Page 1
Q
OM-05688-OP01
July 20, 2004
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH P ARTS LIST
0SERIESPUMP
MODEL
06C1-GAR
THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO
www.gormanrupp.com
GORMAN-RUPP OF CANADA LIMITED
eCopyright by the Go rman-Rupp Company
D ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
Page 2
TABLE OF CONTENTS
INTRODUCTION PAGE I --- 1.................................................
SAFETY - SECTION A PAGE A --- 1............................................
I N S T A L L A T I O N --- S E C T I O N B PA G E B --- 1....................................
Pump Dimensions PAGE B --- 1.....................................................
PREINSTALLATION INSPECTION PAGE B --- 1............................................
VEHICLEREQUIREMENTS PAGEB---2.................................................
Ta n k P r e p a r a t i o n PA G E B --- 2.......................................................
P O S I T I O N I N G P U M P PA G E B --- 2.......................................................
Lifting PA G E B --- 2.................................................................
ALIGNMENT PA G E B --- 3..............................................................
SUCTION AND DISCHARGE PIPING PAGE B --- 4.........................................
Typical System Installation PAGE B --- 4..............................................
Piping PA G E B --- 5................................................................
Sealing PA G E B --- 5...............................................................
Valves PA G E B --- 5................................................................
Siphoning PA G E B --- 6.............................................................
Eductors PA G E B --- 6..............................................................
O P E R A T I O N --- S E C T I O N C PA G E C --- 1......................................
PRIMING PA G E C --- 1.................................................................
GROUNDING PA G E C --- 1.............................................................
STARTING PA G E C --- 1................................................................
Rotation PA G E C --- 1..............................................................
Drive PA G E C --- 2.................................................................
OPERATION PA G E C --- 2..............................................................
Leakage PA G E C --- 2..............................................................
Liquid Temperature And Overheating PAGE C --- 2.....................................
Strainer Check PAGE C --- 2.........................................................
Pump Vacuum Check PAGE C --- 2..................................................
STOPPING PA G E C --- 3................................................................
Cold Weather Preservation PAGE C --- 3..............................................
GEARBOX TEMPERATURE CHECK PAGE C --- 3..........................................
T R O U B L E S H O O T I N G --- S E C T I O N D PA G E D --- 1..............................
PUMP MAINTENANCE AND REPAIR - SECTION E PAGE E --- 1.................
P E R F O R M A N C E C U R V E PA G E E --- 1...................................................
PARTS LIST:
P u m p M o d e l PA G E E --- 3..........................................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E --- 4.........................
Removing Pump And Gearbox PAGE E --- 4...........................................
Suction Head And Wear Ring Removal PAGE E --- 5...................................
Impeller And Casing Wear Ring Removal PAGE E --- 5.................................
Seal Removal And Disassembly PAGE E --- 5.........................................
i
Page 3
TABLE OF CONTENTS
(continued)
Pump Casing Removal PAGE E --- 5.................................................
PUMP AND SEAL REASSEMBLY PAGE E --- 5............................................
Pump Casing And Wear Ring Installation PAGE E --- 6..................................
Seal Reassembly And Installation P AGE E -- - 6........................................
Impeller Installation P AGE E -- - 8.....................................................
Suction Head And Wear Ring Installation PAGE E --- 9..................................
Installing Pump And Gearbox PAGE E - -- 9............................................
GEARBOX DISASSEMBLY PAGE E --- 9..................................................
GEARBOX REASSEMBLY PAGE E --- 10...................................................
LUBRICATION PA G E E --- 1 1.............................................................
Seal Assembly PAGE E --- 11.........................................................
Gearbox PA G E E --- 1 1..............................................................
ii
Page 4
0SERIES
OM-- 05688
INTRODUCTION
This Installation, Operation, and Maintenance
manual is designed to help you achieve the best
performance and longest life from your GormanRupp pump.
This manual covers an 0 Series, enclosed impeller,
centrifugal model pump, with straight-in suction,
without a suction check valve. The pump is designed for vehicular mounting in petroleum service. The basic material of construction for w etted
The Gorman-Rupp Company
P.O. Box 1217
Mansfield, Ohio 44901--1217
Phone: (419) 755 --1011
Gorman-Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: (519) 631 --2870
parts for the pump is aluminum, with cast iron
wearing parts.
The p ump is close-coupled to an integral 1900
RPM gearbox speed increaser with a 2.19:1 ratio.
Power is transmitted to the gearbox through a customer-installed universal shaft assembly.
If there are any questions regarding the pump or
its application which are not covered in this manual or in other literature accompanying this unit,
please contact your Gorman-Rupp distributor, or:
or:
For information or technical assistance on the power source, contact the power source manufacturer’s local
dealer or representative.
The following are used t o alert maintenance personnel to procedures which require special attention, to
those which could damage equipment, and to those which could be dangerous to personnel:
Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure required and the injury which will result
from failure to follow the procedure.
Hazards or unsafepractices whichCOULD
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possible damage which could result from failure
to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.
NOTE
the procedure required and the injury
which could result from failure to follow
the procedure.
PAGE I -- 1INTRODUCTION
Page 5
0SERIES OM-- 05688
SAFETY --- SECTION A
This information applies to 0 Series
power take-off driven pumps. Refer to
the manual accompanying the vehicle
before attempting to begin operation.
Before attempting to open or servic e the
pump:
1. Familiarize yourself with this manual.
2. Switch off the vehicle ignition and
remove the key to ensure that the
pump will remain inoperative.
3. Allow the pump to cool if overheated.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
erating or servicing the pump. Provide
adequate ventilation, prohibit smoking,
wear static-resistant clothing and
shoes. Clean up all fuel spills immediately after occurrence.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or damage to equi pment. Suction and discharge hoses and piping must be removed from the pump before lifting.
After the pump has been positioned,
make certain that the pump and all piping connecti ons are tight, properly sup ported and secure before operation.
This pump is designed for vehicular
mounting in petroleum servic e . Do not
attempt to pump corrosive materials, or
any liquids which may damage the
pump or endanger personnel as a result
of pump failure.
