SPX FLOW Universal 5000 Industrial Series User manual

Universal 5000 Industrial Series
ROTARY POSITIVE DISPLACEMENT PUMP
FORM NO.: 95-03012 REVISION: 12/2015 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
INSTRUCTION MANUAL

Information contained in this manual is subject to change
without notice and does not represent a commitment on the
part of SPX FLOW, Inc. No part of this manual may be
reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying and
recording, for any purpose, without the express written per-
mission of SPX FLOW, Inc.
Copyright © 2015 SPX FLOW, Inc.
AllRightsReserved.
Revision Date: 12/2015
Publication: 95-03012
SPX FLOW, Inc.
611 Sugar Creek Road
Delavan, WI 53115 USA
Tel: [phone] or [phone]
Fax: [phone] or [phone]
E-mail: [e-mail]
Web site: www.spxflow.com

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95-03012
egaPNOITCESegaPNOITCES
TABLE OF CONTENTS
Fluid Head Assembly...............................32
Packing Seals and Body.............................. 32
Mechanical Seals and Body........................32-33
Typical Flush Piping............................................33
Rotor Clearances
Back Face ................................................ 34
Rotor to Body........................................... 34
Front Face ................................................ 34
XReference Tables .
Table 1. Standard Rotor Clearance............. 35
Table 2. Assembly Torque Values.............. 35
Table 3. Suggested Shims.......................... 35
Table 4. Hydraulic Press Tonnage.............. 35
XI Waukesha Internal By-Pass Relief Valve36-37
XII Universal Industrial Parts Lists
5040 Pump...............................................38-39
5040 Standard Seals................................ 48
5050 Pump...............................................40-41
5050 Standard Seals................................ 49
5060 Pump...............................................42-43
5060 Standard Seals................................ 50
5070 Pump...............................................44-45
5070 Standard Seals................................ 51
5080 Pump...............................................46-47
5080 Standard Seals................................ 52
XIIIStuffing Box Dimensions......................... 53
WARNING LABEL REPLACEMENT .................... 54
Safety .......................................................... 2
IReceiving and Warranty........................... 3
ll Installation................................................. 4
lllStart-up Check List.................................. 10
IV Troubleshooting a Pump System............11-14
VOperation .................................................. 15
Vl Maintenance ............................................. 16
Visual Checks........................................... 16
Feel Checks............................................. 17
Seal Maintenance.................................... 18
Packing Seals........................................... 18
Mechanical Seals..................................... 19
Annual Maintenance ..................................20
VlIFactory Reconditioning ......................... .. 21
VlllDisassembly Procedures
Fluid Head
Cover Removal......................................... 21
Rotor Removal......................................... 22
Body and Seal Removal........................... 22
Shaft, Bearings and Gear Removal .........23-25
IX Assembly Procedures
Shaft Assembly
Front Bearing, 5040................................. 26
Front Bearing, 5050, 5060, 5070, 5080 ... 27
Rear Bearing, All Models......................... 28
Gear Case Assembly................................... 29
Front Bearing Grease Seals- 5080 Only
Shims - All Models................................... 29
Shaft Installation (All Models).................. 29
Bearing Retainer Adjustment...................29-30
Rear Seal Assembly................................. 30
Timing Gear and Cover Assembly............... 31

295-03012
SAFETY
Warnings, cautions and notes are contained in this manual. To avoid serious injury and/
or possible damage to equipment, pay attention to these messages.
WARNING Hazards or unsafe practices which COULD result
in severe personal injury or death and how to avoid it.
CAUTION Hazards or unsafe practices which COULD result
in minor personal injury or product or property damage.
NOTE Important information pertaining directly to the subject.
(Information to be aware of when completing the task.)
Read and understand this manual prior to
installing,operatingormaintaining thispump.
REPLACEMENTLABEL
See Page 57 REPLACEMENTLABEL
See Page 57
WARNING
TO AVOID SERIOUS INJURY, DO NOT
INSTALL OR SERVICE PUMP UNLESS
ALL POWER IS OFF AND LOCKED OUT.
WARNING
TO AVOID POSSIBLE SERIOUS INJURY,
SHUT OFF AND DRAIN PRODUCT FROM
PUMP PRIOR TO DISCONNECTING PIPING.
WARNING
DO NOT OPERATE
WITHOUT GUARD IN PLACE
Stop Machinery to Clean,
ServiceorRepair
WARNING
SEE PAGE 57 FOR LABEL PLACEMENT
WARNING
To avoid electrocution, ALL electrical should be
donebyaregisteredElectrician,following
IndustrySafetyStandards.
All power must be OFF and LOCKED OUT

