Gorman-Rupp Pumps PA4A60-4024T-ESP User Manual

ACDEU

OM−06301−01

January 8, 2010

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

PA SERIES PUMP

MODEL

PA4A60−4024T−ESP

THE GORMAN-RUPP COMPANY  MANSFIELD, OHIO

GORMAN-RUPP OF CANADA LIMITED  ST. THOMAS, ONTARIO, CANADA Printed in U.S.A

www.grpumps.com.

2010 The Gorman-Rupp Company

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:

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 − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Priming PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Routine Operation PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation In Extreme Heat PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATIONAL CHECKS PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Leakage PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Vacuum Check PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Temperature And Overheating PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strainer Check PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STOPPING PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manual Stopping PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Automatic Stopping PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Shutdown System PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i

TABLE OF CONTENTS

(continued)

PERIODIC CHECKS PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Cavity and Bearing Lubrication PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bearing Temperature Check PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Compressor PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Additional Checks PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COLD WEATHER PRESERVATION PAGE C − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PARTS LISTS:

Pump Model PAGE E − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Unit Kit PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Assembly PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump End Assembly PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair Rotating Assembly PAGE E − 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Priming Chamber Kit PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Priming Chamber Assembly PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Drive Assembly PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E − 15. . . . . . . . . . . . . . . . . . . . . . . . .

Priming Chamber Removal And Disassembly PAGE E − 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Discharge Check Valve Removal and Disassembly PAGE E − 16. . . . . . . . . . . . . . . . . . . . . . . . .

Separating Pump And Drive Assembly From Engine PAGE E − 16. . . . . . . . . . . . . . . . . . . . . . . .

Draining Oil From Seal Cavity PAGE E − 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loosening Impeller PAGE E − 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Casing And Wear Plate Removal PAGE E − 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Removal PAGE E − 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Removal PAGE E − 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shaft and Bearing Removal and Disassembly PAGE E − 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shaft and Bearing Reassembly and Installation PAGE E − 19. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Securing Bearing Housing And Drive Assembly To Engine PAGE E − 20. . . . . . . . . . . . . . . . . .

Seal Reassembly and Installation PAGE E − 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Installation And Adjustment PAGE E − 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Casing And Wear Plate Installation PAGE E − 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Discharge Check Valve Reassembly And Installation PAGE E − 24. . . . . . . . . . . . . . . . . . . . . . .

Priming Chamber Assembly And Installation PAGE E − 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LUBRICATION PAGE E − 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Assembly PAGE E − 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bearings PAGE E − 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine PAGE E − 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii

INTRODUCTION

OM−06301PA SERIES

Thank You for purchasing a Gorman-Rupp pump.
Read this manual carefully to learn how to safely

install and operate your pump. Failure to do so
could result in personal injury or damage to the
pump. This Installation, Operation, and Mainte­nance manual is designed to help you achieve the
best performance and longest life from your Gor­man-Rupp pump.

This pump is a PA Series, priming-assisted centrif­ugal model. The unit is designed for handling non­volatile, non-flammable liquids containing speci­fied entrained solids. The basic material of con­struction is ductile iron, with stainless steel shaft
and ductile iron wearing parts. The pump is sur­rounded by a sound-attenuating enclosure.

Because pump installations are seldom identical,
this manual cannot possibly provide detailed in­structions and precautions for every aspect of
each specific application. Therefore, it is the re­sponsibility 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 com­promised by the installation. Pumps and related
equipment must be installed and operated ac­cording to all national, local and industry stan­dards.

The following are used to alert 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
which are not covered in this manual or in other lit­erature accompanying the unit, please contact
your Gorman-Rupp distributor or the Gorman­Rupp Company:

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 en­gine, contact the engine manufacturer’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 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

PA SERIES

SAFETY - SECTION A

This information applies to Prime Aire
Series 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.

r

forming any maintenance. Failure to do
so may result in serious personal injury.

Do not attempt to disengage any part of
an overheated pump unit. Vapor pres­sure within the pump casing can eject
these parts with great force when they
are disengaged. Allow the pump to
completely cool before servicing it.

OM−06301

Before attempting to open or service the
pump:

1. Familiarize yourself with this man­ual.

2. Shut down the engine and discon­nect 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 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 equipped with an automat­ic starting system, and is subject to au­tomatic restart. Keep hands and cloth­ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per-

This pump is designed to handle most
non-volatile, non-flammable liquids
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. Attach lifting equip­ment to the lifting device fitted to the
pump. If chains or cable are wrapped
around the pump to lift it, make certain
that they are positioned so as not to
damage the pump, and so that the load
will be balanced. 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 installed, make
certain that the pump and all piping or

PAGE A − 1SAFETY

PA SERIESOM−06301

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 pres­sure, and cause the pump casing to rup­ture or explode. Momentary closure of a
discharge valve is acceptable only
when required for startup or shutdown
procedures.

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 completely before
servicing.

This pump may be used to handle mate­rials which could cause illness through
direct exposure or emitted fumes. Wear
adequate protective clothing when
working on the pump or piping.

fingers or tools, causing severe injury to
personnel.

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.

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 en­gines 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
Do not operate the pump without guards
in place over the rotating parts. Ex­posed rotating parts can catch clothing,

PAGE A − 2 SAFETY

exceeded. The maximum continuous

operating speed for this pump is 1950

RPM.

PA SERIES OM−06301

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

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 PA4A60C−4024T−ESP

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 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.

PAGE B − 1INSTALLATION

OM−06301 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 in­dicated by the arrow on the pump body
and on the accompanying decal. Other­wise, 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 in­structed.

e. If the pump has 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 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 deter­mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.

POSITIONING PUMP

Use lifting and moving equipment in

good repair and with adequate capacity

to prevent injuries to personnel or dam-

age to equipment. Attach lifting equip-

ment to the lifting device fitted to the

pump. If chains or cable are wrapped

around the pump to lift it, make certain

that they are positioned so as not to

damage the pump, and so that the load

will be balanced. The bail is intended for

use in lifting the pump assembly only.

Suction and discharge hoses and pip-

ing must

be removed from the pump be-

fore 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.

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 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.

PAGE B − 2 INSTALLATION

The pump assembly can be seriously

damaged if the chains or cables 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 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

PA SERIES OM−06301

the brake and blocking the wheels before attempt­ing to operate the pump.

If the pump has been mounted on a mov­able 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 in­creased suction lift, discharge elevation, and fric­tion losses. See the performance curve and oper­ating 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, 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.

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.

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 3 inch (76,2

mm) diameter spherical solids.

PAGE B − 3INSTALLATION

OM−06301 PA SERIES

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.

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 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).

PAGE B − 4 INSTALLATION

PA SERIES OM−06301

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

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 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.

ALIGNMENT

The alignment of the pump and engine is critical for

trouble-free mechanical operation. See Section E,

Securing Intermediate And Drive Assembly To

Engine in MAINTENANCE AND REPAIR, for de-

tails.

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.

Refer to the information which follows for installa-

tion details for the liquid level sensing system pro-

vided with your pump.

PAGE B − 5INSTALLATION

OM−06301 PA SERIES

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 ob­structed or drawn into the suction line. If a flex­ible 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 bot­tom. 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 approxi­mate desired liquid level.

b. In a single float system, the cable can be teth-

ered to the suction line or standpipe approxi­mately 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 approxi­mately 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

PA SERIES

OM−06301

OPERATION − SECTION C

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.

OPERATION

cated (see LUBRICATION in MAINTENANCE

AND REPAIR).

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.

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.

STARTING

Check the fuel level and oil levels in the engine, air

compressor, pump bearings and seal housing.

Make sure the pump is level. Lower the jack stands

and chock the wheels, if so equipped.

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 endan­ger personnel as a result of pump fail­ure.

Pump speed and operating condition
points must be within the continuous per­formance range shown on the perfor­mance curve in Section E on page E−1.

PRIMING

Install the pump and piping as described in IN­STALLATION. Make sure that the piping connec-

tions are tight, and that the pump is securely
mounted. Check that the pump is properly lubri-

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.

Manual Starting

On initial start-up, set the engine speed at in the

half-throttle position. Turn the keyswitch to ‘MANU-

OPERATION PAGE C − 1

OM−06301 PA SERIES

AL’. After the engine starts and the unit is fully
primed, adjust the engine RPM until the desired
flow rate is achieved.

Pump speed and operating condition
points must be within the continuous per­formance range shown on the curve on
Page E-1.

Automatic Starting

With the float system installed, follow the proce­dures outlined for manual starting and throttle ad­justment. Switch the keyswitch to ‘OFF’ until the
water level rises above the on point for the float sys­tem, then turn the keyswitch to the ‘AUTO’ setting.
The unit will run until the float signals the control
that the water in the wet well is at the float off point,
at which time the unit will shut down automatically.
When the float signals the control that the water in
the wet well is at the float on point, the unit will re­start automatically, repeating the cycle.

Priming

The pump will begin to prime upon startup. The air
in the suction line will be discharged from the educ­tor discharge line. Complete priming is indicated
by a positive discharge pressure reading.

Adjust the engine speed to achieve the desired

output. Do not exceed the factory set engine speed

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 Maintenance and Repair, Sec-

tion E for the maximum continuous op-

erating 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 float(s) to allow shorter run and longer

cooling periods, if possible.

If full priming is not achieved, the discharge check
valve may be malfunctioning. If this occurs, shut
down the pump and consult the separate Mainte-

nance and Repair manual for further details.

Routine Operation

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 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 battery before performing

any maintenance. Failure to do so may

result in serious personal injury.

OPERATIONAL CHECKS

Leakage

Once the pump is fully primed, no leakage should

be visible at pump mating surfaces, or at pump

OPERATIONPAGE C − 2

PA SERIES

OM−06301

connections or fittings. Keep all line connections
and fittings tight to maintain maximum pump effi­ciency.

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 pro­portionate to static suction lift, and should then sta­bilize. If the vacuum reading falls off rapidly after
stabilization, an air leak exists. Before checking for
the source of the leak, check the point of installa­tion of the vacuum gauge.

Liquid Temperature And Overheating

The maximum liquid temperature for this pump is
160 F (71C). Do not apply it at a higher operating
temperature.

Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rup­ture or explode. If overheating occurs, stop the
pump immediately and allow it to completely cool
before servicing it. Approach any over-heated

pump cautiously.

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

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.

Reduce the throttle speed slowly and allow the en-

gine to idle briefly before stopping.

In the manual mode, reduce the throttle speed

slowly, and allow the engine to idle briefly before

switching the HAND-OFF-AUTO switch to ‘OFF’.

If the application involves a high discharge

head, gradually close the discharge

Allow an over-heated pump to com­pletely cool before servicing. Do not re­move plates, covers, gauges, or fittings
from an overheated pump. Liquid within
the pump can reach boiling tempera-

throttling valve before stopping the pump.

After stopping the pump, switch off the engine igni-

tion and remove the key to ensure that the pump

will remain inoperative.

tures, and vapor pressure within the
pump can cause parts being disen-

Automatic Stopping

gaged to be ejected with great force. Af­ter 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.

