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HY13-1527-M1/US

Torqmotor™ Service Procedure

TF, TG, TH and TL Series

Parker Hannifin Corporation

Hydraulic Pump/Motor Division

Greeneville, TN 37745 US

5

Introduction

This service manual has one purpose: to guide you
in maintaining, troubleshooting, and servicing the TF,
TG, TH and TL Torqmotor™ (low-speed, high-torque
hydraulic motor).
Material in this manual is organized so you can work
on the Torqmotor™ and get results without wast-
ing time or being confused. To 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. Col-
umn 2 explains in detail the procedure you should
follow. Column 3 illustrates this procedure with pho-
tographs. Read all material carefully and pay special
attention to the notes, cautions, and warnings.

A page with the Torqmotor™ exploded assembly view
is provided several places in this manual. The compo-
nent part names and item numbers assigned on this
exploded assembly view correspond with names and
item numbers (in parentheses) used in the disassem-
bly 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 Equip-
ment Manufacturer or Parker approved TF, TG, TH
and TL Torqmotor™ Distributors.
As you gain experience in servicing the Torqmotor™,
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 Torqmotor™
should be a safe and productive procedure, in order
for the unit to deliver the reliable, long-life operation
engineered into it.

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Summary of Contents for Torqmotor TF Series

Page 1: ...HY13 1527 M1 US Torqmotor Service Procedure Effective April 2015 TF TG TH and TL Series Low Speed High Torque Hydraulic Torqmotors ...

Page 2: ... 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 featur...

Page 3: ... and complete information and instructions regard ing the techniques and tools required for maintaining repairing and servicing the complete line of Parker TF TG TH and TL TorqmotorTM 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 describe...

Page 4: ...ty because of superior lubrication and minimum drive spline wear Zero leak commutation valve provides greater more consistent volumetric ef ficiency Torqmotor TF Series features include Heavy duty thrust and roller bearings for up to twice side load capacity to the previ ous motor Roller vanes to reduce friction and inter nal leakage and to maintain efficiency A patented orbiting commutation syste...

Page 5: ...the procedure you should follow Column 3 illustrates this procedure with pho tographs Read all material carefully and pay special attention to the notes cautions and warnings A page with the Torqmotor exploded assembly view is provided several places in this manual The compo nent part names and item numbers assigned on this exploded assembly view correspond with names and item numbers in parenthes...

Page 6: ...ts or slipping belts Hydraulic Components If you think the problem is caused by a hydraulic com ponent 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 me...

Page 7: ...eakage 3 Severely worn or damaged internal splines 4 Excessive heat 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 Replace worn rotor set by disassembling Torqmotor unit Replace rotor set drive link and coupling shaft by disassembling Torqmotor unit Locate excessive heat source usually ...

Page 8: ...sult factory Special bearing mandrel for TF TG TJ Torqmotors SEE FIGURE 1 Feeler gage 005 inch 13 mm TH Torqmotors require blind hole bearing puller for a 1 575 inch dia 40 0 mm and 2 130 inch dia 54 1 mm bearings TF TG TL Torqmotors require blind hole bearing puller for 1 400 inch dia 35 6 mm and 2 130 inch dia 54 1 mm bearings Clean corrosion resistant grease Part 406018 is included in each seal...

Page 9: ...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 1A 1B or 1C 45 55 ft lbs 60 76 N m bolt 5 8 18 UNF 2A 12D 140 180 ft lbs 190 244 N m nut 1 20 UNEF 2B 12B TF TG TL 300 400 ft lbs 407 542 N m nut 1 1 8 18 UNEF 2B 12B TG TH 3...

Page 10: ...4 Seal Ring 5 5 Commutator 6 Commutator Ring 7 Manifold 8 Rotor Set 8a Rotor 8b Stator or Stator Half 8c Vane 7 8d Stator Half 8e Vane 7 9 Wear Plate 10 Drive Link 11 Thrust Bearing 12 Coupling Shaft 12a Key 12b Nut 12c Washer 12d Bolt 12e Lockwasher 12f Retaining Ring 13 Bearing Inner 14 Thrust Washer 15 Thrust Bearing 16 Seal 17 Backup Ring Items not sold separately Sold as matched sets only 18 ...

Page 11: ... 028511 47 Seal Dirt and Water 478030 48 Snap Ring 401623 49 Drive Shaft 14 Tooth Spline 093043 49 Straight Key Shaft 1 1 4 093044 50 Thrust Washer 400141 Yellow 028027 132 134 White 028028 138 140 Green 028029 144 146 Blue 028030 150 152 Red 028031 156 158 Black 028032 162 164 51 Bearing and Cone Assembly 2 067033 52 Bearing Cup 2 400140 53 Retaining Ring 401623 55 Plug 036024 56 Housing ME012013...