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95-03012
FACTORY INSPECTION
Each WAUKESHA pump is shipped completely assembled, lubricated and ready for use. (See OPERA-
TION on page 15). The WAUKESHApump is a precision product, designed to provide long, trouble-free
service in a properly designed system with normal maintenance.
RECEIVING INSPECTION
Ports are covered at the factory to keep out foreign objects. If covers are missing or damaged, a thor-
ough inspection of fluid head, by removing pump cover, is recommended. Be sure pumping head is
clean and free of foreign material before rotating shaft.
LOSS OR DAMAGE
If your pump has been lost or damaged in transit, file a claim at once with the delivering carrier and ask
for an Inspector to call. The carrier has signed the Bill of Lading acknowledging that the shipment has
been received from us in good condition.
We will of course assist you in every way in collecting claims for loss, or damage, however, we are not
responsible for the collection of claims or replacement of material.
WARRANTY
Please read the Warranty statement to correctly determine if you have a claim. In warranty claims you
must have a "Returned Goods Authorization" (RGA) from the manufacturer before any returns will be
accepted. Your Distributor will help you in a warranty problem. (See page 55 for Information required)
WAUKESHA CHERRY-BURRELL WARRANTY
Seller warrants its products to be free from defects in materials and workmanship for
a period of one (1) year from the date of shipment. This warranty shall not apply to
products which require repair or replacement due to normal wear and tear or to
products which are subjected to accident, misuse or improper maintenance. This
warranty extends only to the original Buyer. Products manufactured by others but
furnished by Seller are exempted from this warranty and are limited to the original
manufacturer’s warranty.
Seller’s sole obligation under this warranty shall be to repair or replace any products
that Seller determines, in its discretion, to be defective. Seller reserves the right either
to inspect the products in the field or to request their prepaid return to Seller. Seller
shall not be responsible for any transportation charges, duty, taxes, freight, labor or
other costs. The cost of removing and/or installing products which have been repaired
or replaced shall be at Buyer’s expense.
Seller expressly disclaims all other warranties, express or implied, including without
limitation any warranty of merchantability of fitness for a particular purpose. The
foregoing sets forth Sellers entire and exclusive liability, and Buyer’ exclusive and sole
remedy, for any claim of damages in connection with the sale of products. In no event
shall Seller be liable for any special consequential incidental or indirect damages
(including without limitation attorneys’ fees and expenses), nor shall Seller be liable
for any loss of profit or material arising out of or relating to the sale or operation of
the products based on contract, tort (including negligence), strict liability or otherwise.
SECTION I
RECEIVING AND WARRANTY

495-03012
SECTION II
INSTALLATION

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95-03012
PUMP INSTALLATION
The installation of your Waukesha pump and its piping system should follow the practices described to
give optimum performance, and be in accordance with local codes and restrictions.
All system equipment, such as motors, sheaves, drive couplings, speed reducers, etc., must be properly
sized to insure satisfactory operation of your Waukesha pump within its limits.
CAUTION: Waukesha pumps are positive displacement, low slip design and will be
severely damaged if operated with closed valves in discharge or inlet lines. Pump war-
ranty is not valid for damages caused by a hydraulic overload from operation or start-up
with a closed valve in the system.
WARNING
Full coupling guards must be installed to isolate operators and maintenance
personnel from rotating components. Coupling guards are provided with
Waukesha pumps as a part of a complete pump and drive package.
1. Installing the Pump and Drive Unit. Pumps of this type and size are generally mounted on a common
base plate with the drive.
The unit can be installed in the plant location in several ways:
Permanent installation on foundation with bolts and
grout. (Level unit before grouting.)
Many commercial types available.
Leveling and/or vibration isolation pads.
GUARD
GUARD
INSTALLATION

