Parker Hydraulics TK Series Manual

HY13-1518-M1/USA
TK Series
Service Procedure
Hydraulics
Effective: July, 2001
Low Speed High Torque,
Hydraulic Motors

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
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 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.
WARNING
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
OfferofSale

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
3
Definitions...............................................................................................................................................................3
DesignFeatures......................................................................................................................................................4
Introduction .............................................................................................................................................................5
TroubleshootingGuide .............................................................................................................................................6
TroubleshootingChecklist .......................................................................................................................................7
Toolsand MaterialRequired forServicing................................................................................................................8
BoltTorque ..............................................................................................................................................................9
ExplodedAssembly View......................................................................................................................................10
TK Service Parts List Chart ..................................................................................................................................11
Disassembly & Inspection ............................................................................................................................... 12-19
TorqmotorAssembly ........................................................................................................................................ 20-27
FinalChecks.........................................................................................................................................................28
HydraulicFluid ......................................................................................................................................................28
Filtration................................................................................................................................................................28
OilTemperature .....................................................................................................................................................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: AWARNING REFERS TO PROCEDURETHAT MUST BE FOLLOWED FORTHE SAFETY OF THE
EQUIPMENT OPERATORANDTHE PERSON INSPECTING OR REPAIRING 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 MANUALAND WAR-
RANTY. DO NOTTRY TO REPAIR OR SERVICEATORQMOTOR UNIT WHICH HAS BEEN DAMAGED OR INCLUDESANY
PART THAT SHOWS EXCESSIVE WEAR UNLESS THE DAMAGEDAND WORN PARTSARE REPLACED WITH ORIGINAL
PARKER REPLACEMENT AND SERVICE PARTSAND THE UNIT IS RESTORED TO PARKER SPECIFICATIONS FOR THE
TORQMOTORUNIT.
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.
Table of Contents

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
4
Torqmotor Design Features
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.
COUPLINGSHAFT
HIGHPRESSURESEAL
HOUSING
HEAVYDUTY
DRIVELINK
TOOTHSPLINE
DIRT&WATER SEAL
HEAVYDUTY
BEARING
MATCHEDROTORSET
HIGHSPEEDCOMMUTATOR

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
5
Introduction
This service manual has one purpose: to guide you in
maintaining,troubleshooting, andservicing theTK
Torqmotor(low-speed,high-torquehydraulic motor).
Material in this manual is organized so you can work on
theTorqmotorand get resultswithout wastingtime or
beingconfused.To get theseresults, you shouldread
this entire manual before you begin any work on the
Torqmotor.
Thismanual alsocontains troubleshootinginformation
and checklist. If you must service the Torqmotor, the
checklist will help you to determine where the problem
may be.
Thethree-column format of theDisassembly and
Inspection, and Assembly sections will make it easier
foryou toconduct major workon theTorqmotor.Column
1 gives a brief key for each procedure. Column 2
explainsin detailthe procedure youshould follow.
Column3 illustratesthis procedurewith photographs.
Read all material carefully and pay special attention to
the notes, cautions, and warnings.
Apage with the Torqmotor exploded assembly view is
providedseveral placesin this manual.The component
part names and item numbers assigned on this ex-
plodedassembly view correspondwith namesand item
numbers(in parentheses) usedin thedisassembly 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.
Serviceparts are available through theOriginal Equip-
mentManufacturer orParker approvedTKDistributors.
Asyou gainexperience inservicing theTorqmotor,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,
contactus. ServicingtheTorqmotor should bea safeand
productiveprocedure, in orderfor theunit todeliver the
reliable,long-lifeoperationengineeredintoit.

