Page 1
CDSW OM-05522-01
October 3, 2003
Rev. C 06‐18‐14
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
SUPER T SERIES PUMP
MODEL
T10A65S-B
INCLUDING: /FM
GORMAN‐RUPP PUMPS
www.grpumps.com
2014 Gorman‐Rupp Pumps Printed in U.S.A.
Page 2
Register your new
Gorman‐Rupp pump online at
www.grpumps.com
Valid serial number and e‐mail address required.
RECORD YOUR PUMP MODEL AND SERIAL NUMBER
Please record your pump model and serial number in the
spaces provided below. Your Gorman‐Rupp distributor
needs this information when you require parts or service.
Pump Model:
Serial Number:
Page 3
TABLE OF CONTENTS
INTRODUCTION PAGE I - 1.................................................
SAFETY - SECTION A PAGE A - 1...........................................
INSTALLATION - SECTION B PAGE B - 1....................................
Pump Dimensions PAGE B - 1.....................................................
PREINSTALLATION INSPECTION PAGE B - 1............................................
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................................................................
Bypass Lines PAGE B - 4..........................................................
AUTOMATIC AIR RELEASE VALVE PAGE B - 5...........................................
Theory of Operation PAGE B - 6....................................................
Air Release Valve Installation PAGE B - 6............................................
ALIGNMENT PAGE B - 7..............................................................
Coupled Drives PAGE B - 8........................................................
V‐Belt Drives PAGE B - 8...........................................................
OPERATION - SECTION C PAGE C - 1......................................
PRIMING PAGE C - 1.................................................................
STARTING PAGE C - 1................................................................
OPERATION PAGE C - 1..............................................................
Lines With a Bypass PAGE C - 1....................................................
Lines Without a Bypass PAGE C - 1.................................................
Leakage PAGE C - 2..............................................................
Liquid Temperature And Overheating PAGE C - 2.....................................
Strainer Check PAGE C - 2.........................................................
Pump Vacuum Check PAGE C - 2..................................................
STOPPING PAGE C - 3................................................................
Cold Weather Preservation PAGE C - 3..............................................
BEARING TEMPERATURE CHECK PAGE C - 3..........................................
TROUBLESHOOTING - SECTION D PAGE D - 1..............................
PREVENTIVE MAINTENANCE PAGE D - 3...............................................
i
Page 4
TABLE OF CONTENTS
(continued)
PUMP MAINTENANCE AND REPAIR - SECTION E PAGE E - 1................
PERFORMANCE CURVE PAGE E - 1...................................................
PARTS LISTS:
Pump Model PAGE E - 3..........................................................
Repair Rotating Assembly PAGE E - 5...............................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E - 6.........................
Cleanout Access And Suction Check Valve Removal PAGE E - 6.......................
Suction Head And Wear Plate Removal PAGE E - 7...................................
Rotating Assembly Removal PAGE E - 7.............................................
Impeller Removal PAGE E - 8......................................................
Seal Removal And Disassembly PAGE E - 8.........................................
Shaft and Bearing Removal and Disassembly PAGE E - 8.............................
Shaft and Bearing Reassembly and Installation PAGE E - 9............................
Seal Reassembly and Installation PAGE E - 11........................................
Impeller Installation and Adjustment PAGE E - 13......................................
Rotating Assembly Installation PAGE E - 14...........................................
Suction Head And Wear Plate Installation PAGE E - 14.................................
Suction Check Valve Installation PAGE E - 14.........................................
PRESSURE RELIEF VALVE MAINTENANCE PAGE E - 14..................................
LUBRICATION PAGE E - 15.............................................................
Seal Assembly PAGE E - 15.........................................................
Bearings PAGE E - 15..............................................................
ii
Page 5
SUPER T SERIES OM-05522
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp pump.
Read this manual carefully to learn how to safely
install and operate your pump. Failure to do so
could result in personal injury or damage to the
pump.
This pump is a Super T‐Series, semi‐open impeller,
self‐priming centrifugal model with a suction check
valve. It is designed for handling sewage, waste
water, trash and slurries containing large entrained
solids. The basic material of construction for
wetted parts is grade CD4MCU stainless steel.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in
structions and precautions for every aspect of
each specific application. Therefore, it is the re
sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com
promised by the installation. Pumps and related
equipment must be installed and operated ac
cording to all national, local and industry stan
dards.
If there are any questions regarding the pump or
its application which are not covered in this man
ual or in other literature accompanying this unit,
please contact your Gorman‐Rupp distributor, or
The Gorman‐Rupp Company:
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
The following are used to alert maintenance per
sonnel to procedures which require special atten
tion, to those which could damage equipment, and
to those which could be dangerous to personnel:
Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure re
quired and the injury which will result
from failure to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.
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.
For information or technical assistance on the
power source, contact the power source manufac
turer's local dealer or representative.
PAGE I - 1INTRODUCTION
Page 6
SUPER T SERIES OM-05522
SAFETY - SECTION A
This information applies to Super T Se
ries basic pumps. Gorman‐Rupp has no
control over or particular knowledge of
the power source which will be used.
Refer to the manual accompanying the
power source before attempting to be
gin 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 or lock out the power
source, or take other action to en
sure that the pump will remain in
operative.
3. Allow the pump to completely cool
if overheated.
4. Vent the pump slowly and cau
tiously.
5. Close the suction and discharge
valves.
6. Check the temperature before
opening any covers, plates, or
plugs.
7. Drain the pump.
taining large entrained solids. Do not at
tempt to pump volatile or flammable ma
terials which may damage the pump or
endanger personnel as a result of pump
failure.
After the pump has been positioned,
make certain that the pump and all pip
ing connections are tight, properly sup
ported and secure before operation.
Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
Do not operate the pump without
shields and /or guards in place over the
drive shafts, belts and/or couplings, or
other rotating parts. Exposed rotating
parts can catch clothing, fingers, or
tools. causing severe injury to person
nel.
This pump is designed to handle low pH
resistance residues and slurries con
Do not operate the pump against a
PAGE A - 1SAFETY
Page 7
SUPER T SERIESOM-05522
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.
Overheated pumps can cause severe
burns and injury. If overheating of the
pump occurs:
1. Stop the pump immediately.
2. Allow the pump to completely cool.
3. Refer to instructions in this manual
before restarting the pump.
Do not attempt to disengage any part of
an overheated pump unit. Vapor pres
sure within the pump casing can eject
these parts with great force when they
are disengaged. Allow the pump to com
pletely cool before servicing it.
PAGE A - 2 SAFETY
Page 8
INSTALLATION - SECTION B
OM-05522SUPER T SERIES
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 posi
tioned 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 T10A65S-B, Including /FM
PREINSTALLATION INSPECTION
The pump assembly was inspected and tested be
fore shipment from the factory. Before installation,
inspect the pump for damage which may have oc
curred during shipment. Check as follows:
a. Inspect the pump for cracks, dents, damaged
threads, and other obvious damage.
b. Check for and tighten loose attaching hard
ware. Since gaskets tend to shrink after dry
ing, check for loose hardware at mating sur
faces.
c. Carefully read all warnings and cautions con
tained in this manual or affixed to the pump,
and perform all duties indicated. Note the di
rection of rotation indicated on the pump.
