HTG Service Manual - Parker HT Series Integrated Hydrostatic
Contents
1. Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Charge pump cover Align bolt holes to end block Start two bolts Torque bolts Bypass relief valve Darker Place the charge pump cover over the charge pump rotor and stator Align the charge pump cover holes to the end block Hand start the two bolts of the charge pump cover to end block Torque both bolts by going diagonal to 90 110 in Ibs Place bypass relief valve into end block Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Bypass stem Place the bypass stem into top housing hole and align with bypass valve Bypass valve clip Push the retaining clip on assembly stem of bypass valve groove Bypass lever Place the bypass lever into slot of the valve push until lever arm snaps into place Position lever arm to closed bypass valve Charge pump pick up tube Place O ring onto the end of charge pump pick up tube Lightly oil the O ring with synthetic oil Install tube into charge Push the charge pump tube pump cover inside of charge pump cover 39 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Be sure the O ring does not g2. HY13 1524 001 US Parker Product Effective June 2012 HIG Transmission Product Series Service Procedure HY13 1524 001 US Service Manual General Information Series Product Name 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 Copyright 2012 Parker Hannifin Corporation All Rights Reserved 2 n k Parker Hannifin Corporation af er Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 U
3. nut if to be reused Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name p Remove four tab washer a Remove the fan Check for any damage due to normal wear If none exist fan can be reused Remove pulley May require using Posi Lock Model 204 puller or a bearing puller to take off pulley CAUTION Use caution not to bend or damage pulley Remove RTN assembly if Use a 1 allen wrench to equipped remove both allen head screws gt e y RN fy LA Ld SS ETT LE onm LI a CZ Remove side cover Remove the five screws from the side plate and remove plate 21 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Remove gasket Hemove gasket inspect for any damage replace if needed Loosen and remove four bolts Remove the entire motor Hemove the entire motor out assembly from the top housing Remove bottom cover Remove the ten 1 4 20 screws from bottom cover Plug and washer If plug was removed to drain the oil inspect the washer between pan and plug Replace washer if necessary Torque plug to 50 75 in Ibs 22 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Pr
4. wear plate holes to the housing bolt holes housing bolt holes 43 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Assemble seal ring Apply small amount of clean grease to new seal ring and assemble it into the seal ring groove of the rotor set Install the assembled rotor set Install the assembled rotor Note Rotor counterbore set with rotor counterbore side must be down against and seal ring side facing wear plate for drive link down onto wear plate clearance and to maintain the rotor drive link spline contact Alignment of rotor set to Turn the assembly so that housing bolt holes the holes match up with the bolt holes of housing Install rotor thrust washer Place thrust washer on the tip of drive link and into groove of rotor Washer installed Washer will fit flush to top of rotor 44 D k Parker Hannifin Corporation af er Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Series Product Name Assemble square cut seal ring in manifold The manifold is made up of several plates bonded together permanently to form an integral component The manifold surface that must contact the rotor set has a series of irregular shaped cavities on the largest circumference and circle around the inside diameter Assemble manifold Assemble O ring seal Ass
5. 001 US Service Manual Series Product Name Torque bolts to specifications Install both end cover O rings End cover O ring Install top housing onto motor end cover Align the top housing to the two O rings in the end cover Apply clean grease onto each O ring and place in the groove area of the end cover Place O ring over the end cover and into groove With the motor still in the vise place the top housing assembly onto the end cover of the motor Align these two components together pressing down on the top housing to secure the end cover O ring fits inside of top housing cavity Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Place flat washer under head of each bolt Refer to picture for bolt location Refer to picture for bolt location Darker j Starting with two bolts measuring 6 125 place washer under head of each bolt Hand start each bolt to ensure you do not cross thread Refer to picture for location of bolt Repeat step for the second bolt that measures 6 125 long Place washer on the two remaining bolts that measure 6 625 long Hand start each bolt to ensure you do not cross thread Refer to picture for location of bolt Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series P