OPERATION PAGE C − 3

In the automatic mode, the pump will stop when

the liquid in the wet well or sump lowers and acti-

vates the Off" float switch(s). The pump will restart

automatically when the liquid rises and activates

the On" float switch(s).

OM−06301 PA SERIES

Safety Shutdown System

The unit is equipped with a safety system to auto­matically shut down the engine under certain con­ditions. The engine will automatically shut down:

1. If the engine exceeds its safe operating tem­perature.

2. If the engine oil pressure drops below design
limits.

3. If the engine fails to start within a pre-set peri­od of time.

4. If the engine speed exceeds the safe operat­ing range.

5. If the engine fan belt breaks.

Lights on the control panel will indicate which of the
safety features has caused the engine to shut
down.

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.
The engine will not restart until the key switch has
been returned to the ‘OFF’ position for at least 10
seconds.

PERIODIC CHECKS

Seal Cavity And Bearing Lubrication

Both the seal and bearing cavities were fully lubri­cated at the factory. Check the lubrication levels
before startup, and regularly thereafter as indi­cated 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 tem­peratures because of heat generated by friction.
Temperatures up to 160F (71C) are considered
normal for bearings, and they can operate safely to
at least 180F (82C).

Checking bearing temperatures by hand is inaccu­rate. Bearing temperatures can be measured ac­curately 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 cor­rect level (see LUBRICATION in Section E, Main-
tenance and Repair). Bearing overheating can
also be caused by shaft misalignment and/or ex­cessive vibration.

All safety shutdown features are pre-set at the fac­tory for optimum performance and safety; do not
attempt to adjust these settings.

Never disconnect any of the safety shut­down features; this will void the warran­ty and could result in serious damage to
the unit and/or injury to personnel. Safe­ty 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 ad­ditional information.

When pumps are first started, the bearings may
seem to run at temperatures above normal. Con­tinued operation should bring the temperatures
down to normal levels.

Air Compressor

The air compressor was lubricated for test at the
factory. However, always check the lubrication lev­el before startup.

Additional Checks

See Page D−4 and perform all recommended pre­ventive maintenance checks applicable to your
particular unit.

Consult the manual accompanying the engine and
perform any and all routine checks recommended
by the engine manufacturer.

OPERATIONPAGE C − 4

PA SERIES

OM−06301

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 rotat­ing parts. If the pump will be idle for more than a

few hours, or if it has been pumping liquids con­taining 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 pre­venting 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 − 5

PA SERIES

OM−06301

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. Turn the keyswitch to ‘OFF’, and
disconnect 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 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 equipped with an automat­ic starting system, and is subject to au­tomatic restart. Keep hands and cloth­ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per­forming any maintenance. Failure to do
so may result in serious personal injury.

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

PUMP FAILS TO
PRIME

PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE

Discharge check valve contami­nated, 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 bro­ken.

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

OM−06301

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 neces­sary.

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. Re­duce 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 or jack shaft bearing(s) frozen. Disassemble, check and replace

bearing(s) as required..

Discharge flow too slow.

Suction check valve or foot valve
clogged or binding.

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 in­crease flow rate, and run engine at
maximum governed speed.

Clean valve.

Dilute if possible.

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.Pump or drive not securely mounted.

Clean out debris; replace damaged
parts.

TROUBLESHOOTINGPAGE D − 2

PA SERIES

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

OM−06301

BEARINGS RUN
TOO HOT

Bearing temperature is high, but
within limits.

Low or incorrect lubricant.

Suction and discharge lines not prop­erly supported.

Excessive tension on drive belt.

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 pre­ventive maintenance schedule will help assure
trouble-free performance and long life from your
Gorman-Rupp pump. For specific questions con­cerning your application, contact your Gorman­Rupp 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 regu­larly to monitor any increase.

Check for proper type and level of
lubricant.

Check piping installation for proper
support.

Align drive properly.Drive misaligned.

Check belt tension. Adjust as
required.

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.

For new applications, a first inspection of wearing
parts at 250 hours will give insight into the wear rate
for your particular application. Subsequent inspec­tions should be performed at the intervals shown
on the chart below. Critical applications should be
inspected more frequently.

TROUBLESHOOTING PAGE D − 3

OM−06301

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

PA SERIES

OM−06301

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 PA4A60−4024T−ESP

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.

Contact the Gorman-Rupp Company to verify per­formance 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 per­formance range shown on the curve.

OM−06301 PA SERIES

PARTS PAGE

SECTION DRAWING

Figure 1. Pump Model PA4A60−4024T−ESP

MAINTENANCE & REPAIRPAGE E − 2

PA SERIES

ITEM

PART NAME PART

NO.

Pump Model PA4A60−4024T−ESP

PARTS LIST

(From S/N 1446296 Up)

NUMBER

MAT’L
CODE

QTY ITEM

NO.

PART NAME PART

NUMBER

OM−06301

MAT’L
CODE

QTY

1 PUMP END ASSY 46133−683 −−− 1
2 J.D. 4024T ENGINE 29224−404 −−− 1
3 HEX HD CAPSCREW B0605 15991 10
4 FLAT WASHER K06 15991 10
5 MOUNTING BRACKET 34518−042 13000 1
6 CONTROL PANEL 29284−047 −−− 1
7 BRACKET 34184−007 15120 1
8 HOISTING BAIL ASSY 44715−038 24150 1

9 AIR INTAKE PIPE 31417−065 15000 2
10 T-BOLT CLAMP 26518−164 −−− 3
11 AIR INTAKE ELBOW 29284−033 −−− 1
12 EXHAUST BLANKET 29334−297 −−− 1
13 FLEX EXH PIPE ASSY 46241−013 −−− 1
14 MUFFFLER CLAMP 29334−261 −−− 3
15 MUFFLER MTG BRKT 29334−298 −−− 1
16 MUFFLER 29334−106 −−− 1
17 WEATHER CAP S1710 −−− 1
18 EXHAUST PIPE 31912−039 15000 1
19 HEX HD CAPSCREW B0504 15991 3
20 HEX NUT D05 15991 3
21 LOCK WASHER J05 15991 14
22 FLAT WASHER K05 15991 14
23 LOCK WASHER J06 15991 12
24 MUFFLER MOUNT ASSY 41824−010 24150 1
25 HEX HD CAPSCREW B1006 15991 10
26 FLAT WASHER K10 15991 20
27 LOCK WASHER J10 15991 30
28 HEX NUT D10 15991 34
29 BATTERY BOX ASSY 42432−005 −−− 1
30 BATTERY SEE OPTIONS REF
31 NEG CABLE ASSY 47311−133 −−− 1
32 POS CABLE ASSY 47311−113 −−− 1
33 BASE/FUEL TANK ASSY 41553−012 24150 1
34 CLOSE PIPE NIPPLE T08 15079 1
35 RED PIPE BUSHING AP1208 15079 1
36 STREET ELBOW AGS08 11999 1
37 BALL VALVE 26631−023 −−− 1
38 MALE HOSE END 26525−020 −−− 1
39 HOSE BARB FITTING 26523−447 −−− 1
40 .38 I.D. X 67 IN. LG. HOSE 18513−054 −−− 1
41 HOSE CLAMP 26518−642 −−− 6
42 .50 I.D. X 35 IN. LG. HOSE 18513−056 −−− 1
43 HOSE BARB FITTING 26523−446 −−− 2
44 .50 I.D. X 24 IN. LG. HOSE 18513−056 −−− 1
45 PIPE CAP V08 15079 2
46 PIPE CAP V06 15079 1
47 FUEL PICKUP 29332−146 −−− 2
48 .38 I.D. X 15 IN. LG. HOSE 18513−054 −−− 1
49 HOSE BARB 26523−333 −−− 2
50 HOSE BARB FITTING 26523−386 −−− 2
51 HOSE CLAMP 26518−641 −−− 2
52 .18 I.D. X 9 IN. LG. HOSE 18513−301 −−− 1
53 FUEL GAUGE 29332−131 −−− 1
54 HEX NUT D06 15991 8
55 LOCK WASHER 21171−511 −−− REF
56 HEX HD CAPSCREW 22645−164 −−− REF
57 PIPE PLUG P04 15079 2
58 HEX HD CAPSCREW B1010 15991 6
59 PIPE ASSEMBLY 46353−205 −−− 2
60 HEX HD CAPSCREW B1011 15991 14
61 WASHER 21161−442 −−− 4
62 PUMP SUPPORT ASSY 41581−035 24150 1
63 HEX HD CAPSCREW B1007 15991 4

INDICATES PARTS RECOMMENDED FOR STOCK

 CONSULT FACTORY FOR INDIVIDUAL PARTS

64 GASKET 25113−034 −−− 2
65 SPOOL SUPPORT BRKT 34742−023 15080 1
66 LOCK WASHER J08 15991 1
67 HEX HD CAPSCREW B0806 15991 1
68 HEX NUT D04 15991 2
69 LOCK WASHER J04 15991 4
70 BRACKET 33251−010 15120 1
71 HEX HD CAPSCREW B0403 15991 1
72  ENCLOSURE ASSY 42164−029 −−− 1
73  FOAM PACKAGE 46823−148 −−− REF
74 THREADED INSERT 21769−159 −−− 12
75 HEX HD CAPSCREW B0503 15991 12
76 SOCKET CONNECTOR 27263−001 −−− 1
77 16/4 X 80 IN. LG. CABLE 18141−147 −−− 1
78 PLUG CONNECTOR 27261−301 −−− 1
79 HEX HD CAPSCREW B0404 15991 2
80 FLAT WASHER K04 15991 2
81 FLOOR MAT 33645−030 19460 1
82 HOSE ASSY 46341−425 −−− 1
83 .50 I.D. x 43 IN. LG. HOSE 18513−113 −−− 1
84 BRACKET ASSY 41888−089 24150 1
85 STREET ELBOW RS08 11999 1
86 PIPE TEE U08 11999 1
87 CONNECTOR 26351−065 −−− 1
88 PRESS RELIEF VALVE 26662−028 −−− 1
89 PIPE UNION AH08 11999 1
90 REDUCER PIPE BUSHING AP0804 15079 1
91 VENTURI 26817−003 −−− 1
92 PIPE COUPLING AE08 15079 1
93 CHECK VALVE 26641−092 −−− 1
94 HEX ADAPTOR 26525−282 −−− 1
95 HEX HD CAPSCREW BW#10−02 17000 1
96 LOCK WASHER J#10 15991 1
97 HEX NUT D#10 15991 1
98 MALE ELBOW 26351−131 −−− 1

99 HOSE BARB FITTING 26523−015 −−− 2
100 .38 I.D. x 15 IN. LG HOSE 18513−054 −−− 1
101 HEX HD CAPSCREW B0615 15991 1

NOT SHOWN:

SUCTION STICKER 6588AG −−− 1
CAUTION STICKER 2613FJ −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−− 1
START-UP TAG 38816−269 −−− 1
WARNING DECAL 38816−345 −−− 2
LEVEL CONTROL LABEL 38816−332 −−− 1
OIIL DRAIN LABEL 38816−323 −−− 1
RADIATOR DRAIN LABEL 38816−322 −−− 1
PUMP DRAIN LABEL 38816−320 −−− 1
WARNING DECAL 38816−203 −−− 2
INSTRUCTION TAG 38818−144 −−− 1
PRIME AIRE DECAL 38812−078 −−− 2
SILENT PUMP DECAL 48154−814 −−− 1
FLOAT SWITCH KIT 48312−980 −−− 1
CABLE TIE 27111−218 −−− 2
CABLE TIE MTG BLOCK 27111−352 −−− 2
WARNING DECAL 2613FE −−− 3
OIL FILL DECAL 38816−194 −−− 1
CAUTION DECAL 38816−140 −−− 1
267 IN. LG. FOAM TAPE 18668−003 −−− 1

OPTIONAL:

DRY CHARGE BATTERY 29331−517 −−− 1
WET CHARGE BATTERY 29331−527 −−− 1

MAINTENANCE & REPAIR PAGE E − 3

OM−06301 PA SERIES

SECTION DRAWING

Figure 2. Pump Model PA4A60−4024T−ESP

MAINTENANCE & REPAIRPAGE E − 4

PA SERIES

ITEM

PART NAME PART

NO.

