Parker 700 Series Manual
Bulletin SM1531-001/US
Pump/Motor Division
Effective: May 2006
700 Series
Low Speed
High Torque
Service Procedure
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
2
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED
ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This document and other information from Parker Hannin Corporation, its subsidiaries and authorized distributors provide product and/or
system options for further investigation by users having technical expertise. It is important that you analyze all aspects of your application
and review the information concerning the product or system in the current product catalog. Due to the variety of operating conditions and
applications for these products or systems, the user, through its own analysis and testing, is solely responsible for making the nal selection
of the products and systems and assuring that all performance, safety and warning requirements of the application are met.
The products described herein, including without limitation, product features, specications, designs, availability and pricing, are subject to
change by Parker Hannin Corporation and its subsidiaries at any time without notice.
WARNING
The items described in this document are hereby offered for sale by Parker Hannin Corporation, its subsidiaries or its authorized distributors.
This offer and its acceptance are governed by the provisions stated in the "Offer of Sale".
Copyright 2006, Parker Hannin Corporation, All Rights Reserved
Offer of Sale
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
3
Table of Contents
Contents
Introduction ................................................................................................................. 4
Troubleshooting Guide ............................................................................................. 5-6
Tools & Materials Required for Maintenance .............................................................. 7
Service Parts List ................................................................................................... 8-10
Exploded Views .................................................................................................... 11-13
Disassembly & Inspection .................................................................................... 14-15
Assembly .............................................................................................................. 16-17
Final Checks ............................................................................................................. 18
Maintenance Tips ...................................................................................................... 19
Offer of Sale .............................................................................................................. 20
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
4
Introduction
The 700 series Low Speed High Torque (LSHT) hydraulic motor is designed to provide
long life while operating with low radial side loads. Refer to catalog radial load limits. However, should
maintenance be required, the instructions below should be used for disassembly, replacement of parts,
cleaning and assembly.
Read the trouble shooting information to eliminate non-hydraulic causes and hydraulic system problems. The
check list identies hydraulic system and possible motor component problems. Read all disassembly and
assembly sections carefully. Pay special attention to the notes, cautions and warnings.
The component part names and item numbers assigned on the exploded assembly views corresponds with
names and item numbers (in parentheses) used in the disassembly and assembly procedures. Refer to the
exploded assembly view page as you follow the procedures for ease in identifying and locating components.
Service part number charts display exploded view item numbers and part numbers.
Obtain service parts from the Original Equipment Manufacturer or your local Parker Distributor.
We welcome suggestions to make this manual clearer or more complete. If you are stuck, please contact our
customer service department. Don't second guess the manual. Following this safe and productive procedure
results in restoring the reliable, long-life operation engineered into the motor.
Important Notes:
Prior to any motor disassembly, plug the open ports and case drain. Clean all dirt from the outside of
the motor.
Prior to assembly lightly oil all seals, the rollers and the threaded bolt ends.
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
5
Preliminary Checks
Hydraulic systems are often trouble-free. Hence, the
problem an operator complains of could be caused by
something other than the hydraulic components.
Thus, once you have determined that a problem ex-
ists, start with the easy-to-check items, such as:
• Parts damaged from impact that were not
properly repaired, or that should have been
replaced
• Improper replacement parts used in previous
servicing
• Mechanical linkage problems such as bind-
ing, broken or loose parts, or slipping belts
Hydraulic Components
If the motor has low speed or torque, look at the check
list on the next page rst. Since these motors maintain
volumetric and torque efciencies during their usual
life, the problem is usually elsewhere in the hydraulic
system.
However, there are hydraulic system problems which
can drastically reduce the long life designed into these
motors. Three key areas to check are:
• Temperature: Do not exceed 180˚F.
• Fluid: Viscosity at the maximum temperature
must exceed 50 ssu.
• Filtration: A Beta 25 ratio of at least 2.
Troubleshooting Guide
Preparation
Make your troubleshooting easier by preparing as fol-
lows:
• work in a clean, well-lighted place
• have proper tools and materials nearby
• have an adequate supply of clean, petro-
leum-based solvent
• prior to any motor disassembly, plug the
open ports and case drain
• clean all dirt from outside the motor
• prior to assembly, lightly oil all seals, rollers,
rolls and the threaded bolt ends
Since solvents are ammable, be
extremely careful when using any
solvent. Even a small explosion
could cause injury or death.