6. 4 001 US Service Manual Assembly Series Product Name Install shaft seal Lay the washer bearing package flat Apply oil on the shaft Insert shaft into housing Top of output shaft Parker Place the flat side of shaft seal towards the flat washer and the lip of seal towards end cover Use your fingers press shaft seal firmly into housing seal groove until it makes contact to flat washer Make sure the thrust bearing stays in the middle of the two washers Lay the washer bearing package flat to housing face Apply synthetic oil to help shaft passing through lip of shaft seal package olightly rotate shaft while pushing down so that it passes through seal package and bottoms out to the top thrust washer Top of the shaft should be even with the radial bearing face Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Install thrust bearing Install thrust bearing onto the end of coupling shaft Install drive link Install drive link long splined end down into the coupling shaft Engage drive link splines until they mesh with the internal coupling shaft splines Install housing face o ring Apply small amount of clean grease to a new section seal ring and assemble it into the seal ring groove of the housing face Assemble wear plate Place wear plate over drive link Alignment of wear plate to Align
7. Left Hand Slde DESCRIPTION O RING __ So sHeeTs SERVICE BULLETIN NEN NENNEN RENE SK000282 PARTS LIST MOTOR KIT Brake Kit 5 Bolt 2 Hole Lever BRAKE SHOE ASSEMBLY WITH TWO HOLE LEVER ARM 5 16 18 FLANGE HEAD CAP SCREWS NEN NENNEN NENNEN SK000283 PARTS LIST MOTOR KIT Brake Kit 4 Bolt 2 Hole Lever BRAKE SHOE ASSEMBLY WITH TWO HOLE LEVER ARM 316 18 FLANGE HEAD CAP SCREWS a ee ee 13 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Seal Kit Data Series Product Name SK000284 PARTS LIST MOTOR KIT Break Kit 5 Bolt 1 Hole Lever DESCRIPTION COTTER PIN BRAKE SHOE ASSEMBLY WITH ONE HOLE LEVER ARM 5 BOLT BRAKE DRUM 5 16 18 FLANGE HEAD CAP SCREWS 1 20 SLOTTED NUT __ skoonzes see Ts SERVICE BULLETIN i NL i SK000285 PARTS LIST MOTOR KIT Brake Kit 4 Bolt 1 Hole Lever BRAKE SHOE ASSEMBLY WITH ONE HOLE LEVER ARM 316 18 FLANGE HEAD GAP SCREWS il d SK000287 PARTS LIST SECTION SEAL KIT 1 5K000287 SHEET 3 SERVICE BULLETIN 14 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Seal Kit Data Series Product Name SK000288 PART LIST MOTOR SEAL KIT s TE eis MOTOR TO ENDBLOGK O RING SEALS 15 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Warning Data Series Produ
8. S General Information Section 1 General Information Definitions Disclaimer Introduction Design Features Troubleshooting Guide Troubleshooting Checklist Tools amp Materials Required for Servicing General Information Exploded Views Seal Kit Information Section 2 Reseal amp Repair Disassembly amp Assembly Motor Only Disassembly Assembly Section 3 Maintenance System Maintenance Tips Service Manual Series Product Name c co Jo O1 A 10 11 12 13 14 15 17 20 Fig Il 53 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual General Information Series Product Name WARNING Warning describes hazards or unsafe practices which could result in severe personal injury or death CAUTION A caution describes hazards or unsafe practices which could result in personal injury or product or property damage NOTE A note gives key information to make following a procedure easier or quicker Disclaimer This Service Manual has been prepared by Parker Hannifin Corporation for reference and use by mechanics who have been trained to repair and service hydraulic transmission on commercial and non commercial equipment applications Parker Hannifin Corporation 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 Parker HTG T
9. Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Install bottom cover Place the bottom cover over gasket Use alignment pins to keep cover from shifting Start self tapping screws Start one of the self tapping screws half way down Start each one of the self Repeat process until each tapping screws screw has been started half way down Take out the alignment pins and replace with screw Torque bottom screws Starting at the number one screw torque to 100 120 Bottom cover is marked in in lbs repeat by following order how each screw is the marked number on the torque bottom cover until all screws have been properly torque Plug and washer If plug and washer was removed during disassembly inspect washer Hand start threads and torque plug 50 75 in Ibs 91 _ Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly Install RTN if equipped E l ME f 5 E a WD a Install pulley fan lock washer and nut Install four tab washer Darker Service Manual Series Product Name If the original unit had a RTN and was removed reinstall RTN onto trunnion arm shaft Hand start the two socket head cap screws and torque to 90 110 in lbs Place the pulley onto pump shaft Place the fan with the tabs pointing up onto the pump shaft Place the four tab washer onto fan with the tabs in between the fan t
