Page 1
BC
OM‐01087‐02
April 8, 1981
Rev. B 05‐30‐13
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
0 SERIES PUMP
MODEL
02C3-B
THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO
www.grpumps.com
GORMAN‐RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
e2009 The Gorman‐Rupp Company
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 - 2...............................................................
SUCTION LINES PAGE B - 3...........................................................
Fittings PAGE B - 3...............................................................
Strainers PAGE B - 3..............................................................
Sealing 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..............................................................
Coupled Drives PAGE B - 5........................................................
V‐Belt Drives PAGE B - 5...........................................................
DRIVE BELT TENSIONING PAGE B - 6..................................................
General Rules of Tensioning PAGE B - 6.............................................
GROUNDING PAGE B - 6.............................................................
OPERATION - SECTION C PAGE C - 1......................................
PRIMING PAGE C - 1.................................................................
STARTING PAGE C - 1................................................................
Rotation PAGE C - 1..............................................................
OPERATION PAGE C - 2..............................................................
Lines With a Bypass PAGE C - 2....................................................
Lines Without a Bypass PAGE C - 2.................................................
Leakage PAGE C - 2..............................................................
Liquid Temperature And Overheating PAGE C - 2.....................................
Strainer Check PAGE C - 2.........................................................
Pump Vacuum Check PAGE C - 2..................................................
STOPPING PAGE C - 3................................................................
BEARING TEMPERATURE CHECK PAGE C - 3..........................................
Cold Weather Preservation 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.................
STANDARD PERFORMANCE CURVE PAGE E - 1........................................
PARTS LIST:
Pump Model PAGE E - 3..........................................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E - 4.........................
Pump Disassembly PAGE E - 4.....................................................
Impeller Removal PAGE E - 4......................................................
Seal Removal and Disassembly PAGE E - 5..........................................
Shaft and Bearing Removal and Disassembly PAGE E - 5.............................
Shaft and Bearing Reassembly and Installation PAGE E - 6............................
Seal Reassembly and Installation PAGE E - 7........................................
Impeller Installation PAGE E - 8.....................................................
Pump Reassembly PAGE E - 9.....................................................
Final Pump Assembly PAGE E - 9..................................................
LUBRICATION PAGE E - 9.............................................................
Seal Assembly PAGE E - 9.........................................................
Bearings PAGE E - 9..............................................................
Power Source PAGE E - 9.........................................................
ii
Page 5
0 SERIES
OM-01087
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 an 0 Series, closed impeller, self‐prim
ing centrifugal model, with straight‐in suction, with
out a suction check valve. It is designed to handle
petroleum products or other clean liquids that do
not contain large entrained solids. The basic mate
rial of construction for wetted parts is gray iron, with
cast iron impeller and steel shaft.
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
write:
The Gorman‐Rupp Company
P.O. Box 1217
Mansfield, Ohio 44901-1217
Phone: (419) 755-1011
or:
Gorman‐Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: (519) 631-2870
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.
For information or technical assistance on the pow
er source, contact the power source manufactur
er's local dealer or representative.
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.
Hazards or unsafe practices which COULD
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possi
ble damage which could result from failure
to follow the procedure.
NOTE
Instructions to aid in installation, operation,and
maintenance, or which clarify a procedure.
PAGE I - 1INTRODUCTION
Page 6
0 SERIES
SAFETY ‐ SECTION A
This information applies to 0 Series ba
sic pumps. Gorman‐Rupp has no con
trol over or particular knowledge of the
power source which will be used. Refer
to the manual accompanying the power
source before attempting to begin oper
ation.
This manual will alert personnel to
known procedures which require spe
cial attention, to those which could
damage equipment, and to those which
could be dangerous to personnel. How
ever, this manual cannot possibly antici
pate and provide detailed instructions
and precautions for every situation that
might occur during maintenance of the
unit. Therefore, it is the responsibility of
the owner/maintenance personnel to
ensure that only safe, established main
tenance procedures are used, and that
any procedures not addressed in this
manual are performed only after estab
lishing that neither personal safety nor
pump integrity are compromised by
such practices.