Pump Model PA4A60−4024T−ESP

PARTS LIST

(From S/N 1446296 Up)

NUMBER

MAT’L
CODE

QTY ITEM

NO.

PART NAME PART

NUMBER

OM−06301

MAT’L
CODE

QTY

1 PUMP END ASSY 46133−683 −−− 1
2 J.D. 4024T ENGINE 29224−404 −−− 1
3 HEX HD CAPSCREW B0605 15991 10
4 FLAT WASHER K06 15991 10
5 MOUNTING BRACKET 34518−042 13000 1
6 CONTROL PANEL 29284−047 −−− 1
7 BRACKET 34184−007 15120 1
8 HOISTING BAIL ASSY 44715−038 24150 1

9 AIR INTAKE PIPE 31417−065 15000 2
10 T-BOLT CLAMP 26518−164 −−− 3
11 AIR INTAKE ELBOW 29284−033 −−− 1
12 EXHAUST BLANKET 29334−297 −−− 1
13 FLEX EXH PIPE ASSY 46241−013 −−− 1
14 MUFFFLER CLAMP 29334−261 −−− 3
15 MUFFLER MTG BRKT 29334−298 −−− 1
16 MUFFLER 29334−106 −−− 1
17 WEATHER CAP S1710 −−− 1
18 EXHAUST PIPE 31912−039 15000 1
19 HEX HD CAPSCREW B0504 15991 3
20 HEX NUT D05 15991 3
21 LOCK WASHER J05 15991 14
22 FLAT WASHER K05 15991 14
23 LOCK WASHER J06 15991 12
24 MUFFLER MOUNT ASSY 41824−010 24150 1
25 HEX HD CAPSCREW B1006 15991 10
26 FLAT WASHER K10 15991 20
27 LOCK WASHER J10 15991 30
28 HEX NUT D10 15991 34
29 BATTERY BOX ASSY 42432−005 −−− 1
30 BATTERY SEE OPTIONS REF
31 NEG CABLE ASSY 47311−133 −−− 1
32 POS CABLE ASSY 47311−113 −−− 1
33 BASE/FUEL TANK ASSY 41553−012 24150 1
34 CLOSE PIPE NIPPLE T08 15079 1
35 RED PIPE BUSHING AP1208 15079 1
36 STREET ELBOW AGS08 11999 1
37 BALL VALVE 26631−023 −−− 1
38 MALE HOSE END 26525−020 −−− 1
39 HOSE BARB FITTING 26523−447 −−− 1
40 .38 I.D. X 67 IN. LG. HOSE 18513−054 −−− 1
41 HOSE CLAMP 26518−642 −−− 6
42 .50 I.D. X 35 IN. LG. HOSE 18513−056 −−− 1
43 HOSE BARB FITTING 26523−446 −−− 2
44 .50 I.D. X 24 IN. LG. HOSE 18513−056 −−− 1
45 PIPE CAP V08 15079 2
46 PIPE CAP V06 15079 1
47 FUEL PICKUP 29332−146 −−− 2
48 .38 I.D. X 15 IN. LG. HOSE 18513−054 −−− 1
49 HOSE BARB 26523−333 −−− 2
50 HOSE BARB FITTING 26523−386 −−− 2
51 HOSE CLAMP 26518−641 −−− 2
52 .18 I.D. X 9 IN. LG. HOSE 18513−301 −−− 1
53 FUEL GAUGE 29332−131 −−− 1
54 HEX NUT D06 15991 8
55 LOCK WASHER 21171−511 −−− REF
56 HEX HD CAPSCREW 22645−164 −−− REF
57 PIPE PLUG P04 15079 2
58 HEX HD CAPSCREW B1010 15991 6
59 PIPE ASSEMBLY 46353−205 −−− 2
60 HEX HD CAPSCREW B1011 15991 14
61 WASHER 21161−442 −−− 4
62 PUMP SUPPORT ASSY 41581−035 24150 1
63 HEX HD CAPSCREW B1007 15991 4

INDICATES PARTS RECOMMENDED FOR STOCK

 CONSULT FACTORY FOR INDIVIDUAL PARTS

64 GASKET 25113−034 −−− 2
65 SPOOL SUPPORT BRKT 34742−023 15080 1
66 LOCK WASHER J08 15991 1
67 HEX HD CAPSCREW B0806 15991 1
68 HEX NUT D04 15991 2
69 LOCK WASHER J04 15991 4
70 BRACKET 33251−010 15120 1
71 HEX HD CAPSCREW B0403 15991 1
72  ENCLOSURE ASSY 42164−029 −−− 1
73  FOAM PACKAGE 46823−148 −−− REF
74 THREADED INSERT 21769−159 −−− 12
75 HEX HD CAPSCREW B0503 15991 12
76 SOCKET CONNECTOR 27263−001 −−− 1
77 16/4 X 80 IN. LG. CABLE 18141−147 −−− 1
78 PLUG CONNECTOR 27261−301 −−− 1
79 HEX HD CAPSCREW B0404 15991 2
80 FLAT WASHER K04 15991 2
81 FLOOR MAT 33645−030 19460 1
82 HOSE ASSY 46341−425 −−− 1
83 .50 I.D. x 43 IN. LG. HOSE 18513−113 −−− 1
84 BRACKET ASSY 41888−089 24150 1
85 STREET ELBOW RS08 11999 1
86 PIPE TEE U08 11999 1
87 CONNECTOR 26351−065 −−− 1
88 PRESS RELIEF VALVE 26662−028 −−− 1
89 PIPE UNION AH08 11999 1
90 REDUCER PIPE BUSHING AP0804 15079 1
91 VENTURI 26817−003 −−− 1
92 PIPE COUPLING AE08 15079 1
93 CHECK VALVE 26641−092 −−− 1
94 HEX ADAPTOR 26525−282 −−− 1
95 HEX HD CAPSCREW BW#10−02 17000 1
96 LOCK WASHER J#10 15991 1
97 HEX NUT D#10 15991 1
98 MALE ELBOW 26351−131 −−− 1

99 HOSE BARB FITTING 26523−015 −−− 2
100 .38 I.D. x 15 IN. LG HOSE 18513−054 −−− 1
101 HEX HD CAPSCREW B0615 15991 1

NOT SHOWN:

SUCTION STICKER 6588AG −−− 1
CAUTION STICKER 2613FJ −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−− 1
START-UP TAG 38816−269 −−− 1
WARNING DECAL 38816−345 −−− 2
LEVEL CONTROL LABEL 38816−332 −−− 1
OIIL DRAIN LABEL 38816−323 −−− 1
RADIATOR DRAIN LABEL 38816−322 −−− 1
PUMP DRAIN LABEL 38816−320 −−− 1
WARNING DECAL 38816−203 −−− 2
INSTRUCTION TAG 38818−144 −−− 1
PRIME AIRE DECAL 38812−078 −−− 2
SILENT PUMP DECAL 48154−814 −−− 1
FLOAT SWITCH KIT 48312−980 −−− 1
CABLE TIE 27111−218 −−− 2
CABLE TIE MTG BLOCK 27111−352 −−− 2
WARNING DECAL 2613FE −−− 3
OIL FILL DECAL 38816−194 −−− 1
CAUTION DECAL 38816−140 −−− 1
267 IN. LG. FOAM TAPE 18668−003 −−− 1

OPTIONAL:

DRY CHARGE BATTERY 29331−517 −−− 1
WET CHARGE BATTERY 29331−527 −−− 1

MAINTENANCE & REPAIR PAGE E − 5

OM−06301 PA SERIES

SECTION DRAWING

Figure 3. Pump Model PA4A60−4024T−ESP

MAINTENANCE & REPAIRPAGE E − 6

PA SERIES

ITEM

PART NAME PART

NO.

Pump Model PA4A60−4024T−ESP

PARTS LIST

(From S/N 1446296 Up)

NUMBER

MAT’L
CODE

QTY ITEM

NO.

PART NAME PART

NUMBER

OM−06301

MAT’L
CODE

QTY

1 PUMP END ASSY 46133−683 −−− 1
2 J.D. 4024T ENGINE 29224−404 −−− 1
3 HEX HD CAPSCREW B0605 15991 10
4 FLAT WASHER K06 15991 10
5 MOUNTING BRACKET 34518−042 13000 1
6 CONTROL PANEL 29284−047 −−− 1
7 BRACKET 34184−007 15120 1
8 HOISTING BAIL ASSY 44715−038 24150 1

9 AIR INTAKE PIPE 31417−065 15000 2
10 T-BOLT CLAMP 26518−164 −−− 3
11 AIR INTAKE ELBOW 29284−033 −−− 1
12 EXHAUST BLANKET 29334−297 −−− 1
13 FLEX EXH PIPE ASSY 46241−013 −−− 1
14 MUFFFLER CLAMP 29334−261 −−− 3
15 MUFFLER MTG BRKT 29334−298 −−− 1
16 MUFFLER 29334−106 −−− 1
17 WEATHER CAP S1710 −−− 1
18 EXHAUST PIPE 31912−039 15000 1
19 HEX HD CAPSCREW B0504 15991 3
20 HEX NUT D05 15991 3
21 LOCK WASHER J05 15991 14
22 FLAT WASHER K05 15991 14
23 LOCK WASHER J06 15991 12
24 MUFFLER MOUNT ASSY 41824−010 24150 1
25 HEX HD CAPSCREW B1006 15991 10
26 FLAT WASHER K10 15991 20
27 LOCK WASHER J10 15991 30
28 HEX NUT D10 15991 34
29 BATTERY BOX ASSY 42432−005 −−− 1
30 BATTERY SEE OPTIONS REF
31 NEG CABLE ASSY 47311−133 −−− 1
32 POS CABLE ASSY 47311−113 −−− 1
33 BASE/FUEL TANK ASSY 41553−012 24150 1
34 CLOSE PIPE NIPPLE T08 15079 1
35 RED PIPE BUSHING AP1208 15079 1
36 STREET ELBOW AGS08 11999 1
37 BALL VALVE 26631−023 −−− 1
38 MALE HOSE END 26525−020 −−− 1
39 HOSE BARB FITTING 26523−447 −−− 1
40 .38 I.D. X 67 IN. LG. HOSE 18513−054 −−− 1
41 HOSE CLAMP 26518−642 −−− 6
42 .50 I.D. X 35 IN. LG. HOSE 18513−056 −−− 1
43 HOSE BARB FITTING 26523−446 −−− 2
44 .50 I.D. X 24 IN. LG. HOSE 18513−056 −−− 1
45 PIPE CAP V08 15079 2
46 PIPE CAP V06 15079 1
47 FUEL PICKUP 29332−146 −−− 2
48 .38 I.D. X 15 IN. LG. HOSE 18513−054 −−− 1
49 HOSE BARB 26523−333 −−− 2
50 HOSE BARB FITTING 26523−386 −−− 2
51 HOSE CLAMP 26518−641 −−− 2
52 .18 I.D. X 9 IN. LG. HOSE 18513−301 −−− 1
53 FUEL GAUGE 29332−131 −−− 1
54 HEX NUT D06 15991 8
55 LOCK WASHER 21171−511 −−− REF
56 HEX HD CAPSCREW 22645−164 −−− REF
57 PIPE PLUG P04 15079 2
58 HEX HD CAPSCREW B1010 15991 6
59 PIPE ASSEMBLY 46353−205 −−− 2
60 HEX HD CAPSCREW B1011 15991 14
61 WASHER 21161−442 −−− 4
62 PUMP SUPPORT ASSY 41581−035 24150 1
63 HEX HD CAPSCREW B1007 15991 4