10. abs Apply Loctite M 242 to threads of nut Torque nut to 86 70 ft Ibs Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly Ir uae ond Service Manual Series Product Name Install expansion tank barb fitting To insure maximum transmission performance use Parker recommended fluid listed on page 8 Replace plug Torque hollow hex plug Finished Assembly 93 Hand start the expansion tank barb fitting and torque to 200 240 in lbs Remove tape and fill with synthetic oil 140 cc to completely fill each unit Fill transmission to the expansion tank fitting with 96 oz of oil Hand start hollow hex plug Torque hollow hex plug to 100 120 in Ibs Brake pads hub and nut will have to be assembled after HTG has been installed on vehicle frame Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Maintenance Series Product Name System Maintenance Tips e Adjust fluid level in reservoir as necessary e Encourage all operators to report any malfunction or accident that may have damaged the hydraulic system or component Do not attempt to weld any broken HTG Transmission component Replace any component with original Parker parts e Do not cold straighten hot straighten or bend any Torpact Transmission part e Prevent dirt or other foreign matter from enteri
11. alve Capture the spring into the valve cap hand start threads into end block assembly Torque both caps to 40 45 ft lbs Apply synthetic oil on the face of end block Oil will allow the port plate to stick to the end block Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Port plate Place the port plate onto the end block assemble bronze side facing up Align port plate to both dowel pins Apply Oil onto port plate Apply synthetic oil on face of port plate spread over the entire plate Placing end block into top While holding the port plate housing in place turn the end block over and place into proper area in the top housing Align end block to bolt Handle careful not to holes damage splines of charge pump shaft and port plate stays in position End block aligned to top housing 36 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Insert and hand start four Insert four bolts 3 8 16 X 2 bolts Torque each bolt Torque each 3 8 16 bolt by going diagonal to 550 660 in lbs Apply oil to face of Apply a small amount of endblock synthetic oil to the face of the end block Place the rotor onto pump shaft splines Install stator Place the outside stator onto face of end block
12. bs Install side cover gasket Place the side cover gasket on top of housing align to screw holes Place side cover on top of Install side cover screws gasket Start each five self torque to specifications tapping screws half way down Starting at one of the Y4 20 screws torque to 100 200 in lbs repeat process by going diagonal to the next screw Hand start the filter into Install new filter threads of top housing Using a socket and torque wrench torque the filter to 115 135 in lbs Fill transmission with Parker recommended oil 96 oz Fill transmission with To insure maximum Parker recommended oil performance and life use a Parker recommended fluid listed on page 8 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Disassembly Replace plug Torque Hollow Hex Plug FIG Il Remove the fluid filter to completely drain unit Drain oil out of unit Remove fan nut Darker i Service Manual Series Product Name Hand start hollow hex plug Torque to 100 120 in lbs Place a pan for fluid collection under the unit Remove the filter from the unit allowing the fluid to drain into the pan To help drain fluid either remove tape or fitting to act as a vent With a 15 16 socket remove the fan pulley nut Inspect nut for any thread or other damage If none exits nut can be reused Apply Loctite 242 to threads of
13. ct Name Before you disassemble the HTG Transmission 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 HTG Transmission unit Be sure that you know and understand the equipment and any hazards associated with performing these procedures Thoroughly clean off all outside dirt and grass especially from around fittings and hose connections before disconnecting and removing the HTG Transmission Remove rust or corrosion from the coupling shaft Remove belt connections immediately plug port holes and any fluid lines Depends on how the HTG is mounted to vehicle if the nut brake hub and brake back plate needs to be removed prior to the HTG removal for inspection and or repair It is recommended by the factory to remove these items prior to HTG as a safer practice Refer to page 10 and 11 illustrations for removal and replace of the brake assembly and torque specifications Remove the HTG Transmission from the system drain it of fluid and take it to a clean work surface Remove fan from shaft prior to servicing any portion of transmission to prevent from breaking Clean and dry the HTG Transmission before you start to disassemble it As you disassemble the HTG Transmission clean all parts except seals in clean OSHA approved solvent and use low pressure air to blow them dry WARNING Since they are oil and grease that can be flammable be extremely care
