GORMAN-RUPP PUMPS 60 Series Application guide

OM−01420−OP04
July 15, 1998
AE
THE GORMAN-RUPP COMPANY MANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
Copyright by the Gorman-Rupp Company
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
60 SERIES PUMPS
MODEL
64A2−G

The engine exhaust from this
product contains chemicals
known to the State of California to
cause cancer, birth defects or
other reproductive harm.

TABLE OF CONTENTS
i
INTRODUCTION PAGE I − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNINGS − SECTION A PAGE A − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION − SECTION B PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Dimensions PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREINSTALLATION INSPECTION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POSITIONING PUMP PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lifting PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION AND DISCHARGE PIPING PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Materials PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Configuration PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connections to Pump PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gauges PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION LINES PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fittings PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strainers PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sealing PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Lines In Sumps PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Line Positioning PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISCHARGE LINES PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siphoning PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valves PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALIGNMENT PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION − SECTION C PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRIMING PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hand-Operated Priming Pump PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leakage PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liquid Temperature And Overheating PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strainer Check PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Vacuum Check PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOPPING PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cold Weather Preservation PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GEARBOX TEMPERATURE CHECK PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING − SECTION D PAGE D − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREVENTIVE MAINTENANCE PAGE D − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP MAINTENANCE AND REPAIR − SECTION E PAGE E − 1. . . . . . . . . . . . . . . . .
PERFORMANCE CURVE PAGE E − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS LISTS:
Pump Model PAGE E − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE OF CONTENTS
(continued)
ii
Pump End Assy PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox Assy PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Head And Wear Ring Removal PAGE E − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Removal PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Removal And Disassembly PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP AND SEAL REASSEMBLY PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Reassembly And Installation PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Installation PAGE E − 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Head And Wear Ring Installation PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Final Pump Reassembly PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GEARBOX DISASSEMBLY PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox Removal PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox Disassembly PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GEARBOX REASSEMBLY PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing Cleaning And Inspection PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox Reassembly PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox Installation PAGE E − 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION PAGE E − 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Assembly PAGE E − 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox PAGE E − 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source PAGE E − 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

60 SERIES OM−01420
PAGE I − 1INTRODUCTION
INTRODUCTION
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 60 Series, semi-open impeller, cen-
trifugal model with a straight-in suction, without a
suction check valve. The pump is designed for dis-
tribution of clean liquids that do not contain large
entrained solids. The basic material of construc-
tion for wetted parts is gray iron, with bronze wear-
ing parts.
The pump is close-coupled to a 550 RPM gearbox
speed increaser with a 4.82:1 ratio. Power is trans-
mitted to the gearbox through a universal shaft as-
sembly designed to be connected to a mobile PTO
power source.
If there are any questions regarding the pump or its application which are not covered in this manual or in
other literature accompanying this unit, please contact your Gorman-Rupp distributor, or write:
The Gorman-Rupp Company or Gorman-Rupp of Canada Limited
P.O. Box 1217 70 Burwell Road
Mansfield, Ohio 44901−1217 St. Thomas, Ontario N5P 3R7
For information or technical assistance on the power source, contact the power source manufacturer’s local
dealer or representative.
The following are used to alert maintenance personnel to procedures which require special attention, to
those which could damage equipment, and to those which could be dangerous to personnel:
Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure re-
quired and the injury which will result
from failure to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.
Hazards or unsafe practices which COULD
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possi-
ble damage which could result from failure
to follow the procedure.
NOTE
Instructions to aid in installation, operation,and
maintenance, or which clarify a procedure.

60 SERIES OM−01420
PAGE A − 1SAFETY
SAFETY − SECTION A
This information applies to 60 Series
PTO Driven pumps. Refer to the manual
accompanying the power source before
attempting to begin operation.
Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and pre-
cautions for each specific application.
Therefore, it is the owner/installer’s re-
sponsibility to ensure that applications
not addressed in this manual are per-
formed only after establishing that nei-
ther operator safety nor pump integrity
are compromised by the installation.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Disconnect the power source or
take other precautions to ensure
that the pump will remain inopera-
tive.
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 cau-
tiously.
7. Drain the pump.
This pump is designed for high pres-
sure distribution of clean liquids that do
not contain large entrained solids. Do
not attempt to pump volatile, corrosive,
or flammable materials, or any liquids
which may damage the pump or endan-
ger personnel as a result of pump fail-
ure.
After the pump has been positioned,
make certain that the pump and all pip-
ing or hose connections are tight, prop-
erly supported and secure before oper-
ation.
Do not operate the pump against a
closed discharge valve for long periods
of time. If operated against a closed dis-
charge valve, pump components will
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over-
heated pump. Vapor pressure within the
pump can cause parts being disen-
gaged to be ejected with great force. Al-
low the pump to cool before servicing.
Do not operate the pump without the
guard(s) in place over the rotating parts.
Use caution when working near the
power coupling end of the power take-
off shaft. Exposed rotating parts can
catch clothing, fingers, or tools, causing
severe injury to personnel.