If thi s pump is used with volatile and/or
flammableliquids,becertainproper
safety practices are followed before op-
Do not operate the pump without the
guards in place over the rotating parts.
Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel.
Do not operate the pump against a
closed discharge valve for long periods
oftime.Ifoperatedagainstacloseddischarge valve, pump components will
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
PAGE A -- 1SAFETY
Page 6
OM-- 05688
If thi s 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 ade quately ventilated. Allow the pump to cool and use extre m e
caution when venting the pump, or
when removing covers, plates, plugs, or
fitting.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an overheated pump. Vapor pressure within the
pump can cause parts being disengaged to be ejected with great force. Allow the pump to cool before servicing.
0SERIES
the pump. Be sure the pump is properly
reinstalled and secure before operation.
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. Limit the maximum input
speed and operation range as indicated
on the performance curve on Page E-1.
The gearbox provided on this pump is
designed for operation at 1900 RPM
maximum i nput speed. If operated at a
higher RPM, pump components may be
destroyed.
After the vehicle is positioned for pump
maintenance, block t he wheels and set
the emergency brake before attempting
to disconnect the drive shaft or remove
Never run the pump dry of pumping medium. There must be a supply of liquid to
the pump at all times to prevent destruction
of the shaft seal faces.
PAGE A -- 2 SAFETY
Page 7
INSTALLATION --- SECTION B
OM-- 056880SERIES
Review all SAFETY information in Section A.
Since pump installations are seldom identical, this
section offers only general recommendations and
practices required to inspect, position, and arrange the pump and piping.
Donottestoroperateyourpumpandintegral gearbox before reading the installation and operation instructions in
this manual.
These pumps are self-priming centrifugal models
with an integral gearbox assembly. Each of the
pumps covered by this manual is designed for vehicular mounting in petroleum service, where the
liquid is supplied to the pump under pressure.
Since the pressure supplied to the pump is critical
OUTLINE DRAWING
to performance and safety, be sure to limit the incoming pressure to 50% of the maximum permissible operating pressure as shown on the pump performance curve (see Section E , Page 1).
The integral gearbox is designed to be driven
through the vehicle transfer case by a customersupplied universal shaft assembly. The pump casing or gearbox may be rotated in 45_ increments to
assist with alignment with the vehicle tank; however, if the gearbox is to be rotated, some modifications must be made to the gearbox to ensure adequate lubrication. Consult the factory for details.
For further assistance, contact your Gorman-Rupp
distributor or t he Gorman-Rupp Company.
Pump Dimensions
SeeFigure1fortheapproximatephysicaldimensionsofthispump.
Figure 1. Pump Model 06C1-- GAR
PAGE B -- 1INSTALLATION
Page 8
OM-- 05688 0SERIES
PREINSTALLATION INSPECTION
The pump assembly was inspected and tested before shipment from the factory. Before installation,
inspect the pump for damage which may have occurred during shipment. Check as follows:
a. Inspect the pump and gearbox for cracks,
dents, damaged threads, and other obvious
damage.
b. Check for and tighten loose attaching hard-
ware. Since gaskets tend to shrink after drying, check for loose hardware at mating sur faces.
c. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
indicated.Note the direction of rotation indicated on the pump. Check that the pump
shaft rotates in the required direction.
Only operate this pump in the direction indicated on the pump body and/or the accompanying decal. Reverse rotation of the
shaft will adversely effect pump performance, and the pump and/or gearbox could
be seriously damaged.
d. Check levels and lubricate as necessary. Re-
fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and perform duties as instructed.
e. If the pump and gearbox have been stored for
more than 12 months, some of the components or lubricants may have exceeded their
maximum shelf life. These must be inspected
or replaced to ensure maximum pump service.
If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman-Rupp distributor or the factory to determine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
VEHICLE REQUIREMENTS
The following instructions apply equally to new installations, rebuilds or retrofits.
Tank Preparation
It is essential that any tank scale, dirt, or other foreign material be removed from the tank and piping
prior to pump installation. Failure to do so could result in clogging or damage to the pump.
Damage to the pump resulting from debris
in the suction line will not be covered by
the pump warranty.
Before connecting the suction and discharge piping, carefully check the storage
tank and piping for construction debris
such as nuts, bolts, wire, weld slag, and
other foreign material. Install a commercially available 80 mesh screen in the suction line to prevent debris from entering the
pump.
POSITIONING PUMP
Lifting
Pump unit weights w ill 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.
Thepumpassemblycanbeseriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Due to the confined mounting location,
specialized equipment such as a transmission jack with custom brackets should be
PAGE B -- 2 INSTALLATION
Page 9
OM-- 056880SERIES
used to lift and position the pump and
gearbox.
NOTE
If the gearbox is rotated out of the standard position
shown in Figure 1, the oil fill and drain plugs must
be relocated. The magnetic drain plug must be relocated to the lowest port, and the oil vent and elbow must be relocated to the highest port. Consult
the factory for correct positioning of the fill plug to
provide for proper lubrication of the gearbox.
ALIGNMENT
When installing and/or alig ni ng universal shaft assemblies, switch off the vehicle ignition and remove the key to ensure that the pump will remain inoperative.
The alignment of the pump and its power source is
critical for trouble-free mechanical operation. Before checking alignment, make sure that the gearbox mounting bolts are tight.
When connecting the universal joint drive shaft assembly to a PTO unit, install, support, and align t he
drive shaft in accordance with the manufacturer’s
instructions. The pump and the drive power source
are generally positioned so that shaft centerlines
are parallel and horizontal. The maximum operating angle should not exceed 15 degrees (see Figure 2).
Check the direction of rotation of the PTO unit before starting the pump. The drive shaft must rotate
in the direction shown on the body of the pump,
gearbox, and/or decals, tags, and labels.
Do not operate the pump without the
guard in place over the rotating parts.
Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel.
After the power take-off has been aligned, block
the wheels of the external power source, engage
the braking system, or t ak e other precautions to
ensure that the power source will remain stationary. Block the wheels on the unit to prevent creeping.