14. ct Name Introduction The three column format used in this Service Manual will help make it easy for you to service a HTG transmission Column 1 illustrates the procedure with photographs Column 2 gives a brief key for each step and Column 3 explains in detail the procedure you should follow Pay special attention to the notes cautions and warnings This manual contains troubleshooting information and checklists With them you can diagnose a hydraulic system problem without removing the HTG Transmission the checklists will help you to determine where the problem may be Item numbers on the exploded view correspond with item numbers used throughout the Service Manual As you gain experience in servicing HTG Transmission you may find that some information in this Service Manual could be clearer and more complete If so let us know about it Don t try to second guess the Service Manual if problems occur that you cannot solve please contact our service department at 423 639 8151 or your local Parker approved distributor Servicing HTG Transmission should be safe and productive Visit our web site at www parker com pumpmotor DESIGN FEATURES HTG Transmission e High efficiency results in a cooler running system e Top housing is sturdy lightweight aluminum excellent at dispersing heat resulting in an overall cooler system e High capacity thrust bearing provides longer transmission life Torqmotor e Roller vane to reduce friction an
15. d internal leakage and to maintain efficiency e A patented orbiting commutator system for less wear and longer life e Aunique high pressure shaft seal e Manifold designed to improve operating efficiency e Roller vane and sealed commutation assure high volumetric efficiency and smooth low speed operation 5 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US General Information 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 HTG Transmission Preparation Make your troubleshooting easier by preparing as follows work in a clean well lighted place have proper tools and materials nearby have an air pressure source WARNING Since solvents are flammable be extremely careful when using any solvent Even a small explosion could cause injury or death WARNING Wear eye protection and be sure to comply with OSHA and other maximum air pressure requirements Keep hands clear of fan and moving parts can cause personal injury Shut off engine and let entire system cool before removing any component 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 d
16. emble seal and commutator 45 Apply clean grease to a new square cut seal ring and assemble it in the seal ring groove of rotor set side of the manifold Face shown goes towards the rotor set Assemble the manifold over the drive link and onto the rotor set Face shown towards commutator set Apply clean grease to a new seal ring and assemble it in the seal ring groove of manifold top side Assemble new seal ring flat side up into commutator Notice commutator seal is formed in a V shape the flat side faces towards end cover Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly VA Service Manual Series Product Name Place commutator over drive link onto manifold Assemble commutator ring The commutator and commutator ring are a matched set Assemble seal ring and end cover Install the three end cover bolts Install the three end cover bolts Place commutator over the end of drive link onto manifold with the seal ring face side up Place commutator ring on top of manifold and align the holes up with the bolt holes of housing Apply clean grease to a new seal ring and assemble it in the seal ring groove of end cover Picture shown is for a reverse time RH motor Picture shown is for a standard timed LH motor Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524
17. et pinched and goes up inside of receiver stem of charge pump cover Notice alignment tab on housing this is used to align or clock the end cover per model code View of picture alignment tab is at 12 00 o clock position View of picture alignment tab is at 12 00 o clock position 40 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly Service Manual Series Product Name Motor Assembly Place motor housing in soft jawed vice Warning If the torqmotor is not firmly held in the vise it could be dislodged during the service procedures causing injury Back up ring Housing requires assembling a new back up ring back up washer and new shaft seal Back up washer 41 Place front of housing nose pointed down and the vise jaws clamping firmly on the sides of the housing Notice alignment tab on housing this is used to align or clock the end cover per model code With a clean housing pull the two thrust washers with the bearing in the middle up on edge as shown in picture Place the thicker back up washer either side down into housing past the washer bearing package Back up washer will lay flat into groove of housing seal cavity Next put the thin flat washer either side down into housing laying on top of the back up ring Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 152