60 SERIES
OM−01420
PAGE A − 2 SAFETY
The gearbox provided on this pump is
designed for operation at a maximum in-
put speed of 550 RPM. If operated at a
higher RPM, pump or gearbox compo-
nents may be destroyed.
Never run this pump backwards. Be cer-
tain that rotation is correct before fully
engaging the pump.
Pumps and related equipment must be in-
stalled and operated according to all na-
tional, local and industry standards.

OM−0142060 SERIES
PAGE B − 1INSTALLATION
INSTALLATION − SECTION B
Review all Safety information in Section A.
Since pump installations are seldom identical, this
section offers only general recommendations and
practices required to inspect, position, and ar-
range the pump and piping.
Most of the information pertains to a standard
static lift application where the pump is positioned
above the free level of liquid to be pumped.
If installed in a flooded suction application where
the liquid is supplied to the pump under pressure,
some of the information such as mounting, line
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. (See Sec-
tion E, Page 1.) Since the pump is fitted with a Gor-
man-Rupp double grease lubricated seal, the
maximum incoming pressure must be reduced to
10 p.s.i.
For further assistance, contact your Gorman-Rupp
distributor or the Gorman-Rupp Company.
Pump Dimensions
See Figure 1 for the approximate physical dimen-
sions of this pump.
OUTLINE DRAWING
14.88
[378,0]
28.19
[716.0]
4" N.P.T. SUCTION
4" N.P.T.DISCHARGE
14
[355,6]
17.12
[434,9]
APPROX.
7.63
[193,8]
6.75
[171,5]
35.88
[911,4]
17.94
[455,7]
DIMENSIONS: INCHES
[MILLIMETERS]
A MIN.
8.19
[208,0]
18.19
[462,0]
A MAX.
49.56
[1258.8]
HEIGHT AT MAX. LENGTH
HEIGHT AT MIN. LENGTH
15MAX. RECOMMENDED
OPERATING ANGLE
10.25
[260,35] APPROX.
39.31
[998,5] 1 3/8 SPLINE
7.44
[189,0]
11.81
[300,0]
9.13
[231,9]
A
Figure 1. Pump Model 64A2−G
PREINSTALLATION INSPECTION
The pump assembly was inspected and tested be-
fore shipment from the factory. Before installation,
inspect the pump for damage which may have oc-
curred during shipment. Check as follows:
a. Inspect the pump for cracks, dents, damaged
threads, and other obvious damage.
b. Check for and tighten loose attaching hard-
ware. Since gaskets tend to shrink after dry-

OM−01420 60 SERIES
PAGE B − 2 INSTALLATION
ing, check for loose hardware at mating sur-
faces.
c. Carefully read all tags, decals, and markings
on the pump assembly, and follow the instruc-
tions indicated.
d. Check levels and lubricate as necessary. Re-
fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and per-
form duties as instructed.
e. If the pump has been stored for more than 12
months, some of the components or lubri-
cants may have exceeded their maximum
shelf life. These must be inspected or re-
placed to ensure maximum pump service.
If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman-Rupp distributor or the factory to deter-
mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
POSITIONING PUMP
Lifting
Use lifting equipment with a capacity of at least
2150 pounds (975 kg). This pump weighs ap-
proximately 429 pounds (195 kg), not including
the weight of accessories and suction and dis-
charge piping. Customer installed equipment such
as suction and discharge piping must be removed
before attempting to lift.
The pump assembly can be seriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
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.
If the pump has been mounted on a movable base,
make certain the base is stationary by setting the
brake and blocking the wheels before attempting
to operate the pump.
To ensure sufficient lubrication and fuel supply to
the engine, do not position the pump and engine
more than 15off horizontal for continuous opera-
tion. The pump and engine may be positioned up
to 30off horizontal for intermittent operation
only; however, the engine manufacturer should be
consulted for continuous operation at angles
greater than 15.
SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by in-
creased suction lift, discharge elevation, and fric-
tion losses. See the performance curve and oper-
ating range shown on Page E-1 or contact the fac-
tory to be sure your overall application allows the
pump to operate within the safe operation range.
Materials
Either pipe or hose maybe used for suction and
discharge lines; however, the materials must be
compatible with the liquid being pumped. If hose is
used in suction lines, it must be the rigid-wall, rein-
forced type to prevent collapse under suction. Us-
ing piping couplings in suction lines is not recom-
mended.
Line Configuration
Keep suction and discharge lines as straight as
possible to minimize friction losses. Make mini-
mum use of elbows and fittings, which substan-
tially increase friction loss. If elbows are necessary,
use the long-radius type to minimize friction loss.
Connections to Pump
Before tightening a connecting flange, align it ex-
actly with the pump port. Never pull a pipe line into
place by tightening the flange bolts and/or cou-
plings.
Lines near the pump must be independently sup-
ported to avoid strain on the pump which could
cause excessive vibration, decreased bearing life,
and increased shaft and seal wear. If hose-type