PAGE B -- 3INSTALLATION
Page 10
OM-- 05688 0SERIES
LUGS MUST BE IN LINE, REGARDLESS
OF OPERATING ANGLE SHOWN BELOW
LUG ALIGNMENT
SHAFTS PARALLEL, ANGLES EQUAL
SHAFTS NOT PARALLEL, ANGLES EQUAL
Figure 2. Proper Installation And Alignment of Universal Assembly
SUCTION AND DISCHARGE PIPING
Typical System Installation
Tank filling and dispensing operations require a
system utilizing flow-directing (FDF) valves, educ-
tors, related piping and safety accessories. Some
oftheaccessoriesareavailablefromGormanRupp as optional equipment.
Refer to Figures 3 and 4 for illustrations of typical
piping systems for tank filling and dispensing.
PAGE B -- 4 INSTALLATION
Page 11
OM-- 056880SERIES
SCHEMATIC SYSTEM USING EDUCTOR FOR DISPENSING AND FILLING
Figure 3. Typical System Installation Using Educator For Filling And Dispensing
SCHEMATIC SYSTEM USING PUMP FOR DISPENSING AND FILLING
Figure 4. Typical Installation Using Pump For Filling And Dispensing
Piping
All piping material must be compatible with the liquid being pumped. If hose is used in suction lines,
it must be the rigid-wall, reinforced type to prevent
collapse under suction. Using piping couplings in
suction lines is not recommended.
A suction strainer was not furnished with this pump
since it is not designed to handle liquids containing
solids. However, to protect the pump from accidental damage a commercially available 80 mesh
screen should be installed in the suction line. Make
certain that the total open area of the screen is at
least three or four times the cross section of the
PAGE B -- 5INSTALLATION
Page 12
OM-- 05688 0SERIES
suction line to ensure an adequate supply of liquid
to the pump.
Damage to the pump resulting from debris
in the suction line will not be covered by
the pump warranty.
Before connecting the suction and discharge piping, carefully check the storage
tank and piping for construction debris
such as nuts, bolts, wire, weld slag, and
other foreign material. Install a commercially available 80 mesh screen in the suction line to prevent debris from entering the
pump.
If a throttling valve is desired in the discharge line,
useavalveaslargeasthelargestpipetominimize
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 installed in the discharge line to protect the pump
from excessive shock pressure and reverse rotation when it is stopped.
Sealing
Since even a slight leak will affect priming, head,
and capacity, especially when operating with a
high suction lift, all connections in the suction line
should be sealed with pipe dope to ensure an airtight seal. Follow the sealant manufacturer’s recommendations when selecting and applying the
pie dope.
Val ves
Gorman-Rupp manufactures several sizes of flowdiverting (FDF) valves for use in truck-mounted
pumping applications. The valves are designed to
reverse the flow of liquid with only the turn of a handle. This allows the same pump to fill or dispense
from the tank.
TheFDFvalveisdesignedfordirecting
flow only. it will not serve as a positive shutoff or throttling valve.
SeeFigure5illustratingthetheoryofoperationfor
a typical FDF valve. Consult the factory for further
assistance or other sizes.
DISPENSING
POSITION
DISPENSE FILLTOP VIEW
Figure 5. FDF Valve Theory of Operation
When the center web of the valve is aligned with the
larger ports (filling position), the flow passes
straight through. When the handle is turned to the
PAGE B -- 6 INSTALLATION
dispensing position, the web blocks the straight
flow and opens two paths of flow through the larger
ports to the smaller ports.
FILL
POSITION
Page 13
OM-- 056880SERIES
Siphoning
Do not terminate the discharge line at a level lower
than that of the liquid being pumped unless a siphon breaker is used in the line. Otherwise, a siphoning action causing damage to the pump
could result.
Eductors
An eductor may be used in conjunction with an
FDF valve to increase dispensing rates and improve e fficiency. An eductor may also be used to
collapse the tank service hose after the tank has
been filled or emptied.
Contact the Gorman -Rupp Company or an authorized distributor for specifications and performance
data on eductors or FDF valves.
PAGE B -- 7INSTALLATION
Page 14
0SERIES
OM-- 05688
OPERATION --- SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
This pump is designed for vehicular
mounting in petroleum servic e . Do not
attempt to pump corrosive materials, or
any liquids which may damage the
pump or endanger personnel as a result
of pump failure.
The gearbox provided on this pump is
designed for operation at 1900 RPM
maximum i nput speed. If operated at a
higher RPM, pump components may be
destroyed.
PRIMING
Install the pump and piping as described in INSTALLATION. Make sure that the piping connec-
tions are tight, and that the pump is securely
mounted. Check that the pump is properly lubricated (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.
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 considerable length of time.
3. The liquid in t he pump casing has evaporated.
When installed in a flooded suction application,
simply open the system valves and permit the incoming liquid to evacuate the air. After the pump
and piping system have completely filled, evacuate any remaining air pockets in the pump or suction line by loosening a pipe plug or opening bleeder valves.
Once the pump casing has been filled, the pump
will prime and reprime as necessary.
GROUNDING
To eliminate electrostatic build-up when pumping
petroleum products, the pump must be grounded
by attaching a ground wire to a ground rod. Install
the ground rod in accordance with the National
Electric Code and all local codes. Be sure the
clamp or fastener has made a tight electrical connection with the rod.
Inspect and test the ground wire assembly
for conductivity. Replace broken or frayed
wire before resuming operation.
STARTING
Consult the operations manual furnished w ith the
vehicle.
Never operate this pump unless there is
Rotation
liquid in the pump casing. The pump will
not prime when dry. Extended operation of
a dry pump will destroy the seal assembly.
OPERATION PAGE C -- 1
The correct direction of pump rotation is clockwise
when facing the input drive shaft. The pump could
Page 15
OM-- 05688 0SERIES
be damaged and performance adversely affected
by incorrect rotation. If pump performance is not
within the specified limits (see the curve on Page
E---1), check the direction of rotation before further
troubleshooting.
Drive
This pump is designed for operation with a power
take-off unit coupled to the drive shaft on the gearbox. The gearbox as sembly has a ratio of 2.19:1,
and is designed for operation at a maximum input
speed of 1900 RPM . Do not operate at a higher input speed.