695-03012
2. Good Piping Practice.
All piping to the pump should be supported independently, to minimize the forces exerted on the pump. Such
forces can cause misalignment of pump parts and lead to excessive wear of rotors, bearings and shafts.
NOTE: Pump dimensions and pump weights are on page 4.
Thermal expansion of piping-can cause tremendous
forces. Use thermal expansion joints to minimize
forces on pump.
Flexible joints can also be used to limit the transmis-
sion of mechanical vibration. Anchor free ends of any
flexible hose in system.
Portable bases-for movement to different locations.
Adjustable leg base, commonly used for sanitary
pumps. For washdown under base. Can be easily
moved or repositioned.
Piping support:
Weight of piping and fluid-support piping indepen-
dently with hangers or pedestals.
GUARD
GUARD
WARNING
TO AVOID SERIOUS INJURY, DO NOT
INSTALL OR SERVICE PUMP UNLESS
ALL POWER IS OFF AND LOCKED OUT.

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95-03012
PipingLayout
Inlet side: Slope piping up to inlet to avoid air
pocket.
CORRECT
OUTLET INLET
WRONG
INLET
BY-PASS
FLOW
OUTLET
INLET
RELIEF
VALVE
VALVE
VALVE
''Isolation'' Valves-permit pump maintenance and
removal safely and without emptying entire system
relief valve.
INLET
Inlet Vacuum Service-use check valve on outlet
side.
• Prevents backflow (air or fluid).
• Facilitates initial start-up (minimizes differential
pressure pump must supply to start flow).
Inlet side-use check valves to keep inlet line full,
particularly with low viscosity fluids, and in start-
stop operation.
ReliefValve
To protect the pump and piping system against
excessive pressure, a relief valve should be installed.
An integral relief valve, designed to bypass the fluid
internally from the pump outlet to the inlet, should
not be used on applications where the discharge
must be closed for more than a few minutes.
Prolonged operation of the pump with closed dis-
charge will cause heating of the fluid circulating
through the relief valve. When such operation is
necessary, the relief valve, whether integral, attach-
able, or line-mounted, should discharge externally
through piping connected to the fluid source, or if
that is not practical, into the inlet piping near the
source.
AIR POCKET
OUTLET
INLET
OUTLET
OUTLET

895-03012
WARNING
TO AVOID SERIOUS INJURY, DO NOT
INSTALL OR SERVICE PUMP UNLESS
ALL POWER IS OFF AND LOCKED OUT.
A particular relief valve design will have a charac-
teristic curve such as shown. The ''cracking pres-
sure" can usually be set by spring adjustment, or
by adjustable pneumatic pressure, etc. Flow will
begin to bypass when this ''cracking pressure'' is
reached. As flow increases through the bypass, the
system pressure will also increase.
The pressure increase for a given valve design depends on the valve setting, the flow rate, and the
viscosity of the fluid being pumped. If the full-flow bypass pressure exceeds the maximum allowable for
the particular pump and piping system, an oversize attachable relief valve may sometimes be used to
limit the full-flow bypass pressure to an acceptable value.
Inlet Side-Strainers and Traps.
Inlet side strainers and traps can be used to pre-
vent pump damage from foreign matter. Selection
must be carefully made as clogging can easily
occur, restricting the inlet, causing cavitation and
flow stoppage.
3. Alignment of Pump to Drive.
Pumps and drives which are ordered from the factory and mounted on a common base plate are accu-
rately aligned before shipment. The alignment should be rechecked after the complete unit has been
installed and the piping completed. Periodic rechecking is advisable during the pump service life.
CRACKING
PRESSURE
BY-PASS
PRESSURE
Wherever possible-install gauges!!
STRAINER
FLOW
MAGNETIC TRAP
Pressure Gauges
Pressure and Vacuum gauges provide the easiest
way to tell you something about the pump opera-
tion. • Normal or abnormal pressures
• Overload conditions
• Indication of flow
• Changes in pump condition
• Changes in system conditions
• Changes in fluid viscosity