INDICATES PARTS RECOMMENDED FOR STOCK

 CONSULT FACTORY FOR INDIVIDUAL PARTS

64 GASKET 25113−034 −−− 2
65 SPOOL SUPPORT BRKT 34742−023 15080 1
66 LOCK WASHER J08 15991 1
67 HEX HD CAPSCREW B0806 15991 1
68 HEX NUT D04 15991 2
69 LOCK WASHER J04 15991 4
70 BRACKET 33251−010 15120 1
71 HEX HD CAPSCREW B0403 15991 1
72  ENCLOSURE ASSY 42164−029 −−− 1
73  FOAM PACKAGE 46823−148 −−− REF
74 THREADED INSERT 21769−159 −−− 12
75 HEX HD CAPSCREW B0503 15991 12
76 SOCKET CONNECTOR 27263−001 −−− 1
77 16/4 X 80 IN. LG. CABLE 18141−147 −−− 1
78 PLUG CONNECTOR 27261−301 −−− 1
79 HEX HD CAPSCREW B0404 15991 2
80 FLAT WASHER K04 15991 2
81 FLOOR MAT 33645−030 19460 1
82 HOSE ASSY 46341−425 −−− 1
83 .50 I.D. x 43 IN. LG. HOSE 18513−113 −−− 1
84 BRACKET ASSY 41888−089 24150 1
85 STREET ELBOW RS08 11999 1
86 PIPE TEE U08 11999 1
87 CONNECTOR 26351−065 −−− 1
88 PRESS RELIEF VALVE 26662−028 −−− 1
89 PIPE UNION AH08 11999 1
90 REDUCER PIPE BUSHING AP0804 15079 1
91 VENTURI 26817−003 −−− 1
92 PIPE COUPLING AE08 15079 1
93 CHECK VALVE 26641−092 −−− 1
94 HEX ADAPTOR 26525−282 −−− 1
95 HEX HD CAPSCREW BW#10−02 17000 1
96 LOCK WASHER J#10 15991 1
97 HEX NUT D#10 15991 1
98 MALE ELBOW 26351−131 −−− 1

99 HOSE BARB FITTING 26523−015 −−− 2
100 .38 I.D. x 15 IN. LG HOSE 18513−054 −−− 1
101 HEX HD CAPSCREW B0615 15991 1

NOT SHOWN:

SUCTION STICKER 6588AG −−− 1
CAUTION STICKER 2613FJ −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−− 1
START-UP TAG 38816−269 −−− 1
WARNING DECAL 38816−345 −−− 2
LEVEL CONTROL LABEL 38816−332 −−− 1
OIIL DRAIN LABEL 38816−323 −−− 1
RADIATOR DRAIN LABEL 38816−322 −−− 1
PUMP DRAIN LABEL 38816−320 −−− 1
WARNING DECAL 38816−203 −−− 2
INSTRUCTION TAG 38818−144 −−− 1
PRIME AIRE DECAL 38812−078 −−− 2
SILENT PUMP DECAL 48154−814 −−− 1
FLOAT SWITCH KIT 48312−980 −−− 1
CABLE TIE 27111−218 −−− 2
CABLE TIE MTG BLOCK 27111−352 −−− 2
WARNING DECAL 2613FE −−− 3
OIL FILL DECAL 38816−194 −−− 1
CAUTION DECAL 38816−140 −−− 1
267 IN. LG. FOAM TAPE 18668−003 −−− 1

OPTIONAL:

DRY CHARGE BATTERY 29331−517 −−− 1
WET CHARGE BATTERY 29331−527 −−− 1

MAINTENANCE & REPAIR PAGE E − 7

OM−06301 PA SERIES

SECTION DRAWING

Figure 4. Pump Model PA4A60−4024T−ESP

MAINTENANCE & REPAIRPAGE E − 8

PA SERIES

ITEM

PART NAME PART

NO.

Pump Model PA4A60−4024T−ESP

PARTS LIST

(From S/N 1446296 Up)

NUMBER

MAT’L
CODE

QTY ITEM

NO.

PART NAME PART

NUMBER

OM−06301

MAT’L
CODE

QTY

1 PUMP END ASSY 46133−683 −−− 1
2 J.D. 4024T ENGINE 29224−404 −−− 1
3 HEX HD CAPSCREW B0605 15991 10
4 FLAT WASHER K06 15991 10
5 MOUNTING BRACKET 34518−042 13000 1
6 CONTROL PANEL 29284−047 −−− 1
7 BRACKET 34184−007 15120 1
8 HOISTING BAIL ASSY 44715−038 24150 1

9 AIR INTAKE PIPE 31417−065 15000 2
10 T-BOLT CLAMP 26518−164 −−− 3
11 AIR INTAKE ELBOW 29284−033 −−− 1
12 EXHAUST BLANKET 29334−297 −−− 1
13 FLEX EXH PIPE ASSY 46241−013 −−− 1
14 MUFFFLER CLAMP 29334−261 −−− 3
15 MUFFLER MTG BRKT 29334−298 −−− 1
16 MUFFLER 29334−106 −−− 1
17 WEATHER CAP S1710 −−− 1
18 EXHAUST PIPE 31912−039 15000 1
19 HEX HD CAPSCREW B0504 15991 3
20 HEX NUT D05 15991 3
21 LOCK WASHER J05 15991 14
22 FLAT WASHER K05 15991 14
23 LOCK WASHER J06 15991 12
24 MUFFLER MOUNT ASSY 41824−010 24150 1
25 HEX HD CAPSCREW B1006 15991 10
26 FLAT WASHER K10 15991 20
27 LOCK WASHER J10 15991 30
28 HEX NUT D10 15991 34
29 BATTERY BOX ASSY 42432−005 −−− 1
30 BATTERY SEE OPTIONS REF
31 NEG CABLE ASSY 47311−133 −−− 1
32 POS CABLE ASSY 47311−113 −−− 1
33 BASE/FUEL TANK ASSY 41553−012 24150 1
34 CLOSE PIPE NIPPLE T08 15079 1
35 RED PIPE BUSHING AP1208 15079 1
36 STREET ELBOW AGS08 11999 1
37 BALL VALVE 26631−023 −−− 1
38 MALE HOSE END 26525−020 −−− 1
39 HOSE BARB FITTING 26523−447 −−− 1
40 .38 I.D. X 67 IN. LG. HOSE 18513−054 −−− 1
41 HOSE CLAMP 26518−642 −−− 6
42 .50 I.D. X 35 IN. LG. HOSE 18513−056 −−− 1
43 HOSE BARB FITTING 26523−446 −−− 2
44 .50 I.D. X 24 IN. LG. HOSE 18513−056 −−− 1
45 PIPE CAP V08 15079 2
46 PIPE CAP V06 15079 1
47 FUEL PICKUP 29332−146 −−− 2
48 .38 I.D. X 15 IN. LG. HOSE 18513−054 −−− 1
49 HOSE BARB 26523−333 −−− 2
50 HOSE BARB FITTING 26523−386 −−− 2
51 HOSE CLAMP 26518−641 −−− 2
52 .18 I.D. X 9 IN. LG. HOSE 18513−301 −−− 1
53 FUEL GAUGE 29332−131 −−− 1
54 HEX NUT D06 15991 8
55 LOCK WASHER 21171−511 −−− REF
56 HEX HD CAPSCREW 22645−164 −−− REF
57 PIPE PLUG P04 15079 2
58 HEX HD CAPSCREW B1010 15991 6
59 PIPE ASSEMBLY 46353−205 −−− 2
60 HEX HD CAPSCREW B1011 15991 14
61 WASHER 21161−442 −−− 4
62 PUMP SUPPORT ASSY 41581−035 24150 1
63 HEX HD CAPSCREW B1007 15991 4

INDICATES PARTS RECOMMENDED FOR STOCK

 CONSULT FACTORY FOR INDIVIDUAL PARTS

64 GASKET 25113−034 −−− 2
65 SPOOL SUPPORT BRKT 34742−023 15080 1
66 LOCK WASHER J08 15991 1
67 HEX HD CAPSCREW B0806 15991 1
68 HEX NUT D04 15991 2
69 LOCK WASHER J04 15991 4
70 BRACKET 33251−010 15120 1
71 HEX HD CAPSCREW B0403 15991 1
72  ENCLOSURE ASSY 42164−029 −−− 1
73  FOAM PACKAGE 46823−148 −−− REF
74 THREADED INSERT 21769−159 −−− 12
75 HEX HD CAPSCREW B0503 15991 12
76 SOCKET CONNECTOR 27263−001 −−− 1
77 16/4 X 80 IN. LG. CABLE 18141−147 −−− 1
78 PLUG CONNECTOR 27261−301 −−− 1
79 HEX HD CAPSCREW B0404 15991 2
80 FLAT WASHER K04 15991 2
81 FLOOR MAT 33645−030 19460 1
82 HOSE ASSY 46341−425 −−− 1
83 .50 I.D. x 43 IN. LG. HOSE 18513−113 −−− 1
84 BRACKET ASSY 41888−089 24150 1
85 STREET ELBOW RS08 11999 1
86 PIPE TEE U08 11999 1
87 CONNECTOR 26351−065 −−− 1
88 PRESS RELIEF VALVE 26662−028 −−− 1
89 PIPE UNION AH08 11999 1
90 REDUCER PIPE BUSHING AP0804 15079 1
91 VENTURI 26817−003 −−− 1
92 PIPE COUPLING AE08 15079 1
93 CHECK VALVE 26641−092 −−− 1
94 HEX ADAPTOR 26525−282 −−− 1
95 HEX HD CAPSCREW BW#10−02 17000 1
96 LOCK WASHER J#10 15991 1
97 HEX NUT D#10 15991 1
98 MALE ELBOW 26351−131 −−− 1