Page 12: ...477342 068024 071019 400136 069017 028515 068027 478035 029118 SERIES EXPLODED VIEW SPEED SENSOR ITEM 2 1 18 18 18 DESCRIPTION END SERVICE SERVICE MOUNTING 8 PORTING COVER HOUSING ASS Y HOUSING ASS Y SENSOR MS Standard 4 Bolt 7 8 O Ring ME016000 ME012001A1 ME012301A1 455063 US Wheel Mt 4 Bolt 7 8 O Ring ME016000 ME012002A1 ME012302A1 455063 AS SAE A 2 Bolt 7 8 O Ring ME016000 ME012006A1 ME012306A1...

Page 13: ...n Item 1 ME016000 032435 032819 032817 455063 OPTION GROUP For reverse timed manifold use ME015001 1 Service housing ass y ITEM 18 with part number suffix A1 includes ITEM 13 14 two req d 15 and 19 2 Select the required bolt number in designated DISPLACEMENT GROUP under bolt ITEM 1 1A 1B or 1C shown in designated OPTION GROUP 3 1 20 UNEF slotted nut 025113 is required on 1 1 4 tapered shaft if the...

Page 14: ...1395 021388 021388 021416 3 5036 ME487003 N A ME483000 7 3285 0960 58 5 021396 021389 021389 021399 4 2536 ME587003 N A ME583000 8 0815 DISPLACEMENT GROUP EXPLODED VIEW SPEED SENSOR ITEM 1 18 1 18A 18 18 DESCRIPTION SERVICE SERVICE MOUNTING 8 PORTING HOUSING ASS Y O RING 2 HOUSING ASS Y SENSOR MS Standard 4 Bolt 7 8 O Ring ME012001A3 ME012301A3 455063 US Wheel Mt 4 Bolt 7 8 O Ring ME012002A3 ME012...

Page 15: ...al 032817 inner seal 028515 and 029118 back washers 478035 dirt water seal 406018 grease pack bulletin 050016 Special seal kit SK000093 for units that use fire retardant fluids includes six 032820 seal rings 032435 commutator seal 032818 inner seal 028515 and 029118 back up washers 478035 dirt water seal 406018 grease pack bulletin 050016 High Temp commutator seal AAAJ 032861 High temp seal black ...

Page 16: ...21379 021366 021415 021374 1 7923 ME247003 ME247007 ME243000 5 6045 0475 29 1 021392 021394 021394 021393 2 1268 ME297003 ME297007 ME293000 5 9475 0530 32 3 021385 021393 021393 021395 2 3768 ME337003 ME337007 ME333000 6 1985 0625 38 0 021366 021329 021329 021458 2 7536 ME377003 N A ME373000 6 5745 0785 48 0 021395 021388 021388 021416 3 5036 ME487003 N A ME483000 7 3285 0960 58 5 021396 021389 02...

Page 17: ... 401642 415563 AAAU Hot Oil Shuttle Endcover 11 00 Item 1A 6 ME016003A1032435 032819 032836 036297 032790 401642 415563 Castle Nut BBBA 1000 PSI Cross Port Relief Endcover Item 1C 6 ME016004A1032435 032819 032836 411063A1 032424 410009 40 1000PSI BBBB 2000 PSI Cross Port Relief Endcover Item 1C 6 ME016004A2032435 032819 032836 411063A1 032424 410009 09 2000PSI BBBC 3000 PSI Cross Port Relief Endco...

Page 18: ...ing TL012000A1 ME016000 LS Wheel Mt Front Brake Nose 7 8 O Ring TL012001A1 ME016000 UB Wheel Mt 4 Bolt 7 8 Rear Radial TL012002A1 ME016002 Mounting Code Porting Code EXPLODED VIEW ITEM 12 12A 12B 12C 12D 12E 12F COUPLING 5 8 18 LOCK RETAINING DESCRIPTION SHAFT KEY NUT WASHER BOLT WASHER RING 08 1 25 Tapered Shaft TL019000 038016 5 16 x 1 00 3 025126 028413 021482 028992 401333 03 1 25 Str Keyed 5 ...

Page 19: ... and removing the Torqmotor Remove rust or corrosion from coupling 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 the Torqmotor clean all parts except seals in clean ...