PAGE B - 1INSTALLATION
Page 9
OM-05522 SUPER T SERIES
Check that the pump shaft rotates counter
clockwise when facing the impeller.
Only operate this pump in the direction in
dicated by the arrow on the pump body
and on the accompanying decal. Refer to
Rotation in OPERATION, Section C.
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 and power source have been
stored for more than 12 months, some of the
components or lubricants may have ex
ceeded their maximum shelf life. These must
be inspected or replaced to ensure maxi
mum pump service.
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
Pump unit weights will vary depending on the
mounting and drive provided. Check the shipping
tag on the unit packaging for the actual weight, and
use lifting equipment with appropriate capacity.
Drain the pump and remove all customer‐installed
equipment such as suction and discharge hoses
or piping before attempting to lift existing, installed
units.
Mounting
Locate the pump in an accessible place as close as
practical to the liquid being pumped. Level mount
ing is essential for proper operation.
The pump may have to be supported or shimmed
to provide for level operation or to eliminate vibra
tion.
SUCTION AND DISCHARGE PIPING
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
Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Suction and dis
charge hoses and piping must be re
Pump performance is adversely effected by in
creased suction lift, discharge elevation, and fric
tion losses. See the performance curve and oper
ating range shown on Page E‐1 to be sure your
overall application allows 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
PAGE B - 2 INSTALLATION
Page 10
OM-05522SUPER T SERIES
place by tightening the flange bolts and/or cou
plings.
Lines near the pump must be independently sup
ported to avoid strain on the pump which could
cause excessive vibration, decreased bearing life,
and increased shaft and seal wear. If hose‐type
lines are used, they should have adequate support
to secure them when filled with liquid and under
pressure.
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 mm) from the
suction and discharge ports and install the lines.
Installation closer to the pump may result in erratic
readings.
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‐inch (76,2
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
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 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.
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.
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation. Figure 2 shows
PAGE B - 3INSTALLATION
Page 11
OM-05522 SUPER T SERIES
recommended minimum submergence vs. veloc
ity.
NOTE
The pipe submergence required may be reduced
by installing a standard pipe increaser fitting at the
end of the suction line. The larger opening size will
reduce the inlet velocity. Calculate the required
submergence using the following formula based
on the increased opening size (area or diameter).
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
A check valve in the discharge line is normally rec
ommended, but it is not necessary in low dis
charge head applications.
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.
Bypass Lines
Self‐priming pumps are not air compressors. Dur
ing the priming cycle, air from the suction line must
be vented to atmosphere on the discharge side. If
the discharge line is open, this air will be vented
through the discharge. However, if a check valve
has been installed in the discharge line, the dis
PAGE B - 4 INSTALLATION
Page 12
OM-05522SUPER T SERIES
charge side of the pump must be opened to atmos
pheric pressure through a bypass line installed be
tween the pump discharge and the check valve. A
self‐priming centrifugal pump will not prime if
there is sufficient static liquid head to hold the dis
charge check valve closed.
NOTE
The bypass line should be sized so that it does not
affect pump discharge capacity; however, the by
pass line should be at least 1 inch in diameter to
minimize the chance of plugging.
In low discharge head applications (less than 30
feet or 9 meters), it is recommended that the by
pass line be run back to the wet well, and located 6
inches below the water level or cut‐off point of the
low level pump. In some installations, this bypass
line may be terminated with a six‐to‐eight foot
length of 1-1/4 inch I.D. smooth‐bore hose; air
and liquid vented during the priming process will
then agitate the hose and break up any solids,
grease, or other substances likely to cause clog
ging.
A bypass line that is returned to a wet well
must be secured against being drawn into
the pump suction inlet.
It is also recommended that pipe unions be in
stalled at each 90 elbow in a bypass line to ease
disassembly and maintenance.
In high discharge head applications (more than
30 feet), an excessive amount of liquid may be by
passed and forced back to the wet well under the
full working pressure of the pump; this will reduce
overall pumping efficiency. Therefore, it is recom
mended that a Gorman‐Rupp Automatic Air Re
lease Valve be installed in the bypass line.
Gorman‐Rupp Automatic Air Release Valves are
reliable, and require minimum maintenance. See
AUTOMATIC AIR RELEASE VALVE in this section
for information about Gorman‐Rupp Automatic Air
Release Valves. Consult your Gorman‐Rupp dis
tributor, or contact the Gorman‐Rupp Company for
selection of an Automatic Air Release Valve to fit
your application.
If the installation involves a flooded suction such as
a below‐ground lift station, a pipe union and manu
al shut‐off valve may be installed in the bleed line to
allow service of the valve without shutting down the
station, and to eliminate the possibility of flooding.
If a manual shut‐off valve is installed anywhere in
the air release piping, it must be a full‐opening ball
type valve to prevent plugging by solids.
If a manual shut‐off valve is installed in
a bypass line, it must not be left closed
during operation. A closed manual shut‐
off valve may cause a pump which has
lost prime to continue to operate with
out reaching prime, causing dangerous
overheating and possible explosive
rupture of the pump casing. Personnel
could be severely injured.
Allow an over‐heated pump to cool be
fore servicing. Do not remove plates,
covers, gauges, or fittings from an over‐
heated pump. Liquid within the pump
can reach boiling temperatures, and va
por pressure within the pump can cause
parts being disengaged to be ejected
with great force. After the pump cools,
drain the liquid from the pump by re
moving the casing drain plug. Use cau
tion when removing the plug to prevent
injury to personnel from hot liquid.
AUTOMATIC AIR RELEASE VALVE
When properly installed, a Gorman‐Rupp Auto
matic Air Release Valve will permit air to escape
through the bypass line and then close automati
cally when the pump is fully primed and pumping
at full capacity.
Some leakage (1 to 5 gallons [3.8 to 19
PAGE B - 5INSTALLATION
Page 13
OM-05522 SUPER T SERIES
liters] per minute) will occur when the
valve is fully closed. Be sure
the bypass
line is directed back to the wet well or
tank to prevent hazardous spills.
Consult the manual accompanying the Air Release
Valve for additional information on valve installation
and performance.
CLEAN‐OUT
COVER
INSTALL AIR RELEASE VALVE
IN HORIZONTAL POSITION
90 LONG
RADIUS
ELBOW
SUPPORT
BRACKET
BLEED LINE 1”
(25,4 MM) DIA. MIN.
(CUSTOMER FUR
NISHED) DO NOT EX
TEND BELOW PUMP
OFF LIQUID LEVEL
SUCTION
LINE
Air Release Valve Installation
The Automatic Air Release Valve must be inde
pendently mounted in a horizontal position be
tween the pump discharge port and the inlet side of
the discharge check valve (see Figure 3). The inlet
opening in the Air Release Valve is equipped with
standard 1‐inch NPT pipe threads.