The gearbox provided on this pump is
designed for operation at 1900 RPM
maximum i nput speed. If operated at a
higher RPM, pump components may be
destroyed.
Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rupture or explode. If overheating occurs, stop the
pump and allow it to cool before servicing it. Refill
the pump casing with cool liquid.
Allow an overheated pump to cool before servicing. Do not remove plates,
covers, gauges, pipe plugs, or fittings
from an overheated pump. Liquid within
the pump can reach boiling temperatures, and vapor 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 removing the casing drain
plug. Use caution when removing the
plug to prevent injury to personnel from
hot liquid.
OPERATION
Partially open the discharge throttling valve so that
the discharge line fills slowly to prevent damage to
piping, gaskets, and other devices in the line which
could be affected by shock resulting from rapid filling of the line. When the discharge line is completely filled, adjust the discharge throttling valve to
the desired flow rate.
Leakage
No leakage should be visible at pump mating surfaces, or at pump connections or fittings. Keep all
line connections and fittings tight to maintain maximum pump efficiency.
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.
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 installed, 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 necessary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure shown
onthepumpperformancecurve(seeSectionE,
Page 1).
Pump V acuum Check
Since this pump does not have a suction check
valve, the discharge line must be fitted with a check
valve if a pump vacuum reading is to be taken.
With the pump inoperative, install a vacuum gauge
in the system, using pipe dope on the threads.
OPERATIONPAGE C -- 2
Page 16
0SERIES
OM-- 05688
Block the suction line and start the pump. At operating speed the pump should pull a vacuum of 15
to 17 inches (381 to 432 mm) or more of mercury
when pumping petroleum. If it does not, check for
air leaks in the seal, gasket, or discharge valve.
Open the suction line, and read the vacuum gauge
with the pump primed and at operation speed.
Shut off the pump. The vacuum gauge reading will
immediately drop proportionate to static suction
lift, and should then stabilize. If the vacuum reading
falls off rapidly after stabilization, an air leak exists.
Before checking for the source of the leak, check
the point of installation of the vacuum gauge.
NOTE
Petroleum products are very sensitive to changes
in temperature. Warmer temperatures elevate the
product vapor pressure, resulting in low vacuum
readings. Do not mistake temperature problems for
faulty pump installation or performance.
After stopping the pump, switch off the vehicle ignition and remove the key to ensure that the pump
will remain inoperative.
Cold Weather Preservation
If the application of this pump is limited to petroleum products, normal freezing conditions will not
damage the pump. However, during extremely severe conditions care should be exercised during
start-up, especially if the pump has been idle for
more than a few hours.
GEARBOX TEMPERATURE CHECK
The gearbox runs higher than ambient temperatures because of heat generated by friction. Temperatures of approximately 200_F(93_C) are con-
sidered normal, and can operate intermittently at
250_F (121_C).
STOPPING
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
On engine driven pumps, reduce the throttle
speed slowly and allow the engine to idle briefly before stopping.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
Checking gearbox temperatures by hand is inaccurate. Place a contact-type thermometer against
the housing and record this temperature for future
reference.
A sudden increase in gearbox temperature is a
warning that the bearings are at the point of failing.
Make certain that the bearing lubricant is of the
proper viscosity and at the correct level (see LU-
BRICATION in Section E). Bearing overheating
can also be caused by shaft misalignment and/or
excessive vibration.
When pumps are first started, the bearings may
seem to run at temperatures above normal. Continued operation should bring the temperatures
down to normal levels within 20 minutes or less.
OPERATION PAGE C -- 3
Page 17
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. Switch off the vehicle ignition and remove the key, or take other precautions to ensure that the pump will remain inoperative.
3. Allow the pump to 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-- 056880SERIES
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Not enough liquid in casing.
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
Pump speed too slow. Check driver output; consult vehicle
Strainer clogged. Check strainer and clean if neces-
Air leak in suction line. Correct leak.
Suction intake not submerged at
proper level or sump too small.
Strainer clogged. Check strainer and clean if neces-
Pump speed too slow.
Lining of suction hose collapsed. Replace suction hose.
Addliquidtocasing.See
PRIMING.
leakingorwornsealorgasket.
operation manual.
sary.
Check installation and correct
submergence as needed.
sary.
Check driver output; consult vehicle
operation manual.
TROUBLESHOOTING PAGE D -- 1
Page 18
OM-- 05688 0SERIES
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)
PUMP REQUIRES
TOO MUCH
POWER
EXCESSIVE NOISE Cavitation in pump. Reduce suction lift and/or friction
Impellerorotherwearingpartsworn
or damaged.
Suction lift or discharge head too high. Check piping installation and install
Pump speed too slow. Check power source output; con-
Discharge line clogged or restricted;
hose kinked.
Universal joint drive misaligned. Align drive.
Pump speed too high. Check driver output; check that
Discharge head too low. Adjust discharge
Replace worn or damaged parts.
Check that impeller is properly centered and rotates freely.
bypass line if needed. See INSTAL-
LATION.
sult power source operation manual.
Check discharge lines; straighten
hose.
sheaves or couplings are correctly
sized.
valve.
losses in suction line. Record vacuum and pressure gauge readings
and consult local representative or
factory.
BEARINGS RUN
TOO HOT
Pumping entrained
air.
Pump or drive not securely mounted.
Universal joint drive misaligned. Align drive.
Low or incorrect lubricant. Check for proper type and level of
Bearing temperature is high, but within
limits.
Low or incorrect lubricant. Check for proper type and level
Suction and discharge lines not properly supported.
Drive misaligned; piping improperly installed.
Bearings in power source or gearbox Check bearings.
worn or binding.
Locate and eliminate source of air
bubble.
Secure mounting hardware.
lubricant.
Check bearing temperature regularly to monitor any increase.
of lubricant.
Check piping installation for proper
support.
Realign drive and piping at operating temperature. Add expansion
joints if required.