99 HOSE BARB FITTING 26523−015 −−− 2
100 .38 I.D. x 15 IN. LG HOSE 18513−054 −−− 1
101 HEX HD CAPSCREW B0615 15991 1

NOT SHOWN:

SUCTION STICKER 6588AG −−− 1
CAUTION STICKER 2613FJ −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−− 1
START-UP TAG 38816−269 −−− 1
WARNING DECAL 38816−345 −−− 2
LEVEL CONTROL LABEL 38816−332 −−− 1
OIIL DRAIN LABEL 38816−323 −−− 1
RADIATOR DRAIN LABEL 38816−322 −−− 1
PUMP DRAIN LABEL 38816−320 −−− 1
WARNING DECAL 38816−203 −−− 2
INSTRUCTION TAG 38818−144 −−− 1
PRIME AIRE DECAL 38812−078 −−− 2
SILENT PUMP DECAL 48154−814 −−− 1
FLOAT SWITCH KIT 48312−980 −−− 1
CABLE TIE 27111−218 −−− 2
CABLE TIE MTG BLOCK 27111−352 −−− 2
WARNING DECAL 2613FE −−− 3
OIL FILL DECAL 38816−194 −−− 1
CAUTION DECAL 38816−140 −−− 1
267 IN. LG. FOAM TAPE 18668−003 −−− 1

OPTIONAL:

DRY CHARGE BATTERY 29331−517 −−− 1
WET CHARGE BATTERY 29331−527 −−− 1

MAINTENANCE & REPAIR PAGE E − 9

OM−06301 PA SERIES

SECTION DRAWING

Figure 5. Pump Model PA4A60−4024T−ESP

MAINTENANCE & REPAIRPAGE E − 10

PA SERIES

ITEM

PART NAME PART

NO.

Pump Model PA4A60−4024T−ESP

PARTS LIST

(From S/N 1446296 Up)

NUMBER

MAT’L
CODE

QTY ITEM

NO.

PART NAME PART

NUMBER

OM−06301

MAT’L
CODE

QTY

1 PUMP END ASSY 46133−683 −−− 1
2 J.D. 4024T ENGINE 29224−404 −−− 1
3 HEX HD CAPSCREW B0605 15991 10
4 FLAT WASHER K06 15991 10
5 MOUNTING BRACKET 34518−042 13000 1
6 CONTROL PANEL 29284−047 −−− 1
7 BRACKET 34184−007 15120 1
8 HOISTING BAIL ASSY 44715−038 24150 1

9 AIR INTAKE PIPE 31417−065 15000 2
10 T-BOLT CLAMP 26518−164 −−− 3
11 AIR INTAKE ELBOW 29284−033 −−− 1
12 EXHAUST BLANKET 29334−297 −−− 1
13 FLEX EXH PIPE ASSY 46241−013 −−− 1
14 MUFFFLER CLAMP 29334−261 −−− 3
15 MUFFLER MTG BRKT 29334−298 −−− 1
16 MUFFLER 29334−106 −−− 1
17 WEATHER CAP S1710 −−− 1
18 EXHAUST PIPE 31912−039 15000 1
19 HEX HD CAPSCREW B0504 15991 3
20 HEX NUT D05 15991 3
21 LOCK WASHER J05 15991 14
22 FLAT WASHER K05 15991 14
23 LOCK WASHER J06 15991 12
24 MUFFLER MOUNT ASSY 41824−010 24150 1
25 HEX HD CAPSCREW B1006 15991 10
26 FLAT WASHER K10 15991 20
27 LOCK WASHER J10 15991 30
28 HEX NUT D10 15991 34
29 BATTERY BOX ASSY 42432−005 −−− 1
30 BATTERY SEE OPTIONS REF
31 NEG CABLE ASSY 47311−133 −−− 1
32 POS CABLE ASSY 47311−113 −−− 1
33 BASE/FUEL TANK ASSY 41553−012 24150 1
34 CLOSE PIPE NIPPLE T08 15079 1
35 RED PIPE BUSHING AP1208 15079 1
36 STREET ELBOW AGS08 11999 1
37 BALL VALVE 26631−023 −−− 1
38 MALE HOSE END 26525−020 −−− 1
39 HOSE BARB FITTING 26523−447 −−− 1
40 .38 I.D. X 67 IN. LG. HOSE 18513−054 −−− 1
41 HOSE CLAMP 26518−642 −−− 6
42 .50 I.D. X 35 IN. LG. HOSE 18513−056 −−− 1
43 HOSE BARB FITTING 26523−446 −−− 2
44 .50 I.D. X 24 IN. LG. HOSE 18513−056 −−− 1
45 PIPE CAP V08 15079 2
46 PIPE CAP V06 15079 1
47 FUEL PICKUP 29332−146 −−− 2
48 .38 I.D. X 15 IN. LG. HOSE 18513−054 −−− 1
49 HOSE BARB 26523−333 −−− 2
50 HOSE BARB FITTING 26523−386 −−− 2
51 HOSE CLAMP 26518−641 −−− 2
52 .18 I.D. X 9 IN. LG. HOSE 18513−301 −−− 1
53 FUEL GAUGE 29332−131 −−− 1
54 HEX NUT D06 15991 8
55 LOCK WASHER 21171−511 −−− REF
56 HEX HD CAPSCREW 22645−164 −−− REF
57 PIPE PLUG P04 15079 2
58 HEX HD CAPSCREW B1010 15991 6
59 PIPE ASSEMBLY 46353−205 −−− 2
60 HEX HD CAPSCREW B1011 15991 14
61 WASHER 21161−442 −−− 4
62 PUMP SUPPORT ASSY 41581−035 24150 1
63 HEX HD CAPSCREW B1007 15991 4

INDICATES PARTS RECOMMENDED FOR STOCK

 CONSULT FACTORY FOR INDIVIDUAL PARTS

64 GASKET 25113−034 −−− 2
65 SPOOL SUPPORT BRKT 34742−023 15080 1
66 LOCK WASHER J08 15991 1
67 HEX HD CAPSCREW B0806 15991 1
68 HEX NUT D04 15991 2
69 LOCK WASHER J04 15991 4
70 BRACKET 33251−010 15120 1
71 HEX HD CAPSCREW B0403 15991 1
72  ENCLOSURE ASSY 42164−029 −−− 1
73  FOAM PACKAGE 46823−148 −−− REF
74 THREADED INSERT 21769−159 −−− 12
75 HEX HD CAPSCREW B0503 15991 12
76 SOCKET CONNECTOR 27263−001 −−− 1
77 16/4 X 80 IN. LG. CABLE 18141−147 −−− 1
78 PLUG CONNECTOR 27261−301 −−− 1
79 HEX HD CAPSCREW B0404 15991 2
80 FLAT WASHER K04 15991 2
81 FLOOR MAT 33645−030 19460 1
82 HOSE ASSY 46341−425 −−− 1
83 .50 I.D. x 43 IN. LG. HOSE 18513−113 −−− 1
84 BRACKET ASSY 41888−089 24150 1
85 STREET ELBOW RS08 11999 1
86 PIPE TEE U08 11999 1
87 CONNECTOR 26351−065 −−− 1
88 PRESS RELIEF VALVE 26662−028 −−− 1
89 PIPE UNION AH08 11999 1
90 REDUCER PIPE BUSHING AP0804 15079 1
91 VENTURI 26817−003 −−− 1
92 PIPE COUPLING AE08 15079 1
93 CHECK VALVE 26641−092 −−− 1
94 HEX ADAPTOR 26525−282 −−− 1
95 HEX HD CAPSCREW BW#10−02 17000 1
96 LOCK WASHER J#10 15991 1
97 HEX NUT D#10 15991 1
98 MALE ELBOW 26351−131 −−− 1

99 HOSE BARB FITTING 26523−015 −−− 2
100 .38 I.D. x 15 IN. LG HOSE 18513−054 −−− 1
101 HEX HD CAPSCREW B0615 15991 1

NOT SHOWN:

SUCTION STICKER 6588AG −−− 1
CAUTION STICKER 2613FJ −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−− 1
START-UP TAG 38816−269 −−− 1
WARNING DECAL 38816−345 −−− 2
LEVEL CONTROL LABEL 38816−332 −−− 1
OIIL DRAIN LABEL 38816−323 −−− 1
RADIATOR DRAIN LABEL 38816−322 −−− 1
PUMP DRAIN LABEL 38816−320 −−− 1
WARNING DECAL 38816−203 −−− 2
INSTRUCTION TAG 38818−144 −−− 1
PRIME AIRE DECAL 38812−078 −−− 2
SILENT PUMP DECAL 48154−814 −−− 1
FLOAT SWITCH KIT 48312−980 −−− 1
CABLE TIE 27111−218 −−− 2
CABLE TIE MTG BLOCK 27111−352 −−− 2
WARNING DECAL 2613FE −−− 3
OIL FILL DECAL 38816−194 −−− 1
CAUTION DECAL 38816−140 −−− 1
267 IN. LG. FOAM TAPE 18668−003 −−− 1

OPTIONAL:

DRY CHARGE BATTERY 29331−517 −−− 1
WET CHARGE BATTERY 29331−527 −−− 1

MAINTENANCE & REPAIR PAGE E − 11

OM−06301 PA SERIES

SECTION DRAWING

Figure 6. Pump Model PA4A60−4024T−ESP

MAINTENANCE & REPAIRPAGE E − 12

PA SERIES

ITEM

PART NAME PART

NO.

Pump Model PA4A60−4024T−ESP

PARTS LIST

(From S/N 1446296 Up)

NUMBER

MAT’L
CODE

QTY ITEM

NO.