DISCHARGE PIPE
DISCHARGE
CHECK VALVE
PUMP DISCHARGE
SELF‐PRIMING
CENTRIFUGAL
PUMP
WET WELL
OR SUMP
Figure 3. Typical Automatic Air Release Valve Installation
Connect the valve outlet to a bleed line which
slopes back to the wet well or sump. The bleed line
must be the same size as the outlet opening or
larger, depending on which Air Release Valve is be
ing used. If piping is used for the bleed line, avoid
the use of elbows whenever possible.
NOTE
For multiple pump installations, it is recommended
that each Air Release Valve be fitted with an inde
pendent bleeder line directed back to the wet well.
If multiple Air Release Valves are installed in a sys
tem, do not direct bleeder lines to a common mani
fold pipe. Contact your Gorman‐Rupp distributor or
the Gorman‐Rupp Company for information about
installation of an Automatic Air Release Valve for
your specific application.
ALIGNMENT
The alignment of the pump and its power source is
critical for trouble‐free mechanical operation. In
either a flexible coupling or V‐belt driven system,
the driver and pump must be mounted so that their
shafts are aligned with and parallel to each other. It
is imperative that alignment be checked after the
pump and piping are installed, and before opera
tion.
NOTE
Check Rotation, Section C, before final alignment
PAGE B - 6 INSTALLATION
Page 14
of the pump.
When mounted at the Gorman‐Rupp factory, driver
and pump are aligned before shipment. Misalign
ment will occur in transit and handling. Pumps
must be checked and realigned before operation.
Before checking alignment, tighten the foundation
bolts. The pump casing feet and/or pedestal feet,
and the driver mounting bolts should also be tightly
secured.
When checking alignment, disconnect
the power source to ensure that the
pump will remain inoperative.
OM-05522SUPER T SERIES
Figure 4A. Aligning Spider‐Type Couplings
Align non‐spider type couplings by using a feeler
gauge or taper gauge between the coupling halves
every 90. The coupling is in alignment when the
hubs are the same distance apart at all points (see
Figure 4B).
Adjusting the alignment in one direction
may alter the alignment in another direc
tion. check each procedure after altering
alignment.
Coupled Drives
When using couplings, the axis of the power
source must be aligned to the axis of the pump
shaft in both the horizontal and vertical planes.
Most couplings require a specific gap or clearance
between the driving and the driven shafts. Refer to
the coupling manufacturer's service literature.
Align spider insert type couplings by using calipers
to measure the dimensions on the circumference
of the outer ends of the coupling hub every 90.
The coupling is in alignment when the hub ends
are the same distance apart at all points (see Fig
ure 4A).
Figure 4B. Aligning Non‐Spider Type Couplings
Check parallel adjustment by laying a straightedge
across both coupling rims at the top, bottom, and
side. When the straightedge rests evenly on both
halves of the coupling, the coupling is in horizontal
parallel alignment. If the coupling is misaligned,
use a feeler gauge between the coupling and the
straightedge to measure the amount of misalign
ment.
Drive Belts
When using drive belts, the power source and the
pump must be parallel. Use a straightedge along
the sides of the pulleys to ensure that the pulleys
are properly aligned (see Figure 4C). In drive sys
tems using two or more belts, make certain that the
belts are a matched set; unmatched sets will cause
accelerated belt wear.
PAGE B - 7INSTALLATION
Page 15
OM-05522 SUPER T SERIES
Do not operate the pump without the
guard in place over the rotating parts.
exposed rotating parts can catch cloth
ing, fingers, or tools, causing severe in
jury to personnel.
DRIVE BELT TENSIONING
MISALIGNED:
SHAFTS
NOT PARALLEL
Figure 4C. Alignment of V‐Belt Driven Pumps
MISALIGNED:
SHAFTS
NOT IN LINE
ALIGNED: SHAFTS
PARALLEL AND
SHEAVES IN LINE
General Rules of Tensioning
For new drive belts, check the tension after 5, 20
and 50 hours of operation and re‐tension as re
quired. Thereafter, check and re‐tension if required
monthly or at 500 hour intervals, whichever comes
first.
Tighten the belts in accordance with the belt manu
facturer's instructions. If the belts are too loose,
they will slip; if the belts are too tight, there will be
excessive power loss and possible bearing failure.
Select pulleys that will match the proper speed ra
tio; overspeeding the pump may damage both
pump and power source.
Ideal drive belt tension is the lowest tension at
which the belt will not slip under peak load condi
tions. Do not over‐tension drive belts. Over‐ten
sioning will shorten both drive belt and bearing life.
Under‐tensioning will cause belt slippage. Always
keep belts free from dirt, grease, oil and other for
eign material which may cause slippage.
PAGE B - 8 INSTALLATION
Page 16
SUPER T SERIES
OM-05522
OPERATION - SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and de
cals attached to the pump.
This pump is designed to handle low pH
resistance residues and slurries con
taining large entrained solids. Do not at
tempt to pump volatile or flammable ma
terials 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 per
formance range shown on the curve (see
Section E, Page 1).
1. The pump is being put into service for the
first time.
2. The pump has not been used for a consider
able length of time.
3. The liquid in the pump casing has evapo
rated.
Once the pump casing has been filled, the pump
will prime and reprime as necessary.
After filling the pump casing, reinstall
and tighten the fill plug. Do not attempt
to operate the pump unless all connect
ing piping is securely installed. Other
wise, liquid in the pump forced out
under pressure could cause injury to
personnel.
To fill the pump, remove the pump casing fill cover
or fill plug in the top of the casing, and add clean
liquid until the casing is filled. Replace the fill cover
or fill plug before operating the pump.
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 is properly lubri
cated (see LUBRICATION in MAINTENANCE
AND REPAIR).
This pump is self‐priming, but the pump should
never be operated unless there is liquid in the
pump casing.
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.
Add liquid to the pump casing when:
STARTING
Consult the operations manual furnished with the
power source.
Rotation
The correct direction of pump rotation is counter
clockwise when facing the impeller. The pump
could be damaged and performance adversely af
fected by incorrect rotation. If pump performance
is not within the specified limits (see the curve on
pages E‐1), check the direction of power source ro
tation before further troubleshooting.
If an electric motor is used to drive the pump, re
move drive belts, couplings, or otherwise discon
nect the pump from the motor before checking mo
tor rotation. Operate the motor independently
while observing the direction of the motor shaft, or
cooling fan.
If rotation is incorrect on a three‐phase motor, have
a qualified electrician interchange any two of the
OPERATION PAGE C - 1
Page 17
SUPER T SERIESOM-05522
three phase wires to change direction. If rotation is
incorrect on a single‐phase motor, consult the liter
ature supplied with the motor for specific instruc
tions.
OPERATION
Lines With a Bypass
If a Gorman‐Rupp Automatic Air Release Valve has
been installed, the valve will automatically open to
allow the pump to prime, and automatically close
after priming is complete (see INSTALLATION for
Air Release Valve operation).
If the bypass line is open, air from the suction line
will be discharged through the bypass line back to
the wet well during the priming cycle. Liquid will
then continue to circulate through the bypass line
while the pump is in operation.
Lines Without a Bypass
pressure, and cause the pump casing to
rupture or explode.
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
160F (71C). Do not apply it at a higher operating
temperature.
Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rup
ture or explode. If overheating occurs, stop the
pump and allow it to cool before servicing it. Refill
the pump casing with cool liquid.
Open all valves in the discharge line and start the
power source. Priming is indicated by a positive
reading on the discharge pressure gauge or by a
quieter operation. The pump may not prime imme
diately because the suction line must first fill with
liquid. If the pump fails to prime within five minutes,
stop it and check the suction line for leaks.
After the pump has been primed, partially close the
discharge line throttling valve in order to fill the line
slowly and guard against excessive shock 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.
Do not operate the pump against a
closed discharge throttling valve for
long periods of time. If operated against
a closed discharge throttling valve,
pump components will deteriorate, and
the liquid could come to a boil, build
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.
As a safeguard against rupture or explosion due to
heat, this pump is equipped with a pressure relief
valve which will open if vapor pressure within the
pump casing reaches a critical point. If overheating
does occur, stop the pump immediately and allow
it to cool before servicing it. Approach any over
heated pump cautiously. It is recommended that
the pressure relief valve assembly be replaced at
each overhaul, or any time the pump casing over
heats and activates the valve. Never replace this
valve with a substitute which has not been speci
fied or provided by the Gorman‐Rupp Company.
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
OPERATIONPAGE C - 2
Page 18
SUPER T SERIES
OM-05522
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.
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.
After stopping the pump, disconnect or lock out
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.
BEARING TEMPERATURE CHECK
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.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
Bearings normally run at higher than ambient tem
peratures because of heat generated by friction.
Temperatures up to 160F (71C) are considered
normal for bearings, and they can operate safely to
at least 180F (82C).
Checking bearing temperatures by hand is inaccu
rate. Bearing temperatures can be measured ac
curately by placing a contact‐type thermometer
against the housing. Record this temperature for
future reference.
A sudden increase in bearing temperature is a
warning that the bearings are at the point of failing
to operate properly. Make certain that the bearing
lubricant is of the proper viscosity and at the cor
rect level (see LUBRICATION in MAINTENANCE
AND REPAIR). Bearing overheating can also be
caused by shaft misalignment and/or excessive vi
bration.
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.
OPERATION PAGE C - 3
Page 19
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. Disconnect or lock out the power
source, or take other action to ensure
that the pump will remain inopera
tive.
3. Allow the pump to completely cool if
overheated.
4. Vent the pump slowly and cautiously.
5. Close the suction and discharge
valves.
6. Check the temperature before open
ing any covers, plates, or plugs.
7. Drain the pump.
OM-05522SUPER T SERIES
Table 1. Trouble Shooting Chart
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO PRIME Not enough liquid in casing.
Suction check valve contaminated or
damaged.
Air leak in suction line.
Lining of suction hose collapsed.
Leaking or worn seal or pump gas
ket.
Suction lift or discharge head too
high.
Strainer clogged.
PUMP STOPS OR FAILS
TO DELIVER RATED
FLOW OR PRESSURE
Air leak in suction line.
Lining of suction hose collapsed.
Add liquid to casing. See PRIMING.
Clean or replace check valve.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leak
ing or worn seal or gasket.
Check piping installation and install
bypass line if needed. See INSTAL
LATION.
Check strainer and clean if neces
sary.
Correct leak.
Replace suction hose.
TROUBLESHOOTING PAGE D - 1
Page 20
OM-05522 SUPER T SERIES
Table 1. Trouble Shooting Chart (cont.)
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP STOPS OR FAILS
TO DELIVER RATED
FLOW OR PRESSURE
(cont.)
PUMP REQUIRES TOO
MUCH POWER
Leaking or worn seal or pump gas
ket.
Strainer clogged.
Suction intake not submerged at
proper level or sump too small.
Impeller or other wearing parts
worn or damaged.
Impeller clogged.
Discharge head too high.
Suction lift too high.
Pump speed too slow.
Pump speed too high.
Discharge head too low.
Check pump vacuum. Replace
leaking or worn seal or gasket.
Check strainer and clean if neces
sary.
Check installation and correct sub
mergence as needed.
Replace worn or damaged parts.
Check that impeller is properly cen
tered and rotates freely.
Free impeller of debris.
Install bypass line.
Measure lift w/vacuum gauge. Re
duce lift and/or friction losses in
suction line.
Check engine output; consult en
gine operation manual.
Check engine output.
Adjust discharge valve.
Liquid solution too thick.
Bearing(s) frozen.
PUMP CLOGS
FREQUENTLY
EXCESSIVE NOISE Cavitation in pump.
Discharge flow too slow.
Suction check valve or foot valve
clogged or binding.
Liquid solution too thick.
Pumping entrained air.
Pump or drive not securely
mounted.
Impeller clogged or damaged.
Dilute if possible.
Disassemble pump and check
bearing(s).
Open discharge valve fully to in
crease flow rate, and run engine at
maximum governed speed.
Clean valve.
Dilute if possible.
Reduce suction lift and/or friction
losses in suction line. Record vacu
um 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.
TROUBLESHOOTINGPAGE D - 2
Page 21
Table 1. Trouble Shooting Chart (cont.)
OM-05522SUPER T SERIES
TROUBLE
BEARINGS RUN TOO
HOT
POSSIBLE CAUSE PROBABLE REMEDY
Bearing temperature is high, but
within limits.
Low or incorrect lubricant.
Suction and discharge lines not
properly supported.
Drive misaligned.
PREVENTIVE MAINTENANCE
Since pump applications are seldom identical, and
pump wear is directly affected by such things as
the abrasive qualities, pressure and temperature
of the liquid being pumped, this section is intended
only to provide general recommendations and
practices for preventive maintenance. Regardless
of the application however, following a routine pre
ventive maintenance schedule will help assure
trouble‐free performance and long life from your
Gorman‐Rupp pump. For specific questions con
cerning your application, contact your Gorman‐
Rupp distributor or the Gorman‐Rupp Company.
Record keeping is an essential component of a
good preventive maintenance program. Changes
in suction and discharge gauge readings (if so
Check bearing temperature regular
ly to monitor any increase.
Check for proper type and level of
lubricant.
Check piping installation for proper
support.
Align drive properly.
equipped) between regularly scheduled inspec
tions can indicate problems that can be corrected
before system damage or catastrophic failure oc
curs. The appearance of wearing parts should also
be documented at each inspection for comparison
as well. Also, if records indicate that a certain part
(such as the seal) fails at approximately the same
duty cycle, the part can be checked and replaced
before failure occurs, reducing unscheduled down
time.
For new applications, a first inspection of wearing
parts at 250 hours will give insight into the wear rate
for your particular application. Subsequent inspec
tions should be performed at the intervals shown
on the chart below. Critical applications should be
inspected more frequently.
