DreamGEAR HY13-1518-M1-USA User Manual
HY13-1518-M1/USA
Hydraulics
TK Series
Service Procedure
Effective: July , 2001
Low Speed High Torque,
Hydraulic Motors
HY13-1518-M1/USA
Low Speed High Torque, Hydraulic Motors
TK Series
WARNING
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 Hannifin 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 final 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, specifications, designs, availability and pricing, are subject to
change by Parker Hannifin Corporation and its subsidiaries at any time without notice.
Offer of Sale
The items described in this document are hereby offered for sale by Parker Hannifin Corporation, its subsidiaries or its authorized distributors.
This offer and its acceptance are governed by the provisions stated in the "Offer of Sale".
Copyright 2001 Parker Hannifin Corporation, All Rights Reserved
2
Hydraulics
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
Table of Contents
Low Speed High Torque, Hydraulic Motors
TK Series
Definitions...............................................................................................................................................................3
Design Features......................................................................................................................................................4
Introduction .............................................................................................................................................................5
Troubleshooting Guide.............................................................................................................................................6
Troubleshooting Checklist .......................................................................................................................................7
T ools and Material Required for Servicing................................................................................................................8
Bolt T orque ..............................................................................................................................................................9
Exploded Assembly View...................................................................................................................................... 10
TK Service Parts List Chart ..................................................................................................................................11
Disassembly & Inspection ............................................................................................................................... 12-19
T orqmotor Assembly ........................................................................................................................................20-27
Final Checks.........................................................................................................................................................28
Hydraulic Fluid ......................................................................................................................................................28
Filtration................................................................................................................................................................28
Oil T emperature .....................................................................................................................................................28
Tips for Maintaining the System............................................................................................................................29
Offer of Sale .........................................................................................................................................................31
Definitions
NOTE: A NOTE provides key information to make a procedure easier or quicker to complete.
CAUTION: A CAUTION refers to procedure that must be followed to avoid damaging the Torqmotor or other system
components.
WARNING: A W ARNING REFERS T O PROCEDURE THAT MUST BE FOLLOWED FOR THE SAFETY OF THE
EQUIPMENT OPERA T OR AND THE PERSON INSPECTING OR REP AIRING THE TORQMOTOR.
Disclaimer
This Service Manual has been prepared by Parker Hannifin for reference and use by mechanics who have been trained to
repair and service hydraulic motors and systems on commercial and non-commercial equipment applications. Parker
Hannifin has exercised reasonable care and diligence to present accurate, clear and complete information and instructions
regarding the techniques and tools required for maintaining, repairing and servicing the complete line of Parker TK
Torqmotor Units. However, despite the care and effort taken in preparing this general Service Manual, Parker makes no
warranties that (a) the Service Manual or any explanations, illustrations, information, techniques or tools described herein
are either accurate, complete or correct as applied to a specific Torqmotor unit, or (b) any repairs or service of a particular
Torqmotor unit will result in a properly functioning Torqmotor unit.
If inspection or testing reveals evidence of abnormal wear or damage to the Torqmotor unit or if you encounter circumstances
not covered in the Manual, STOP – CONSULT THE EQUIPMENT MANUFACTURER’S SERVICE MANUAL AND WARRANTY. DO NOT TRY TO REP AIR OR SER VICE A TORQMOTOR UNIT WHICH HAS BEEN DAMAGED OR INCLUDES ANY
P ART THAT SHOWS EXCESSIVE WEAR UNLESS THE DAMAGED AND WORN PARTS ARE REPLACED WITH ORIGINAL
P ARKER REPLACEMENT AND SERVICE PAR TS AND THE UNIT IS RESTORED TO PARKER SPECIFICA TIONS FOR THE
TORQMOTOR UNIT.
It is the responsibility of the mechanic performing the maintenance, repairs or service on a particular Torqmotor unit to (a)
inspect the unit for abnormal wear and damage, (b) choose a repair procedure which will not endanger his/her safety, the
safety of others, the equipment, or the safe operation of the Torqmotor, and (c) fully inspect and test the Torqmotor unit and
the hydraulic system to insure that the repair or service of the Torqmotor unit has been properly performed and that the
Torqmotor and hydraulic system will function properly.
Hydraulics
3
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
Torqmotor Design Features
COUPLING SHAFT
Low Speed High Torque, Hydraulic Motors
TK Series
HIGH PRESSURE SEAL
HOUSING
HEA VY DUTY
DRIVE LINK
TOOTH SPLINE
DIRT & W ATER SEAL
HEA VY DUTY
BEARING
HIGH SPEED COMMUT AT OR
MA TCHED ROTOR SET
TK Series features include:
• The roller vane rotor set design offers low-friction and wear compensation which maximizes the useful performance
life of the motor.
• Zero leak commutation valve provides greater, more consistent volumetric efficiency.
• Heavy duty spline geometry.
• Flow thru lubrication provides cooling extending motor life.
• Full interchangeability with other motors which are designed according to industry standards.
• Compatible with most hydraulic systems with regard to pressure, torque and speed.