OM-01087
This pump is designed to handle petro
leum products or other clean liquids
that do not contain large entrained sol
ids. Do not attempt to pump liquids
which may damage the pump or endan
ger personnel as a result of pump fail
ure.
This pump is designed to handle petro
leum products or other clean liquids
that do not contain large entrained sol
ids. If the pump is used for handling vol
atile, flammable liquids, all drivers and/
or controls must meet industry stan
dards and codes for use in an explosive
atmosphere. Do not attempt to pump liq
uids for which the pump, driver and/or
controls have not been approved, or
which may damage the pump or endan
ger personnel as a result of pump fail
ure.
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.
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.
If this pump is used for volatile and/or
flammable liquids, be certain proper
safety practices are followed before op
erating or servicing the pump. Provide
adequate ventilation, prohibit smoking,
wear static‐resistant clothing and
shoes. Clean up all fuel spills immedi
ately after occurrence.
Do not install and operate a non‐explo
sion proof motor in an explosive atmo
sphere. Install, connect, and operate
the motor in accordance with the Na
PAGE A - 1SAFETY
Page 7
tional Electric Code and all local codes.
If there is a conflict between the instruc
tions in the manual accompanying the
unit and the National Electric Code or
the applicable local code, the National
or local code shall take precedence.
If this pump is used with volatile and/or
flammable liquids, overheating may
produce dangerous fumes. Take pre
cautions to ensure the area surrounding
the pump is adequately ventilated. Al
low the pump to cool and use extreme
caution when venting the pump, or
when removing covers, plates, plugs, or
fittings.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting.
0 SERIESOM-01087
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.
Overheated pumps can cause severe
burns and injuries. If overheating of the
pump occurs:
1. Stop the pump immediately.
2. Ventilate the area.
3. Allow the pump to completely cool.
4. Check the temperature before
opening any covers, plates,
gauges, or plugs.
5. Vent the pump slowly and cau
tiously.
6. Refer to instructions in this manual
before restarting the pump.
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
After the pump has been installed, make
certain that the pump and all piping or
gaged to be ejected with great force. Al
low the pump to cool before servicing.
hose connections are tight, properly
supported and secure before operation.
Never run this pump backwards. Be cer
tain that rotation is correct before fully
engaging the pump.
Do not operate the pump without the
shields and/or guards in place over the
drive shaft, belts, and/or couplings, or
other rotating parts. Exposed rotating
parts can catch clothing, fingers, or
tools, causing severe injury to person
nel.
PAGE A - 2 SAFETY
Pumps and related equipment must be in
stalled and operated according to all na
tional, local and industry standards.
Page 8
0 SERIES OM-01087
INSTALLATION - SECTION B
Review all SAFETY information in Section A.
Since pump installations are seldom identical, this
section offers only general recommendations and
practices required to inspect, position, and ar
range the pump and piping.
Most of the information pertains to a standard
static lift application where the pump is positioned
above the free level of liquid to be pumped.
If installed in a flooded suction application where
the liquid is supplied to the pump under pressure,
some of the information such as mounting, line
OUTLINE DRAWING
configuration, and priming must be tailored to the
specific application. Since the pressure supplied
to the pump is critical to performance and safety,
be sure to limit the incoming pressure to 50% of the
maximum permissible operating pressure as
shown on the pump performance curve.
For further assistance, contact your Gorman‐Rupp
distributor or the Gorman‐Rupp Company.
Pump Dimensions
See Figure 1 for the approximate physical dimen
sions of this pump.
Figure 1. Pump Model 02C3-B
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 and engine for cracks,
dents, damaged threads, and other obvious
damage.
b. Check for and tighten loose attaching hard
ware. Since gaskets tend to shrink after dry
ing, check for loose hardware at mating sur
faces.
c. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
indicated.
d. Check levels and lubricate as necessary. Re
fer to LUBRICATION in the MAINTENANCE
PAGE B - 1INSTALLATION
Page 9
OM-01087 0 SERIES
AND REPAIR section of this manual and per
form duties as instructed.
e. If the pump and engine have been stored for
more than 12 months, some of the compo
nents or lubricants may have exceeded their
maximum shelf life. These must be inspected
or replaced to ensure maximum pump serv
ice.
