-396 2
51 PIPE PLUG P12 15079 2
52 STREET ELBOW RS12 11999 2
53 PIPE TEE U12 11999 2
54 HOSE BARB FITTING 26523-399 1
55 HOSE BARB FITTING 26523-393 1
56 3/4” ID X 90” LG HOSE 18513-305 1
57 OIL DRAIN ASSEMBLY 46342-048 1
58 BATTERY BOX ASSY 42432-011 1
59 8D BATTERY 29331-528 1
60 2/O CABLE SUB ASS'Y 47311-214 1
61 2/O CABLE SUB ASS'Y 47311-215 1
NOT SHOWN:
FLOAT SWITCH 48312-980 1
INSTRUCTION DECAL 38818-144 1
ENG OPERATING DECAL 38816-347 1
ENGINE STARTUP TAG 38816-269 1
WARNING DECAL 38816-203 6
WARNING DECAL 38816-132 2
FUEL DECAL 38816-196 1
MAINTENANCE & REPAIR PAGE E - 7
Page 29
OM-05731 PA SERIES
ILLUSTRATION
Figure 4. John Deere 6090H Power Unit (Cont'd)
MAINTENANCE & REPAIRPAGE E - 8
Page 30
PA SERIES
ITEM
PART NAME PART
NO.
PARTS LIST
John Deere 6090H Power Unit (Cont'd)
NUMBER
QTY ITEM
PART NAME PART
NO.
OM-06760
QTY
NUMBER
1 BASE/FUEL TANK ASSY 41553-052 24150 1
2 GEAR BOX 24572-211 1
3 J. D. 6090H ENGINE 29224-363 1
4 LIFT BAIL KIT 44715-055 1
5 CONT PANEL INST KIT 48122-544 1
6 FLAT WASHER K10 15991 4
7 HEX HEAD CAP SCREW B1008 15991 4
8 LOCK WASHER J10 15991 4
9 HEX NUT D10 15991 4
10 LOCK WASHER 21171-536 12
11 HEX HEAD CAP SCREW 22645-166 12
12 HEX HEAD CAP SCREW B0807 15991 8
13 LOCK WASHER J08 15991 8
14 LOCK WASHER J16 15991 2
15 HEX NUT D16 15991 2
16 FLAT WASHER K16 15991 2
17 HEX HEAD CAP SCREW B1616 15991 2
18 KEY N1624 15990 1
19 HOSE BARB FTG 26523-047 5
20 CONNECTOR S1598 3
21 HOSE 1/2 18513-113 1
22 MALE ELBOW 26341-310 1
23 HOSE ASSEMBLY 46341-036 1
24 VENTURI MTG BRACKET 41888-201 24150 1
25 RED PIPE COUPLING AE1208 15079 1
26 RED PIPE COUPLING AE1608 15079 1
27 VENTURI 26817-001 1
28 PIPE ELBOW R16 15079 1
29 1/2" CHECK VALVE 26641-092 1
30 HOSE BARB FITTING 26523-061 1
31 PRESSURE RELIEF VALVE 26662-028 1
32 PIPE TEE U08 11999 1
33 CONNECTOR 26351-065 1
34 SOC HEAD CAP SCREW BD#10-03S 15991 5
35 FUEL GAUGE 29332-173 1
36 1/2” ID X 7” LG HOSE 18513-303 .1
37 HOSE FITTING ADAPTER 26523-142 2
38 1/2” ID X 14” LG HOSE 18513-303 1
39 AIR VENT S1703 1
40 HOSE BARB FITTING 26523-447 1
41 CABLE TIE 27111-218 1
42 1/2” ID X 32” LG HOSE 18513-113 1
43 HOSE BARB FITTING 26523-389 1
44 REDUCER PIPE BUSHING AP0806 15079 1
45 FUEL PICKUP 29332-149 2
46 REDUCER PIPE BUSHING AP3212 11999 2
47 PIPE NIPPLE T1208 15079 2
48 3/4” ID X 16” LG HOSE 18513-305 1
49 HOSE CLAMP 26518-666 4
50 HOSE BARB FITTING 26523-396 2
51 PIPE PLUG P12 15079 2
52 STREET ELBOW RS12 11999 2
53 PIPE TEE U12 11999 2
54 HOSE BARB FITTING 26523-399 1
55 HOSE BARB FITTING 26523-393 1
56 3/4” ID X 90” LG HOSE 18513-305 1
57 OIL DRAIN ASSEMBLY 46342-048 1
58 BATTERY BOX ASSY 42432-011 1
59 8D BATTERY 29331-528 1
60 2/O CABLE SUB ASS'Y 47311-214 1
61 2/O CABLE SUB ASS'Y 47311-215 1
NOT SHOWN:
FLOAT SWITCH 48312-980 1
INSTRUCTION DECAL 38818-144 1
ENG OPERATING DECAL 38816-347 1
ENGINE STARTUP TAG 38816-269 1
WARNING DECAL 38816-203 6
WARNING DECAL 38816-132 2
FUEL DECAL 38816-196 1
MAINTENANCE & REPAIR PAGE E - 9
Page 31
OM-05731 PA SERIES
ILLUSTRATION
Figure 5. Pump Model Assembly
MAINTENANCE & REPAIRPAGE E - 10
Page 32
PA SERIES
OM-06760
PARTS LIST
Pump Model Assembly
ITEM
NO.