• A unique high-pressure shaft seal that eliminates the need for case drains.
• Up to 73 horsepower output.
• Heavy duty roller bearings for high side loads.
Hydraulics
4
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
Introduction
Low Speed High Torque, Hydraulic Motors
TK Series
This service manual has one purpose: to guide you in
maintaining, troubleshooting, and servicing the TK
T orqmotor (low-speed, high-torque hydraulic motor).
Material in this manual is organized so you can work on
the T orqmotor and get results without wasting time or
being confused. T o get these results, you should read
this entire manual before you begin any work on the
Torqmotor.
This manual also contains troubleshooting information
and checklist. If you must service the Torqmotor, the
checklist will help you to determine where the problem
may be.
The three-column format of the Disassembly and
Inspection, and Assembly sections will make it easier
for you to conduct major work on the Torqmotor. Column
1 gives a brief key for each procedure. Column 2
explains in detail the procedure you should follow.
Column 3 illustrates this procedure with photographs.
Read all material carefully and pay special attention to
the notes, cautions, and warnings.
A page with the T orqmotor exploded assembly view is
provided several places in this manual. The component
part names and item numbers assigned on this exploded assembly view correspond with names and item
numbers (in parentheses) used in the disassembly and
assembly procedures set forth in this manual.
Service part list charts are also provided in this manual
with the part names and exploded view item numbers
cross referenced to Parker service part numbers.
Service parts are available through the Original Equipment Manufacturer or Parker approved TK Distributors.
As you gain experience in servicing the T orqmotor , you
may find that some information in this manual could be
clearer or more complete. If so, let us know about it. Do
not try to second guess the manual. If you are stuck,
contact us. Servicing the T orqmotor should be a safe and
productive procedure, in order for the unit to deliver the
reliable, long-life operation engineered into it.
Hydraulics
5
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
Troubleshooting Guide
NOTE: Before troubleshooting any system problem, check service literature published by the equipment and/or
component manufacturers. Follow their instructions, if given, for checking any component other than the T orqmotor
unit.
Low Speed High Torque, Hydraulic Motors
TK Series
Preparation
Make your troubleshooting easier by preparing as
follows:
• work in a clean, well-lighted place;
• have proper tools and materials nearby;
• have an adequate supply of clean petroleum-based
solvent.
WARNING: SINCE SOL VENTS ARE FLAMMABLE, BE
EXTREMEL Y CAREFUL WHEN USING ANY SOLVENT, EVEN A SMALL EXPLOSION OR FIRE COULD
CAUSE INJURY OR DEA TH.
WARNING: WEAR EYE PROTECTION AND BE SURE
TO COMPL Y WITH OSHA AND OTHER MAXIMUM AIR
PRESSURE REQUIREMENTS.
Preliminary Checks
Hydraulic systems are often trouble-free. Hence, the
problem an operator complains of could be cause by
something other than the hydraulic components.
Thus, once you have determined that a problem exists,
start with the easy-to-check items, such as:
• parts damaged from impact that were not properly
repaired, or that should have been replaced; and
• improper replacement parts used in previous
servicing
• mechanical linkage problems such as binding,
broken, or loose parts or slipping belts
Hydraulic Components
If you think the problem is caused by a hydraulic
component, start by checking the easy-to-reach items.
Check all hoses and lines for cracks, hardening, or
other signs of wear . Reroute any usable hoses that are
kinked, severely bent, or that rest against hot engine
parts. Look for leaks, especially at couplings and
fittings. Replace any hoses or lines that don’t meet
system flow and pressure ratings.
Next, go to the reservoir and filter or filters. Check fluid
level and look for air bubbles. Check the filter(s). A filter
with a maximum 50 micron filtration is recommended for
the T orqmotor system.
Visually check other components to see if they are
loosely mounted, show signs of leaks, or other damage
or wear.
Excessive heat in a hydraulic system can create
problems that can easily be overlooked. Every system
has its limitation for the maximum amount of temperature. After the temperature is attained and passed, the
following can occur:
• oil seal leaks
• loss of efficiency such as speed and torque
• pump loss of efficiency
• pump failure
• hoses become hard and brittle
• hose failure
A normal temperature range means an efficient hydraulic system. Consult the manuals published by equipment and/or component manufacturers for maximum
allowable temperature and hydraulic tests that may be
necessary to run on the performance of the hydraulic
components. The Torqmotor is not recommended for
hydraulic systems with maximum temperatures above
200°F (93.3°C).
Hydraulics
6
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
Troubleshooting Checklist
Low Speed High Torque, Hydraulic Motors
TK Series
Trouble Cause Remedy
Oil Leakage Check & replace damaged
Significant loss of
speed under load
1 .Hose fittings loose, worn or
damaged.
2.Oil seal rings (5) deteriorated by
excess heat.
3.Special bolt (1)
loose or its sealing area
deteriorated by corrosion.
4.Internal shaft seal (18) worn or
damaged.
5.Worn coupling shaft (14) and
internal seal (18).