18. etermined 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 Improper replacement parts used in previous servicing Mechanical linkage problems such as binding broken or loose parts or slipping belts Service Manual Series Product Name Hydraulic Components If you think the problem is caused by a hydraulic component start by checking the easy to reach items Check all belts for cracks hardening or other signs of wear Check all pulleys fans and bolts to make sure they are tightened to specified torque value Look for leaks especially at coupling shaft and plugs If necessary replace filter Always replace with original Parker filter Torque to 115 135 in Ibs Visually check other components to see if they are loosely mounted show signs of leaks or indicate by other damage or wear Suspect Faulty Transmission Before the transmission is disassembled for repair make sure all control arm adjustments and engine speed requirements are per OEM specification Also make sure the parking brake is releasing fully on both sides If there is a defect in the transmission a right to left side performance difference should be noticeable To test for this condition run the vehicle at full forward throttle and control levers The vehicle should track nearly straight both on flat ground and on uphill grades Pa
19. ful 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 and other maximum air pressure requirements WARNING Never steam or use high pressure to wash hydraulic components Do not force or abuse closely fitted parts A WARNING Never attempt to tow push or pull equipment with another vehicle Towing will cause hydraulic transmission further damage If equipment needs to be moved make sure both transmission bypass valves are open and hand push Keep parts separate to avoid nicks and burrs Discard all seals and seal rings as they are removed from the HTG Transmission unit Replace all seal rings and any damaged or worn parts with genuine Parker Hannifin Corporation or OEM approved service parts 16 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Either plug the expansion Remove Transmission tube fitting or place tape unit from vehicle over the end of the expansion tube fitting to keep oil from leaking out Clean unit free of grass and other debris let dry and place on a clean working table NOTE If exchanging the Place an oil pan for oil hydraulic motor only collection under the unit follow these next Remove filter from unit drain seventeen steps Oil If a complete tear down is needed please go to FIG II on page 20 Remove
20. h cradle bushing pin hole to inner top housing pin Do not stake pins Apply synthetic oil on top of each cradle bushing Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly Trunnion arm Install control block Install swash block Align swash block to the control block Apply oil into swash block Darker I Service Manual Series Product Name Push the trunnion flush to inner top housing Install control block onto trunnion arm inside of top housing Install swash block subassembly onto cradle bearings in top housing Align swash block with control block using a small screwdriver Verify that swash block moves freely back and forth on bushing without binding or dragging Apply synthetic oil prior to installing thin washer into swash block Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly Service Manual Series Product Name Install thrust washer Install thrust bearing Install top washer Central spring Rotating group assembly 33 Install thin 125 thrust washer into swash block Install thrust bearing on top of thrust washer Install thick 250 thrust washer into swash block Apply synthetic oil to the top washer Place central spring onto pump shaft By holding all pistons tight in place turn upside down and position pisto