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95-03012
CHECK AT 4 POINTS AROUND
COUPLING-EVERY 90°
In-line Drives. For initial pump installation, and for rechecking alignment, the following steps are
advised:
Use a flexible coupling to connect the drive to the pump. Many different types are available, including
couplings with slip or overload provision.
FLUID
COUPLING
SLIP
OVERLOAD
DETENT
FLEXIBLE
MEMBER
GEAR
TYPE
RUBBER
CUSHIONED
A flexible coupling is used to compensate for end play and small differences in alignment. The
pump and drive shaft should be aligned as closely as is possible.
Check angular alignment:
Using feeler gauges, or taper gauges.
Adjust to get equal dimension at all points.At the
same time set space between coupling halves to
manufacturer’s recommended distance.
FEELER OR TAPER GAUGE
SHIM AS
NEEDED
Check parallel misalignment: Use straight edges and shims:
MOVE DRIVE
AS NEEDED
SHIM HEIGHT AS
NEEDED
After piping is complete, and drive and couplings are aligned, turn pump shaft manually
to see if it turns freely without binding.
Note: Covers have been removed for illustration purposes only. The pump
cannot be operated with the cover removed.
TOP SHAFT
DRIVE LOWER SHAFT
DRIVE LOWER SHAFT
DRIVE
TOP SHAFT
DRIVE
Check rotation direction of drive to see that pump will rotate in proper direction.
(“Liquid End” of pump is shown below.)
CONNECT COUPLING HALVES AND INSTALL COUPLING GUARD.
Determine rotation direction by looking at the motor coupling.
Figure 1

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After piping is complete and before belts are installed, turn pump shaft manually to see that it turns
freely.
Check rotation direction of pump to see that pump will rotate in proper direction (see figure 1, page 9)
Install belts and tension them correctly. Install belt guard.
KEEP DISTANCE
TO MINIMUM
MOVE DRIVE TO CORRECT ANGULAR
AND PARALLEL MISALIGNMENT.
Aligning belt and chain drives. Using straight-edges and visual check:
.
SECTION III
START-UP CHECK LIST
The Waukesha Pump is a positive displacement pump and thus can develop very high pressures.
To protect lines, equipment and personnel, certain precautions must be taken.
1. Review Section II, page 7, particularly “Relief Valves". Install relief valves if needed in system.
2. Check that piping and pump are clean and free of foreign material, such as welding slag,
gaskets, etc. Do not use pump to flush system.
3. See that all piping connections are tight and leak-free. Where possible, check system with
“non-hazardous” fluid.
4. Check to see that pump and drive are lubricated. See Section V, page 15. Check Drive
Lubrication Instruction.
5. Check that all guards are in place and secure.
6 Seals: Double mechanical and double O-ring seals with flushing require adequate supply and
flow of clean flushing fluids.
7. See that all valves are open on discharge system, and that free flow path is open to
destination.
8. See that all valves are open on inlet side, and that fluid can reach pump.
9. Check direction of pump and drive rotation. (See page 9)
10. Start pump drive. Where possible, start at slow speed, or jog.
Check to see that liquid is reaching pump within several minutes. If pumping does not begin and
stabilize, check items under “No Flow” or “Insufficient Flow” in Section IV, (Page 11)

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95-03012
WARNING
TO AVOID SERIOUS INJURY, DO NOT
INSTALL OR SERVICE PUMP UNLESS
ALL POWER IS OFF AND LOCKED OUT.
WARNING
TO AVOID POSSIBLE SERIOUS INJURY,
SHUT OFF AND DRAIN PRODUCT FROM
PUMP PRIOR TO DISCONNECTING PIPING.
No flow, pump Drive motor not running Check resets, fuses, circuit
not turning breakers
Keys sheared or missing Replace
Drive belts, power transmission Replace or adjust
components slipping or broken
Pump shaft, keys, or gears Inspect: replace parts
sheared
No flow, pump Wrong direction of rotation Reverse direction
turning
No flow, pump Valve closed in inlet line Open valve
not priming
Inlet line clogged or restricted Clear line, clean filters, etc.
Air leaks due to bad seals or pipe Replace seals; check lines for
connections leakage (can be done by air
pressure or by filling with liquid
and pressurizing with air)
Pump speed too slow Increase speed. Filling inlet lines
with fluid may allow initial
start-up. Foot valve may solve
start-up problems permanently.
Liquid drains or siphons from Use foot valve or check valves
system during off periods
SECTION IV
TROUBLESHOOTING A PUMPING SYSTEM
Once a pump is properly selected and installed in a system, operation should be trouble free. However, in
existing systems, or as pump and system conditions change, problems may develop. Following are some
troubleshooting hints to help identify and solve problems.
Problem Probable Causes Solutions