PART NAME PART

NUMBER

OM−06301

MAT’L
CODE

QTY

1 PUMP END ASSY 46133−683 −−− 1
2 J.D. 4024T ENGINE 29224−404 −−− 1
3 HEX HD CAPSCREW B0605 15991 10
4 FLAT WASHER K06 15991 10
5 MOUNTING BRACKET 34518−042 13000 1
6 CONTROL PANEL 29284−047 −−− 1
7 BRACKET 34184−007 15120 1
8 HOISTING BAIL ASSY 44715−038 24150 1

9 AIR INTAKE PIPE 31417−065 15000 2
10 T-BOLT CLAMP 26518−164 −−− 3
11 AIR INTAKE ELBOW 29284−033 −−− 1
12 EXHAUST BLANKET 29334−297 −−− 1
13 FLEX EXH PIPE ASSY 46241−013 −−− 1
14 MUFFFLER CLAMP 29334−261 −−− 3
15 MUFFLER MTG BRKT 29334−298 −−− 1
16 MUFFLER 29334−106 −−− 1
17 WEATHER CAP S1710 −−− 1
18 EXHAUST PIPE 31912−039 15000 1
19 HEX HD CAPSCREW B0504 15991 3
20 HEX NUT D05 15991 3
21 LOCK WASHER J05 15991 14
22 FLAT WASHER K05 15991 14
23 LOCK WASHER J06 15991 12
24 MUFFLER MOUNT ASSY 41824−010 24150 1
25 HEX HD CAPSCREW B1006 15991 10
26 FLAT WASHER K10 15991 20
27 LOCK WASHER J10 15991 30
28 HEX NUT D10 15991 34
29 BATTERY BOX ASSY 42432−005 −−− 1
30 BATTERY SEE OPTIONS REF
31 NEG CABLE ASSY 47311−133 −−− 1
32 POS CABLE ASSY 47311−113 −−− 1
33 BASE/FUEL TANK ASSY 41553−012 24150 1
34 CLOSE PIPE NIPPLE T08 15079 1
35 RED PIPE BUSHING AP1208 15079 1
36 STREET ELBOW AGS08 11999 1
37 BALL VALVE 26631−023 −−− 1
38 MALE HOSE END 26525−020 −−− 1
39 HOSE BARB FITTING 26523−447 −−− 1
40 .38 I.D. X 67 IN. LG. HOSE 18513−054 −−− 1
41 HOSE CLAMP 26518−642 −−− 6
42 .50 I.D. X 35 IN. LG. HOSE 18513−056 −−− 1
43 HOSE BARB FITTING 26523−446 −−− 2
44 .50 I.D. X 24 IN. LG. HOSE 18513−056 −−− 1
45 PIPE CAP V08 15079 2
46 PIPE CAP V06 15079 1
47 FUEL PICKUP 29332−146 −−− 2
48 .38 I.D. X 15 IN. LG. HOSE 18513−054 −−− 1
49 HOSE BARB 26523−333 −−− 2
50 HOSE BARB FITTING 26523−386 −−− 2
51 HOSE CLAMP 26518−641 −−− 2
52 .18 I.D. X 9 IN. LG. HOSE 18513−301 −−− 1
53 FUEL GAUGE 29332−131 −−− 1
54 HEX NUT D06 15991 8
55 LOCK WASHER 21171−511 −−− REF
56 HEX HD CAPSCREW 22645−164 −−− REF
57 PIPE PLUG P04 15079 2
58 HEX HD CAPSCREW B1010 15991 6
59 PIPE ASSEMBLY 46353−205 −−− 2
60 HEX HD CAPSCREW B1011 15991 14
61 WASHER 21161−442 −−− 4
62 PUMP SUPPORT ASSY 41581−035 24150 1
63 HEX HD CAPSCREW B1007 15991 4

INDICATES PARTS RECOMMENDED FOR STOCK

 CONSULT FACTORY FOR INDIVIDUAL PARTS

64 GASKET 25113−034 −−− 2
65 SPOOL SUPPORT BRKT 34742−023 15080 1
66 LOCK WASHER J08 15991 1
67 HEX HD CAPSCREW B0806 15991 1
68 HEX NUT D04 15991 2
69 LOCK WASHER J04 15991 4
70 BRACKET 33251−010 15120 1
71 HEX HD CAPSCREW B0403 15991 1
72  ENCLOSURE ASSY 42164−029 −−− 1
73  FOAM PACKAGE 46823−148 −−− REF
74 THREADED INSERT 21769−159 −−− 12
75 HEX HD CAPSCREW B0503 15991 12
76 SOCKET CONNECTOR 27263−001 −−− 1
77 16/4 X 80 IN. LG. CABLE 18141−147 −−− 1
78 PLUG CONNECTOR 27261−301 −−− 1
79 HEX HD CAPSCREW B0404 15991 2
80 FLAT WASHER K04 15991 2
81 FLOOR MAT 33645−030 19460 1
82 HOSE ASSY 46341−425 −−− 1
83 .50 I.D. x 43 IN. LG. HOSE 18513−113 −−− 1
84 BRACKET ASSY 41888−089 24150 1
85 STREET ELBOW RS08 11999 1
86 PIPE TEE U08 11999 1
87 CONNECTOR 26351−065 −−− 1
88 PRESS RELIEF VALVE 26662−028 −−− 1
89 PIPE UNION AH08 11999 1
90 REDUCER PIPE BUSHING AP0804 15079 1
91 VENTURI 26817−003 −−− 1
92 PIPE COUPLING AE08 15079 1
93 CHECK VALVE 26641−092 −−− 1
94 HEX ADAPTOR 26525−282 −−− 1
95 HEX HD CAPSCREW BW#10−02 17000 1
96 LOCK WASHER J#10 15991 1
97 HEX NUT D#10 15991 1
98 MALE ELBOW 26351−131 −−− 1

99 HOSE BARB FITTING 26523−015 −−− 2
100 .38 I.D. x 15 IN. LG HOSE 18513−054 −−− 1
101 HEX HD CAPSCREW B0615 15991 1

NOT SHOWN:

SUCTION STICKER 6588AG −−− 1
CAUTION STICKER 2613FJ −−− 1
INSTRUCTION TAG 38817−085 −−− 1
DISCHARGE STICKER 6588BJ −−− 1
START-UP TAG 38816−269 −−− 1
WARNING DECAL 38816−345 −−− 2
LEVEL CONTROL LABEL 38816−332 −−− 1
OIIL DRAIN LABEL 38816−323 −−− 1
RADIATOR DRAIN LABEL 38816−322 −−− 1
PUMP DRAIN LABEL 38816−320 −−− 1
WARNING DECAL 38816−203 −−− 2
INSTRUCTION TAG 38818−144 −−− 1
PRIME AIRE DECAL 38812−078 −−− 2
SILENT PUMP DECAL 48154−814 −−− 1
FLOAT SWITCH KIT 48312−980 −−− 1
CABLE TIE 27111−218 −−− 2
CABLE TIE MTG BLOCK 27111−352 −−− 2
WARNING DECAL 2613FE −−− 3
OIL FILL DECAL 38816−194 −−− 1
CAUTION DECAL 38816−140 −−− 1
267 IN. LG. FOAM TAPE 18668−003 −−− 1

OPTIONAL:

DRY CHARGE BATTERY 29331−517 −−− 1
WET CHARGE BATTERY 29331−527 −−− 1

MAINTENANCE & REPAIR PAGE E − 13

OM−06301 PA SERIES

SECTION DRAWING

Figure 7. PA4A60−(SAE 4/10) Pump Assembly

MAINTENANCE & REPAIRPAGE E − 14

PA SERIES

OM−06301

PA4A60−(SAE 4/10) Pump Assembly

PARTS LIST

ITEM
NO.

1 PUMP END 64C60−(SAE 4/10) −−− 1
2 GASKET 1676G 18000 1
3 STUD C1011 15991 8
4 HEX NUT D10 15991 8
5 LOCK WASHER J10 15991 8
6 HOPPER SPOOL 38644−802 10000 1
7 CHECK VALVE KIT 48274−003 −−− 1

8 COVER PLATE 38244−021 15080 1

9 GASKET 38689−037 18000 1
10 HEX HD CAPSCREW B0804 15991 2
11 LOCK WASHER J08 15991 2
12 PRIMING CHAMBER KIT 48275−005 −−− 1
13 PIPE PLUG P04 15079 1

NOT SHOWN:

PART NAME

−CHECK VALVE 26642−124 −−− 1

−FLAPPER 26688−005 −−− 1

−COVER O-RING 25152−366 −−− 1

NAME PLATE 38818−127 13000 1
DRIVE SCREW BM#04−03 17000 4
G-R DECAL GR−06 −−− 1
STRAINER 2690C 24000 1

PART
NUMBER

MAT’L
CODE

QTY

INDICATES PARTS RECOMMENDED FOR STOCK

MAINTENANCE & REPAIR PAGE E − 15

OM−06301 PA SERIES

SECTION DRAWING

Figure 8. 64C60−(SAE 4/10) Pump End Assembly

MAINTENANCE & REPAIRPAGE E − 16

PA SERIES

OM−06301

PARTS LIST

64C60−(SAE 4/10) Pump End Assembly

ITEM
NO.

1 PUMP CASING 38218−015 10000 1

2 PIPE PLUG P06 15079 1

3 SEAL PLATE O-RING S1674 −−− 1

4 REPAIR ROTATING ASSY 44163−229 −−− 1

5 HEX HD CAPSCREW B0806 15991 4

6 LOCK WASHER J08 15991 4

7 ROT ADJ SHIM SET 13130 17040 4

8 PIPE PLUG P08 15079 2

9 INTERMEDIATE O-RING 25154−273 −−− 1
10 PIPE PLUG P12 15079 1
11 WEAR PLATE ASSY 10532B 15991 1
12 HEX NUT D06 15991 2
13 LOCK WASHER J06 1591 2
14 SIGHT GAUGE S1471 −−− 1
15 NAME PLATE 38817−127 13000 1
16 DRIVE SCREW BM#04−03 17000 4

NOT SHOWN

PART NAME

OIL LEVEL DECAL 38816−123 −−− 1
SUCTION STICKER 6588AG −−− 1
DISCHARGE STICKER 6588BJ −−− 1
WARNING DECAL 2613FE −−− 1
LUBE DECAL 11421A −−− 1
DRIVE ASSEMBLY 44162−160 −−− 1
INSTRUCTION TAG 38817−085 −−− 1

PART
NUMBER

MAT’L
CODE

QTY

INDICATES PARTS RECOMMENDED FOR STOCK

MAINTENANCE & REPAIR PAGE E − 17

OM−06301 PA SERIES

SECTION DRAWING

SEAL AREA DETAIL

Figure 9. 44163−229 Repair Rotating Assembly

MAINTENANCE & REPAIRPAGE E − 18

PA SERIES

OM−06301

PARTS LIST

44163−229 Repair Rotating Assembly

ITEM
NO.

1 IMPELLER 10528 11010 1

2 CARTRIDGE SEAL ASSY 46513−151 −−− 1

3 IMP ADJ SHIM SET 37J 17090 REF

4 SHAFT SLEEVE O-RING 25154−022 −−− REF

5 SEAL PLATE 38272−234 10010 1

6 SEAL PLATE GASKET 109959G 20000 1

7 HEX HD CAPSCREW B0805−1/2 15991 4

8 LOCK WASHER J08 15991 4

9 PIPE PLUG P12 15079 1
10 INTERMEDIATE GUARD 42381−509 24152 2
11 VENTED PIPE PLUG 4823A 15079 1
12 AIR VENT S1530 −−− 1
13 REDUCER PIPE BUSHING AP0802 15079 1
14 INTERMEDIATE BRACKET 38266−007 10000 1
15 HEX HD CAPSCREW B0605 15991 4
16 LOCK WASHER J06 15991 2
17 OIL SEAL S1352 −−− 2
18 BEARING CAP 38322−215 10010 1
19 SIGHT GAUGE S1471 −−− 1
20 BEARING CAP GASKET 38683−248 18000 1
21 SNAP RING S244 −−− 1
22 BALL BEARING S1040 −−− 1
23 SHAFT KEY N0610 15990 1
24 PIPE PLUG P08 15079 2
25 IMPELLER SHAFT 38514−561 1706H 1
26 BALL BEARING 23276−009 −−− 1
27 SEAL PLATE O-RING 25154−273 −−− 1
28 BEARING HOUSING O-RING S1674 −−− 1
29 BEARING HOUSING ADJ SHIM SET 13130 17040 4
30 SHIPPING PLUG 11495B 15079 2

NOT SHOWN:

PART NAME

INSTRUCTION TAG 6588U −−− 1

PART
NUMBER

MAT’L
CODE

QTY

INDICATES PARTS RECOMMENDED FOR STOCK

MAINTENANCE & REPAIR PAGE E − 19

OM−06301 PA SERIES

SECTION DRAWING

Figure 10. 48275−005 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

MAT’L
CODE

MAINTENANCE & REPAIRPAGE E − 20

QTY

PA SERIES

OM−06301

SECTION DRAWING

Figure 11. 46112−709 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 − 21

PART NAME

−ORIFICE BUTTON 26688−021 −−− 1

PART
NUMBER

MAT’L
CODE

QTY

OM−06301 PA SERIES

SECTION DRAWING

Figure 12. 44162−160 Drive Assembly

ITEM
NO.