1 PUMP CASING 38219-503 11010 1
2 PIPE PLUG P12 15079 3
3 PIPE PLUG P04 15079 1
4 STUD C1211 15991 8
5 WEAR RING 38691-640 11010 1
6 FLAT HEAD CAP SCREW F0403 17090 4
7 REPAIR ROTATING ASSEMBLY 44163-615 1
8 LOCK WASHER J12 15991 8
9 HEX NUT D12 15991 8
10 O‐RING 25152-387 1
11 STUD C1616 15991 12
INCLUDED W/REPAIR PUMP CASING ASSY 46474-361 1
INDICATES PARTS RECOMMENDED FOR STOCK
PART NAME
PART
NUMBER
QTY
MAINTENANCE & REPAIR PAGE E - 11
Page 33
OM-05731 PA SERIES
ILLUSTRATION
Figure 6. Repair Rotating Assembly
MAINTENANCE & REPAIRPAGE E - 12
Page 34
PA SERIES
OM-06760
PARTS LIST
Repair Rotating Assembly
ITEM
NO.
1 IMPELLER 38614-803 11010 1
2 SHIM SET 48261-033 1
3 3.25" MECH SEAL 25285-822 1
4 SHAFT SLEEVE 31163-022 17000 1
5 O‐RING 25152-150 1
6 SEAL PLATE 38272-722 11010 1
7 SEAL CAVITY SIGHT GAUGE S1471 2
7A BEARING CAVITY SIGHT GAUGE S1471 2
8 LIP SEAL 25227-856 1
8A LIP SEAL 25227-856 1
9 REDUCER PIPE BUSHING AP1202 15079 1
10 AIR VENT S1530 1
10A AIR VENT S1530 1
11 O‐RING 25152-177 1
12 LOCK WASHER J10 15991 14
13 HEX HEAD CAP SCREW B1007 15991 14
14 PEDESTAL 38257-210 10000 1
15 PIPE PLUG P12 15079 2
15A BEARING CAVITY DRAIN PLUG P12 15079 2
15B SEAL CAVITY DRAIN PLUG P12 15079 1
16 BEARING CAP 38322-434 10000 1
17 OIL SEAL 25258-845 1
18 BEARING CAP GASKET 38683-664 19060 1
19 BEARING LOCKNUT 23962-015 1
20 LOCKING TAB COLLAR 23962-515 1
21 BEARING 23422-417 1
22 KEY N1020 15990 1
23 IMPELLER SHAFT 38512-537 16000 1
24 KEY N0812 15990 1
25 ROLLER BEARING 23535-001 1
26 ROLL PIN S2197 1
27 SOCKET HEAD CAP SCREW BD1206 15990 1
28 IMPELLER WASHER 31167-041 17000 1
29 O‐RING 25152-387 1
30 SHIPPING PLUG 11495C 15079 2
NOT SHOWN:
PART NAME
INSTRUCTION TAG 6588U 1
PART
NUMBER
QTY
INDICATES PARTS RECOMMENDED FOR STOCK
MAINTENANCE & REPAIR PAGE E - 13
Page 35
OM-05731 PA SERIES
ILLUSTRATION
Figure 7. Priming Chamber Kit
ITEM
NO.