12 95-03012
Problem Probable Causes Solutions
No flow, pump "Air" lock. Fluids which "gas off", Manual or automatic air bleed from
not priming or vaporize, or allow gas to come pump or lines near pump
out of solution during off periods
Extra clearance rotors, worn pump Increase pump speed, use foot
valve to improve priming
Net inlet pressure available too low Check NIPA, NIPR~, recalculate
system. Change inlet system as
needed.
On "Vacuum'' inlet system: On Install check valve in discharge line
initial start-up, atmospheric "blow
back'' prevents pump from
developing enough differential
pressure to start flow.
No flow Relief valve not properly adjusted, Adjust or clear valve
or held off seat by foreign material
(flow is being recirculated to inlet)
Insufficient flow Speed too low to obtain Check flow-speed curve
desired flow
Air leak due to bad seals or Replace seals, check inlet fittings.
pipe connections
Fluid vaporization Strainers, foot valves, inlet fittings Clear lines. If problem continues,
("starved'' pump inlet) or lines clogged inlet system may require change
Inlet line size too small, inlet line Increase inlet line size. Reduce length,
too long. Too many fittings minimize direction and size changes,
or valves. Foot valve, strainers reduce number of fittings.
too small .
NIPA too low Raise liquid level in source tank
NIPA too low Increase by raising or pressurizing
source tank
NIPA - Net Inlet Pressure Available at Pump
NIPR - Net Inlet Pressure Required by Pump
TROUBLESHOOTING

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95-03012
Problem Probable Causes Solutions
Fluid vaporization NIPA too Low Select larger pump size with
(''starved'' pump inlet) smaller NIPR
Fluid viscosity greater Reduce pump speed and accept
than expected lower flow, or change system to
reduce line losses.
Fluid temperature higher than Reduce temperature, reduce speed
expected (vapor pressure higher) and accept lower flow or change
system to increase NIPA
Insufficient flow. Fluid Relief valve not adjusted Adjust or clear
being bypassed or jammed
somewhere
Flow diverted in branch line, open Check system and controls
valve, etc.
Insufficient flow. Hot (HC) or extra clearance rotors Replace with standard clearance
High slip on '"cold'' fluid, and/or low rotors
viscosity fluid
Worn pump Increase pump speed (within limits).
Replace rotors, recondition pump.
High pressure Reduce pressure by system changes
Noisy operation Cavitation
High fluid viscosity, Slow down pump, reduce
High vapor pressure fluids, temperature, change system
High temperature
NIPA less than NIPR To increase NIPA or reduce NIPR,
see Engineering Manual
Air or gas in fluid
Leaks in pump or piping Correct leaks
Dissolved gas or naturally Minimize discharge pressure. Also
aerated products see "Cavitation'' above.
•Mechanical noises
Rotor to body contact
Improper assembly Check clearance with shims.
See page 34 and 35.
TROUBLESHOOTING

14 95-03012
TROUBLESHOOTING
Problem Probable Causes Solutions
Noisy operation • Rotor to body contact
Distortion of pump due to Reassemble pump or re-install
improper piping installation. piping to assure free running
Pressure higher than rated Reduce pressure if possible
Worn bearing Rebuild with new bearings.
Lubricate regularly
Worn gears Rebuild with new gears. Lubricate
regularly
Rotor to rotor contact
Loose or mis-timed gears. twisted Rebuild with new parts
shaft, sheared keys. worn splines
• Relief valve chattering Re-adjust, repair or replace
• Drive component noise-gear Repair or replace drive train
trains, chains, couplings,
bearings.
Pump requires • Higher viscous losses than If within pump rating, increase drive
excessive power expected size
(overheats, stalls.
high current draw,
breakers trip) • Higher pressure than Reduce pump speed, increase
expected line sizes
• Fluid characteristics
Fluid colder than expected. Heat fluid. insulate or heat trace
viscosity high lines. Use pump with more running
clearances.
Fluid sets up in line and pump Insulate or heat trace line.
during shut down Install "soft start" drive.
Install recirculating bypass system.
Flush with other fluid.
Fluid builds up on pump surfaces Use pump with more running
(example. latex, chocolate. clearance
fondants)
''Short'' pump High corrosion rate Upgrade material of pump
service life Pumping abrasives Larger pumps at slower speeds,
can help
Speeds and pressures higher Reduce speeds and pressures by
than rated changes in system
Worn bearings and gears due to Set up and follow regular
lack of lubrication lubrication schedule
Misalignment of drive and piping. Check alignment of piping. Check
Excessive overhung load or drive alignment and loads. (Page 9)
misaligned couplings.