1 COUPLING KIT 48112−005 −−− 1

2 −BUSHING 24131−496 −−− 1

3 −COUPLING ASSEMBLY 24391−105 −−− 1

4 LOCK WASHER 21171−536 −−− 8

5  SOCKET HEAD CAPSCREW BD0606−1/2 15991 8

5  SOCKET HEAD CAPSCREW 22644−220 −−− 8

6  HEX HD CAPSCREW B0605 15991 12

6  HEX HD CAPSCREW 22645−164 −−− 12

7  HEX HD CAPSCREW 22645−164 −−− 12

7  LOCK WASHER 21171−511 −−− 12

PART NAME

 USE FOR SAE APPLICATIONS
 USE FOR METRIC APPLICATIONS

PART
NUMBER

MAT’L
CODE

MAINTENANCE & REPAIRPAGE E − 22

QTY

PA 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 illustrations (see Figures 1 through 12) and the
corresponding 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.

Some pump service functions may be performed
without separating the pump end assembly from
the engine. However, the priming chamber and
discharge check valve assembly 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 suc­tion and discharge lines and drain the pump cas­ing by removing the casing drain plug. Clean and
reinstall the drain plug.

OM−06301

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 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 main­tenance 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.

Before attempting to open or service the
pump:

1. Familiarize yourself with this man­ual.

2. Shut down the engine and discon­nect 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 cau­tiously.

7. Drain the pump.

Use only replacement parts provided or
approved by Gorman-Rupp. Use of non-

MAINTENANCE & REPAIR PAGE E − 23

PA SERIESOM−06301

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 10)

Disconnect both the suction piping and the air dis­charge tubing from the priming chamber assembly
(1). Support the priming chamber assembly 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 pump assembly.

(Figure 11)

Remove the hardware (2 and 3) securing the prim­ing valve (1) to the priming chamber (5). Carefully
lift the valve components from the priming cham­ber. Remove the gasket (4) and clean the mating
surfaces.

charge check valve assembly and gasket (not
shown) from the pump assembly (1).

The flapper and cover O-ring are the only service­able 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.

Separating Pump and Drive Assembly From
Engine

(Figure 12)

Support the pump end using a hoist and sling, and
remove the hardware (not shown) securing the
pump casing to the base.

Remove the hardware (6 and 7) securing the inter­mediate (14, Figure 9) to the engine bellhousing.
Remove the intermediate guards (10, Figure 9)
and separate the assemblies by pulling the inter­mediate straight away from the engine.

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 by­pass through the priming chamber after adjusting
the orifice button (see Priming Chamber Reas-
sembly and Installation for adjustment), the but­ton 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 piv­ot pin. This will allow the linkage to be raised high
enough to access the orifice button.

Remove the hex nut and lockwasher securing the
orifice button to the linkage bar and unscrew the
orifice button from the linkage bar.

Discharge Check Valve Removal and
Disassembly

(Figure 7)

As the assemblies separate, the flexible portion of
the coupling assembly (3) will remain on the shaft.
To remove the coupling from the shaft, unscrew the
two allen head setscrews from the bushing (2).
Screw one of the setscrews into the puller hole on
the circumference of the bushing. As the coupling
and bushing separate, remove the bushing, and
slide the coupling off the shaft. Remove the shaft
key (23, Figure 9).

It is not necessary to remove the outer ring of the
coupling from the engine flywheel unless the cou­pling must be replaced. To remove the ring, disen­gage the hardware (4 and 5) securing it to the fly­wheel.

Remove any leveling shims used under the casing
mounting feet. Tie and tag the shims for ease of
reassembly.

Move the pump end to a clean, well equipped shop
area for further disassembly.

Draining Oil From Seal Cavity

Remove the hardware (not shown) securing the
discharge check valve bracket to the base.

Support the discharge check valve assembly (7)
using a sling and a suitable lifting device. Remove
the hardware (not shown) and separate the dis-

(Figure 9)

If any further disassembly is to be performed on the
pump, the seal oil cavity must be drained to pre­vent the oil in the seal cavity from escaping as the
pump casing is removed.

MAINTENANCE & REPAIRPAGE E − 24

PA SERIES

OM−06301

Position a clean container under the seal cavity
drain plug (24A, Figure 9). Remove the plug and
drain the oil from the seal cavity into the container.
For shorter drain time, remove the vented plug (11,
Figure 9). Clean and reinstall the drain plugs and
vent plug. Inspect the oil for water, dirt or a cloudy
condition which could indicate seal failure.

Loosening Impeller

(Figure 9)

With the pump end separated from the engine,
wedge a block of wood between the vanes of the
impeller (1) and the pump casing (1, Figure 8) to
prevent rotation.

Install the shaft key (23) in the shaft keyway. Install
a lathe dog on the drive end of the shaft (25) with
the V" notch positioned over the shaft key.

With the impeller rotation still blocked, see Figure
13 and use a long piece of heavy bar stock to pry
against the arm of the lathe dog in a counterclock­wise direction (when facing the drive end of the
shaft). Use caution not to damage the shaft or key­way. When the impeller breaks loose, remove the
lathe dog, key and wood block.

Pump Casing And Wear Plate Removal

(Figure 8)

Support the pump casing using a suitable hoist
and sling.

Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam­age to equipment. If slings or chains are
used to move the pump or components,
make sure that the load is balanced;
otherwise serious personal injury or
death could result. Suction and dis­charge hoses and piping must be re­moved from the pump before lifting.

NOTE

Drain the oil from the seal cavity before removing
the pump casing. See Draining Oil From Seal Cav-
ity.

Remove the hardware (5 and 6) securing the pump
casing (1) to the rotating assembly (4). Pull the
pump casing straight away from the rotating as­sembly to prevent binding on the impeller. Remove
the shims (7). Tie and tag the shims or measure
and record their thickness for ease of reassembly.

Turn

Counterclockwise

Lathe Dog Arm

V" Notch

Heavy

Bar Stock

Figure 13. Loosening Impeller

MAINTENANCE & REPAIR PAGE E − 25

Shaft Key

Impeller Shaft

Lathe Dog

Setscrew

Inspect the wear plate assembly (11) for excessive
wear or scoring. If replacement is required, remove
the hardware (12 and 13) and pull the wear plate
out of the pump casing.

Impeller Removal

(Figure 9)

With the rotating assembly removed from the
pump casing, unscrew the impeller (1) from the
shaft (25). Use caution when unscrewing the im­peller; tension on the shaft seal spring will be re­leased as the impeller is removed. Inspect the im­peller and replace if cracked or badly worn.

Remove the impeller adjusting shims (3); tie and
tag the shims, or measure and record their thick­ness for ease of reassembly.

PA SERIESOM−06301

Seal Removal

(Figures 9 and 14)

Slide the integral shaft sleeve and rotating portion
of the seal off the shaft as a unit.

Use a pair of stiff wires with hooked ends to remove
the stationary element and seat from the seal plate
(5).

An alternate method of removing the stationary
seal components is to remove the hardware (7 and

8) and separate the seal plate and gasket (6) from
the intermediate (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 seat until the seat, O­rings, and stationary element can be removed.

Remove the shaft sleeve O-ring 4) and seal plate
O-ring (27).

ings (22 and 26) from the bearing housing. Press
the oil seal (17A) from the bearing housing.

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 compo­nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.

If no further disassembly is required, refer to Seal

Installation.

Shaft and Bearing Removal and Disassembly

(Figure 9)

When the pump is properly operated and main­tained, the bearing housing should not require dis­assembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.

Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.

Remove the bearing housing drain plug (24) and
drain the lubricant. Clean and reinstall the drain
plug.

Disengage the hardware (15 and 16) and remove
the bearing cap (18), gasket (20) and oil seal (17).
Press the oil seal from the bearing cap.

Most cleaning solvents are toxic and
flammable. Use them only in a well ven­tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain­ers.

Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.

Bearings must be kept free of all dirt and
foreign material. Failure to do so will great­ly shorten bearing life. Do not spin dry
bearings. This may scratch the balls or
races and cause premature bearing fail­ure.

Rotate the bearings by hand to check for rough­ness or binding and inspect the bearing balls. If ro­tation is rough or the bearing balls are discolored,
replace the bearings.

Place a block of wood against the impeller end of
the shaft and tap the shaft and assembled bear-

The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the bearing

MAINTENANCE & REPAIRPAGE E − 26

PA SERIES

OM−06301

housing. Replace the bearings, shaft, or bearing
housing if the proper bearing fit is not achieved.

If bearing replacement is required, remove the
snap ring (21) and use a bearing puller to remove
the inboard and outboard bearings from the shaft.

Shaft and Bearing Reassembly and Installation

(Figure 9)

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.

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
hot plate may be used to heat the bearings. Bear­ings 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 (22) on the shaft with
the retaining ring on the bearing O.D. toward the
drive end of the shaft.

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
away from the shaft shoulders in shrinking. If
movement has occurred, use a suitably sized
sleeve and a press to reposition the bearings
against the shaft shoulders.

If heating the bearings is not practical, use a suit­ably 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, or ball cage. Press only on the
inner race.

Secure the outboard bearing to the shaft with the
snap ring (21)

Apply a light coating of oil to the lip of the inboard oil
seal (17A) and press it into the intermediate bore
with the lip positioned as shown in Figure 9. Press
the oil seal into the housing until the face is just
flush with the machined surface on the housing.

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 bearing housing. 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 larger 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 as­sembled bearings into the intermediate until the re­taining ring on the outboard bearing seats against
the intermediate. Remove the lip seal sleeve.

Heat the bearings to a uniform temperature no
higher than 250F (120C), and slide the bearings
onto the shaft, one at a time, until they are fully
seated against the shaft shoulders. This should be

MAINTENANCE & REPAIR PAGE E − 27

When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.

PA SERIESOM−06301

Apply a light coating of oil to the lip of the outboard
oil seal (17) and press it into the bearing cap (18)
with the lip positioned as shown in Figure 9. The
face of the oil seal should be just flush with the out­er face of the bearing cap.

Install the bearing cap gasket (20) and secure the
bearing cap to the bearing housing with the hard­ware (15 and 16). Be careful not to damage the lip
of the oil seal on the shaft keyway.

Lubricate the bearings as indicated in LUBRICA-

TION at the end of this section.

Securing Bearing Housing And Drive Assembly
To Engine

(Figure 12)

Install the shaft key (23, Figure 9) in the shaft key­way. Position the flexible portion of the coupling as­sembly (3) on the shaft as shown in Figure 12.