1.Lack of sufficient oil supply
fittings or “O” Rings. Torque to
manufacturers specifications.
Replace oil seal rings by disassembling
T orqmotor unit.
(a ) Loosen then tighten single bolt to
torque specification.
(b ) Replace bolt.
Replace seal. Disassembly of T orqmotor unit
necessary.
Replace coupling shaft and seal by
disassembling T orqmotor unit.
(a ) Check for faulty relief valve and
adjust or replace as required.
(b ) Check for and repair worn pump.
(c) Check for and use correct oil for
temperature of operation.
Low mechanical
efficiency or undue
high pressure
required to operate
T orqmotor unit
2.High internal motor leakage
3.Severely worn or damaged
internal splines.
4.Excessive heat.
1 .Line blockage
2.Internal interference
3.Lack of pumping pressure
4.Excessive binding or loading in
system external to T orqmotor
unit.
Replace worn rotor set by disassembling
T orqmotor unit.
Replace rotor set, drive link and coupling
shaft by disassembling T orqmotor unit.
Locate excessive heat source (usually a
restriction) in the system and correct the
condition.
Locate blockage source and repair or
replace.
Disassemble T orqmotor unit, identify and
remedy cause and repair, replacing parts as
necessary.
Check for and repair worn pump.
Locate source and eliminate cause.
CAUTION: If the hydraulic system fluid becomes overheated [in excess of 200°F (93.3°C)], seals in the system
can shrink, harden or crack, thus losing their sealing ability .
7
Hydraulics
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
T ools and Materials Required for Servicing
• Clean, petroleum-based solvent
• Emery paper
• Vise with soft jaws
• Air pressure source
• Arbor press
• Screw driver
• Masking tape
• Breaker bar
• T orque wrench-ft. lbs. (N m)
• Sockets: 1/2 or 9/16 inch thin wall, 1 inch
• Allen Sockets: 3/16, 3/8 inch
• Adjustable crescent wrench or hose fitting wrenches
• SAE 10W40 SE or SF oil
• Special bearing mandrel for TK T orqmotor (SEE FIGURE 1)
• Feeler gage .005 inch (.13 mm)
• TK Torqmotor requires blind hole bearing puller for a 1.750 inch dia. (44.45 mm) and 2.750 inch dia. (69.85 mm)
bearings.
• Clean corrosion resistant grease. Part #406018 is included in each seal kit. Recommended grease is Parker
Specification #045236 or Mobil Mobilith SHC® 460
Low Speed High Torque, Hydraulic Motors
TK Series
NOTE: The available service seal kits include the recommended grease as a grease pack #406018
CAUTION: Mixing greases that have different bases can be detrimental to bearing life.
Hydraulics
8
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
T echnical Information
INCHES mm INCHES mm
.020 .51 1.060 26.92
.021 .53 1.295 32.89
.029 .74 1.297 32.94
.030 .76 1.396 35.46
.111 2.81 1.398 35.51
.119 3.02 1.620 41.15
.152 3.86 1.622 41.20
.160 4.06 1.983 50.37
.296 7.52 1.985 50.42
.304 7.72 2.120 53.85
.460 11.68 2.122 53.90
.470 11.94 2.233 56.72
.500 12.70 2.235 56.77
.585 14.86 2.483 63.07
.595 15.11 2.485 63.12
.660 16.76 2.500 63.5
.675 17.15 2.88 73.2
1.058 26.87
Low Speed High Torque, Hydraulic Motors
TK Series
CONVERSIONS
Torque Chart
Part Name Item Number T orque
bolt 3/8 24 UNF 2A 1 45-55 ft. lbs. (60-76 N m)
nut 1-1/4 18 UNEF 2B 14 b 350-450 ft. lbs. (475-610 N m)
.420"
.410"
.150
.130
3.122
3.60
3.120
2.748
2.746
1.748
1.746
2.988
2.986
Hydraulics
(Fabricate if considered necessary)
Figure 1
9
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
HY13-1518-M1/USA
Exploded View
Typical Assembly
Low Speed High Torque, Hydraulic Motors
TK Series
11
23
22
14a
21
20
19
18
10
16
9b
17
14b
13
5
12
14
1
15
16
3
9a
4
5
2
6
5
7
8
9c
9
Matched
Set
5
Item No. Description
1 Special Bolt
2 Endcover
3 Seal Ring - Commutator
4 Commutator
5 Seal Ring
6 Manifold
7 Retaining Ring
8 Rotor Washer
9 Rotor Set
9a Rotor
9b Stator
9c Vane (9)
10 Wear Plate
11 Drive Link
12 Retaining Washer
13 Thrust Bearing
14 Coupling Shaft
14a Key
14b Nut
15 Radial Bearing
16 Thrust Washer
17 Thrust Bearing
18 Shaft Seal
19 Back Up Washer
20 Back Up Ring
21 Housing
22 Radial Bearing
23 Dirt & Water Seal
Note: See “Service Parts List Chart” page 11 for all part numbers.
10
Hydraulics
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
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