1 PRIMING CHAMBER ASSY 46112-709 1
2 PIPE BUSHING AP1608 11999 1
3 STREET ELBOW RS08 11999 1
4 BALL VALVE 26631-052 1
5 STUD C0809 15991 4
6 HEX NUT D08 15991 4
7 LOCK WASHER J08 15991 4
8 GASKET 38687-053 19060 1
9 BAFFLE 31113-011 17000 1
INDICATES PARTS RECOMMENDED FOR STOCK
PART NAME
PART
NUMBER
MAINTENANCE & REPAIRPAGE E - 14
QTY
Page 36
PA SERIES
OM-06760
ILLUSTRATION
Figure 8. Priming Chamber Assembly
PARTS LIST
ITEM
NO.
1 PRIMING VALVE 26664-007 1
2 HEX HD CAPSCREW B0806 15991 8
3 LOCKWASHER J08 15991 8
4 PRIMING VALVE GASKET 38683-657 19060 1
5 PRIMING CHAMBER 38343-020 10000 1
6 STRAINER ASSY 46641-222 17000 1
INDICATES PARTS RECOMMENDED FOR STOCK
MAINTENANCE & REPAIR PAGE E - 15
PART NAME
-ORIFICE BUTTON 26688-021 1
PART
NUMBER
QTY
Page 37
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de
cals attached to the pump.
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 illustrations (see Figures 1 through 8) and the
corresponding Parts Lists. Maintenance and repair
instructions for the engine is covered separately in
specific literature available from the manufacturer.
This manual will alert personnel to known proce
dures 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 per
sonnel to ensure that only safe, established main
tenance procedures are used, and that any proce
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac
tices.
Some pump service functions may be performed
without separating the pump end assembly from
the engine. However, the priming chamber (20,
Figure 2) and discharge check valve assembly (22,
Figure 2) must be removed to service most pump
components. The following instructions assume
complete disassembly of the pump is required.
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 and drain the pump cas
ing by removing the lowermost pipe plug (2, Figure
5). Clean and reinstall the plug.
PA SERIESOM-06760
This manual will alert personnel to
known procedures which require spe
cial attention, to those which could
damage equipment, and to those which
could be dangerous to personnel. How
ever, this manual cannot possibly antici
pate and provide detailed instructions
and 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 estab
lishing that neither personal safety nor
pump integrity are compromised by
such practices.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Shut down the engine and discon
nect the positive battery cable to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature and make
sure it is cool before opening any
covers, plates, gauges, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau
tiously.
7. Drain the pump.
Death or serious personal injury and
damage to the pump or components
MAINTENANCE & REPAIRPAGE E - 16
Page 38
PA SERIES
OM-06760
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
Use only replacement parts provided or
approved by Gorman‐Rupp. Use of non‐
authorized parts may result in damage to
the equipment and/or injury to personnel
and will invalidate the warranty.
Priming Chamber Removal and Disassembly
(Figure 7)
Disconnect both the suction piping and the air dis
charge tubing from the priming chamber assembly
(20, Figure 2). Support the priming chamber as
sembly using a sling and a suitable lifting device.
Remove the hardware (6 and 7) and separate the
priming chamber assembly, gasket (8) and baffle
(9) from the spool (13, Figure 2).
ton may require replacement. To replace the orifice
button, remove one of the “e‐clips” from the pivot
pin closest to the orifice button and remove the piv
ot pin. This will allow the linkage to be raised high
enough to access the orifice button.
Remove the hex nut and lock washer securing the
orifice button to the linkage bar and unscrew the
orifice button from the linkage bar.
Discharge Check Valve Removal and
Disassembly
(Figure 2)
Remove the hardware (not shown) securing the
discharge check valve bracket to the base.
Support the discharge check valve assembly (22)
using a sling and a suitable lifting device. Remove
the attaching hardware and separate the dis
charge check valve assembly and gasket from the
pump assembly (1).
The flapper and cover O‐ring are the only service
able parts of the check valve. If the flapper requires
replacement, remove the hardware securing the
cover. Separate the cover and O‐ring and remove
the flapper.
Pump Casing Removal
(Figure 5)
Remove the uppermost pipe plug (2) from the
pump casing and install a lifting eye in the hole. Be
sure to screw the lifting eye tightly into the hole as
far as it will go. Attach a sling and suitable lifting de
vice to the lifting eye and support the pump casing.
(Figure 8)
Remove the hardware (2 and 3) securing the prim
ing valve (1) to the priming chamber (5). Carefully
lift the valve components from the priming cham
ber. Remove the gasket (4) and clean the mating
surfaces.