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
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting.
Lifting
The pump may have to be supported or shimmed
to provide for level operation or to eliminate vibra
tion.
SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by in
creased suction lift, discharge elevation, and fric
tion losses. Contact the factory to be sure your
overall application allows pump to operate within
the safe operation range.
Materials
Either pipe or hose maybe used for suction and
discharge lines; however, the materials must be
compatible with the liquid being pumped. If hose is
used in suction lines, it must be the rigid‐wall, rein
forced type to prevent collapse under suction. Us
ing piping couplings in suction lines is not recom
mended.
Line Configuration
Keep suction and discharge lines as straight as
possible to minimize friction losses. Make mini
mum use of elbows and fittings, which substan
tially increase friction loss. If elbows are necessary,
use the long‐radius type to minimize friction loss.
Connections to Pump
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.
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.
Before tightening a connecting flange, align it ex
actly with the pump port. Never pull a pipe line into
place by tightening the flange bolts and/or cou
plings.
Lines near the pump must be independently sup
ported to avoid strain on the pump which could
cause excessive vibration, decreased bearing life,
and increased shaft and seal wear. If hose‐type
lines are used, they should have adequate support
to secure them when filled with liquid and under
pressure.
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.
PAGE B - 2 INSTALLATION
Page 10
0 SERIES OM-01087
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
(9,53 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
reduce the inlet velocity. Calculate the required
submergence using the following formula based
on the increased opening size (area or diameter).
PAGE B - 3INSTALLATION
Page 11
OM-01087 0 SERIES
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
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
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.
PAGE B - 4 INSTALLATION
Page 12
0 SERIES OM-01087
When checking alignment, disconnect
the power source to ensure that the
pump will remain inoperative.
Figure 3B. Aligning Non‐Spider Type Couplings
Adjusting the alignment in one direction
may alter the alignment in another direc
tion. check each procedure after altering
alignment.
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 3B).
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 3A).
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.
V‐Belt Drives
When using V‐belt drives, the power source and
the pump must be parallel. Use a straightedge
along the sides of the pulleys to ensure that the pul
leys are properly aligned (see Figure 3C). In drive
systems using two or more belts, make certain that
the belts are a matched set; unmatched sets will
cause accelerated belt wear.
Figure 3A. Aligning Spider‐Type Couplings
MISALIGNED:
SHAFTS
NOT PARALLEL
MISALIGNED:
SHAFTS
NOT IN LINE
ALIGNED: SHAFTS
PARALLEL AND
SHEAVES IN LINE
Figure 3C. Alignment of V‐Belt Driven Pumps
PAGE B - 5INSTALLATION
Page 13
OM-01087 0 SERIES
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; over speeding the pump may damage both
pump and power source.
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
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 (see the following procedure for measuring
belt tension). Thereafter, check and re‐tension if re
quired monthly or at 500 hour intervals, whichever
comes first.
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.
GROUNDING
If the pump is used to handle volatile or flammable
liquids, the unit must be grounded by attaching a
ground wire assembly to a ground rod in order to
eliminate electrostatic build‐up by the liquid being
pumped. Install the ground rod in accordance with
the National Electrical Codes and all local codes.
Be sure the fastening device makes a tight electri
cal connection with the rod and the pump.
Inspect and test the ground wire assembly
for conductivity. Replace a broken or
frayed wire before resuming operation.
PAGE B - 6 INSTALLATION
Page 14
0 SERIES
OM-01087
OPERATION - SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
This pump is designed to handle petro
leum products or other clean liquids
that do not contain large entrained sol
ids. Do not attempt to pump liquids
which may damage the pump or endan
ger personnel as a result of pump fail
ure.
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).
coming liquid to evacuate the air. After the pump
and piping system have completely filled, evacu
ate any remaining air pockets in the pump or suc
tion line by loosening pipe plug or opening bleeder
valves.
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 un
der pressure could cause injury to per
sonnel.