TROUBLESHOOTING PAGE D - 3
Page 22
OM-05522 SUPER T SERIES
Preventive Maintenance Schedule
Service Interval*
Item
General Condition (Temperature, Unusual
Noises or Vibrations, Cracks, Leaks,
Loose Hardware, Etc.) I
Pump Performance (Gauges, Speed, Flow) I
Bearing Lubrication I R
Seal Lubrication (And Packing Adjustment,
If So Equipped) I R
V‐Belts (If So Equipped) I
Air Release Valve Plunger Rod (If So Equipped) I C
Front Impeller Clearance (Wear Plate) I
Rear Impeller Clearance (Seal Plate) I
Check Valve I
Pressure Relief Valve (If So Equipped) C
Pump and Driver Alignment I
Shaft Deflection I
Bearings I
Bearing Housing I
Piping I
Driver Lubrication - See Mfgr's Literature
Daily Weekly Monthly Semi‐
Annually
Annually
Legend:
I = Inspect, Clean, Adjust, Repair or Replace as Necessary
C = Clean
R = Replace
* Service interval based on an intermittent duty cycle equal to approximately 4000 hours annually.
Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.
TROUBLESHOOTINGPAGE D - 4
Page 23
SUPER T SERIES
OM-05522
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 T10A65S-B, Including /FM
Based on 70F (21C) clear water at sea level
with minimum suction lift. Since pump installations
are seldom identical, your performance may be dif
ferent due to such factors as viscosity, specific
gravity, elevation, temperature, and impeller trim.
Contact the Gorman‐Rupp Company to verify per
formance or part numbers.
Pump speed and operating condition
If your pump serial number is followed by an “N”,
your pump is NOT a standard production model.
MAINTENANCE & REPAIR PAGE E - 1
points must be within the continuous per
formance range shown on the curve.
Page 24
OM-05522 SUPER T SERIES
PARTS PAGE
SECTION DRAWING
Figure E-1. Pump Model T10A65S-B, Including /FM
MAINTENANCE & REPAIRPAGE E - 2
Page 25
SUPER T SERIES
OM-05522
PARTS LIST
(From S/N 1362929 Up)
Pump Model T10A65S-B, Including /FM
If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact
the Gorman‐Rupp Company to verify part numbers.
ITEM
PART NAME PART
NO.
1 PUMP CASING SEE NOTE BELOW
2 REPAIR ROTATING ASSY 44163-370 --- 1
3 CHK VLV HOUSING ASSY 46421-044 --- 1
4 -CHK VLV BODY 38341-805 17180 1
5 -PIPE PLUG P08 17090 1
6 -CHECK VALVE 46411-081 24010 1
7 -PIVOT CAP 38141-003 17180 2
8 -HEX HD CAPSCREW B0606 17090 2
9 -T‐TYPE LOCK WASHER AK06 17040 2
10 -FLAT WASHER KB08 17090 2
11 SHOULDER TYPE CPLG 25552-212 --- 1
12 ACCESS COVER GSKT 38688-008 19410 1
13 CLAMP BAR 38111-004 17040 2
14 MACHINE BOLT A1014 17090 4
15 CLAMP BAR SCREW 31912-009 17040 2
16 COVER PLATE ASSY 48271-019 --- 1
17 PIPE PLUG P04 17090 1
18 DISCHARGE STICKER 6588BJ --- 1
19 NAME PLATE 38818-040 17040 1
20 DRIVE SCREW BM#04-03 17090 4
21 ROT ADJ SHIM SET 48261-056 --- 6
22 VOLUTE RING 31281-016 17040 1
23 HEX HD CAPSCREW B0806 17090 6
24 LOCK WASHER J08 17090 6
25 HEX HD CAPSCREW B0805 17090 6
26 LOCK WASHER J08 17090 6
27 FILL CVR PLATE ASSY 42111-385 --- 1
28 -COVER PLATE NOT AVAILABLE 1
29 -WARNING PLATE 38816-097 17090 1
30 -DRIVE SCREW BM#04-03 17090 2
31 -GASKET 50G 19210 1
32 CLAMP BAR SCRWE 31912-009 17040 1
33 MACHINE BOLT A1014 17090 2
34 CLAMP BAR 38111-004 17040 1
35 ROTATION DECAL 2613M --- 1
36 BEARING HSG O‐RING 25154-458 --- 1
37 SEAL PLATE O‐RING 25154-458 --- 1
38 WEAR PLATE 38691-826 1718H 1
INDICATES PARTS RECOMMENDED FOR STOCK
NUMBER
MAT'L
CODE
QTY ITEM
NO.
39 PIPE PLUG P08 17090 1
40 SUCTION HEAD GASKET 38682-811 19410 1
41 PIPE PLUG P24 17090 1
42 HEX HD CAPSCREW B1408 17090 2
43 LOCK WASHER J14 17090 2
44 HEX HD CAPSCREW B1207 17090 4
45 LOCK WASHER J12 17090 4
46 PRESSURE RELIEF VALVE 46431-803 --- 1
47 RED PIPE BUSHING AP2008 17090 1
48 PIPE PLUG P20 17090 1
49 SUCTION HEAD 38246-609 17180 1
50 SUCTION STICKER 6588AG --- 1
NOT SHOWN:
OPTIONAL:
PART NAME PART
NUMBER
PRIMING STICKER 6588AH --- 1
LUBE DECAL 38817-084 --- 1
INSTRUCTION LABEL 2613DK --- 1
WARNING DECAL 2613FE --- 1
WARNING DECAL 38816-302 --- 1
G‐R DECAL GR-06 --- 1
INSTRUCTION TAG 38817-011 --- 1
INSTRUCTION TAG 38817-025 --- 1
SUPER T DECAL 38812-089 --- 1
/FM DISCH SPOOL FLNG 46353-783 17040 1
/FM METRIC CHK VLV BODY
38341-808 --- 1
DISASSEMBLY TOOL 12858 --- 1
CASING HEATERS:
-120V 47811-014 --- 1
-240V 47811-015 --- 1
HI PUMP TEMP SHUT‐DOWN KITS:
-145ºF 48313-186 --- 1
-130ºF 48313-256 --- 1
-120ºF 48313-257 --- 1
HT SHUT DOWN 48313-172 --- 1
THERMOSTAT KIT 145ºF
MAT'L
CODE
QTY
INCLUDED WITH DIN 46472-715 --- 1
REPAIR PUMP CASING ASSY
MAINTENANCE & REPAIR PAGE E - 3
Page 26
OM-05522 SUPER T SERIES
SECTION DRAWING
DRIVE END VIEW
Figure E‐2. 44163-370 Repair Rotating Assembly
MAINTENANCE & REPAIRPAGE E - 4
Page 27
SUPER T SERIES
PARTS LIST
44163-370 Repair Rotating Assembly
ITEM
PART NAME PART
NO.