OM−0142060 SERIES
PAGE B − 3INSTALLATION
lines are used, they should have adequate support
to secure them when filled with liquid and under
pressure.
Gauges
Most pumps are drilled and tapped for installing
discharge pressure and vacuum suction gauges. If
these gauges are desired for pumps that are not
tapped, drill and tap the suction and discharge
lines not less than 18 inches (457,2 mm) from the
suction and discharge ports and install the lines.
Installation closer to the pump may result in erratic
readings.
SUCTION LINES
To avoid air pockets which could affect pump 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
If a strainer is furnished with the pump, be certain
to use it; any spherical solids which pass through a
strainer furnished with the pump will also pass
through the pump itself.
If a strainer is not furnished with the pump, but is
installed by the pump user, make certain that the
total area of the openings in the strainer is at least
three or four times the cross section of the suction
line, and that the openings will not permit passage
of solids larger than the solids handling capability
of the pump.
This pump is designed to handle up to 3/8 inch (9,7
mm) diameter spherical solids.
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 air-
tight seal. Follow the sealant manufacturer’s rec-
ommendations when selecting and applying the
pipe dope. The pipe dope should be compatible
with the liquid being pumped.
Suction Lines In Sumps
If a single suction line is installed in a sump, it
should be positioned away from the wall of the
sump at a distance equal to 1 1/2 times the diame-
ter of the suction line.
If there is a liquid flow from an open pipe into the
sump, the flow should be kept away from the suc-
tion inlet because the inflow will carry air down into
the sump, and air entering the suction line will re-
duce pump efficiency.
If it is necessary to position inflow close to the suc-
tion inlet, install a baffle between the inflow and the
suction inlet at a distance 1 1/2 times the diameter
of the suction pipe. The baffle will allow entrained
air to escape from the liquid before it is drawn into
the suction inlet.
If two suction lines are installed in a single sump,
the flow paths may interact, reducing the efficiency
of one or both pumps. To avoid this, position the
suction inlets so that they are separated by a dis-
tance equal to at least 3 times the diameter of the
suction pipe.
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation. Figure 2 shows
recommended minimum submergence vs. veloc-
ity.
NOTE
The pipe submergence required may be reduced
by installing a standard pipe increaser fitting at the
end of the suction line. The larger opening size will

OM−01420 60 SERIES
PAGE B − 4 INSTALLATION
reduce the inlet velocity. Calculate the required
submergence using the following formula based
on the increased opening size (area or diameter).
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity
DISCHARGE LINES
Siphoning
Do not terminate the discharge line at a level lower
than that of the liquid being pumped unless a si-
phon breaker is used in the line. Otherwise, a si-
phoning action causing damage to the pump
could result.
Valves
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 and a system check valve be in-
stalled in the discharge line to protect the pump
from excessive shock pressure and reverse rota-
tion when it is stopped.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
ALIGNMENT
This unit is provided with an adjustable power take-
off shaft fitted with universal joints to fit a standard 1
3/8 inch, 6-tooth splined power take-off shaft. Refer
to the installation drawing in this section for shaft
spline size.
The alignment of the unit and the power source is
critical for trouble-free mechanical operation and
maximum pump performance. It is imperative that
alignment be checked before the unit is put into op-
eration.
When installing and/or aligning the