If the priming valve float is stuck or the strainer (6) is
clogged, it can usually be cleaned without further
disassembly.
The only serviceable part of the priming valve is the
orifice button (not shown). If liquid continues to by
pass through the priming chamber after adjusting
the orifice button (see Priming Chamber Reas
sembly and Installation for adjustment), the but
MAINTENANCE & REPAIR PAGE E - 17
Remove the hardware (8 and 9) and use the lifting
device to pull the pump casing straight away from
the rotating assembly (7).
Remove and discard the pump casing O‐ring (10).
Inspect the wear ring (5) for excessive wear and
scoring. If replacement is required, remove the
screws (6) securing it to the pump casing. Install
four 3/4-16 UNC-2B capscrews (not supplied) in
the holes in the wear ring and use the screws to
press the wear ring out of the pump casing.
Draining Oil From Seal Cavity
(Figure 6)
If any further disassembly is to be performed on the
pump, the seal oil cavity must be drained to pre
Page 39
PA SERIESOM-06760
vent the oil in the seal cavity from escaping as the
impeller is removed.
Position a clean container under the seal cavity
drain plug (15B). Remove the plug and drain the oil
from the seal cavity into the container. For shorter
drain time, remove the air vent (10). When the oil is
drained, clean and reinstall the drain plug and air
vent. Inspect the oil for water, dirt or a cloudy condi
tion which could indicate seal failure.
Impeller Removal
(Figure 6)
With the pump casing removed, use an impact
wrench with a hex key to loosen the impeller caps
crew (27). Remove the capscrew, impeller washer
(28) and roll pin (26).
Use a suitable three‐jawed puller to remove the im
peller (1) and key (24) from the shaft (23). Use cau
tion when removing the impeller; tension on the
shaft seal spring will be released as the impeller is
removed.
Use a pair of stiff wires with hooked ends to remove
the stationary element from the seal plate bore.
An alternate method of removing the stationary
seal components is to remove the hardware (12
and 13) and separate the seal plate from the ped
estal (14). Position the seal plate on a flat surface
with the impeller side down. Use a wooden dowel
or other suitable tool to press on the back side of
the stationary element until the element and its O‐
ring can be removed.
Remove and discard the seal plate O‐ring (29) and
bearing housing O‐ring (11).
If no further disassembly is required, refer to Seal
Installation.
Separating Pedestal From Gearbox
(Figure 1)
Further disassembly requires separating the ped
estal from the base assembly (1, Figure 3). Disen
gage the hardware securing the coupling guard
(12) and remove the guard.
NOTE
An alternate method of removing the impeller is to
insert a pair of wedges 180_ apart between the im
peller and seal plate (6). Tap the wedges evenly in
an alternating pattern to “walk” the impeller off the
shaft.
Remove the impeller adjusting shims (2); tie and
tag the shims, or measure and record their thick
ness for ease of reassembly.
Inspect the impeller and replace if cracked or badly
worn.
Seal Removal
(Figures 6 and 9)
Remove the spring centering washer and seal
spring. Slide the shaft sleeve (4) and rotating por
tion of the seal off the shaft as a unit.
Remove the hardware securing the drive coupling
(not shown) to the gearbox and impeller shafts and
separate the halves of the coupling.
Support the pedestal using a hoist and sling. See
Figure 2 and remove the hardware (2, 3 and 7) se
curing the pedestal to the support assembly (8).
Move the pedestal to a clean, well equipped shop
area for further disassembly.
Shaft and Bearing Removal and Disassembly
(Figure 6)
When the pump is properly operated and main
tained, the bearing housing should not require dis
assembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.
Apply oil to the shaft sleeve and work it up under
the rubber bellows. Slide the rotating portion of the
seal off the shaft sleeve. Remove the shaft sleeve
O‐ring (5).
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
MAINTENANCE & REPAIRPAGE E - 18
Page 40
PA SERIES
Remove the bearing housing drain plug (15A) and
drain the lubricant. Clean and reinstall the drain
plug.
OM-06760
If not removed with the seal assembly, remove the
hardware (12 and 13) and separate the seal plate
(6) from the pedestal (14). Remove the pedestal
O‐ring (11).
Disengage the hardware (12 and 13) and remove
the bearing cap (16), gasket (18) and oil seal (17).
Press the oil seal from the drive flange.