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
6
NOTE:Before troubleshooting any system problem,check service literature published bythe equipment and/or
componentmanufacturers. Follow their instructions, ifgiven, for checkingany component other than theTorqmotor
unit.
Preparation
Makeyour troubleshootingeasier bypreparing as
follows:
•work in a clean, well-lighted place;
•haveproper toolsand materials nearby;
•havean adequatesupply ofclean petroleum-based
solvent.
WARNING: SINCE SOLVENTSARE FLAMMABLE, BE
EXTREMELYCAREFULWHEN USINGANYSOL-
VENT, EVENASMALL EXPLOSION OR FIRE COULD
CAUSEINJURYORDEATH.
WARNING:WEAR EYEPROTECTIONAND BESURE
TOCOMPLYWITH OSHAAND OTHER MAXIMUMAIR
PRESSUREREQUIREMENTS.
Preliminary Checks
Hydraulicsystems are often trouble-free. Hence,the
problem an operator complains of could be cause by
somethingother thanthe 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 thatshould havebeen replaced; and
•improperreplacement partsused in previous
servicing
•mechanicallinkage 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
othersigns of wear. Reroute any usable hosesthat 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
theTorqmotorsystem.
Visually check other components to see if they are
loosely mounted, show signs of leaks, or other damage
orwear.
Excessive heat in a hydraulic system can create
problems that can easily be overlooked. Every system
has its limitation for the maximum amount of tempera-
ture. After the temperature is attained and passed, the
followingcan occur:
•oil seal leaks
•loss of efficiency such as speed and torque
•pump loss of efficiency
•pumpfailure
•hosesbecome hardand brittle
•hosefailure
Anormal temperaturerange meansan efficienthydrau-
lic system. Consult the manuals published by equip-
mentand/or componentmanufacturers formaximum
allowabletemperature and hydraulictests that may be
necessary to run on the performance of the hydraulic
components.TheTorqmotor isnot recommended for
hydraulic systems with maximum temperatures above
200°F(93.3°C).
Troubleshooting Guide

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
7
Troubleshooting Checklist
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
deterioratedbycorrosion.
4.Internal shaft seal(18) worn or
damaged.
5.Worncoupling shaft(14) and
internalseal (18).
Oil Leakage Check& replacedamaged
fittingsor “O”Rings.Torqueto
manufacturersspecifications.
Replace oil seal rings by disassembling
Torqmotorunit.
(a) Loosen then tighten single bolt to
torquespecification.
(b) Replace bolt.
Replaceseal. DisassemblyofTorqmotor unit
necessary.
Replace coupling shaft and seal by
disassemblingTorqmotor unit.
Significant loss of
speed under load 1.Lack of sufficient oil supply
2.Highinternal motorleakage
3.Severelyworn ordamaged
internalsplines.
4.Excessive heat.
(a) Check for faulty relief valve and
adjustor replaceas required.
(b) Check forand repairworn pump.
(c) Check for and use correct oil for
temperatureofoperation.
Replaceworn rotor set by disassembling
Torqmotorunit.
Replace rotor set, drive link and coupling
shaftby disassemblingTorqmotor unit.
Locate excessive heat source (usually a
restriction) in the system and correct the
condition.
Low mechanical
efficiency or undue
high pressure
required to operate
Torqmotor unit
1.Lineblockage
2.Internalinterference
3.Lackof pumpingpressure
4.Excessive binding or loading in
systemexternal toTorqmotor
unit.
Locateblockage sourceand repairor
replace.
DisassembleTorqmotorunit, identifyand
remedycause and repair,replacing parts as
necessary.
Checkfor andrepair wornpump.
Locatesource and eliminatecause.
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.
Trouble Cause Remedy

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
8
•Clean,petroleum-basedsolvent
•Emerypaper
•Vise with soft jaws
•Airpressure source
•Arborpress
•Screwdriver
•Maskingtape
•Breakerbar
•Torquewrench-ft.lbs.(N m)
•Sockets: 1/2 or 9/16 inch thin wall, 1 inch
•Allen Sockets: 3/16, 3/8 inch
•Adjustablecrescent wrench or hose fitting wrenches
•SAE 10W40 SE or SF oil
•Specialbearing mandrelforTKTorqmotor (SEEFIGURE 1)
•Feelergage .005 inch (.13 mm)
•TKTorqmotor requiresblind hole bearing puller fora 1.750inch dia. (44.45 mm) and2.750 inchdia. (69.85 mm)
bearings.
•Cleancorrosion resistant grease. Part #406018is included in each sealkit. Recommended grease is Parker
Specification#045236 orMobil Mobilith SHC®460
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.
Tools and Materials Required for Servicing