Wear eye protection and be sure
to comply with OSHA and other
maximum air pressure require-
ments.
WARNING
WARNING
NOTE Before troubleshooting any system prob-
lem, check service literature published
by the equipment and/or component
manufacturers. Follow their instructions, if
given, for checking any component other
than the motor unit.
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
6
Troubleshooting Checklist
Trouble
Oil Leakage
Signicant loss of
speed under load
Low mechanical
efciency or undue
high pressure
required to operate
motor
Cause
1. Hose ttings loose, worn
or damaged.
2. Motor section seal rings (7)
deteriorated by excess heat.
3. Tie bolt loose
4. Broken tie bolts.
5. Internal shaft seal worn or
damaged.
6. Worn shaft and internal seal.
1. Lack of sufcient oil supply.
2. High internal motor leakage.
3. Excessive heat.
1. Line blockage.
2. Internal interference.
3. Excessive binding or loading
in system external to motor.
1. Low ow output of pump.
2. Relief valve set incorrectly or
not closing completely.
Check & replace damaged "O"
Rings. Torque to manufacturer's
specications.
Replace oil seal rings. Correct heat
problem.
If bolts are loose because of
excessive pressures as indicated
by most or all being loose, replace
bolts & advise customer to correct
the pressure regulation.
Replace bolts.
Replace seal.
Replace shaft and seal.
(a) Check for faulty relief valve
and adjust/replace as required.
(b) Check for/repair worn pump.
(c) Check for and use correct
oil for temperature of
operation. Check reservoir
uid level.
Replace worn IGR™ set.
Locate excessive heat source
(usually a restriction or lack of an
oil cooler) and correct.
Locate blockage source and repair
or replace.
Disassemble motor, identify and
remedy cause.
Locate source and eliminate
cause.
Repair or replace worn pump.
Reset relief, look for contamination
or replace.
Remedy
Lack of pressure
CAUTION Seals in the system will shrink, harden or crack if uid tem-
peratures exceed 180˚F (82.2˚C), resulting in loss of ability to
seal.
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
7
Tools and Materials Required for Servicing
• Clean, petroleum-based solvent
• Emery paper
• Vice with soft jaws
• Air-pressure source
• Screwdriver
• Tape
• Breaker bar or impact wrench
• Torque wrench 50 ft. lbs.
• Socket, 1/2"
• Allen wrench, 1/4"
• Adjustable crescent wrench or hose tting wrenches
Mixing greases that have different bases can be
detrimental to bearing life.
CAUTION
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
8
Item No. Qty Part Number Description
1 8 See Following Page Bolts
2 1 M110C-6 4 Dowel End Cover (standard)
1 M110C-23 Encoder End Cover, 4 Dowel End Cover BSPP
3 6 1046 O-Rings
4 1 See Following Page IGR™ Set, Rear
5 2 1660 Clip, 2 Pieces
6 1 See Following Page Shaft, Internal
7 2 SM015995 Commutator Plate
8 4 1021 Check Ball
9 1 See Following Page Center Block
10 4 25060-09 Bolt, 5/16-18x1.00, G8
11 1 See Following Page Shaft, Output
12 1 PA-2984-1 1.25" Shaft "A" Flange (with seals)
1 PA-2984-2 1.25" Shaft "B" Flange (with seals)
13 1 1060-34 O-Ring Flange, 2-034
14 2 040230-0565 Dowel
15 8 See Following Page Bolt
16 1 See Following Page Front Bearing Housing
17 1 See Following Page IGR™ Set, Front
18 2 036300 7/8-14 SAE Plug
19 1 1826 Spring, Two Speed Valve Return Spring
20 1 1825 or 2792 Valve - 1825 Open Center
2792 Closed Center
21 4 1320 Check Balls-Solenoid Block
22 5 032841 O-Rings-Solenoid Block