Place a block of wood against the impeller end of
the shaft (23) and tap the shaft and assembled
bearings (21 and 25) from the bearing housing.
Press the oil seals (8 and 8A) from the pedestal.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear
ings are removed.
Clean the bearing housing, shaft and all compo
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.
Bearings must be kept free of all dirt and
foreign material. Failure to do so will great
ly shorten bearing life. Do not spin dry
bearings. This may scratch the balls or
races and cause premature bearing fail
ure.
Rotate the bearings by hand to check for rough
ness or binding and inspect the bearing rollers and
balls. If rotation is rough or the rollers or bearing
balls are discolored, replace the bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the pedestal.
Replace the bearings, shaft, or pedestal if the
proper bearing fit is not achieved.
If bearing replacement is required, straighten the
tab on the bearing lock washer (20). Use a spanner
wrench to remove the bearing lock nut (19). Re
move the bearing lock washer.
Use a bearing puller to remove the inboard and
outboard bearings from the shaft.
Shaft and Bearing Reassembly and Installation
(Figure 6)
Inspect the shaft (25) for distortion, nicks or
scratches, or for thread damage on the impeller
end. Dress small nicks and burrs with a fine file or
emery cloth. Replace the shaft if defective.
Clean and inspect the bearings as indicated in
Shaft and Bearing Removal and Disassembly.
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.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
MAINTENANCE & REPAIR PAGE E - 19
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear
ings are removed.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or
Page 41
PA SERIESOM-06760
hot plate may be used to heat the bearings. Bear
ings should never be heated with a direct flame or
directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thor
oughly filtered.
NOTE
Position the outboard bearing (21) on the shaft with
the retaining ring on the bearing O.D. toward the
drive end of the shaft. The inboard bearing (27) is
equipped with a flange ring that is shipped loose
with the bearing. Install the flange ring on the shaft
prior to heating and installing the bearings.
Heat the bearings to a uniform temperature no
higher than 250F (120C) and slide the bearings
onto the shaft, one at a time, until they are fully
seated against the shaft shoulders. This should be
done quickly, in one continuous motion, to prevent
the bearings from cooling and sticking on the shaft.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
during cooling. If movement has occurred, use a
suitably sized sleeve and a press to reposition the
bearings against the shaft shoulders.
an old lock washer may create a pre‐load
condition on the bearing, resulting in pre
mature bearing failure.
Install the bearing lockwasher (20) and screw the
bearing locknut (19) onto the shaft until tight.
Torque the bearing lock nut to (150 ft. lbs. (20,8 m.
kg.). After torquing, locate the tab on the lock
washer that aligns with a slot in the lock nut and
bend the tab over into the slot.
Apply a light coating of oil to the lip of the inboard oil
seal (8A) and press it into the pedestal bore with
the lip positioned as shown in Figure 6. Press the
oil seal into the pedestal until the face is just flush
with the machined surface on the pedestal.
It is recommended that a sleeve be positioned
against the inboard oil seal to prevent the lip of the
oil seal from rolling as the shaft and bearings are
installed in the pedestal. The O.D. of the sleeve
should be just smaller than the bearing housing
bore, while the I.D. of the sleeve should be just larg
er than the O.D. of the lip seal area of the shaft.
With the lip seal sleeve in place, lubricate the lip
seal area of the shaft and slide the shaft and as
sembled bearings into the bearing housing until
the retaining ring on the outboard bearing seats
against the pedestal. Remove the lip seal sleeve.
If heating the bearings is not practical, use a suit
ably sized sleeve and an arbor (or hydraulic) press
to install the bearings on the shaft.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, rollers or cage. Press only on
the inner race.
It is recommended that a new bearing lock
washer (20) be installed any time the shaft
and bearings are disassembled. Re‐use of
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls, rollers or cages.
Apply a light coating of oil to the lip of the outboard
oil seal (8) and press it into the pedestal with the lip
positioned as shown in Figure 6. The face of the oil
seal should be just flush with the outer face of the
bearing cap.
Apply a light coating of oil to the lip of the oil seal
(17) and press it into the drive flange (16) with the
lip positioned as shown in Figure 6. The oil seal
should be centered in the flange bore.
Install the gasket (18) and slide the assembled
drive flange and oil seal over the impeller shaft. Use
caution not to cut or roll the lip of the oil seal (17) on
the shaft keyway. Secure the drive flange to the
pedestal with the hardware (12 and 13). Torque the
capscrews (13) to 60 ft. lbs. (8,3 m. kg.).