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
9
CONVERSIONS
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
Torque Chart
Part Name Item Number Torque
bolt 3/8 24 UNF 2A 1 45-55ft. lbs.(60-76 N m)
nut 1-1/4 18 UNEF 2B 14b 350-450 ft.lbs. (475-610Nm)
(Fabricateif considerednecessary)
Figure1
Technical Information
3.60
3.122
3.120
2.748
2.746
1.748
1.746
2.988
2.986
.150
.130
.420"
.410"

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
10
14a 14b
23 22 21
20 19 18 16 17 16 15
14 13 12 5
11
9a
9b
9c
9
Matched
Set
10 5
875
1
2
3
4
5
6
Exploded View
Typical Assembly
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.

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
11
EXPLODED VIEW
ITEM # 14 14a 14b
COUPLING
DESCRIPTION SHAFT KEY NUT
32- 1-1/2" Straight Key TK019002 039040
36- 17 Tooth Spline TK019003
63- 1-3/4" Tapered Shaft TK019001 039049 025133
64- 40mm Straight Key TK019004 039050
For reverse timed manifold, use TK015001.
Standard seal kit SK000167 includes five #032 07 seal rings, #032 52 commutator seal, #032 50
inner seal, #02 549, #032 51 backup washer, backup ring, #47 0 2 dirt & water seal, #40601
grease pack and bulletin #050034.
EXPLODED VIEW
ITEM # 3 4 16
COMMUTATOR SEAL INNER
DESCRIPTION SEAL RING ( ) SEAL
Black Paint 032852 032807 032850
OPTION GROUP
Service Parts List Chart
Chart Use Example:
TK0200K5320AAAB Torqmotor includes part numbers listed to the right of TK (SERIES), 0200 (DISP.), K (MOUNTING), 5 (PORTING),
32 (SHAFT), 0 (ROTATION), and AAAB (OPTION) shown in the left hand column of the chart.
Caution:
The charted component service information is for the Torqmotors listed only. Refer to the original equipment manufacturer of the equipment
using the Torqmotor for assembly numbers not listed below.
EXPLODED VIEW
ITEM # 4 6 10 13 15 16 17 1 9 20 22 23
MANIFOLD WEAR THRUST INNER THRUST THRUST BA KUP BA KUP OUTER DIRT & WATER
DES RIPTION OMMUTATOR (SEE NOTE) PLATE BEARING BEARING WASHER(2) BEARING WASHER RING BEARING SEAL
TK-Service Part # TK014000 TK015000 477983 070029 073007 069033 (2) 070028 028549 032851 070027 478082
SERIES
EXPLODED VIEW
ITEM # 21
SERVICE HOUSING
DESCRIPTION HOUSING ASSEMBLY
K - S E CC (4 Bolt) TK012002 TK012002 1
T - Wheel Mt. (4 Bolt) TK012001 TK012001 1
EXPLODED VIEW
ITEM # 2
END
DESCRIPTION COVER
5 - Rear Port (1 5/16" O-Ring; Radial) TK016000
4 - Rear Port (Manifold; Radial) TK016001
Mounting Code
REAR HOUSING* FRONT HOUSING
Porting Code
OUPLING SHAFT GROUP
EXPLODED VIEW
ITEM # 1 8 11
DISPLACEMENT STATOR ROTOR DRIVE DRIVE LINK
(in3/rev) BOLT (7) THICKNESS SET LINK L DIM
0200- 12.2 021472 .6882 TK02007003 TK02003000 . 20
0250- 15.3 021378 .8601 TK02507003 TK02503000 .692
0315- 19.2 021366 1.0836 TK03157003 TK03153000 .916
0400- 24.4 021394 1.3761 TK04007003 TK04003000 6.209
0500- 30.5 021473 1.7199 TK05007003 TK05003000 6. 3
0630- 38.4 021474 2.1668 TK06307003 TK06303000 7.000
0800- 48.8 021388 2.7 22 TK08007003 TK08003000 7. 8
1000- 61.0 021475 3.4398 TK10007003 TK10003000 8.273
DISPLA EMENT GROUP
*TK Series Motors only available in rear ported option.
Shaft Code