Page 20: ...G THE SERVICE PROCEDURES CAUSING INJURY Scribe alignment mark loose valve plugs 2 Scribe an alignment mark down and across the Torqmotor components from end cover 2 to housing 18 to facilitate reassembly orientation where required Loosen two shuttle or relief valve plugs 21 for disassembly later if included in end cover 3 16 or 3 8 inch Allen wrench or 1 inch hex socket required SEE FIGURES 2 3 Re...

Page 21: ...l kits but serviced separately if required NOTE The insert and if included the orifice plug in the end cover 2 must not be removed as they are serviced as an integral part of the end cover Wash inspect end cover NOTE 6 Thoroughly wash end cover 2 in proper solvent and blow dry Be sure the end cover valve apertures including the internal orifice plug are free of contamination Inspect end cover for ...

Page 22: ... set Remove inspect rotor set wearplate 10 Remove rotor set 8 and wearplate 9 together to retain the rotor set in its assembled form maintaining the same rotor vane 8C to stator 8B contact surfaces SEE FIGURE 13 The drive link 10 may come away from the coupling shaft 12 with the rotor set and wearplate You may have to shift the rotor set on the wearplate to work the drive link out of the rotor 8A ...

Page 23: ... 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 15 NOTE NOTE If rotor set 8 has two stator halves 8B 8D and two sets of seven vanes 8C 8E as shown in the alternate construction TG rotor set assembly view check the rotor lobe to roller vane clearance at both ends of rotor Remove inspect drive link 12 Rem...

Page 24: ...15 Remove coupling shaft 12 by pushing on the output end of shaft SEE FIGURE 19 Inspect coupling shaft bearing and seal surfaces for spalling nicks grooves severe wear or corrosion and discoloration Inspect for damaged or worn internal and external splines or keyway SEE FIGURE 20 Replace coupling shaft if any of these conditions exist NOTE NOTE NOTE Minor shaft wear in seal area is permissible If ...

Page 25: ... did not include backup washer 25 but must include backup washer 25 when reassembled for service Remove dirt water seal 18 Remove housing 18 from vise invert it and remove and discard dirt water seal 20 A blind hole bearing or seal puller is required SEE FIGURE 22 Inspect housing assembly 19 Inspect housing 18 assembly for cracks the machined surfaces for nicks burrs brinelling or corrosion Remove...

Page 26: ...ection must be replaced If the housing has passed this inspection the disassembly of the Torqmotor is completed NOTE NOTE The depth or location of bearing 13 in relation to the housing wear plate surface and the depth or location of bearing 19 in relation to the beginning of bearing counter bore should be measured and noted before removing the bearings This will facilitate the correct reassembly o...

Page 27: ...CAREFUL WHEN USING ANY SOLVENT EVEN A SMALL EXPLOSION OR FIRE COULD CAUSE INJURY OR DEATH WARNING WEAR EYE PROTECTION AND BE SURE TO COMPLY WITH OSHA OR OTHER MAXIMUM AIR PRESSURE REQUIREMENTS Press in outer bearing Place housing into soft jawed vise 2 If the housing 18 bearing components were removed for replacement thoroughly coat and pack a new outer bearing 19 with clean corrosion resistant gr...

Page 28: ...ng section is not available and alternate methods are used to press in bearing 13 and 19 the bearing depths specified must be achieved to insure adequate bearing support and correct relationship to adjacent components when assembled CAUTION CAUTION Because the bearing 13 and 19 have a press fit into the housing they must be discarded when removed They must not be reused Torqmotor Assembly Press in...

Page 29: ... order before pressing in the inner housing bearing 13 SEE FIGURE 32 33 When these components are in place press new bearing 13 into the housing 18 to a depth of 105 125 inches 2 67 3 18 below the housing wear plate contact face Use the opposite end of the bearing mandrel used to press in outer bearing 19 Reference figure 2 in the Tools and Materials Required for Servicing section SEE FIGURE 34 Fi...

Page 30: ...d the thrust bearing package and placed into their respective counterbores The seal lip must face out of the seal counterbore and toward the inside of Torqmotor see figure 60 Be sure the thrust bearing package is reseated correctly after assembly of the seal and backup washer SEE FIGURES 35 36 CAUTION CAUTION Original design TF TG Torqmotors that do not have backup washer 25 when disassembled must...

Page 31: ...with the recommended grease Parker Gear grease specification 045236 E M Lubricant K 70M NOTE Mobil Mobilith SHC 460 NOTE A 102 Tube P N 406010 is included in each seal kit NOTE NOTE The coupling shaft 12 will be approximately 10 inch 2 54 mm below the housing wear plate surface to allow the assembly of thrust bearing 11 The coupling shaft must rotate smoothly on the thrust bearing package SEE FIGU...