MAINTENANCE & REPAIRPAGE E - 20
Page 42
PA SERIES
OM-06760
Lubricate the bearings as indicated in LUBRICA
TION at the end of this section.
Securing Pedestal to Gearbox and Base
(Figure 1)
Install the shaft key (22, Figure 6) in the shaft key
way.
See Figure 2 and use a suitable lifting device to po
sition the pedestal assembly on the support (8)
and secure it with the previously removed hard
ware (2, 3 and 7).
Realign the halves of the coupling as described in
Installation, Section B and secure them to the gear
box and pedestal shafts.
Reinstall the coupling guard (12, Figure 1) and se
cure it with the previously removed hardware.
Seal Reassembly and Installation
(Figures 6 and 9)
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.
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Inspect the stationary
seat bore in the seal plate for dirt, nicks and burrs,
and remove any that exist. The stationary seat bore
must be completely clean before installing the
seal.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema
ture failure.
To ease installation of the seal, lubricate the sta
tionary element O‐ring with a very small amount of
light lubricating oil. See Figure 9 for seal part identi
fication.
MAINTENANCE & REPAIR PAGE E - 21
Page 43
PA SERIESOM-06760
SPRING
IMPELLER
SHAFT
KEY
IMPELLER
SHAFT
SPRING
CENTERING
WASHER
RETAINER
IMPELLER
SHIMS
BELLOWS
ROTATING
ELEMENT
SEAL PLATE
O‐RING
SLEEVE
O‐RING
SHAFT
SLEEVE
STATIONARY
ELEMENT
Figure 10. Seal Assembly
This seal is not designed for operation at
temperatures above 160F (71C). Do not
use at higher operating temperatures.
If the seal plate (6) was removed, lubricate the ped
estal O‐ring (11) with grease and install it on the
pedestal shoulder. Position the seal plate over the
shaft and secure it to the pedestal with the hard
ware (12 and 13).
Press the stationary element and its O‐ring into the
seal plate until fully seated in the seal plate bore. A
push tube cut from a length of plastic pipe would
aid this process. The I.D. of the tube should be
slightly larger than the O.D. of the shaft sleeve (7).
Install the shaft sleeve O‐ring (5) in the groove in
the I.D. of the sleeve. Lubricate the O‐ring and the
O.D. of the shaft sleeve with “P-80 Emulsion” or
water. Do not use oil or any substitute lubricant
other than water.
Slide the rotating subassembly (consisting of the
rotating element, retainer and bellows) onto the
sleeve until the rotating element is just flush with
the chamfered end of the sleeve. Slide the shaft
sleeve and rotating subassembly onto the shaft
until the seal faces contact and the shaft sleeve
seats against the shoulder on the impeller shaft.
Install the seal spring and spring centering washer.
Lubricate the seal assembly as indicated in
LUBRICATION, after the impeller has been in
stalled.
Impeller Installation and Adjustment
(Figure 6)
Inspect the impeller (1) and replace it if cracked or
badly worn.
Install the same thickness of adjusting shims (2) as
previously installed. Install the impeller key (24) in
the shaft keyway. Align the keyway in the impeller
with the shaft key and press the impeller onto the
shaft until fully seated.
A clearance of .025 to .040 inch (0,64 to 1,02 mm)
between the impeller and the seal plate is neces
MAINTENANCE & REPAIRPAGE E - 22
Page 44
PA SERIES
OM-06760
sary for maximum pump efficiency. Measure this
clearance and add or remove impeller adjusting
shims as required.
Apply `Loctite Retaining Compound No. 242' or
equivalent to the threads of the impeller capscrew
(27). Install the roll pin (26) in the hole in the impel
ler. Position the impeller washer over the end of the
impeller shaft so the hole in the washer aligns with
the roll pin. Block impeller rotation as described in
Impeller Removal and torque the impeller caps
crew to 200 ft. lbs. (27,6 m. kg.).
Pump Casing and Wear Ring Installation
(Figure 5)
If the wear ring (5) was removed, position the re
placement wear ring in the pump casing (1) so the
holes in the wear ring for the screws (6) align with
the tapped holes in the pump casing and use an
arbor (or hydraulic) press to press it into the casing
until fully seated. Apply `Loctite Retaining Com
pound No. 242' or equivalent to the threads of the
screws (6) and use the screws to secure the wear
ring to the pump casing.