1 IMPELLER 38615-014 1718H 1
2
MECH SEAL ASSY 46512-192 --- 1
3 SEAL END PLATE 38272-228 1718H 1
4 END PLATE GASKET 38684-302 19410 1
BEARING HSG O‐RING 25154-265 --- 1
5
6 HEX HD CAPSCREW B0808 17090 4
7 LOCK WASHER J08 17090 4
8 INBOARD BALL BEARING 23421-461 --- 1
9 BEARING HOUSING 38251-519 17180 1
10 VENTED PLUG 4823A 17040 1
11 VENTED PLUG 4823A 17040 1
12 BEARING CAP OIL SEAL S1917 --- 1
13 BEARING CAP 38322-415 17040 1
14 HEX HD CAPSCREW B0605-1/2 17090 6
15 LOCK WASHER J06 17090 6
16 SHAFT KEY N0612 17040 1
17 IMPELLER SHAFT 38514-568 1706H 1
18 RETAINING RING S215 --- 1
19 OUTBOARD BALL BRG 23422-412 --- 1
20 BEARING CAP O‐RING 25154-252 --- 1
21 INBOARD OIL SEAL S1917 --- 1
22 OUTBOARD OIL SEAL S1917 --- 1
23 IMPELLER WASHER 10278 17090 1
NUMBER
MAT'L
CODE
QTY ITEM
NO.
24 IMPELLER CAPSCREW DM1004S 17090 1
25 SEAL CVTY SIGHT GAGE 26714-021 --- 1
26 BRG CVTY SIGHT GAGE 26714-021 --- 1
27 BRG CVTY DRAIN PLUG P04 17090 1
27A SEAL CVTY DRAIN PLUG P04 17090 1
28 SOC HD PIPE PLUG PC04 17090 1
29 PIPE PLUG P12 17090 1
30 IMP ADJ SHIM SET 5091 17090 REF
31 SEAL END PLATE O‐RING 25154-458 --- 1
32 BEARING HSG O‐RING 25154-458 --- 1
33 SHIPPING PLUG 11495B 15079 2
34 S/N PLATE 2613GG 17020 1
35 DRIVE SCREW BM#04-03 17090 2
NOT SHOWN:
OPTIONAL:
AFLAS SEAL (USE W/SST SLEEVE
OM-05522
PART NAME PART
NUMBER
ROT ASSY SHIM SET 48261-056 --- 6
INSTRUCTION TAG 6588U --- 1
ROTATION DECAL 2613M --- 1
OR SOLID SST SHAFT) 46512-193 --- 1
METAL BELLOWS MECH SEAL ASSY
(KALREZ) 46512-183 --- 1
MAT'L
CODE
QTY
INDICATES PARTS RECOMMENDED FOR STOCK
KALREZ AND VITON ARE PRODUCTS OF THE DUPONT CORP
AFLAS IS A PRODUCT OF THE 3M CORP
MAINTENANCE & REPAIR PAGE E - 5
Page 28
OM-05522 SUPER T SERIES
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de
cals attached to the pump.
This pump requires little service due to its rugged,
minimum‐maintenance design. However, if it be
comes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the sectional views (see Figures E‐1 and E‐2) and
the accompanying parts lists.
This manual will alert personnel to known proce
dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per
sonnel to ensure that only safe, established main
tenance procedures are used, and that any proce
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac
tices.
Many service functions may be performed by
draining the pump and removing the suction head.
If major repair is required, the piping and/or engine
must be disconnected. The following instructions
assume complete disassembly is required.
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.
Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
Cleanout Access And Suction Check Valve
Removal
(Figure E‐1)
Before attempting to service the pump, switch off
the engine ignition and disconnect the positive bat
tery cable to ensure that the pump will remain inop
erative. Close all valves in the suction and dis
charge lines.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Disconnect or lock out the power
source to ensure that the pump will
remain inoperative.
Before attempting to service the pump, remove the
casing drain plug (46) and drain the pump. Clean
and reinstall the drain plug.
For cleanout access, loosen the clamp screws (15)
and clamp bars (13) securing the cleanout cover
(16) to the suction head (49).
To remove the check valve assembly, reach
through the cleanout opening and remove the
hardware (8, 9 and 10) securing the check valve (6)
to the valve body (4) and suction head.
NOTE
An alternate method of removing the check valve
assembly is to remove the hardware securing the
valve body (4) to the suction piping. Disconnect the
MAINTENANCE & REPAIRPAGE E - 6
Page 29
SUPER T SERIES
OM-05522
shoulder‐type coupling (11) and separate the valve
body (4) and check valve from the suction head.
Separate the check valve from the valve body as de
scribed above.
Replace the cleanout cover gasket (12) before re
installing the cover.
Suction Head And Wear Plate Removal
(Figure E‐1)
To remove the suction head, support it with a suit
able hoist and sling and remove the hardware (47,
48, 49 and 50) securing it to the pump casing. Re
move the suction head gasket (45).
If the wear plate (38) does not slide easily from the
casing bore, position a wood or soft metal wedge
between the impeller vanes and the wear plate,
and tap the wedge with a hammer. Turn the impel
ler every 45, repeating the process until the wear
plate is “walked” out of the pump casing.
Rotating Assembly Removal
(Figure E‐2)
Turn
Counterclockwise
Lathe Dog Arm
“V” Notch
Heavy
Bar Stock
Figure E‐3. Loosening Impeller
Immobilize the impeller by wedging a block of
wood between the vanes, and remove the impeller
capscrew and washer (24 and 27). See Figure E‐3,
and install a lathe dog on the drive end of the shaft
(18) with the “V” notch positioned over the shaft
keyway. Use a long piece of bar stock to turn the
shaft in a counterclockwise direction (when facing
the drive end of the shaft). When the impeller
breaks loose, remove the wood block and lathe
dog. Do not fully unscrew the impeller from the
shaft at this time.
(Figure E‐1)
An optional disassembly tool for removing and in
stalling the rotating assembly is available from the
factory. If improvised tools are used, be sure they
are heavy enough for safe use and will not damage
the pump.
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
Remove the inner hardware (30 and 31) from the
The rotating assembly (2, Figure 1) may be re
moved from either side of the casing; however, it is
recommended that it be removed through the suc
tion head opening.
The impeller (1) should be loosened while the rotat
ing assembly is still secured to the pump casing.
Before loosening the impeller, remove the seal cav
ity drain plug (27A) and drain the seal lubricant.
This will prevent the oil in the seal cavity from es
caping as the impeller is loosened. Clean and rein
stall the seal cavity drain plug.
MAINTENANCE & REPAIR PAGE E - 7
casing ring (27). If the removal tool is used, follow
the instructions packaged with it, and pull the rotat
ing assembly from the pump casing (see Figure
E‐4 for removal tool use). If the removal tool is not
used, install three of the inner capscrews in the
jacking holes in the casing ring, and use them to
press the rotating assembly into the pump casing
until the bearing housing is free.
Remove the jacking screws from the casing ring.
Remove the outer hardware (28 and 29) and shim
sets (26). Separate the casing ring from the pump
casing. Tie and tag the shim sets for ease of reas
sembly.
Page 30
OM-05522 SUPER T SERIES
After the rotating assembly is loosened, screw a
5/8‐11 UNC X 16 inch long threaded rod into the
hole in the impeller shaft. Support the drive end of
the shaft with a 1‐13/16” (46 mm) minimum I.D.
piece of pipe or a set of handles as shown in Figure
E‐4, and slide the complete rotating assembly
through the suction head opening. Once free, use
a suitable hoist and sling and attach it to the lifting
eye provided at the top of the bearing housing to
move the rotating assembly to a suitable work area
for further disassembly.