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
12
Preparation Before Disassembly
•Before you disassemble the Torqmotor unit or any of its components read this entire manual. It provides important
information on parts and procedures you will need to know to service the Torqmotor.
•Refer to “Tools and Materials Required for Services”section for tools and other items required to service the
Torqmotorandhave themavailable.
•Thoroughly clean off all outside dirt, especially from around fittings and hose connections, before disconnecting
andremoving theTorqmotor. Remove rust orcorrosion fromcoupling shaft.
•Remove coupling shaft connections and hose fittings and immediately plug port holes and fluid lines.
•Remove the Torqmotor from system, drain it of fluid and take it to a clean work surface.
•Clean and dry the Torqmotor before you start to disassemble the unit.
•As you disassemble theTorqmotor clean all parts, except seals, in clean petroleum-based solvent, and blow them
dry.
WARNING:petroleum-base solvents are flammable. Beextremely careful whenusing any solvent. Even asmall
explosion or fire could cause injury or death.
WARNING:WEAR EYEPROTECTIONAND BE SURETOCOMPLYWITHOSHAOR OTHERMAXIMUMAIR
PRESSUREREQUIREMENTS.
CAUTION: Never steam or high pressure wash hydraulic components. Do not force or abuse closely fitted parts.
•Keep parts separate to avoid nicks and burrs.
•Discard all seals and seal rings as they are removed from the Torqmotor. Replace all seals, seal rings and any
damagedor worn partswith genuineParker or OEMapproved service parts.
CAUTION: Special lifting aids may be required to handle/service the TK motor due to it’s large size and weight.
Take steps necessary to ensure that handling/service can be done safely.
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
13
Disassembly and Inspection
Place
Torqmotor
in a vise
1. Place the Torqmotor in a soft jawed vice or
similar support, with coupling shaft (14)
pointed down and the vise jaws clamping
firmly on the sides of the housing (21)
mountingflange.
WARNING IF THE TORQMOTORISNOTFIRMLYHELD
IN THE VISE, IT COULD BE DISLODGED
DURINGTHESERVICEPROCEDURES,
CAUSINGINJURY.
Scribe alignment
mark 2. Scribeanalignment mark downand across theTorqmotorcomponents fromend cover(2)
to housing (21) to facilitate reassembly
orientationwhere required. SEEFIGURE 2.
Removespecial
bolts &
inspect bolts
3. Remove the nine special hex head bolts (1)
using a 9/16 inch size socket. SEE FIGURE
3.Inspect bolts for damaged threads.Re-
place damaged bolts. SEE FIGURE 4.
Reference Exploded Assembly View
Figure 4
Figure 3
Figure 2