TROUBLESHOOTINGPAGE D -- 2
Page 19
0SERIES OM-- 05688
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 MODELS 06C1--GAR
Based on 70_ F(21_ C) clear water (corrected to
0.8 specific gravity) at sea level with minimum suction lift. Since pump installations are seldom identical, your performance may be different due to such
factors as viscosity, specific gravity, elevation, temperature, a nd impeller trim.
If your pump serial number is followed by an “N”,
your pump is NOT astandardproductionmodel.
Contact the Gorman-Rupp Company to verify part
numbers.
Pump speed and operating condition
points must be within the continuous performance range shown on the curve.
MAINTENANCE & REPAIR PAGE E -- 1
Page 20
SECTION DRAWING
0SERIESOM --05688
Figure 1. Pump Models 06C1 --- GAR
MAINTENANCE & REPAIRPAGE E -- 2
Page 21
0SERIES OM-- 05688
PARTS LIST
Pump Model 06C1 --- GAR
(From S/N 1289163 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
PART NAME PART
NO.
NUMBER
MAT’L
CODE
QTY ITEM
NO.
PART NAME PART
NUMBER
MAT’L
CODE
QTY
1 PUMP CASING 38222---524 13040 1
2
IMPELLER 38624--- 513 1304R 1
3
SEAL ASSEMBLY 25271--- 192 --- --- --- --- --- 1
4
DISCH FLANGE GASKET 5372G 20000 1
5
GEARBOX HSG GASKET 8377G 18000 1
6 STUD C0606--- 1/2 15991 8
7 HEX NUT D06 15991 8
8 HEX HD CAPSCREW B0503 15991 8
9 PIPE PLUG P06 15079 1
10 ROTATION DECAL 2613BM --- --- --- --- --- 1
11 PIPE PLUG P04 15079 1
12 STREET ELBOW RS02 11999 1
13 AIR VENT S1530 --- --- --- --- --- 1
14 COVER PLATE ASSY 10210A 24020 1
15 DRI VE GEAR 38541--- 206 16000 1
16
WOODRUFF KEY AV1009 15990 1
17
COVER PLATE GASKET 10210G 18000 1
18
BEARING CAP GASKET 10213G 18000 1
19 STUD C0605 15991 4
20 HEX NUT D06 15991 4
21
IMPELLER SHIM SET 2X 17090 1
22 BEARING CAP 10213 10010 1
23
SHAFT KEY N0508 15990 1
24 DRIVE SHAFT 10209 16040 1
25
O I L S E A L S 5 0 6 --- --- --- --- --- 1
26
BEARING SHIM SET 8543 15990 1
27
OUTBOARD DRIVE BRG S1080 --- --- --- --- --- 1
28 PIPE PLUG P06 15079 1
29
INBOARD DRIVE BRG S1080 --- --- --- --- --- 1
30
OUTBOARD PINION BRG S1080 --- --- --- --- --- 1
31 INBOARD PINION BRG 23413 --- 209 --- --- --- --- --- 1
32 GEARBOX HOUSING 38313--- 014 10010 1
33
OIL SEAL S2007 --- --- --- --- --- 1
34
BEARING SHIM SET 8543 15990 1
35 STUD C0807 15991 6
36 HEX NUT D08 15991 6
37
GEARBOX HSG O-RING S2085 --- --- --- --- --- 1
38
WEAR RING 8464 10018 1
39 NAME PLATE 38818--- 020 13990 1
40 DRIVE SCREW BM#04--- 03 15990 4
41 CASING DRAIN PLUG P32 10009 1
42
WEAR RING 64H5 10018 1
43 IMP FLANGED NUT 22565--- 307 --- --- --- --- --- 1
44 SUCTION HEAD 38247 --- 310 13040 1
45 PINION SHAFT 38521--- 711 16000 1
46
IMPELLER KEY N0405--- 1/4 15990 1
47 SUCTION STICKER 6588AG --- --- --- --- --- 1
48 STUD C0605--- 1/2 15991 12
49 HEX NUT D06 15991 12
50
SUCTION HEAD GASKET 8376G 20000 1
51 DISCHARGE STICKER 6588BJ --- --- --- --- --- 1
52 PIPE PLUG P06 15079 1
53 MAGNETIC PIPE PLUG PM06 15079 1
54 GEARBOX LUBE DECAL 38816---077 --- --- --- --- --- 1
55 PIPE PLUG P06 15079 1
56 PIPE PLUG P06 15079 1
NOT SHOWN:
SHIPPING PLUG 11495C 15079 1
G - R D E C A L G R --- 0 3 --- --- --- 1
INSTRUCTION TAG 38817--- 040 --- --- --- 1
INDICATES PARTS RECOMMENDED FOR STOCK
Above Serial Numbers Do Not Apply To Pumps Made In Canada.
CANADIAN SERIAL NO. .............................. AND UP
MAINTENANCE & REPAIR PAGE E -- 3
Page 22
0SERIESOM-- 05688
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and decals attached to the pump.
This pump requires little service due to its rugged,
minimum-maintenance design. However, if it becomes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the sectional view (see Figure 1) and the accompanying parts list.
Most service functions, such as impeller, wear ring,
and seal replacement, may be performed by draining the pump and removing the suction head.
However, due to the confined mounting location of
the pump, it is recommended that the pump and
gearbox be removed from the vehicle for service.
The following instructions assume complete disassembly is required.
If the gearbox requires repair, proceed w ith PUMP
AND SEAL DISASSEMBLY, followed by GEAR-
BOX DISASSEMBLY.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
After the vehicle is positioned for pump
maintenance, block t he wheels and set
the emergency brake before attempting
to disconnect the drive shaft or remove
the pump. Be sure the pump is properly
reinstalled and secured before operation.
Removing Pump And Gearbox
Due to the confined mounting location, it is recommended that the pump and gearbox be removed
from the vehicle for service.
Before attempting to service the pump, switch off
the vehicle ignition and remove the key, or take other safety precautions to ensure that it will remain
inoperative. Close all valves in the suction and discharge lines.
Before attempting to open or servic e the
pump:
1. Familiarize yourself with this manual.
2. Switch off the vehicle ignition and
remove the key, or take other precautions to ensure that the pump
will remain inoperative.