ADD PIPE
AS REQUIRED
Figure E‐4. Rotating Assembly Removal With Tool
Impeller Removal
(Figure E‐2)
Unscrew the impeller from the shaft in a counter
clockwise direction (when facing the impeller). Use
caution when unscrewing the impeller; tension on
the shaft seal spring will be released as the impeller
is removed.
Remove the impeller adjusting shims (30). Tie and
tag the shims or measure and record their thick
ness for ease of reassembly.
Seal Removal And Disassembly
(Figure E‐2)
Remove the seal spring. Apply oil to the shaft and
work it up under the bellows. Slide the rotating por
tion of the seal off the shaft as a unit.
end plate O‐ring (31) and bearing housing O‐rings
(5 and 32).
Position the seal end 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 sta
tionary seat until the seat, O‐rings, and stationary
element can be removed.
If no further disassembly is required, refer to Seal
Installation.
Shaft and Bearing Removal and Disassembly
(Figure E‐2)
When the pump is properly operated and main
tained, the bearing housing should not require dis
assembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.
Use two stiff wires with hooked ends to remove the
stationary portion of the seal.
An alternate method of removing the stationary
portion of the seal is to remove the hardware (6 and
7) and separate the seal end plate (3) and gasket
(4) from the bearing housing (9). Remove the seal
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
MAINTENANCE & REPAIRPAGE E - 8
Page 31
SUPER T SERIES
OM-05522
Remove the bearing housing drain plug (27) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (14 and 15) and remove
the bearing cap (13), O‐ring (20) and oil seal (12)
from the shaft. Press the oil seal from the bearing
cap.
Place a block of wood against the impeller end of
the shaft (17) and tap the shaft and assembled
bearings (8 and 19) 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 compo
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.
bearings. This may scratch the balls or
races and cause premature bearing fail
ure.
Rotate the bearings by hand to check for rough
ness or binding and inspect the bearing balls. If ro
tation is rough or the bearing balls are discolored,
replace the bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the bearing
housing. Replace the bearings, shaft, or bearing
housing if the proper bearing fit is not achieved.
If bearing replacement is required, remove the out
board bearing retaining ring (18) and use a bearing
puller or an arbor (or hydraulic) press to remove
the bearings from the shaft.
Press the oil seals (21 and 22) from the bearing
housing bore.
Shaft and Bearing Reassembly and Installation
(Figures E‐2 and E‐5)
Clean the bearing housing, shaft and all compo
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage as necessary.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.
Inspect the shaft 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.
Position the inboard oil seal (21) in the bearing
housing bore with the lip positioned as shown in
Figure E‐2. Press the oil seal into the housing until
the face is just flush with the machined surface in
side the housing.
Bearings must be kept free of all dirt and
foreign material. Failure to do so will great
ly shorten bearing life. Do not spin dry
MAINTENANCE & REPAIR PAGE E - 9
To prevent damage during removal from
Page 32
OM-05522 SUPER T SERIES
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. Bear
ings should never be heated with a direct flame or
directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thor
oughly filtered.
BALL LOADING
GROOVE POSITIONED
AWAY FROM IMPELLER
LOADING
GROOVE
DIRECTION OF
THRUST
Heat the bearings to a uniform temperature no
higher than 250
F (120C) and slide the bearings
onto the shaft, one at a time, until they are fully
seated. This should be done quickly, in one con
tinuous motion, to prevent the bearings from cool
ing and sticking on the shaft.
Use caution when handling hot bear
ings to prevent burns.
NOTE
Position the inboard bearing (8) on the shaft as indi
cated by the following illustration.
BALL LOADING
GROOVE POSITIONED
TOWARD IMPELLER
LOADING
GROOVE
DIRECTION OF
THRUST
INSTALLATION OF NEW DEPARTURE OR
BCA/FEDERAL MOGAL 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
Figure E‐5. Inboard Bearing Positioning
NOTE
Position the outboard bearing (19) on the shaft with
the retaining ring in the outer race toward the drive
end of 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 an arbor (or hydraulic) press to reposi
tion the bearings against the shaft shoulders.
If heating the bearings is not practical, use a suit
ably sized sleeve and an arbor (or hydraulic) press
to install the bearings on the shaft.
INSTALLATION OF MRC/SKF 5300M OR
FAFNIR 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
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 (19) on the shaft with
the bearing retaining ring (18).
It is recommended that a sleeve be positioned
against the inboard oil seal (21) 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
MAINTENANCE & REPAIRPAGE E - 10
Page 33
SUPER T SERIES
OM-05522
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 as
sembled bearings into the bearing housing until
the retaining ring on the outboard bearing seats
against the bearing housing. Remove the lip seal
sleeve.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Position the outboard oil seal (22) in the bearing
housing with the lip positioned as shown in Figure
E‐2. Press the oil seal into the bearing housing until
it is just flush with the machined surface on the
bearing housing.
Press the oil seal (12) into the bearing cap (13) with
the lip positioned as shown in Figure E‐2. Replace
the bearing cap O‐ring (20) and secure the bearing
cap with the hardware (14 and 15). Be careful not
to damage the oil seal lip on the shaft keyway.
precautions printed on solvent contain
ers.
The seal is not normally reused because wear pat
terns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emer
gency, carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate precision
finished faces; even fingerprints on the faces can
shorten seal life. If necessary, clean the faces with a
non‐oil based solvent and a clean, lint‐free tissue.
Wipe lightly in a concentric pattern to avoid
scratching the faces.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak
age. Inspect the seal area of the impeller shaft, and
replace it if badly damaged. Dress any small
scratches with a fine file or emery cloth. If any com
ponents are worn, replace the complete seal;
never mix old and new seal parts.
Lubricate the bearing housing as indicated in LU
BRICATION at the end of this section.
Seal Reassembly and Installation
(Figures E‐2 and E‐6)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema
ture failure.
If a replacement seal is being used, remove it from
the container and inspect the precision finished
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the bel
lows and stationary seat O‐rings with water or a
very small amount of oil, and apply a drop of light
lubricating oil on the finished faces. Assemble the
seal as follows, (see Figure E‐6).
MAINTENANCE & REPAIR PAGE E - 11
Page 34
OM-05522 SUPER T SERIES
SPRING
IMPELLER
SHIMS
BELLOWS
IMPELLER
RETAINER
DRIVE BAND
ROTATING
ELEMENT
SEAL PLATE
O‐RINGS
IMPELLER
SHAFT
STATIONARY
ELEMENT
STATIONARY
SEAT
Figure E‐6. 46512-192 Seal Assembly
This seal is not designed for operation at
temperatures above 160F (71C). Do not
use at higher operating temperatures.
Lubricate the stationary seat O‐rings with water or
light oil and install them in the stationary seat. In
stall the stationary seal element in the stationary
seat. Press this stationary subassembly into the
front of the seal end plate (3) until it seats squarely
against the bore shoulder. Be careful not to dam
age the seal face.
Install the seal end plate gasket (4) and bearing
housing O‐ring (5). Position the seal end plate and
stationary seat over the shaft so that the cast word
“TOP” is upper most and secure it to the bearing
housing (9) with the hardware (6 and 7). Torque the
hardware to 45 ft. lbs. (540 in. lbs. or 6,2 m. kg.). Be
careful not to damage the stationary element on
the shaft threads.