Page 32: ...a new seal ring 4 and assemble it into the seal ring groove on the wear plate side of the rotor set stator 8B SEE FIGURE 44 Install the assembled rotor set and seal ring 13 Install the assembled rotor set 8 onto wear plate 9 with rotor 8A counterbore and seal ring side down and the splines into mesh with the drive link splines SEE FIGURE 45 NOTE NOTE If necessary go to the appropriate Rotor Set Co...

Page 33: ...eries of irregular shaped cavities on the largest circumference or circle around the inside diameter The polished impression left on the manifold by the rotor set is another indication of which surface must contact the rotor set Install manifold and seal ring 14 Assemble the manifold 7 over the drive link 10 and onto the rotor set Be sure the correct manifold surface is against the rotor set SEE F...

Page 34: ...23 the valve 24 and the second spring 23 into the other end of the valve cavity Turn the second plug 21 with a new o ring 22 loosely into the end cover valve cavity 3 16 inch Allen wrench required SEE FIGURE 52 Assemble relief valve parts in end cover 18 If relief valve components items 21 22 24 were removed from the end cover 2 assemble a new o ring 22 on the two plugs 21 Assemble a two piece rel...

Page 35: ...OTE NOTE If the end cover has a valve 24 use the line you previously scribed on the cover to radially align the end cover into its original position Assemble cover bolts 20 Assemble the 7 special bolts 1 1A 1B or 1C and screw in finger tight Alternately and progressively tighten the bolts to pull the end cover and other components into place with a final torque of 50 55 ft lbs 68 75 N m for the se...

Page 36: ...ed Torque the valve plugs 21 Torque the two shuttle valve plug assemblies 21 in end cover assembly to 9 12 ft lbs 12 16 N m if cover is so equipped SEE FIGURE 59 Torque the two relief valve plug assemblies 21 in end cover assembly to 45 55 ft lbs 61 75 N m if cover is so equipped THE ASSEMBLY OF THE TORQMOTOR IS NOW COMPLETE EXCEPT FOR WOODRUFF KEY 12A NUT 12B WASHER 12C BOLT 12D LOCKWASHER 12E RE...

Page 37: ...ide of the rotor was etched during Torqmotor disassembly this side should be up If the rotor is not etched and does not have a counterbore use the drive link spline contact pattern apparent on the rotor splines to determine the rotor side that must be against the wear plate Assemble vanes CAUTION Assemble full complement of vanes Remove two assembled bolts 4 Assemble six vanes 8C or as many vanes ...

Page 38: ...s into mesh with drive link 10 splines NOTE Use any marking you applied to rotor set components to reassemble the components in their original relationship to ensure ultimate wear life and performance Assemble vanes CAUTION 4 Assemble six vanes 8C or as many vanes that will readily assemble into the stator vane pockets CAUTION Excessive force used to push the rotor vanes into place could shear off...

Page 39: ...eight as the stator half must be reassembled in their respective stator half for the rotor set to function properly Assemble vanes 8 Assemble six vanes 8E or as many vanes that will readily assemble into the stator vane pockets Assemble full complement of vanes 9 Grasp the output end of coupling shaft 12 with locking pliers or other appropriate turning device and rotate coupling shaft drive link a...

Page 40: ...s for counter clockwise coupling shaft rotation Use test stand if available to check operation of the Torqmotor Hydraulic Fluid Keep the hydraulic system filled with one of the following 10W40 SE or SF manufacturers suggested oil Hydraulic fluid as recommended by equipment manufacturer but the viscosity should not drop below 50 SSU or contain less than 125 zinc anti wear additives CAUTION Do not m...

Page 41: ...and correct any external leak in the hydraulic system no matter how minor the leak Comply with manufacturer s specifications for cleaning or replacing the filter CAUTION Do not weld braze solder or any way alter any Torqmotor component CAUTION Maximum operating pressure must not exceed recommended Torqmotor pressure capacity CAUTION Always carefully inspect any system component that may have been ...

Page 42: ...HY13 1527 M1 US Torqmotor Service Procedure TF TG TH and TL Series Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville TN 37745 US 42 Notes ...

Page 43: ...alf all documents Seller deems necessary to perfect its security interest 11 Improper use and Indemnity Buyer shall indemnify defend and hold Seller harm less from any claim liability damages lawsuits and costs including attorney fees whether for personal injury property damage patent trademark or copyright infringe ment or any other claim brought by or incurred by Buyer Buyer s employees or any o...

Page 44: ...Parker Hannifin Corporation 2745 Snapps Ferry Road Greeneville TN 37745 USA Tel 423 639 8151 FAX 423 787 2418 www parker com pumpmotor ...

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