3. Allow the pump to cool if overheated.
Thepumpassemblycanbeseriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Due to the confined mounting location,
specialized equipment such as a transmission jack with custom brackets should be
used to lift and position the pump and
gearbox.
Close all valves in the suction and discharge lines.
Remove the pump casing drain plug (40) and drain
the pump. Clean and reinstall the drain plug using
‘Loctite Primer N and PST’.
Use lifting and moving equipment in
MAINTENANCE & REPAIRPAGE E -- 4
Page 23
OM-- 056880SERIES
good repair and with adequate capacity
to prevent injuries to personnel or damage to equipment.
Disconnect the P.T.O. shaft from the gearbox drive
shaft. Remove all the hardware securing the pump
and gearbox to the vehicle chassis. Tie and tag the
any leveling shims used under the casing mounting feet to ease reassembly. Move the pump and
gearbox to a clean, well-equipped shop for maintenance and repair.
Suction Head And Wear Ring Removal
The wear ring (42) can be serviced by removing the
suction head (44). Remove the nuts (49) and pull
the suction head and wear ring out of the pump
casing. Remove the suction head gasket (50).
Inspect the wear ring for excessive wear or scoring.
The wear ring is secured in the suction head by a
press fit. If replacement is required, use a small bit
to drill two holes through the ring horizontally, 180_
apart. Use a saw and chisel to complete the cuts
through the ring, and remove it from the suction
head. Use caution not to damage the suction
head bore when removing the ring.
With the impeller removed, inspect the pump casing wear ring (38) for excessive wear or scoring.
The wear ring is secured in the pump casing by a
press fit. If replacement is required, use a small bit
to drill two holes through the ring horizontally , 180_
apart. Use a saw and chisel to complete the cuts
through the ring, and remove it from the casing.
Use caution not to damage the pump casing bore
when removing the ring.
Use caution not to damage the pump casing when removing the wear ring.
Seal Removal And Disassembly
Remove the seal spring. Lubricate the pinion shaft
(45) adjacent to the seal, and work oil up under the
rubber bellows. Slide the rotating portion of the
seal off the shaft.
Use a pair of stiff wires with hooked ends to hook
the stationary element from the back side, and pull
the element and O-ring from the seal bore in the
pump casing.
Use caution not to damage the suction
head when removing the wear ring.
Impeller And Casing Wear Ring Removal
Immobilize the impeller (2) by inserting a brass rod
through the discharge port and wedging it in the
impeller vanes. Be careful not to damage the impeller. Remove the impeller nut (43). Remove the
brass rod.
Install three 1/4-20 UNC ---2B x 2-1/2 inch long capscrews (not supplied) in the tapped holes in the impeller. Use a suitable puller to remove the impeller
from the shaft (45). Retain the shaft key (46). Remove the impeller adjusting shims (21). Use caution when removing the impeller; tension on the
seal spring will be released as the impeller is removed.
Pump Casing Removal
If the oil seal (33), housing gasket (5), or O-ring (37)
require replacement, or if the gearbox is to be disassembled, remove the nuts (36) and slide the
pump casing off the shaft. Remove the pump casing gasket and O-ring.
Remove the bearing shims (34). Tie and tag the
shims, or measure and record their t hickness for
ease of reassembly.
Place the pump casing (1) on a clean surface with
the suction head opening facing up, and use a
screwdriver or other suitable tool to press the oil
seal (33) from the pump casing.
If no further disassembly is required, proceed with
PUMP AND SEAL REASSEMBLY. If the gearbox
requires disassembly, do not reassemble the
pump components at this time. Refer to GEAR-
BOX DISASSEMBLY and GEARBOX REASSEMBLY, followed by PUMP AND SEAL REAS-
SEMBLY.
MAINTENANCE & REPAIR PAGE E -- 5
Page 24
0SERIESOM-- 05688
PUMP AND SEAL REASSEMBLY
If the gearbox requires disassembly, refer to
GEARBOX DISASSEMBLY and GEARBOX
REASSEMBLY, followed by PUMP AND SEAL
REASSEMBLY.
Pump Casing And Wear Ring Installation
If the wear ring (38) was removed for replacement,
press the replacement ring into the pump casing
(1) until it seats squarely against the shoulder bore.
The wear ring must seat squarely in the
pump casing bore or binding and/or excessive wear will result.
Seal Reassembly and Installation
(Figures 1 and 2)
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-ventilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent containers.
The seal is not normally reused because wear patterns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emergency, carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
Position the oil seal (33) in the casing bore with the
lip positioned as shown in Figure 1. Press the oil
seal into the bore until fully seated against the bore
shoulder.
Lubricate the O-ring (37) and install it in the groove
in the gearbox housing (32). Install the same thickness of bearing adjusting shims (34) as previously
removed.
NOTE
Shaft endplay should be between .000 and .005
inch (0,0 and 0,127 mm). Add or remove bearing
shims to achieve correct endplay.
Install the gearbox housing gasket (5) over the casing studs (35). Carefully slide the pump casing
over the shaft until fully seated against the gearbox
housing. Be careful not to damage the lip of the oil
seal on the shaft keyway. Make sure the bearing
shimsremaininpositioninthecasingbore.Secure
the casing to the gearbox with the nuts (36).
Handle the seal parts w ith 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 leakage. Clean and polish the pinion shaft, or replace it
if there are nicks or cuts on either end (see GEAR-
BOX DISASSEMBLY). If any components are
worn, replace the complete 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 stationary seat O-ring, bellows and pinion shaft with
water or a very small amount of oil, and apply a
drop of light lubricating oil on the finished faces.
Assemblethesealasfollows,(seeFigure2).
MAINTENANCE & REPAIRPAGE E -- 6
Page 25
SHAFT
KEY
IMPELLER
SHAFT
IMPELLER
SHIMS
SEAL SPRING
OM-- 056880SERIES
BELLOWS
STATIONARY
SEAT
ROTATING
ELEMENT
IMPELLER
RETAINER
Figure 2. 25271 --192 Seal Assembly
This seal is not designed for operation at
temperatures above 160_F(71_C). Do not
use at higher operating temperatures.