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95-03012
OIL
ISO Grade 320, SAE 140
or AGMA Number 6EP
GREASE
NLGI Grade No. 2, EP, Lithium-based
lubricant is standard
DRIVE LUBRICATION
Refer to drive manufacturer's manual shipped with
unit.
*OIL CAPACITY (GEARS)
SHAFT
MODELTOP OR SIDE
BOTTOM MOUNT
5040 2 oz. (60 ml) 4 oz. (120 ml)
5050 6 oz. (170 ml)9.5 oz. (280 ml)
5060 6 oz. (170 ml)9.5 oz. (280 ml)
507011 oz.(320 ml) 20 oz.(600 ml)
508017 oz. (500 ml)44 oz. (1300 ml)
CLEANING
SECTION V
OPERATION
NOTE:All hot clearance rotors are identified with
an etched letter "H" on rotor hub.
OIL LEVEL
CLEANOUT
PLUG
OIL FILL
OIL FILL
OIL LEVEL
OIL
DRAIN
TOP SHAFT DRIVE
OIL FILL
BOTTOM SHAFT DRIVE
OIL LEVEL
BEARING GREASE
FITTINGS (4)
FRONT
MOUNTING POSITIONS
A
B
(Left hand or right hand shaft
as viewed from the front)
CSIDEMOUNT DRIVE
*Oil Capacities are shown for reference. Fill oil to oil
level line.
The Waukesha pump is designed to be completely disassembled for thorough and easy cleaning .Clean
the pump every day or at the end of a process. Disassemble the fluid head as outlined. Remove and
clean the O-rings, sleeves and pump seals. Where possibility of material "setting up" during shut down
exists, flushing with solvent or disassembly of fluid head and manual cleaning are required.
The Ductile Iron Pump should be coated with a rust preventative during extended shutdown periods and
prior to storage.
Normal operation covers a speed range of 0-600 RPM and pressure range of 0-200 PSI. Temperature
range with standard rotors is -40° to 200° F. and with hot clearance rotors, 180° to 300° F. (For operation
at higher temperatures, consult SPX FLOW.)
See START-UP CHECK LIST (Page 10) and TROUBLESHOOTING (Page 11-14) for additional operation
information.
LUBRICATION
The gears are factory lubricated with
ISO Grade 320 oil at the quantity
shown for top or bottom shaft mounts. If
you mount your pump other than top or
bottom shaft drive, check oil level.
The bearings are factory greased with NLGI
Grade No. 2, EP.
Change oil every 750 hours. If pump is installed
where moisture and condensation are heavy,
change oil more frequently.
Bearings must be greased every 750 hours or less
depending on moisture and condensation condi-
tions. Excess grease will accumulate in the gear
case and can be removed through the cleanout
hole covered with plastic plug.
NOTE:For hot or cold extremes use appropriate
lubricant as shown in the following tables.
12-18-15