NOTE

The flexible portion of the coupling must be proper­ly positioned on the shaft. The heads of the caps­crews in the center of the coupling must be posi-
tioned away from the pump.

Align the keyway in the bushing (2) with the shaft
key, and slide it onto the shaft until the face of the
bushing is just flush with the end of the shaft. Ro­tate the flexible portion of the coupling until the
tapped holes for the two setscrews align with those
in the bushing, and install the setscrews.

gine bellhousing, without pre-loading the
bearings.

With the flexible portion of the coupling and the
bushing properly positioned on the shaft, tighten
the two setscrews in an alternating sequence until
the bushing and coupling are fully secured. Torque
the setscrews to 23.3 ft. lbs. (280 in. lbs. or 3,2 m.
kg.).

If the complete coupling assembly is being re­placed, apply ‘Loctite Retaining Compound No.
242’ or equivalent to the threads of the hardware (4
and 5) and secure the outer ring of the coupling to
the engine flywheel by torquing the hardware to 45
ft. lbs. (540 in. lbs. or 6,2 m. kg.).

Using a suitable lifting device, position the as­sembled drive and rotating assembly so the flex­ible portion of the coupling seats inside the outer
ring attached to the engine flywheel.

NOTE

To ease installation, lightly lubricate the rubber por­tion of the coupling with a non-petroleum based
lubricant such as vegetable oil or glycerin, or a sili­con-based lubricant such as WD40" or equivalent.
Do not use petroleum-based lubricants, or any oth­er substance which may soften or otherwise dam­age the rubber.

Install the intermediate guards (10, Figure 9) and
secure the bearing housing to the engine bellhous­ing with the previously removed hardware (6 and

7).

Make certain that the flexible portion of the
coupling is just flush with the end of the
shaft. This positioning is critical. If the
coupling is not properly positioned on the
shaft, the coupling parts may not fully en­gage, or a pre-load condition can cause
premature bearing failure.

The end of the shaft must be just flush with
the face of the bushing. This will allow the
two portions of the coupling to fully engage
when the intermediate is secured to the en-

Seal Reassembly and Installation

(Figures 9, 14, 15 and 16)

Most cleaning solvents are toxic and
flammable. Use them only in a well ven­tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain­ers.

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,

MAINTENANCE & REPAIRPAGE E − 28

PA SERIES

OM−06301

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

RETAINER

SPRING

IMPELLER

IMPELLER

SHIMS

IMPELLER

SHAFT

ROTATING

BELLOWS

ELEMENT

pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema­ture failure.

To ease installation of the seal, lubricate the shaft
sleeve O-ring and the external stationary seat O­ring with a very small amount of light lubricating oil.
See Figure 14 for seal part identification.

SEAL PLATE

O-RINGS

SLEEVE
O-RING

INTEGRAL

STATIONARY

ELEMENT

SHAFT

SLEEVE

SPRING

CENTERING

WASHER

DRIVE BAND

Figure 14. Cartridge Seal Assembly

This seal is not designed for operation at
temperatures above 160F (71C). Do not

use at higher operating temperatures.

If the seal plate was removed, install the seal plate
gasket (6). Position the seal plate over the shaft
and secure it to the bearing housing with the hard­ware (7 and 8).

SHEAR

RING

(SHEARED)

STATIONARY

SEAT

than the O.D. of the shaft. To ease installation the
tubing wall should be as thin as possible. The
length should be long enough to cover the threads
on the end of the shaft. Slide the tube over the shaft
threads, then slide the O-ring off the tube and onto
the shaft. Remove the tube, and continue to slide
the O-ring down the shaft until it seats against the
shaft shoulder.

Lubricate the external stationary seat O-ring with
light oil. Slide the seal assembly onto the shaft until
the external stationary seat O-ring engages the
bore in the seal plate.

To prevent damaging the shaft sleeve O-ring (4) on
the shaft threads, stretch the O-ring over a piece of
tubing. The I.D. of the tubing must be slightly larger

MAINTENANCE & REPAIR PAGE E − 29

Clean and inspect the impeller as described in Im­peller Installation and Adjustment. Install half of

the set of impeller shims (3) provided with the seal,

PA SERIESOM−06301

and screw the impeller onto the shaft until it is
seated against the seal (see Figure 15).

O-RING ENGAGED
WITH SEAL PLATE

BORE

SHEAR RING

(UNSHEARED)

Figure 15. Seal Partially Installed

Continue to screw the impeller onto the shaft. This
will press the stationary seat into the seal plate
bore.

NOTE

A firm resistance will be felt as the impeller presses
the stationary seat into the seal plate bore.

Measure the impeller-to-seal plate clearance, and
add or remove impeller adjusting shims to obtain
the proper clearance as described in Impeller In-

stallation and Adjustment.

If necessary to reuse an old seal in an emer-

gency, carefully separate the rotating and station­ary seal faces from the bellows retainer and sta­tionary seat.

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 prema­ture failure.

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.

As the stationary seat becomes fully seated, the
seal spring compresses, and the shaft sleeve will
break the nylon shear ring. This allows the sleeve
to slide down the shaft until seated against the
shaft shoulder. Continue to screw the impeller onto
the shaft until the impeller, shims, and sleeve are
fully seated against the shaft shoulder (see Figure

16).

STATIONARY SEAT

FULLY SEATED IN

SEAL PLATE BORE

SHEAR RING

(SHEARED)

Figure 16. Seal Fully Installed

Carefully wash all metallic parts in fresh cleaning

solvent and allow to dry thoroughly.

Do not attempt to separate the rotating
portion of the seal from the shaft sleeve
when reusing an old seal. The rubber bel­lows will adhere to the sleeve during use,
and attempting to separate them could
damage the bellows.

Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak­age. Inspect the integral shaft sleeve for nicks or
cuts on either end. If any components are worn, or
the sleeve is damaged, replace the complete seal;
never mix old and new seal parts.

Install the stationary seal element in the stationary
seat. Press this stationary subassembly into the
seal plate bore until it seats squarely against the
bore shoulder. A push tube made from a piece of
plastic pipe would aid this installation. The I.D. of

MAINTENANCE & REPAIRPAGE E − 30

PA SERIES

OM−06301

the pipe should be slightly larger than the O.D. of
the shaft sleeve.

Slide the rotating portion of the seal (consisting of
the integral shaft sleeve, spring centering washer,
spring, bellows and retainer, and rotating element)
onto the shaft until the seal faces contact.

Proceed with Impeller Installation and Adjust-

ment.

Impeller Installation And Adjustment

(Figure 9)

Inspect the impeller (1) and replace it if cracked or
badly worn.

The shaft and impeller threads must be
completely clean before reinstalling the im­peller. Even the slightest amount of dirt on
the threads can cause the impeller to seize
to the shaft, making future removal difficult
or impossible without damage to the im­peller or shaft.

Apply a small amount of ‘Never-Seez’ or equivalent
anti-lock compound on the shaft threads. Screw
the impeller onto the shaft until tight.

Lubricate the O-rings (3 and 9) with light grease,
and install them in the grooves in the intermediate
and seal plate. Use a suitable lifting device to posi­tion the pump casing over the rotating assembly.
Be careful not to damage the O-rings.

Install the same thickness of adjusting shims (7) as
previously removed and secure the rotating as­sembly to the pump casing with the hardware (5
and 6). Do not fully tighten the capscrews until the
impeller face clearance has been set.

A clearance of .010 to .020 inch (0,25 to 0,5 mm)
between the impeller and the wear plate is also rec­ommended for maximum pump efficiency. This
clearance can be obtained by adding or removing
an equal thickness of shims from each rotating as­sembly shim sets (7) until the impeller just touches
the wear plate. After the impeller touches the wear
plate, add approximately .010 inch (0,25 mm) of
shims to each shim set.

After the face clearance has been set, tighten the
hardware securing the rotating assembly to the
pump casing.

Reinstall any leveling shims used under the pump
casing mounting feet and secure the casing (1) to
the base with the previously removed hardware.

Discharge Check Valve Reassembly And
Installation

NOTE

At the slightest sign of binding, immediately back
the impeller off, and check the threads for dirt. Do

not try to force the impeller onto the shaft.

A clearance of .025 to .040 inch (0,64 to 1,02 mm)
between the impeller and the seal plate is neces­sary for maximum pump efficiency. Measure this
clearance, and add or remove impeller adjusting
shims as required.

Pump Casing And Wear Plate Installation

(Figure 8)

If the wear plate (11) was removed, position the re­placement wear plate in the casing and secure it
with the hardware (12 and 13).

MAINTENANCE & REPAIR PAGE E − 31

(Figure 7)

If the discharge check valve (7) was disassembled
to replace the flapper or cover O-ring, position the
flapper in the valve body and check to ensure free
movement.

Install the valve cover O-ring and secure the cover
to the body with the previously removed hardware.

Apply a small amount of light grease to the dis­charge flange gasket to hold it in place and posi­tion it against the pump casing flange. Support the
discharge check valve assembly using a sling and
a suitable lifting device. Using the previously re­moved hardware, secure the discharge check
valve assembly and flange gasket to the pump as­sembly (1).

PA SERIESOM−06301

Priming Chamber Assembly And Installation

(Figure 11)

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 ori­fice 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).

checked by inserting a screwdriver through the
vented plug opening until it bottoms out. Remove
the screwdriver and the tip should have just a little
oil on it. Clean and reinstall the vented plug. Main­tain the oil level above the minimum oil level line in­dicated by the decal on the pump casing.

Bearings

(Figure 9)

The intermediate was fully lubricated when
shipped from the factory. Check the oil level regu­larly through the sight gauge (19) and maintain it at
the midpoint of the gauge. When lubrication is re­quired, remove the air vent and bushing (12 and

13) and add SAE No. 30 non-detergent oil through
the opening. When lubricating a dry (overhauled)
intermediate, fill the bearing cavity with approxi­mately 21 ounces (0,6 liter). 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 posi­tioned horizontally to provide proper drainage.

Lower the float into the priming chamber (5) and
secure the priming valve with the previously re­moved hardware (2 and 3).

(Figure 10)

Install the baffle (9) and gasket (8) and use a sling
and suitable lifting device to position the priming
chamber assembly on the hopper spool (6, Figure

7). Secure the priming chamber assembly with the
hardware (6 and 7).

Reconnect the suction piping to the hopper spool
and the air discharge tubing to the priming cham­ber assembly.

LUBRICATION

Seal Assembly

(Figure 9)

Before starting the pump, remove the vented plug
(8) and fill the seal cavity with approximately 5
quarts (4,7 liters) of SAE No. 30 non-detergent oil
or until the internal casting is covered. This can be

Under normal conditions, drain the bearing hous­ing once each year and refill with clean oil. Change
the oil more frequently if the pump is operated con­tinuously or installed in an environment with rapid
temperature change.

Monitor the condition of the bearing lubri­cant regularly for evidence of rust or mois­ture condensation. This is especially im­portant 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 − 32

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  MANSFIELD, OHIO

GORMAN-RUPP OF CANADA LIMITED  ST. THOMAS, ONTARIO, CANADA