OM−0142060 SERIES
PAGE B − 5INSTALLATION
power take off shaft, disconnect the
power source or take other precautions
to ensure that the unit will remain inop-
erative.
When mounted at the Gorman-Rupp factory, driver
and pump are aligned before shipment. Misalign-
ment can occur in transit and handling. Pumps
should be checked, and realigned if necessary, be-
fore being put into operation. Before checking
alignment, make certain that all mounting hard-
ware is tight.
The unit and the power source drive are generally
positioned so that the power take-off shaft center-
lines are parallel and horizontal. The maximum op-
erating angle should not exceed 15 degrees (see
Figure 3).
Check the direction of rotation of the power source
drive shaft, power take-off drive shaft, and pump
drive shaft before starting the pump. The pump
drive shaft must rotate in the direction shown on
the body of the pump, and on decals, tags, and la-
bels.
Do not operate the unit without the
guard in place over the rotating parts.
Use caution when working near the
power coupling end of the power take-
off shaft. Exposed rotating parts can
catch clothing, fingers, or tools, causing
severe injury to personnel.
After the power take-off shaft has been aligned,
block the wheels of the external power source, en-
gage the braking system, or take other precau-
tions to ensure that the power source will remain
stationary. Block the wheels on the unit to prevent
creeping.
LUG ALIGNMENT
SHAFTS PARALLEL, ANGLES EQUAL
SHAFTS NOT PARALLEL, ANGLES EQUAL
LUGS MUST BE IN LINE, REGARDLESS
OF OPERATING ANGLE SHOWN BELOW
Figure 3. Proper Installation and Alignment of Universal Assembly

OM−01420
60 SERIES
OPERATION PAGE C − 1
OPERATION − SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
This pump is designed for high pres-
sure distribution of clean liquids that do
not contain large entrained solids. Do
not attempt to pump volatile, corrosive,
or flammable materials, or any liquids
which may damage the pump or endan-
ger personnel as a result of pump fail-
ure.
Do not operate the pump without the
guard(s) in place over the rotating parts.
Use caution when working near the
power coupling end of the power take-
off shaft. Exposed rotating parts can
catch clothing, fingers, or tools, causing
severe injury to personnel.
The gearbox provided on this pump is
designed for operation at a maximum in-
put speed of 550 RPM. If operated at a
higher RPM, pump or gearbox compo-
nents may be destroyed.
PRIMING
Install the pump and piping as described in IN-
STALLATION. Make sure that the piping connec-
tions are tight, and that the pump is securely
mounted. Check that the pump and gearbox are
properly lubricated (see LUBRICATION in MAIN-
TENANCE AND REPAIR).
Since this pump is not self-priming, it is equipped
with a hand-operated vacuum priming pump, and
a spring-loaded check valve.
Refer to the following instructions for operation of
the hand primer and spring-loaded check valve.
Additional information on installation, operation
and maintenance of theses assemblies is con-
tained in accompanying literature.
Never operate this pump unless there is
liquid in the pump casing. The pump will
not prime when dry. Extended operation of
a dry pump will destroy the seal assembly.
Hand-Operated Priming Pump
The hand-operated priming pump (see Figure 1) is
designed to prime the centrifugal pump by eva-
cuating air from the pump casing and suction line.
To prime a pump with a hand vacuum pump, close
the discharge line throttling valve and spring-
loaded check valve (if so equipped). Make sure the
drain cock in the bottom of the priming pump is
closed. Start the centrifugal pump, and operate the
handle on the priming pump until liquid flows from
the pump discharge. After shutting down the
pump, be sure to open the drain cock in the bot-
tom of the hand primer and drain out any liquid in
preparation for the next priming cycle, and to pre-
vent damage in the below freezing conditions.
DRAIN
COCK
HANDLE
Figure 1. Hand Primer Assembly