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.
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:
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.
When installed in a flooded suction application,
simply open the system valves and permit the in
STARTING
Rotation
The correct direction of pump rotation is indicated
by an arrow on the pump body, and on the accom
panying decal. If the pump is operated in the
wrong direction, the impeller could become loos
ened from the shaft and aseriously damage the
pump.
If an electric motor is used to drive the pump, re
move V‐belts, couplings, or otherwise disconnect
the pump from the motor before checking motor
rotation. Operate the motor independently while
observing the direction of the motor shaft, or cool
ing fan.
If rotation is incorrect on a three‐phase motor, have
a qualified electrician interchange any two of the
three phase wires to change direction. If rotation is
incorrect on a single‐phase motor, consult the liter
OPERATION PAGE C - 1
Page 15
OM-01087 0 SERIES
ature supplied with the motor for specific instruc
tions.
OPERATION
Lines With a Bypass
Close the discharge throttling valve (if so
equipped) so that the pump will not have to prime
against the weight of the liquid in the discharge
line. Air from the suction line will be discharged
through the bypass line back to the wet well during
the priming cycle. When the pump is fully primed
and liquid is flowing steadily from the bypass line,
open the discharge throttling valve. Liquid will then
continue to circulate through the bypass line while
the pump is in operation.
Lines Without a Bypass
Open all valves in the discharge line and start the
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.
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.
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.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over
heated pump. Vapor pressure within the
pump can cause parts being disen
gaged to be ejected with great force. Al
low the pump to cool before servicing.
Strainer Check
If a suction strainer has been shipped with the
pump or installed by the user, check the strainer
regularly, and clean it as necessary. The strainer
should also be checked if pump flow rate begins to
drop. If a vacuum suction gauge has been in
stalled, monitor and record the readings regularly
to detect strainer blockage.
Never introduce air or steam pressure into the
pump casing or piping to remove a blockage. This
could result in personal injury or damage to the
equipment. If backflushing is absolutely neces
sary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure.
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 (508,0 mm) or more of mercury. If it does
not, check for air leaks in the seal, gasket, or dis
charge valve.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
160_ F (71_C). Do not apply it at a higher operating
temperature.
Open the suction line, and read the vacuum gauge
with the pump primed and at operation speed.
Shut off the pump. The vacuum gauge reading will
immediately drop proportionate to static suction
lift, and should then stabilize. If the vacuum reading
falls off rapidly after stabilization, an air leak exists.
OPERATIONPAGE C - 2
Page 16
0 SERIES
OM-01087
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.
After stopping the pump, lock out or disconnect
the power source to ensure that the pump will re
main inoperative.
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
pressure, and cause the pump casing to
rupture or explode.
BEARING TEMPERATURE CHECK
Bearings normally run at higher than ambient tem
peratures because of heat generated by friction.
Temperatures up to 160_F (71_C) are considered
normal for bearings, and they can operate safely to
at least 180_F (82_C).
Checking bearing temperatures by hand is inaccu
rate. Bearing temperatures can be measured ac
curately by placing a contact‐type thermometer
against the housing. Record this temperature for
future reference.
A sudden increase in bearing temperatures is a
warning that the bearings are at the point of failing
to operate properly. Make certain that the bearing
lubricant is of the proper viscosity and at the cor
rect level (see LUBRICATION in Section E). Bear
ing 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.
Cold Weather Preservation
In below freezing conditions, drain the pump to
prevent damage from freezing. Also, clean out any
solids by flushing with a hose. Operate the pump
for approximately one minute; this will remove any
remaining liquid that could freeze the pump rotat
ing parts. If the pump will be idle for more than a
few hours, or if it has been pumping liquids con
taining a large amount of solids, drain the pump,
and flush it thoroughly with clean water. To prevent
large solids from clogging the drain port and pre
venting the pump from completely draining, insert
a rod or stiff wire in the drain port, and agitate the
liquid during the draining process. Clean out any
remaining solids by flushing with a hose.
OPERATION PAGE C - 3
Page 17
0 SERIES
TROUBLESHOOTING - SECTION D
Review all SAFETY information in Section A.