Inspect the pinion shaft (45) for distortion, nicks,
scratches, or damage to the shaft keyway. Dress
small nicks or burrs with a fine file or emery cloth. If
excessive wear exists or the shaft is defective, refer
to GEARBOX DISASSEMBLY and replace the
shaft.
O-RING
PUMP CASING
Lubricate the stationary seat O-ring with light oil
and install it in the groove in the stationary seat.
Use thumb pressure to press this subassembly
into the pump casing until fully seated. Be careful
not to damage the seal face. After installation,wipe
the seal face in a concentric pattern with a clean,
lint-free cloth to remove any fingerprints.
NOTE
It is recommended that a tapered sleeve (see Figure3)beinstalledovertheshaftkeywaytoeaseinstallation of the rotating portion of the seal. This tool
can be made from steel tubing or black pipe.
MAINTENANCE & REPAIR PAGE E -- 7
Page 26
1.44
36,6 mm
32
SLEEVE
0SERIESOM-- 05688
IMPELLER
SHAFT
1.00 D
25,4 mm
5_ TAPER
(APPROX.)
FINISH ALL OVER TO
BE 50 RMS OR LESS
SLEEVE DIMENSIONS SLEEVE INSTALLED
1.25 D
31,8 mm
ENDS TO BE SQUARE
AND PARALLEL
Figure 3. Seal Installation Sleeve
Lubricate the tapered sleeve and position it on the
shaft. Position the rotating portion of the seal (consisting of the retainer, bellows and rotating element) on the sleeve, and apply even pressure
against the shoulder of the seal retainer until the rotating subassembly slides onto the s haft and the
seal faces contact. A push tube cut from a piece of
plastic tubing w ould aid this installation. The I.D. of
the tube should be approximately the same diameter as the I.D. of the seal spring.
Remove the tapered sleeve and install the seal
spring. Make sure that all components of the seal
are seated squarely.
SEAL
AREA
KEYWAY
Impeller Installation
(Figures 1 and 4)
Inspect the impeller (2), and replace it if cracked or
badly worn.
For maximum pump efficiency, the impeller must
be centered within the volute scroll. To verify impeller positioning, measure the pump casing and impeller as shown in Figure 4. Use these measurements to calculate the required impeller location
(dimension E). Add or remove impeller adjusting
shims (21) to obtain dimension E.
CD
B
2
AB
B
+
A
2
Figure 4. Centering Impeller Within Pump Casing
With the correct thickness of impeller adjusting
shims installed, apply ‘Locquic Primer Grade T’ ,
followed by ‘Loctite Retaining Compound No. 242’
D
2
E
Step 2Step 1 Step 3
C
+
D
2
=
E
to the keyway, impeller key (46) and shaft threads
(use no substitutes).
MAINTENANCE & REPAIRPAGE E -- 8
---
Page 27
OM-- 056880SERIES
NOTE
It is not recommended that substitute locking materials be used in this application. Use only the recommended ‘Loctite’ products.
Align the impeller and key with the shaft keyway ,
and press the impeller onto the shaft until fully
seated. Be sure the seal spring seats squarely
over the shoulder on the back of the impeller.
After the impeller is installed, immobilize the drive
shaft (24), and install the impeller nut (43). Torque
the impeller nut to 120 ft. lbs. (1440 in. lbs. or 16.6
m. kg.).
NOTE
After the impeller has been installed, check for free
rotation.Correct any scraping or binding before further reassembly.
Suction Head And Wear Ring Installation
If the wear ring (42) was removed for replacement,
press the replacement ring into the suction head
(43) until it seats squarely against the shoulder
bore.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump and gearbox have been properly lubricated (see LUBRICATION).
Refer to OPERATION, Section C, before putting
the pump back into service.
GEARBOX DISASSEMBLY
When the pump is properly operated and maintained, the gearbox should not require disassembly. Disassemble the gearbox only when there is
evidence of wear or damage.
Gearbox disassembly in the field is not recommended. These operations should be
performed only in a properly-equipped
shop by qualified personnel.
If the gearbox requires disassembly, first disassemble the pump components as indicated in
PUMP AND SEAL DISAS SEMBLY.
Before attempting to disassemble the gearbox, remove the magnetic drain plug (53) and drain the lubricant. Clean and reinstall the drain plug.
The wear ring must seat squarely in the
suction head bore or binding and/or excessive wear will result.
Install the suction head gasket (50) over the studs
(48). Slide the suction head over the studs, and secure with the nuts (49).
Installing Pump And Gearbox
Secure the pump and gearbox to the vehicle chassis with the previously removed hardware. Be sure
to install any leveling shims used under the casing
mounting feet.
Reconnect the P.T.O. shaft the the gearbox drive
shaft, and check the alignment as described in IN-
STALLATION,SectionB.
MAINTENANCE & REPAIR PAGE E -- 9
With the pump end components removed, remove
thepipeplug(28)anduseadriftpintotapthepinion shaft (45) and bearings (30 and 31) from the
gearbox housing (32).
Remove the shaft key (23). Remove the nuts (20)
andslidethebearingcap(22)andassembledoil
seal (25) off the shaft. Remove the bearing cap
gasket (18) and bearing shims (26). Inspect the oil
seal and, if replacement is required, press it form
the bearing cap.
Disengage the capscrews (8) and remove the cover plate and gasket (14 and 17). Position two
spacer bars on the drive side of the helical gear
(15) to prevent it from moving as the drive shaft (24)
is removed.
Install a standard 5/8-11 UNC x 1-1/4 inch long
capscrew (not supplied) in the tapped hole in the
Page 28
0SERIESOM-- 05688
drive shaft and use a suitable puller to remove the
driveshaftandassembledbearing(27)fromthe
gearbox housing. Retain the woodruff key (16) and
helical gear as they come free of the shaft.
Remove the capscrew from the tapped hole in the
end of the drive shaft.
The inboard bearing (29) will remain in the gearbox
housing. Reach through the cover plate opening to
remove the bearing.