Lubricate the O‐ring (10) with light grease and in
stall it in the groove in the O.D. of the seal plate.
Install a lifting eye in the uppermost hole in the
pump casing (1) for the pipe plug (2). Be sure to
screw the lifting eye tightly into the hole as far as it
will go. Attach a sling and suitable lifting device to
the lifting eye and use the lifting device to position
the pump casing over the rotating assembly. Install
the hardware (8 and 9) on the studs (4) and use the
hardware to fully seat the pump casing against the
seal plate (6, Figure 6).
Remove the lifting eye from the pump casing and
reinstall the pipe plug (2).
Discharge Check Valve Reassembly and
Installation
(Figure 2)
If the discharge check valve (22) was disas
sembled to replace the flapper or cover gasket,
position the flapper in the valve body and check to
ensure free movement.
Apply a small amount of light grease to the dis
charge flange gasket to hold it in place and posi
tion it against the pump casing flange. Support the
discharge check valve assembly using a sling and
a suitable lifting device. Using the previously re
moved hardware, secure the discharge check
valve assembly and flange gasket to the pump as
sembly (1). Secure the discharge check valve to its
support bracket using the previously removed
hardware.
Priming Chamber Assembly and Installation
(Figure 8)
Clean and inspect the components of the priming
valve (1). Inspect the linkage and ensure the orifice
button (not shown) squarely engages the valve
seat. Replace the orifice button if required (see
Priming Chamber Removal and Disassembly
for orifice button removal).
If the orifice button was removed, screw the new
orifice button into the linkage bar until fully seated.
Align the hole in the linkage bar with the holes in the
bracket and reinstall the pivot pin. Secure the pivot
pin with the previously removed “e‐clip”.
Adjust the orifice button seating as necessary by
screwing the orifice button into or out of the linkage
bar. Proper adjustment is achieved when the ori
fice button fully seats against the orifice before the
linkage bar on the float bottoms against the
threads on the orifice button. When adjustment is
complete, install and tighten the lock washer and
hex nut securing the orifice button.
Install the strainer (6) and priming valve gasket (4).
Lower the float into the priming chamber (5) and
secure the priming valve with the previously re
moved hardware (2 and 3).
(Figure 7)
Install the baffle and gasket (8 and 9) and use a
sling and suitable lifting device to position the prim
ing chamber assembly on the pump suction spool
(13, Figure 2). Secure the priming chamber as
sembly with the hardware (6 and 7).
Install the valve cover gasket and secure the cover
to the body with the previously removed hardware.
MAINTENANCE & REPAIR PAGE E - 23
Reconnect both the suction piping and the air dis
charge tubing to the priming chamber assembly.
Page 45
PA SERIESOM-06760
LUBRICATION
Seal Assembly
(Figure 6)
Before starting the pump, remove the air vent (10)
and fill the seal cavity with approximately 240
ounces (7 liters) of SAE No. 30 non‐detergent oil to
the center of the sight gauge (7). Clean and rein
stall the vented plug. Check the oil level regularly
and maintain it at the middle of the sight gauge.
Bearings
(Figure 6)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level regu
larly through the sight gauge (7A) and maintain it at
the midpoint of the gauge. When lubrication is re
quired, remove the air vent (10A) and add SAE No.
30 non‐detergent oil through the opening. When
lubricating a dry (overhauled) intermediate, fill the
bearing cavity with approximately 50 ounces (1,5
liters). Clean and reinstall the air vent. Do not over‐
lubricate. Over‐lubrication can cause the bearings
to over‐heat, resulting in premature bearing failure.
NOTE
The white reflector in the sight gauge must be posi
tioned horizontally to provide proper drainage.
Under normal conditions, drain the bearing hous
ing once each year and refill with clean oil. Change
the oil more frequently if the pump is operated con
tinuously or installed in an environment with rapid
temperature change.
Monitor the condition of the bearing lubri
cant regularly for evidence of rust or mois
ture condensation. This is especially im
portant in areas where variable hot and
cold temperatures are common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
Engine
Consult the literature supplied with the engine, or
contact your local engine representative.
MAINTENANCE & REPAIRPAGE E - 24
Page 46
For Warranty Information, Please Visit
www.grpumps.com/warranty
or call:
U.S.: 419-755-1280
Canada: 519-631-2870
International: +1-419-755-1352
GORMAN‐RUPP PUMPS
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