Before attempting to open or service the
pump:
1. Familiarize yourself with this manual.
2. Disconnect or lock out 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 open
ing any covers, plates, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
OM-01087
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Not enough liquid in casing. Add liquid to casing. See PRIMING.
Suction check valve contaminated Clean or replace check valve.
or damaged.
Air leak in suction line. Correct leak.
Lining of suction hose collapsed. Replace suction hose.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leaking or worn seal or gasket.
Suction lift or discharge head too high. Check piping installation and
install bypass line if needed. See
INSTALLATION.
Strainer clogged. Check strainer and clean if
necessary.
Suction check valve or foot valve Clean valve.
clogged or binding.
Air leak in suction line. Correct leak.
Lining of suction hose collapsed. Replace suction hose.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leaking or worn seal or gasket.
Strainer clogged. Check strainer and clean if
necessary.
TROUBLESHOOTING PAGE D - 1
Page 18
OM-01087
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
0 SERIES
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)
PUMP REQUIRES
TOO MUCH
POWER
PUMP CLOGS
FREQUENTLY
Suction intake not submerged at Check installation and correct
proper level or sump too small. submergence as needed.
Impeller or other wearing parts worn Replace worn or damaged parts.
or damaged. Check that impeller is properly
centered and rotates freely.
Impeller clogged. Free impeller of debris.
Pump speed too slow. Check driver output; check
belts or couplings for slippage.
Suction lift or discharge head too high. Check piping installation and
install bypass line if needed. See
INSTALLATION.
Pump speed too high. Check driver output.
Discharge head too low. Adjust discharge valve.
Liquid solution too thick. Dilute if possible.
Bearing(s) frozen. Disassemble pump and check
bearing(s).
Liquid solution too thick. Dilute if possible.
Discharge flow too slow. Open discharge valve fully to in-
crease flow rate, and run power
source at maximum governed
speed.
EXCESSIVE NOISE
BEARINGS RUN
TOO HOT
Discharge line clogged or restricted; Check discharge lines; straighten
hose kinked. hose.
Suction check valve or foot valve Clean valve.
clogged or binding.
Cavitation in pump. Reduce suction lift and/or friction
losses in suction line. Record
vacuum and pressure gauge
readings and consult local
representative or factory.
Pumping entrained air. Locate and eliminate source of air
bubble.
Pump or drive not securely mounted. Secure mounting hardware.
Impeller clogged or damaged. Clean out debris; replace damaged
parts.
Bearing temperature is high, but Check bearing temperature reguwithin limits. larly to monitor any increase.
Low or incorrect lubricant Check for proper type and level
of lubricant.
Suction and discharge lines not Check piping installation for proper
properly supported. support.
Drive misaligned. Align drive properly.
TROUBLESHOOTINGPAGE D - 2
Page 19
0 SERIES
OM-01087
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
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.
Preventive Maintenance Schedule
Service Interval*
Item
General Condition (Temperature, Unusual
Noises or Vibrations, Cracks, Leaks,
Loose Hardware, Etc.) I
Pump Performance (Gauges, Speed, Flow) I
Bearing Lubrication I R
Seal Lubrication (And Packing Adjustment,
If So Equipped) I R
V‐Belts (If So Equipped) I
Air Release Valve Plunger Rod (If So Equipped) I C
Front Impeller Clearance (Wear Plate) I
Rear Impeller Clearance (Seal Plate) I
Check Valve I
Pressure Relief Valve (If So Equipped) C
Pump and Driver Alignment I
Shaft Deflection I
Bearings I
Bearing Housing I
Piping I
Driver Lubrication - See Mfgr's Literature
Daily Weekly Monthly Semi‐
Annually
Annually
Legend:
I = Inspect, Clean, Adjust, Repair or Replace as Necessary
C = Clean
R = Replace
* Service interval based on an intermittent duty cycle equal to approximately 4000 hours annually.
Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.