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
14
Remove&
inspect
commutator
8. Removecommutator(4)andsealring(3)
Removesealring fromcommutator, usingan
air hose to blow air into ring groove until seal
ring is lifted out and discard seal ring. Inspect
commutatorfor cracks or burrs, wear, scoring,
spallingor brinelling. If anyof these conditions
exist, replace commutator. SEE FIGURE 7 &
8.
Figure 7
Figure 8
Removeend
cover&
inspect bolts
4. Removeendcover (2)and sealring (5).
Discard seal ring. SEE FIGURE 5.
Wash&inspect
end cover
NOTE
6. Thoroughlywashend cover(2) inproper
solvent and blow dry. Be sure the end cover
flow areas, are free of contamination. Inspect
end cover for cracks and the bolt head
recessesfor damage. Replaceend coveras
necessary. SEE FIGURE 6.
A polished pattern (not scratches) on the
cover from rotation of the commutator (4)
is normal. Discoloration would indicate
excessfluid temperature, thermalshock,
or excess speed and require system
investigation for cause and close inspec-
tion of end cover, commutator, manifold,
and rotor set.
Figure 6
Figure 5
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
15
Remove
manifold 9. Remove manifold (6) and inspect for cracks surfacescoring,brinellingorspalling.Replace
manifold if any of these conditions exist. SEE
FIGURE9.Apolishedpatternontheground
surfacefrom commutator or rotor rotation is
normal.Removeanddiscardthesealring(5).
NOTE Themanifoldisconstructedofplatesbonded
togethertoformanintegralcomponentnot
subjecttofurtherdisassemblyforservice.
Compareconfigurationofbothsidesofthe
manifoldtoensurethatsamesurfaceis
reassembledagainsttherotorset.
Remove&
inspect
rotor set &
wearplate
10. Removerotorset(9)andwearplate(10),
together to retain the rotor set in its assembled
form,maintaining thesame rotorvane (9c)to
stator (9b) contact surfaces. SEE FIGURE 10.
The drive link (11) may come away from the
coupling shaft (14) with the rotor set, and
wearplate.You may haveto shiftthe rotor set
on the wearplate to work the drive link out of
therotor(9a)andwearplate.Inspecttherotor
set in its assembled form for nicks, scoring, or
spallingonanysurface and forbrokenorworn
splines.If the rotor set component requires
replacement, the complete rotor set must be
replaced as it is a matched set. Inspect the
wearplateforcracks,brinelling,orscoring.
Discardsealrings (5)betweenthe rotorset,
andthewearplate.
NOTE Therotorset(9)components may become
disassembledduringserviceprocedures.
Markingthesurfaceofthe rotor and stator
thatis facing UP,withetching ink or grease
pencilbeforeremoval from Torqmotor will
ensurecorrectreassemblyofrotorinto
statorandrotorsetintoTorqmotor. Marking
all rotor components and mating spline
componentsforexactrepositioningat
assembly will ensure maximum wear life
andperformanceofrotorsetand
Torqmotor.
Figure 9
Figure 10
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
16
NOTE SeriesTKTorqmotormayhavearotorset
with two stator halves (9B) with a seal ring
(5)betweenthem. Discard seal ring only if
statorhalvesbecomedisassembledduring
theserviceprocedures.
NOTE A polished pattern on the wear plate from
rotor rotation is normal.
Checkrotor,
vaneclearance 11. Place rotor set (9) and wear plate (10) on a flat surface and center rotor (9a) in stator (9b)
suchthat two rotor lobes (180 degrees apart)
anda roller vane (9c) centerline are on the
samestator centerline. Checkthe rotor lobe
to roller vane clearance with a feeler gage at
this common centerline. If there is more than
.005 inches (0.13 mm) of clearance, replace
rotor set. SEE FIGURE 11.
NOTE If rotor set (9) has two stator halves (9b),
check the rotor lobe to roller vane clear-
ance at both ends of rotor.
Remove&
inspect
drive link
12. Remove drive link (11) from coupling shaft
(14) if it was not removed with rotor set and
wear plate. Inspect drive link for cracks and
wornor damagedsplines. Noperceptible lash
(play)should benoted betweenmating spline
parts. SEE FIGURE 12. Remove and discard
sealring (5)from housing (21).
Removethrust
bearing 13. Removerear thrust bearing(13) andretaining washer(12) from top of couplingshaft (14).
Inspectfor wear,brinelling, corrosionand a
full complement of retained rollers. SEE
FIGURE13.
Figure 13
Figure 12
Figure 11
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
17
Check coupling
shaft for rust
or corrosion
14. Check exposed portion of coupling shaft (14)
to be sure you have removed all signs of rust
and corrosion which might prevent its
withdrawalthroughthe sealandbearing.
Crocus cloth or fine emery paper may be
used. Remove any key (14A), nut (14B),
washer, bolt, or lock washer still attached to
the shaft.
Remove&
inspect
coupling shaft
15. Removecoupling shaft(14), by pushing on
the output end of shaft. SEE FIGURE 14.
Inspect coupling shaft bearing and seal
surfaces for spalling, nicks, grooves, severe
wearor corrosionand discoloration.Inspect
fordamaged orworn internal andexternal
splines or keyway. SEE FIGURE 15. Replace
coupling shaft if any of these conditions
exist.
NOTE
NOTE
Minor shaft wear in seal area is
permissible. If wear exceeds .020 inches
(0.51 mm) diametrically, replace coupling
shaft.
A slight “polish”is permissible in the
shaft bearing areas. Anything more would
require coupling shaft replacement.
Figure 15
Figure 14
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
18
18. Removeseal(18),backupwasher(19),and
backupring(20)fromTKSeriesTorqmotor
housingbyworkingthemaroundunseated
thrustwashers(16)andthrustbearing(17)and
outofthehousing.Discardsealandwashers.
SEEFIGURE 16.
Remove dirt
& water seal 19. Remove housing (21) from vise, invert it and removeand discard seal (23). Ablind hole
bearingor sealpulleris required.
SEE FIGURE 17.
Inspect
housing
assembly
20. Inspect housing (21) assembly for cracks,
the machined surfaces for nicks, burrs,
brinellingor corrosion.Remove burrsthat can
beremoved without changingdimensional
characteristics. Inspect tapped holes for
threaddamage. SEE FIGURE18. If the
housing is defective in these areas, discard
the housing assembly.
Figure 16
Figure 17
Figure 18
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
19
Inspect housing
bearings 21. If the housing (21) assembly has passed inspection to this point, inspect the housing
bearings(22) and(15) and sincethey are
captured in the housing cavity, the two thrust
washers(16)and thrustbearing (17). The
bearing rollers must be firmly retained in the
bearing cages, but must rotate and orbit
freely.All rollers and thrust washers must be
freeof brinellingand corrosion.
NOTE The depth or location of bearing (15) in
relation to the housing wear plate surface
should be measured and noted before
removing the bearings. This will facilitate
the correct reassembly of new bearings.
SEE FIGURE 19.
Remove
bearings
&thrust
washers
22. If the bearings, or thrust washers must be
replaced use a suitable size bearing puller to
removebearing(15) fromhousing (21)
withoutdamaging thehousing. Removethrust
washers(16) andthrustbearing (17)and
replace. SEE FIGURES 20 & 21.
THEDISASSEMBLYOFTORQMOTORISNOW COMPLETE.
Figure 19
Figure 20
Figure 21
Disassembly and Inspection