21. h out any burrs if needed with emery paper Clean seal area with a lint free cloth To assist alignment of seal install trunnion arm Place trunnion seal over Lightly apply synthetic oil to arm trunnion arm seal slide over the trunnion arm with the seal lip towards housing Seat trunnion arm seal With a 5 8 deep well socket gently tap socket with rubber hammer driving seal into place Trunnion arm seal Trunnion seal should be below top housing face 29 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Install pump shaft and Place the extended shaft bearing assembly into top through hole Seat shaft bearing to Push shaft and bearing bottom of top housing assembly to the bottom of the top housing Install pump seal Place seal over output shaft avoid any sharp edges while installing seal over the pump shaft Aid of socket Place socket on top of charge pump seal 30 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Seat charge pump seal Install snap ring Install the two cradle bushing Both cradle bushing in place Darker Lightly tap socket with a rubber mallet until seal is below snap ring groove Use internal snap ring pliers and insert snap ring into groove of top housing Place eac
22. her side of washer Remove swash block Inspect top and bottom surfaces for excessive wear Remove the square control block Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Remove both cradle Hemove and inspect both bushings cradle bushings for excessive wear pitting or scoring Light visual wear of coating is allowed Remove shaft seal snap With internal snap ring pliers ring remove snap ring Remove pump shaft and Tap top of shaft with a bearing assembly rubber mallet to loosen Keep assembly as level as possible not to damage shaft and housing Shaft and bearing When shaft is free from assembly housing assembly shaft seal will also be removed Remove trunnion arm Push trunnion arm in and remove Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Remove trunnion arm seal If necessary remove trunnion arm seal Position NOTE Make sure not to the flat edge of screw driver score the edges of housing under the lip of seal and lift while removing trunnion arm outward seal 28 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Install trunnion arm seal Starting with the top housing polis
23. ng the hydraulic system Clean the area around the filler caps before checking oil level Investigate and correct any external leak in the hydraulic system no matter how minor the leak Comply with Parker specifications for cleaning or replacing the filter CAUTION Do not weld braze solder or in any way alter any HTG Transmission component CAUTION Maximum operating pressure must not exceed recommended HTG Transmission pressure capacity CAUTION Always carefully inspect any system component that may have been struck or damaged during operation or in an accident Replace any component that is damaged or that is questionable gt gt BP N CAUTION Do not force any coupling onto the HTG pump coupling shaft as this could damage the unit internally A CAUTION Do not mix oil types Any mixture or any unapproved oil could deteriorate the seals Maintain the proper fluid level in the reservoir When changing fluid completely drain old oil from the system It is suggested also that you flush the system with clean oil Parker Pump Motor HPM Operation extends close technical cooperation and assistance If problems occur which you cannot solve please contact our service department at 423 639 8151 or your local Parker approved distributor 54 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Notes Series Product Name 59 Parker Hannifin Corporation Hydraulic Pump M
24. ns towards top of thrust washer Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Series Product Name Install rotating group over the charge pump shaft Oil top of barrel assembly End Block Install shock valve and spring NOTE Keep the shock valve in the same port as removed Install valve cap 34 Flip rotating group over and onto thrust washer Do not release pistons until properly seated onto top washer Press barrel down to feel piston and springs are compressing freely Apply synthetic oil to top of barrel assembly face Prepare end block for sub assembly Inspect face of end block to ensure no scratches are in between kidney ports and dowel pins are in place Turn end block to side insert the shock valve bullet noise first with the spring on the back side of shock valve Capture the spring into the valve cap hand start threads into end block assembly Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Assembly Service Manual Series Product Name Repeat shock valve installation opposite side Install shock valve and spring Install valve cap Torque valve cap Make sure end block is free of any debris apply oil to face of end block 35 Turn end block to side and insert the shock valve bullet nose first with the spring on the back side of shock v