TROUBLESHOOTING PAGE D - 3
Page 20
0 SERIES OM-01087
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 02C3-B
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
ference 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 21
PARTS PAGE
0 SERIESOM-01087
SECTION DRAWING
Figure 1. 02C3-B Pump Model Assembly
MAINTENANCE & REPAIRPAGE E - 2
Page 22
0 SERIES OM-01087
PARTS LIST
Pump Model 02C3-B
(From S/N 259749 Up)
If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact
the Gorman‐Rupp Company to verify part numbers.
ITEM
NO.
. 1 PUMP HOUSING See Note Below
2 IMPELLER 5247A 14000 1
3 SEAL ASSEMBLY 25271-821 --- 1
. 4 FILL PLUG ASSY 48271-060 --- 1
5 RD HD MACH SCREW X0402 14990 3
. 6 STUD C0606 15991 8
7 HEX NUT D06 15991 8
8 HEX HD CAPSCREW B0606 15991 4
9 HEX NUT D06 15991 4
10 LOCK WASHER J06 15991 4
11 BEARING S528 --- 1
12 BEARING HOUSING 10671 10010 1
13 BEARING S528 --- 1
14 IMP ADJ SHIM SET 5889 17000 1
15 IMP SHAFT KEY N0303-1/2 15990 1
16 IMPELLER SHAFT 10673 15000 1
17 RETAINING RING S494 --- 1
18 BRG ADJ SHIM SET 2X 17090 1
19 INTERMEDIATE BRCKT 6367 10010 1
20 SLINGER RING 31131-062 19120 1
21 HOUSING GASKET 2958GB 20000 1
22 VANE PLATE 6378 10010 1
. 23 HOUSING DRAIN PLUG P08 15079 1
24 NAME PLATE 38818-020 13990 1
25 DRIVE SCREW BM# 04-03 17000 4
. 26 PIPE PLUG P04 15079 1
27 IMPELLER NUT AT07S 15991 1
28 VANE PLATE O‐RING S1487 --- 1
PART NAME
PART
NUMBER
MAT'L
CODE
QTY
NOT SHOWN:
G‐R DECAL GR-03 --- 1
ROTATION DECAL 2613M --- 1
INSTRUCTION TAG 38817-046 --- 1
SUCTION STICKER 6588AG --- 1
PRIMING STICKER 6588AH --- 1
DISCHARGE STICKER 6588BJ --- 1
INDICATES PARTS RECOMMENDED FOR STOCK
. INCLUDED WITH REPAIR PUMP CASING ASSY 46471-213 --- 1
MAINTENANCE & REPAIR PAGE E - 3
Page 23
0 SERIESOM-01087
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 view (see Figure 1) and the accompa
nying parts list.
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.
Before attempting to service the pump, disconnect
the power source to ensure that the pump will re
main inoperative. Close all valves in the suction
and discharge lines.
For power source disassembly and repair, consult
the literature supplied with the power source, or
contact your local representative.
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.
If this pump is used for volatile and/or
flammable liquids, be certain proper
safety practices are followed before op
erating or servicing the pump. Provide
adequate ventilation, prohibit smoking,
wear static‐resistant clothing and
shoes. Clean up all fuel spills immedi
ately after occurrence.
Pump Disassembly
Before attempting to service the pump, remove the
pump housing drain plug (23) and drain the pump.
Clean and reinstall the drain plug.
To service the impeller (2), seal assembly (3), or va
ne plate (22), the pump housing (1) must be sepa
rated from the intermediate (19).
Remove the suction and discharge lines. Remove
the nuts (7) and use a suitable hoist and sling to
separate the pump housing and gasket (21) from
the intermediate bracket.
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.
3. Allow the pump to completely cool
if overheated.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting.
Impeller Removal
For access to the impeller (2), disengage the
screws (5) and remove the vane plate (22). Immo
bilize the impeller by inserting a bar between the
MAINTENANCE & REPAIRPAGE E - 4
Page 24
OM-010870 SERIES
impeller vanes, being careful not to damage the
vanes. Disengage the impeller nut (27).
Install the shaft key (15). Install a lathe dog on the
drive end of the shaft (16) with the “V” notch posi
tioned over the shaft key.