HY13-1518-M1/USA Low Speed High Torque, Hydraulic Motors
TK Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 USA
Hydraulics
20
5
23
18
3
20
19
•Replace all seals and seal rings with new ones each time you reassemble the Torqmotor unit. Lubricate all seals
and seal rings with SAE 10W40 oil or clean grease before assembly.
•NOTE: Complete seal kits are available. SEE FIGURE 22. The parts should be available through most
OEM parts distributors or Parker approved Torqmotor distributors. (Contact your local dealer for avail-
ability).
•NOTE: Unless otherwise indicated, do not oil or grease parts before assembly.
•Wash all parts in clean petroleum-based solvents before assembly. Blow them dry with compressed air. Remove
any paint chips from mating surfaces of the end cover, commutator set, manifold rotor set, wear plate and
housingand from port and sealing areas.
WARNING
WARNING
SINCE THEYARE FLAMMABLE, BE
EXTREMELY CAREFULWHEN USING ANY
SOLVENT. EVEN A SMALL EXPLOSION
OR FIRE COULD CAUSE INJURYOR
DEATH.
WEAR EYE PROTECTIONAND BE SURE
TOCOMPLY WITH OSHAOROTHER
MAXIMUM AIR PRESSURE REQUIRE-
MENTS.
Press in outer
bearing 1. Ifthehousing(21)bearingcomponentswere removedforreplacement,thoroughlycoatand
packanew outer bearing(22) with clean
corrosionresistantgreaserecommendedinthe
materialsection.Press thenew bearinginto
thecounterboreatthemountingflangeendof
thehousing,usingtheappropriatesized
bearingmandrelsuchasdescribedinfigure1
whichwillcontrol thebearing depthto.410/
.420”fromthe outside faceof the counterbore.
Figure 22 Seal Kit
Torqmotor Assembly
Figure 23