OM−01420 60 SERIES
OPERATIONPAGE C − 2
STARTING
Consult the operations manual furnished with the
power source.
OPERATION
After the pump has been primed, partially close the
discharge line throttling valve in order to fill the line
slowly and guard against excessive shock pres-
sure which could damage pipe ends, gaskets,
sprinkler heads, and any other fixtures connected
to the line. When the discharge line is completely
filled, adjust the throttling valve to the required flow
rate.
Leakage
No leakage should be visible at pump mating sur-
faces, or at pump connections or fittings. Keep all
line connections and fittings tight to maintain maxi-
mum pump efficiency.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
110F (43 C). Do not apply it at a higher operat-
ing temperature.
Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rup-
ture or explode. If overheating occurs, stop the
pump and allow it to cool before servicing it. Refill
the pump casing with cool liquid.
Allow an over-heated pump to com-
pletely cool before servicing. Do not re-
move 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.
Strainer Check
If a suction strainer has been shipped with the
pump or installed by the user, check the strainer
regularly, and clean it as necessary. The strainer
should also be checked if pump flow rate begins to
drop. If a vacuum suction gauge has been in-
stalled, monitor and record the readings regularly
to detect strainer blockage.
Never introduce air or steam pressure into the
pump casing or piping to remove a blockage. This
could result in personal injury or damage to the
equipment. If backflushing is absolutely neces-
sary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure shown
on the pump performance curve. (See Section E,
Page 1.) Since the pump is fitted with a Gorman-
Rupp double grease lubricated seal, the maximum
incoming pressure must be reduced to 10 p.s.i.
Pump Vacuum Check
With the pump inoperative, install a vacuum gauge
in the system, using pipe dope on the threads.
Block the suction line and start the pump. At oper-
ating speed the pump should pull a vacuum of 20
inches (508 mm) or more of mercury. If it does not,
check for air leaks in the seal, gasket, or discharge
valve.
Open the suction line, and read the vacuum gauge
with the pump primed and at operation speed.
Shut off the pump. The vacuum gauge reading will
immediately drop proportionate to static suction
lift, and should then stabilize. If the vacuum reading
falls off rapidly after stabilization, an air leak exists.
Before checking for the source of the leak, check
the point of installation of the vacuum gauge.
STOPPING
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
On engine driven pumps, reduce the throttle
speed slowly and allow the engine to idle briefly be-
fore stopping.

OM−01420
60 SERIES
OPERATION PAGE C − 3
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
After stopping the pump, disconnect the power
source or take other action to ensure that the pump
will remain inoperative.
Cold Weather Preservation
In below freezing conditions, drain the pump to
prevent damage from freezing. Also, clean out any
solids by flushing with a hose. Operate the pump
for approximately one minute; this will remove any
remaining liquid that could freeze the pump rotat-
ing parts. If the pump will be idle for more than a
few hours, or if it has been pumping liquids con-
taining a large amount of solids, drain the pump,
and flush it thoroughly with clean water. To prevent
large solids from clogging the drain port and pre-
venting the pump from completely draining, insert
a rod or stiff wire in the drain port, and agitate the
liquid during the draining process. Clean out any
remaining solids by flushing with a hose.
GEARBOX TEMPERATURE CHECK
The gearbox runs higher than ambient tempera-
tures because of heat generated by friction. Tem-
peratures of approximately 200 F (93 C) are
considered normal, and can operate intermittently
at 250 F (121 C).
Checking gearbox temperatures by hand is inac-
curate. Place a contact-type thermometer against
the housing and record this temperature for future
reference.
A sudden increase in gearbox temperature is a
warning that the bearings are at the point of failing.
Make certain that the bearing lubricant is of the
proper viscosity and at the correct level (see LU-
BRICATION in Section E). Bearing overheating
can also be caused by shaft misalignment and/or
excessive vibration.
When pumps are first started, the bearings may
seem to run at temperatures above normal. Con-
tinued operation should bring the temperatures
down to normal levels within 20 minutes or less.

OM−0142060 SERIES
TROUBLESHOOTING PAGE D − 1
TROUBLESHOOTING − SECTION D
Review all SAFETY information in Section A.
The following precautions should be
taken before attempting to service the
pump; otherwise, injury or death could
result.
1. Familiarize yourself with this man-
ual and with all other literature
shipped with the pump.
2. Disconnect the power source 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 cau-
tiously.
7. Drain the pump.
Table D-1 Troubleshooting Chart
TROUBLE CAUSE REMEDY
PUMP FAILS TO
PRIME
Not enough liquid in casing.
Auxiliary priming device faulty
or improperly installed.
Air leak in suction line.
Lining of suction hose col-
lapsed.
Leaking or worn seal or pump
gasket.
Suction lift or discharge dis-
charge head too high.
Strainer clogged.
Discharge check valve open.
Add liquid to casing. See PRIMING, Section B.
Repair priming device or check installation.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leaking or worn
seal or gasket.
Check piping installation and install bypass line
if needed. See INSTALLATION.
Check strainer and clean in necessary.
Check position of handle; close valve.
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Air leak in suction line.
Suction intake not submerged
at proper level or sump too
small.
Lining of suction hose col-
lapsed.
Impeller or other wearing parts
worn or damaged.
Impeller clogged.
Leaking or worn seal or pump
gasket.
Correct leak.
Check installation and correct submergence as
needed.
Replace suction hose.
Replace worn or damaged parts. Check that
impeller is properly centered and rotates freely.
Free impeller of debris.
Check pump vacuum. Replace leaking or worn
seal or gasket.