With the impeller rotation still blocked, see Figure 2
and use a long piece of heavy bar stock to pry
against the arm of the lathe dog in a counterclock
wise direction (when facing the drive end of the
shaft). Use caution not to damage the shaft or key
way. When the impeller breaks loose, remove the
lathe dog, key and wood block.
Turn
Counterclockwise
Lathe Dog Arm
“V” Notch
Heavy
Bar Stock
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
stationary element and seat out of the intermediate
from the back side.
Remove the slinger ring (20).
Shaft and Bearing Removal and Disassembly
When the pump is properly operated and main
tained, the shaft and bearing should not require
disassembly. Disassemble the shaft and bearing
only when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
Use snap ring pliers to remove the bearing retain
ing ring (17) from the bearing housing bore. Re
move the bearing shim set (18); tie and tag the
shims, or measure and record their thickness for
ease of reassembly.
Place a block of wood against the impeller end of
the shaft (16) and tap the shaft and bearings (11
and 13) from the bearing bore.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
Figure 2. Loosening Impeller
Unscrew the impeller from the shaft. Use caution
when removing the impeller; tension on the seal
spring will be released as the impeller is removed.
To prevent damage during removal from
the shaft, it is recommended that the bear
Remove the impeller adjusting shims (14). Tie and
tag the shims or measure and record their thick
ness for ease of reassembly.
ings be cleaned and inspected in place. It
is strongly recommended that the bear
ings be replaced any time the shaft and
bearings are removed.
Seal Removal and Disassembly
Remove the spring retainer and spring. Apply oil to
the shaft and work it up under the rubber bellows.
Slide the rotating portion of the seal off the shaft.
Remove the hardware (8, 9 and 10) securing the in
termediate bracket (19) to the bearing housing
(12). Slide the intermediate bracket off the shaft
and use a suitably sized dowel to press the seal
MAINTENANCE & REPAIR PAGE 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 and replace as necessary.
Most cleaning solvents are toxic and
Page 25
0 SERIESOM-01087
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.
The bearings must be kept free of all dirt
and foreign material. Failure to do so will
greatly shorten bearing life. Do not spin
dry bearings. This may scratch the balls or
races and cause premature bearing fail
ure.
Rotate the bearings by hand to check for rough
ness or binding. If rotation is rough, 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, use a suitable
puller or an arbor (or hydraulic) press to remove
the bearings from the impeller shaft.
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.
Heat the bearings to a uniform temperature no
higher than 250_F (120_C), and slide the bearings
onto the shaft one at a time until they are fully
seated against the shaft shoulders. This should be
done quickly, in one continuous motion, to prevent
the bearings from cooling and sticking on the shaft.
Use caution when handling hot bear
ings to prevent burns.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
out of position in shrinking. If movement has oc
curred, use a suitably sized sleeve and a press to
reposition the bearings.
If heating the bearings is not practical, use a suit
ably sized sleeve and an arbor (or hydraulic) press
to install the bearings onto the shaft.
Shaft and Bearing Reassembly and Installation
Clean and inspect the bearings as indicated in
Shaft and Bearing Removal and Disassembly.
To prevent damage during removal from
the shaft, it is recommended that the bear
ings be cleaned and inspected in place. It
is strongly recommended that the bear
ings be replaced any time the shaft and
bearings are removed.
Inspect the shaft for distortion, nicks or scratches
or damage. Dress small nicks and burrs with a fine
file or emery cloth. Replace the shaft if defective.
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.
Slide the shaft and assembled bearings into the
bearing housing until the inboard bearing is fully
seated against the bore shoulder.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
MAINTENANCE & REPAIRPAGE E - 6
Page 26
OM-010870 SERIES
Install the same thickness of bearing adjusting
shims (18) as previously removed. Reinstall the re
taining ring (17) and check the shaft endplay.
NOTE
Shaft endplay should be .002 to .010 inch (0,05 mm
to 0,25 mm). Add or remove bearing adjusting
shims to obtain this endplay.
Install the slinger ring (20) and shaft key (15).