25. oduct Name Remove charge pump pick Careful not to bend tube up tube and O ring Check O ring for any damage replace if needed Remove two charge pump cover bolts Remove charge pump Hemove and inspect the cover inside of charge pump cover for any scoring replace if necessary Remove charge pump Hemove both the charge rotor set pump rotor and stator Inspect for any damage either on the tips of rotor or stator lobes Replace if necessary Remove bypass valve clip Using a flat head screw driver push clip upward to release 23 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Remove bypass lever Pull bypass lever away from stem Remove bypass Pull bypass out of top housing Remove four end block Remove the four end block Screws screws notice that two of four bolts are longer than the other Inspect the threads on each bolt Remove end block Take out the entire end block Notice port plate may Caution While taking out stick to end block face end block may require holding down on the barrel to separate from port plate Remove valve cap Remove valve cap from end block 24 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Turn end block to side and Remove spring and shock remove s
26. otor Division Greeneville Tennessee USA Parker Hannifin Corporation Hydraulic Pump Motor Division 2745 Snapps Ferry Road Greeneville TN 37745 USA Tel 423 639 8151 FAX 423 787 2418 www parker com pumpmotor
27. pring and shock valve valve Repeat other side keeping NOTE Keep the shock the shock valves tagged it is valve in the same portas important to keep these two removed valves in the same hole location Remove port plate and Inspect for any damage to inspect the port plate If the brass side of port plate has heavy Note brass side of port scoring on face replace with plate faces rotating group new port plate Remove rotating group Place your fingers around with pistons each piston to ensure they do not fall out of barrel Pistons have to stay in original location of the barrel Check surface of rotation Inspect each piston one at group and sides of pistons a time to keep original for excessive wear indicated piston and spring to barrel by scoring or scratch marks position Remove pistons springs check bores for signs of scoring Remove central spring 25 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Disassembly Service Manual Series Product Name Remove top washer 250 thick Remove thrust bearing Remove bottom washer 125 thick Remove swash block Remove control block 26 Hemove top washer inspect for any pitting or galling to either side of top washer Remove thrust bearing inspect bearing rollers for any signs of pitting or galling to rollers Remove and inspect bottom thrust washer for any pitting and galling of eit
28. ransmission Series Since this is a general Service Manual the photographs and illustrations may not look exactly like the transmission being serviced The procedures therefore must be carefully read and understood before servicing If inspection or testing reveals evidence of abnormal wear or damage to the HTG Transmission or if you encounter circumstances not covered in the Manual STOP CONSULT THE EQUIPMENT MANUFACTURER S SERVICE MANUAL AND WARRANTY DO NOT TRY TO REPAIR OR SERVICE A HTG WHICH HAS BEEN DAMAGED OR INCLUDES ANY PART THAT SHOWS EXCESSIVE WEAR UNLESS THE DAMAGED AND WORN PARTS ARE REPLACED WITH ORIGINAL PARKER REPLACEMENT AND SERVICE PARTS AND THE UNIT IS RESTORED TO PARKER SPECIFICATIONS FOR THE HTG It is the responsibility of the mechanic performing the maintenance repairs or service on a particular HTG Transmission 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 HTG Transmission and c fully inspect and test the HTG Transmission and the hydraulic system to ensure that the repair or service of the HTG Transmission has been properly performed and that the HTG Transmission and hydraulic system will function properly Conversions 4 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual General Information Series Produ
29. rker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual General Information Series Product Name Troubleshooting Checklist Fluid Leakage 1 Fitting loose worn or Check amp replace damaged gasket or damaged O rings Torque to manufacturers specifications excess heat Operates Hot 1 Debris buildup Remove debris zi fan damaged m MH fan 3 a 4 level low or a fill to proper oil level or contaminated change filter refill with new oil 4 Excessive loading vehicle load 5 Air trapped in system Run vehicle forward and then T pm several times No or Low Power 1 level low or NENNEN fill to proper oil level or contaminated change filter and refill with new oil 2 wq valve open Turn to closed on 3 Excessive incondita Macc MN vehicle load 4 ann speed low PRE RI engine speed to correct value reverse several times component damage 7 Pulley or belt loose Tighten to specifications Noisy Unit 1 Oil level low or Either fill to proper oil level or contaminated change filter and refill with new oil 2 Excessive loading T vehicle load and below 3600 rpm reverse several times 5 Bypass valve open Turn to closed pue 7 n k Parker Hannifin Corporation af er Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual General Information Series Product Name Tools and Materials Req