16 95-03012
The following routine “look-feel” checks are to be
made by the system operator during shut-down
periods.
WARNING
Disconnect power from pump
drive before removing cover.
VISUAL CHECKS
CHECK ROTOR TIPS FOR WEARAND CLEAR-
ANCE
Removal required: Cover, Rotors; see pages
21-22
1. Indications of metal-to-metal contact between
rotor wings means the pump should be repaired
or replaced.
CHECK ROTOR SPLINES FOR WEAR
Cause Corrective Measure
Worn shaft spline .... Replace shaft.
Worn rotor spline .... Replace rotor.
NOTE: Usually both parts will wear. The usual
cause is a rotor which has been loose for extended
running periods.
CHECK ROTOR HUB END for signs of wear. (End
locks against the shaft shoulder.)
Cause Corrective Measure
Extended running
with loose rotor
retaining
bolts .................. Replace rotor or reshim shaft to
maintain back face clearance.
See Table 1 (Page 35) and
Section IX, (Page 26)
SECTION Vl
MAINTENANCE
GENERAL
In the maintenance of pumps it is important to recognize when parts are wearing excessively.
Detecting wear in the early stages will let you repair your pump at minimum cost and get it back
into operation at the earliest date.
Periodic cleaning and a simple “look-feel” inspection of your pump are recommended as good
operating procedures and as a means of detecting signs of trouble at an early stage. They require
only a few minutes and may save you an appreciable amount of money.
A more detailed maintenance inspection should be scheduled annually. SeeANNUAL
MAINTENANCE, Page 20. CLEARANCE BOTH SIDES
MUST BE EQUAL
SPLINE
SPLINE
AREA OF
WEAR

17
95-03012
SHOULDER
KEYWAY
SHAFT
KEY
NUT
30 LB.
30 LB.
3. CHECK SHAFT SHOULDER for deterioration.
(Rotor hub locates against.)
Cause CorrectiveMeasure
Loose rotor shaft........... Reshim or replace
to maintain correct
running clearances.
(See table 1, Page
35)
Loose gears.................. Remove gear and
inspect key, keyway
and shaft. If all are in
good condition, re-
assemble and retighten
gear retaining nuts to
specified torque. (See
Table 2. Page 35)
Worn gears...................... Replace gears.
Twisted shaft ................. Replace shaft.
"FEEL"CHECKS
GEAR/BEARINGCHECK
Removalrequired:Gearcaseoil,gearcover,gears.
Page 31
1. Gear Back Lash - If there is any free movement
when rotating either shaft without transmitting
motion to other shaft, the back lash is excessive.
Cause Corrective Measure
Worn gear teeth.............. Replace gear.
Gear loose on shaft ........ Remove gear and
inspect key, keyway
and shaft. If all are in
good condition, re-
assemble and re-
tighten gear retaining
nuts to specified
torque. (See Table 2.
Page 35)
NOTE: Replace oil seal in cover when assembling.
CHECKBEARINGCONDITION
Removalrequired;FluidHeadAssemblyandSeals
Pages 21-22
2. Bearing Condition - If movement of either shaft
can be detected when hand loading the rotor end
of the shaft (approximately 30 Ibs. force applied
as illustrated), bearing may be failing.
Cause CorrectlveMeasure
Lack of lubricant or
high overload................ Replace bearings and
review lubrication
schedule. (Page 15)
Check for means to
reduce hydraulic loads.

18 95-03012
SEALMAINTENANCE
1. Packing Seal
a. To suit the required service, a variety of
packing materials and replaceable shaft
sleeves are available. Standard packing
material is braided teflon-compounds.
Standard sleeves are 316 stainless; optional
sleeves of ceramic coated stainless are
available.
b. External adjustment with gland nuts will
maintain sealing until worn packing can be
conveniently replaced.
c. New packing ring can be installed by
loosening gland, sliding it back and insert-
ing packing into the cavity in front of gland.
d. DO NOT TIGHTEN GLAND EXCESSIVELY.
A small amount of liquid leakage is normal
for packing lubrication.
c. Remove packing retainers with a screwdriver.
d. Turn body over, remove gland and use a
dowel and soft hammer to drive packing rings
from body.
PackingReplacement
a. To facilitate repacking, disassemble the fluid head
assembly from bearing gear case.
(See Section Vlll, page 21)
b. Clean and inspect shaft sleeves; if worn, remove
and replace both sleeve and shaft O-ring.
REMOVABLE SLEEVE
SHAFT O-RING
STOP PIN
GLAND
NUT PACKING
SLEEVE
DOWEL
PACKING
RINGS
FLUID HEAD
ASSEMBLY
LIFT
& PULL
TAB
NOTE: Seat Retainer may also be called gland.