23 1 1823 Solenoid Block (Aluminum)
24 1 481006 Solenoid-With Manual Override
1 2891 Solenoid-Without Manual Override
25 2 021442 Bolt, 5/16-24 x 1.875"
26 1 2271 1.25" Dia. Shaft Thrust Washer
27 1 2270 1.25" Dia. Shaft Thrust Bearing
28 1 2150 1.25" Dia. Shaft Seal, High Pressure
29 1 1435 1.25" Dia. Shaft Seal, Dust, 1.312"
30 1 1323 1" Dia. Shaft Thrust Washer
31 1 1585 1" Dia. Shaft Thrust Bearing (pressed into ange)
32 1 2175 1" Dia. Shaft Seal, High Pressure, 1.063"
33 1 1325 1" Dia. Shaft Seal, Dust, 1.062"
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
9
Motor Item 6 Item 17 Item 4 Item 1 Item 15
Disp. Shaft IGR™ Set IGR™ Set Hex Bolt 12 Point Flange
Head Screw
Standard (encoder)
12.9/25.8 2865-258 (2249) SM012907005A2 SM012907008A1 021363 021457
10.6/21.2 2865-212 (2249) SM010607005A2 SM010607008A1 021428 021456
8.8/17.6 2865-176 (2249) SM008807005A2 SM008807008A1 021356 021455
7.1/14.2 2865-142 (2249) SM007107005A2 SM007107008A1 021306 021454
5.4/10.8 2865-108 (2249) SM005407005A2 SM005407008A1 021382 021453
3.6/7.2 2865-072 (2249) SM003607005A2 SM003607008A1 021437 021452
Item 16 Item 9 Item 11
Bearing Housing Center Block Shaft, Output
SL012004A1 1" Dia. Shafts
(1/4-19 BSPP) SM012002A1 SL019012, 1" Key
(7/8-14 O-Ring, SL019020, 6B Spline
Pilot Act.) SL019013, 25mm Key
SL012003A1 SL019017, 7/8" 13T Spline
(7/16-20 O-Ring) SM012001A1
(7/8-14 O-Ring
Solenoid)
1.25" Dia. Shafts
SM012003A1 SL019014 ,1.25" Key
(BSPP Pilot Act.) SL019015, 1.25" Taper
SL019016, 1.25" 14T Spline
SM012004A1 SL019018, 32mm Key
(BSPP Solenoid)
PA-2817
(Manifold, Pilot Act.)
1" Output Shafts
Seal Kit - Complete: SK000202
Includes: P/N Qty Description
1046 6 Body O-Rings
1060-34 1 Flange O-Ring, Item 13
1325 1 Dust Seal
2175 1 1.063" High Pressure Seal
032844 5 Solenoid Block O-Rings
1585 1 Thrust Bearing (presses in ange)
1.25" Output Shafts
Seal Kit - Complete: SK000203
Include: P/N Qty Description
1046 6 Body O-Rings
1060-34 1 Flange O-Ring, Item 13
1435 1 Dust Seal
2150 1 1.311" High Pressure Seal
032844 5 Solenoid Block O-Rings
Bulletin 1531-001/USA Pump/Motor Division
700 Series Service Procedure
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
10
Change for All 700 Series motors with 1" diameter shafts
and date codes through 091-96 (3/31/96)
Change: New seal kit and outputs for 700 Series, 1" diameter shaft motors
Summary: Starting 092-96 (4/1/96) all 700 Series motors will use the 1.25" diameter type "A" and "B" ange and
the same seal kit regardless of shaft diameter size.
Description Not Available Replace With
After 3/31/96
(1" Dia. Parts) (1.25" Dia. Parts)
"A" Flange (including seats) PA-2983-1 PA-2984-1
"B" Flange (including seats) PA-2983-2 PA-2984-2
1" Keyed Shaft 2970-0 SL019000
1" 6B Spline Shaft 2970-1 SL019011
25mm Keyed Shaft 2970-2 SL019002
78" 13T Spline Shaft 2970-6 SL019006
SK000202 Seal Kit for 1" type shafts prior to 092-96 (4/1/96)
SK000203 Seal kit for all other type 700 series
2270 Thrust bearing (required when converting from 2970-X)
2271 Thrust washer (required when converting from 2970-X)
NOTE: Replacement shafts for any fo the above mentioned motors manufactured on or before 091-6 (3/31/96)
must be ordered with a 1.25" type ange. The 1" diameter type anges wll no longer be available. Also, the 1.25"
diameter type thrust bearing 2270 and thrust washer 2271 must be ordered to complete the change over.
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