30. roduct Name Torque each bolt to Torque each bolt to 45 55 ft specification los by going diagonal from each bolt Install side cover gasket Place the side cover gasket on top housing Install side cover Place the side cover on top of gasket and align the screw holes Install side cover screws Start one of the self tapping screws half way down Install side cover screws Start the second self tapping screw again only half way down 49 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Assembly Series Product Name Install side cover screws Repeat process until each screw has been started half way down Torque side cover screws Starting at one of the 1 4 20 screws torque to 100 Side cover is marked in 120 in lbs repeat process order how each screw is by following the marked torque number on the side cover plate Hand start the filter into the top housing hand tight Torque filter Using a socket and torque wrench torque the filter to N CAUTION 115 135 in lbs Use caution do not over torque causing Do not over torque hex plug damage Install bottom gasket Place the bottom gasket according to bolt pattern Aid of alignment pins If available use three alignment roll pins that fit the screw holes to help keep the gasket from moving out of place 90 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville
31. side cover Remove the five screws from the side cover and remove cover Remove gasket Remove gasket inspect for any damage replace if needed Loosen and remove four Notice that two of the four bolts bolts are longer these have to be returned in the same position Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Remove top housing from motor end cover Remove the entire motor assembly Replace O ring Installing new motor Install top housing onto motor end cover Darker Hemove top housing and set aside Remove the entire motor out from the top housing After you remove the motor the filter tube will be free to remove and replace O ring Place the two O rings on the end cover and outside cover O ring onto the new motor With the motor housing in a soft jaw vice install the top housing onto motor end cover Align these two components together pressing down on top housing to secure the end cover Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Disassembly Series Product Name Place the charge pump Push the charge pump tube pick up tube to the correct O ring inside of charge pump bolt position replace cover Notice that two of the torque bolts bolts are longer than other two Torque each bolt to 45 55 ft I
32. uired for Servicing Clean petroleum based solvent e To insure maximum transmission performance and life use a Parker recommended fluid and filter change schedule At 300 hour break in period change the oil and filter Subsequent oil and filter change intervals depend on the type of oil used Always change the filter when changing the oil Qualified Oils Parker GT Blend 1000 hour Castrol Syntec 5W50 500 hour Amsoil AW ISO 68 500 hour Shell TTF SB 500 hour Other 250 hour Must be premium grade synthetic based engine oil with a minimum viscosity grade of 15W40 Emery paper Vise with soft jaws Rubber mallet Air pressure source Arbor press Flat screwdriver Grease pencil or paint pen Small gear puller 1 4 torque wrench 270 300 in Ibs 100 120 in Ibs 200 240 in Ibs 50 70 ft lbs 350 400 ft lbs 45 55 ft lbs e Sockets 3 8 drive ratchet 5 16 15 16 9 16 T30 Torx Bit 13mm e Vise grip pliers Internal snap ring pliers Clean corrosion resistant grease Recommended grease is Mobil Mobilith SHC 460 or equivalent CAUTION Mixing greases that have different bases can be detrimental to bearing life 8 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Dimensional Data Series Product Name Mower Frame Drivers Seat Fi Transmissions Rear of Mower 9 Parker Hannifin Corporation Hydraulic P
33. ump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Dimensional Data Series Product Name Exploded View Typical Left Hand 10 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Dimensional Data Series Product Name Right Hand pun SCREW TORQUE 100 129 INI BS CN PITON BARREL ABBEMBLY 44am e bd I p RELEF VALVE 486004 0 04 ORE UB ABSEMBLY MD ORC PLUG PORMARO POTRO 00080031 p mee SCREW TORQUE 770 300 INLEB TORQUE 100 129 11 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Seal Kit Data Series Product Name SK000275 PARTS LIST FAN KIT LLL SK000276 PARTS LIST MOTOR KIT 240cc Right Hand Side DD SK000277 PARTS LIST MOTOR KIT 280cc Right Hand Side LL SK000278 PARTS LIST MOTOR KIT 310cc Right Hand Side LL SK000279 PARTS LIST MOTOR KIT 240cc Left Hand Side CS eee T 034005 SIDE COVER GASKET E 3 SK000279 SHEET 3 SERVICE BULLETIN 12 Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee USA HY13 1524 001 US Service Manual Seal Kit Data Series Product Name SK000280 PARTS LIST MOTOR KIT 280cc Left Hand Side DESCRIPTION O RING SIDE COVER GASKET a SK000281 PARTS LIST MOTOR KIT 310 cc
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