Seal Reassembly and Installation
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
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. If any components are worn, replace the com
plete seal; never mix old and new seal parts.
If a replacement seal is being used, remove it from
the container and inspect the precision finished
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the bel
lows with water or a very small amount of light lu
bricating oil, and apply a drop of light lubricating oil
on the finished faces. Assemble the seal as follows
(see Figure 3).
MAINTENANCE & REPAIR PAGE E - 7
Page 27
0 SERIESOM-01087
SPRING
RETAINER
IMPELLER
IMPELLER
SHAFT
IMPELLER
SHIMS
BELLOWS
SPRING
DRIVE BAND
RETAINER
BEARING
HOUSING
ROTATING
ELEMENT
STATIONARY
ELEMENT
STATIONARY
SEAT
Figure 3. Seal Assembly
This seal is not designed for operation at
temperatures above 160_F (71_C). Do not
use at higher operating temperatures.
Lay the intermediate bracket (19) on a flat surface
with the impeller side facing up. Subassemble the
stationary element into the stationary seat and use
even pressure to press this subassembly into the
intermediate bracket until it seats squarely against
the shoulder bore.
Install the slinger ring (20) on the impeller shaft.
Carefully slide the assembled intermediate and
stationary portion of the seal over the shaft. Secure
the intermediate to the bearing housing with the
hardware (8, 9 and 10).
Subassemble the rotating element into the retainer
and bellows. Lubricate the I.D. of the bellows with
water and slide this subassembly onto the shaft
until the polished faces contact. Install the seal
spring and spring retainer.
Impeller Installation
Inspect the impeller and replace it if cracked or
badly worn.
For maximum pump efficiency, the impeller should
be centered within the vane plate scroll.
To verify the impeller positioning, measure the
vane plate and impeller as shown in Figure 4. Use
these measurements to calculate the required im
peller location (dimension E). Add or remove im
peller adjusting shims (14) until dimension E is ob
tained.
MAINTENANCE & REPAIRPAGE E - 8
Page 28
B
2
AB
OM-010870 SERIES
CD
D
2
E
Step 2Step 1 Step 3
B
+
A
2
Figure 4. Centering Impeller Within Vane Plate Scroll
Install the correct thickness of impeller shims (14)
and screw the impeller onto the shaft until fully
seated.
Apply “Loctite Threadlocker No. 242” or equivalent
compound to the impeller shaft threads and se
cure the impeller with the impeller nut (27). Torque
the nut to 30 ft. lbs. (360 in lbs. or 4,15 m. kg.).
Clean all of the old adhesive from the vane plate
and its mating surface on the intermediate. Apply a
thin film of “3M Gasket Adhesive No. 847” or equiv
alent compound to the vane plate and secure the
vane plate to the intermediate bracket using the
machine screws (5).
NOTE
After the vane plate has been installed, check for
free shaft rotation. Correct any scraping binding
before further reassembly.
-
D
+
C
2
Final Pump Assembly
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Fill the pump casing with clean liquid. Reinstall the
fill plug (4) and tighten it.
Refer to OPERATION, Section C, before putting
the pump back into service.
=
E
LUBRICATION
Seal Assembly
The seal assembly is lubricated by the medium be
ing pumped and no additional lubrication is re
quired.
Bearings
Pump Reassembly
Install the vane plate O‐ring (29) onto the vane
plate. Install the casing gasket (22). Ease the pump
housing over the vane plate. Be careful not to
damage the O‐ring. Secure the housing to the in
termediate bracket with the nuts (7).
MAINTENANCE & REPAIR PAGE E - 9
The bearings in this pump are lubricated from the
manufacturer and permanently sealed. No addi
tional lubrication is required.
Power Source
Consult the literature supplied with the power
source, or contact your local representative.
Page 29
For U.S. and International Warranty Information,
Please Visit www.grpumps.com/warranty
or call:
U.S.: 419-755-1280
International: +1-419-755-1352
For Canadian Warranty Information,
Please Visit www.grcanada.com/warranty
or call:
519-631-2870
THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO
GORMAN‐RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA
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