NOTE
It is recommended that a tapered sleeve be in
stalled over the threads of the impeller shaft to ease
installation of the rotating seal components.
Lubricate the shaft with a small amount of light oil
and slide the rotating subassembly (consisting of
rotating element, bellows and retainer) onto the
shaft. Apply firm, steady pressure on the seal re
tainer and slide it onto the shaft until the seal faces
contact.
Install the seal spring. Lubricate the seal as indi
cated in LUBRICATION after the impeller is in
stalled.
Proceed with Impeller Installation and Adjust
ment.
Impeller Installation and Adjustment
(Figure E‐2)
Inspect the impeller and replace it if cracked or
badly worn. Inspect the impeller and shaft threads
MAINTENANCE & REPAIRPAGE E - 12
Page 35
SUPER T SERIES
OM-05522
for dirt or damage, and clean or dress the threads
as required.
The shaft and impeller threads must be
completely clean before reinstalling the im
peller. 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 im
peller or shaft.
Install the same thickness of impeller adjusting
shims (30) as previously removed. Apply `Never‐
Seez' or equivalent compound to the shaft threads
and screw the impeller onto the shaft until tight. Be
sure the seal spring seats squarely over the shoul
der on the back side of the impeller.
NOTE
At the slightest sign of scraping, immediately back
the impeller off, and check the threads for dirt. Do
not try to force the impeller onto the shaft.
Rotating Assembly Installation
(Figure E‐1)
Install the bearing housing and seal end plate O‐
rings (36 and 37) and lubricate them with light
grease. Ease the rotating assembly into the pump
casing using the installation tool. Be careful not to
damage the O‐rings.
Install the pump casing ring (22) and secure it to
the rotating assembly with the inner hardware (25
and 26).
NOTE
The inner capscrews are 1/4 inch (3,2 mm) shorter
than the outer capscrews.
Install an equal thickness of rotating assembly
shims (21) under the pump casing ring and secure
the ring to the pump casing with the outer hard
ware (23 and 24).
NOTE
If the pump has been completely disassembled, it
is recommended that the wear plate (38) and suc
tion head (49) be reinstalled at this point. The suc
tion head and wear plate must be in place to adjust
the impeller face clearance.
A clearance of .020 to .025 inch (0,51 to 0,64 mm)
between the impeller and the wear plate is recom
mended for maximum pump efficiency. Measure
this clearance and add or remove impeller adjust
ing shims as required.
NOTE
If the rotating assembly has been installed in the
pump casing, this clearance may be measured by
reaching through the priming port with a feeler
gauge.
After the rotating assembly is installed in the pump
casing, coat the threads of the impeller capscrew
(24) with `Never‐Seez' or equivalent compound,
and install the impeller washer (23) and capscrew;
torque the capscrew to 90 ft. lbs. (1080 in. lbs. or
12,4 m. kg.).
A clearance of .020 to .025 inch (0,51 to 0,64 mm)
between the impeller and the wear plate is also rec
ommended for maximum pump efficiency. This
clearance can be obtained by removing an equal
amount of shims from each rotating assembly
shim set (21) until the impeller scrapes against the
wear plate when the shaft is turned by hand. After
the impeller scrapes, add approximately .020 inch
(0,51 mm) of shims to each shim set.
NOTE
An alternate method of adjusting this clearance is to
reach through the suction port with a feeler gauge
and measure the gap. Add or subtract rotating as
sembly shims accordingly.
Suction Head And Wear Plate Installation
(Figure E‐1)
Clean any scale or debris from the contacting sur
faces in the pump casing that might prevent a
MAINTENANCE & REPAIR PAGE E - 13
Page 36
OM-05522 SUPER T SERIES
good seal with the suction head or interfere with
the wear plate (38). Inspect the wear plate for wear
or damage and replace as required. Slide the wear
plate into the pump casing until fully seated.
Replace the suction head gasket (40) and lubricate
it with a generous amount of No. 2 grease. Use a
suitable hoist and sling to position the suction head
against the pump casing, and secure it with the
hardware (42, 43, 44 and 45).
NOTE
To ease future disassembly, apply a film of grease
or `Never‐Seez' on the suction head, or any surface
which contacts the pump casing. This action will re
duce rust and scale build‐up.
Suction Check Valve Installation
(Figure E‐1)
Inspect the check valve components and replace if
badly worn.
Reach through the cleanout cover opening with
the check valve and secure it with the pivot caps (7)
and hardware (8, 9 and 10).
valve, apply `Loctite Pipe Sealant With Teflon No.
592', or equivalent compound, on the relief valve
threads. Position the valve as shown in Figure E‐1,
with the discharge port pointing down.
LUBRICATION
Seal Assembly
(Figure E‐2)
Check the oil level regularly through the sight
gauge (26) and maintain it at the middle of the
gauge. When lubrication is required, remove the
vented plug (10) and add SAE No. 30 non‐deter
gent oil through the hole until the level is at the
middle of the sight gauge.
NOTE
The white reflector in the sight gauge must be posi
tioned horizontally to provide proper drainage.
When lubricating a dry (overhauled) rotating as
sembly, fill the seal cavity with approximately 84
ounces (2,5 liters) of oil (to the center of the sight
gauge).
NOTE
If the check valve body (4) was removed, install the
check valve and secure the body to the suction
head with the shoulder type clamp (11).
PRESSURE RELIEF VALVE
MAINTENANCE
(Figure E‐1)
The suction head is equipped with a pressure relief
valve (46) to provide additional safety for the pump
and operator (refer to Liquid Temperature And
Overheating in OPERATION).
It is recommended that the pressure relief valve as
sembly be replaced at each overhaul, or any time
the pump overheats and activates the valve. Never
replace this valve with a substitute which has not
been specified or provided by the Gorman‐Rupp
Company.
Periodically, the valve should be removed for in
spection and cleaning. When reinstalling the relief
Bearings
(Figure E‐2)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level regu
larly through the sight gauge (27) and maintain it at
the middle of the gauge. When lubrication is re
quired, remove the air vent and bushing (11 and
12) and add SAE No. 30 non‐detergent oil through
the hole until the level is at the middle of the sight
gauge. Do not over‐lubricate. Over‐lubrication can
cause the bearings to over‐heat, resulting in pre
mature bearing failure.
NOTE
The white reflector in the sight gauge must be posi
tioned horizontally to provide proper drainage.
Under normal conditions, drain the bearing hous
ing once each year and refill with approximately 27
ounces (800 ml) of clean oil. Change the oil more
frequently if the pump is operated continuously or
installed in an environment with rapid temperature
change.
MAINTENANCE & REPAIRPAGE E - 14
Page 37
SUPER T SERIES
Monitor the condition of the bearing lubri
cant regularly for evidence of rust or mois
OM-05522
ture condensation. This is especially im
portant in areas where variable hot and
cold temperatures are common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
MAINTENANCE & REPAIR PAGE E - 15
Page 38
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
GORMAN‐RUPP PUMPS
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