After removing the shafts 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.Itis
strongly recommended that the bearings
be replaced any time the shaft and bearings are removed.
ings. This may scratch the balls or races
and cause premature bearing failure.
Rotate the bearings by hand to check for roughness or binding and inspect the bearing balls. If rotation is rough or the bearing balls discolored, replace the bearings.
The bearing tolerances provide a tight press fit
onto the shafts and a snug slip fit into the gearbox
housing. Replace the bearings, shafts or gearbox
housing if the proper bearing fit is not achieved.
If the bearings, pinion or drive shafts require replacement, use a suitable puller to remove the
bearings.
GEARBOX REASSEMBLY
Clean and inspect the bearings as indicated in
GEARBOX DISASSEMBLY.
Clean the gear housing, helical gear, drive and pinion shafts, and all component parts (except the
bearings) with a soft cloth soaked in cleaning solvent. Inspect the parts for w ear or damage and replace as necessary.
Most cleaning solvents are toxic and
flammable. Use them only in a well-ventilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent containers.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
Bearings must be kept free of all dirt and
foreign material. failure to do so will greatly
shorten bearing life. Do not spin dry bear-
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place.Itis
strongly recommended that the bearings
be replaced any time the shaft and bearings are removed.
Inspect the helical gear (15), pinion shaft (45) and
drive shaft (24) for distortion, excessive wear, broken teeth, damaged keyways, n icks or scratches,
or for damage on the impeller or drive ends of the
shafts. Dress small nicks or burrs with a fine file or
emery cloth. Replace the shafts or gear as required.
NOTE
All of the bearings used in the gearbox are identical
parts; however, the inboard drive shaft bearing (28)
should not be heated and installed on the shaft
prior to reassembling the gearbox.
The outboard drive bearing (27) and pinion shaft
bearings (30 and 31) may be heated to ease installation. An induction heater, hot oil bath, electric
oven, or hot plate may be used to heat the bearings. Bearings should never be heated with a direct flame or directly on a hot plate.
MAINTENANCE & REPAIRPAGE E -- 10
Page 29
OM-- 056880SERIES
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 them onto
the shafts, one at a time, until they are fully seated.
This should be done quickly, in one continuous
motion, to prevent the bearings from cooling a nd
sticking on the shaft.
Use caution when handling hot bearings 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 occurred, use a suitably sized sleeve and a press to
reposition the bearings.
If heating the bearings is not practical, use a suitably sized sleeve and an arbor (or hydraulic) press
to install the bearings onto the shafts.
plate and gasket (14 and 17) and secure with the
capscrews (8).
Apply a light coating of oil to the lip of the oil seal
(25), and press it into the bearing cap (22) with the
lip positioned as shown in Figure 1. The face of the
oil seal should be j ust flush with the outer face of
the bearing cap.
Install the same thickness of bearing adjusting
shims (26) as previously removed. Install the bearing cap gasket (18), and slide the bearing cap over
the shaft, being careful not to damage or roll the oil
seal lip. Secure the bearing cap with the nuts (20).
NOTE
Drive shaft endplay should be between . 005 and
.012 inch (0,127 and 0,305 mm). Add or remove
bearing adjusting shims (26) to achieve the correct
endplay.
Position the bearing housing on a flat surface with
the pump side up, and support it so it is level and
stable.
Reinstall the pipe plug (28) in the gearbox housing.
Slide the pinion shaft into the gearbox housing until
the gear teeth mesh with those of the helical gear,
and the outboard bearing (30) seats squarely
against the bearing bore.
Refer to PUMP AND SEAL REASSEMBLY and in-
stall the remaining pump components.
When installing the bearings onto the
shafts, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Lay the gearbox housing on the bed of an arbor (or
hydraulic) press with the pump side down, and
support it so it is level and stable. Lubricate the inboard drive shaft bearing (29) and slide it into the
gearbox housing bore until fully seated.
Install the woodruff key (16) in the shaft keyway.
Position the helical gear (15) against the inboard
bearing. Slide the drive shaft and assembled outboard bearing into the gearbox housing. Align the
woodruff key with the gear keyway, and slide the
gear onto the shaft. Press the drive shaft into the
inboard bearing until fully seated. Install the cover
MAINTENANCE & REPAIR PAGE E -- 11
Pinion shaft endplay should be between . 000 and
.005 inch (0,000 to 0,127 mm). Add or remove bearing shims (34) to achieve the correct endplay.
After the pump components are installed, lubricate
the gearbox as indicated in LUBRICATION.
LUBRICATION
Seal Assembly
The seal assembly is lubricated by the medium being pumped and no additional lubrication is required.
NOTE
Page 30
0SERIESOM-- 05688
Gearbox
The gearbox was fully lubricated when shipped
from the factory. Check the oil level regularly at the
oil fill pipe plug (52). When lubrication is required,
remove the air vent (13) and add SAE No. 90 nondetergent gear oil. Fill the gearbox until the oil level
reaches the bottom of the fill plug hole. Clean and
reinstall the fill plug. Do not over lubricate. Over-lubrication can cause the bearings to over-heat, resulting in premature bearing failure.
NOTE
If the gearbox is rotated out of the standard position, the oil fill and drain plugs must be relocated.
The magnetic drain plug (53) must be relocated to
the lowest port, and the oil vent and elbow (12 and
13) must be relocated to the highest port. Consult
the factory for correct positioning of the fill plug to
provide for proper lubrication of the gearbox.
Under normal conditions, drain the gearbox once
each year. Add 2 ounces (59 ml) of Dow Corning
‘Molykote
mately 21 ounces (621 ml) of SAE No. 90 non-detergent gear oil. Change the oil more frequently if
the pump is operated continuously or installed in
an environment with rapid temperature change.
r M Gear Guard’, then fill with approxi-
Monitor the condition of the bearing lubricant regularly for evidence of rust or moisture condensation. This is especially important in areas where variable hot and
cold temperatures are common.
For cold w eather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
MAINTENANCE & REPAIRPAGE E -- 12
Page 31
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
Loading...