60 SERIESOM−01420
TROUBLESHOOTINGPAGE D − 2
Table D-1 Troubleshooting Chart (continued)
TROUBLE CAUSE REMEDY
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)
Suction lift too high.
Strainer clogged.
Pump speed too slow.
Discharge throttling valve par-
tially closed; check valve is
installed improperly.
Measure lift with vacuum gauge. Reduce lift
and/or friction losses in suction line.
Check strainer and clean if necessary.
Check driver output; check belts or couplings
for slippage.
Open discharge valve fully; check piping instal-
lation.
PUMP REQUIRES
TOO MUCH POWER
Pump speed too high.
Discharge head too low.
Liquid solution too thick.
Check driver speed; check that the universal
joint drive is properly installed.
Adjust discharge valve.
Dilute if possible.
PUMP CLOGS
FREQUENTLY
Discharge flow too low.
Liquid solution too thick.
Open discharge valve fully to increase flow rate,
and run power source at maximum governed
speed.
Dilute if possible.
EXCESSIVE NOISE Cavitation in pump.
Pumping entrained air.
Pump or drive not securely
mounted.
Impeller clogged or damaged.
Reduce suction lift and/or friction losses in suc-
tion line. Record vacuum and pressure gauge
readings and consult local representative or
factory.
Locate and eliminate source of air bubble.
Secure mounting hardware.
Clean out debris; replace damaged parts.
BEARINGS RUN
TOO HOT
Bearing temperature is high,
but within limits.
Low or incorrect lubricant.
Suction and discharge lines
not properly supported.
Universal joint drive misa-
ligned.
Check bearing temperature regularly to monitor
any increase.
Check for proper type and level of lubricant.
Check piping installation for proper support.
Align drive.
PREVENTIVE MAINTENANCE
Since pump applications are seldom identical, and
pump wear is directly affected by such things as
the abrasive qualities, pressure and temperature
of the liquid being pumped, this section is intended
only to provide general recommendations and
practices for preventive maintenance. Regardless
of the application however, following a routine pre-
ventive maintenance schedule will help assure
trouble-free performance and long life from your
Gorman-Rupp pump. For specific questions con-
cerning your application, contact your Gorman-
Rupp distributor or the Gorman-Rupp Company.
Record keeping is an essential component of a
good preventive maintenance program. Changes
in suction and discharge gauge readings (if so
equipped) between regularly scheduled inspec-
tions can indicate problems that can be corrected
before system damage or catastrophic failure oc-
curs. The appearance of wearing parts should also

OM−0142060 SERIES
TROUBLESHOOTING PAGE D − 3
be documented at each inspection for comparison
as well. Also, if records indicate that a certain part
(such as the seal) fails at approximately the same
duty cycle, the part can be checked and replaced
before failure occurs, reducing unscheduled down
time.
For new applications, a first inspection of wearing
parts at 250 hours will give insight into the wear rate
for your particular application. Subsequent inspec-
tions should be performed at the intervals shown
on the chart below. Critical applications should be
inspected more frequently.
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
Legend:
I = Inspect, Clean, Adjust, Repair or Replace as Necessary
C = Clean
R = Replace
* Service interval based on an intermittant duty cycle equal to approximately 4000 hours annually.
Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.
Preventive Maintenance Schedule
Item Daily Weekly Monthly Semi-
Annually
Annually
Service Interval*

OM−01420
60 SERIES
MAINTENANCE & REPAIR PAGE E − 1
PUMP MAINTENANCE AND REPAIR − SECTION E
MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK OPER-
ATING PERFORMANCE.
STANDARD PERFORMANCE FOR PUMP MODEL 64A2-G
Based on 70F (21 C) clear water at sea level
with minimum suction lift. Since pump installations
are seldom identical, your performance may be dif-
ferent due to such factors as viscosity, specific
gravity, elevation, temperature, and impeller trim.
If your pump serial number is followed by an N",
your pump is NOT a standard production model.
Contact the Gorman-Rupp Company to verify per-
formance or part numbers.
Pump speed and operating condition
points must be within the continuous per-
formance range shown on the curve.

60 SERIESOM−01420
MAINTENANCE & REPAIRPAGE E − 2
SECTION DRAWING
Figure 1. 64A2-G Pump Model