716 Series Service Manual 1532
Contents
1. Hydraulic fluid as recommended by equipment manufacturer with viscosity no less than 50 SSU CAUTION Do not mix oil types Any mixture or a non approved oil could deteriorate the seals Maintain the proper fluid level in the reservoir When changing fluid T completely drain old oil from the system It is suggested also that you flush the system with clean oil especially if there was a major hydraulic component failure In addition run the system with no load for a period of time to allow the filters to clean up the oil Then change the filters before returning the machine to service Filtration Recommended filtration Beta 25 ratio of at least 2 Oil Temperature Maximum operating temperature 180 Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA 23 Maintenance Tips Adjust fluid level in reservoir as necessary 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 motor component Replace the component with original equipment only Do not cold straighten or bend any motor part Prevent dirt or other foreign matter from entering 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 e Comply with manufacturer s specifications for2. IGR Set Front 2917 X Solenoid Bolt Hex Seal Dust Seal High Pressure Solenoid Block Item 4 Item 1 IGR Set Hex Bolt 2904 1 021363 2904 2 021428 2904 3 021356 2904 4 021306 2904 5 021382 2904 6 021437 Parker Hannifin Corp Hydraulic Pump Motor Div Greeneville TN 37745 USA Item No 1 10 3 716 Exploded View Typical Flange End Locating Ring w Rollers Outer Inner w Rolls Valve Plate Description Bolt Hex Front Bearing Housing Flange O Ring IGR Set Shaft Commutator Plate Check Ball Center Block Plug Spool Port Seal Dust Seal High Pressure Parker Hannifin Corp 7 i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA 716 Series Exploded View Typical Cover End Item Description Bolt Hex Cover O Ring IGR Set Clip Shaft Commutator Plate Check Ball Center Block Plug Spool Port OONODOOARWND N Parker Hannifin Corp Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA 716 Series Exploded View Typical Optional Solenoid Item Description 12 Plug Spool Port 13 Spring Valve 11 Valve 15 Check Ball Solenoid Block 16 O Ring Solenoid 25 Solenoid Block Solenoid Block 18 Solenoid Bottom View 19 Hex Bolt Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA 10 Disassembly and Inspection Prepar
3. specifications designs availability and pricing are subject to change by Parker Hannifin Corp and its subsid iaries at any time without notice Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Parker Hannifin Corporation Hydraulic Pump Motor Division 2745 Snapps Ferry Road Greeneville TN 37745 USA Tel 423 639 8151 FAX 423 787 2418 Motion amp Control DG 6 96 7500 CONTENTS Section 1 General Information Page Definitloris iiri ete nt nt D ed n cs Ee Rees Inside Front Cover IntrOG COT i co tee dL et tia tian 2 Troubleshooting Guide 1e t c ct t ren ii i reram ea 3 Troubleshooting Check List ssssssssssssseeee eene 4 Tools and Material Required for Servicing amp Seal Kit Components 5 service Parts EISE etat eoe noe ar emotion tss 6 Exploded Assembly View rens 7 9 Section 2 Repair Disassembly amp Ns pachOM eiaa ersi een tuei iena E EE EA EE 10 15 Assembly retroactis eA 16 21 Solenoid Assembly crier ec B He teret eiae 22 Final GHecks i oen ret ete a t tar eite Es 23 Section 3 Maintenence Hydraulic Fluigs 1t itte E tea e eost erbe cut reet 23 Filtration Operating Temperature ssseeeeenme 23 Tips for Maintaining the system sse emen 24 Parker Hannifin Corp Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Introduction Ser
4. pressure lip seal 21 into the seal bore the longer internal bore and bottom it against the shoulder The seal must be installed with the inside lip pointing towards the inside of the motor Using an arbor press and suitable bearing installation tool the bearing 14 can then be pressed in after the seal 065 to 085 below the face of the flange 3 Install the dust seal 20 using a suitable seal driver in the outside seal bore of the flange The dust seal should be installed with the inside lip facing away from the flange and flush with the flange face 4 Position the center block so the piolt port or solenoid ports are on your right and lock in the vise SEE FIGURE A01 5 Place the o ring 3 in center block seal gland SEE FIGURE A02 Figure A02 16 Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Motor Assembly 6 Place commutator plate 7 on the center block 9 with the square ring groove facing up Align the 8 bolt holes in the plate with the 8 tapped holes in the body The holes will align in only 1 position Note Do not dislodge square ring seal 3 while positioning the commutator plate 7 SEE FIGURE A03 Figure A03 7 Insert the internal shaft through the commutator plate and center block with the spline snap ring groove up SEE FIGURE A04 Then place the counterbored at the splines valve plate on the shaft with the 7 port windows shar
5. wrenches Seal Kit Seal Kit Complete 2550 Includes P N Qty Description 1046 6 Body O Rings 1141 1 Dust Seal 2332 1 High Pressure Seal 032841 5 Solenoid Block O Rings 1156 1 Bearing Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA ltem Qty 1 8 2 1 3 6 4 1 5 2 6 1 7 2 8 4 9 1 10 1 1 11 1 1 12 2 13 1 14 1 15 4 16 5 17 1 18 1 19 2 20 1 21 1 25 1 Motor Disp 3 6 7 2 5 4 10 8 7 14 2 8 8 17 6 10 6 21 2 12 9 25 8 6 716 Series Service Parts List Part Number See Below M110C 6 1046 See Below 1660 See Below 1865 1021 PA 2534 7 8 14 O Ring Pilot Act PA 2535 7 8 14 O Ring Solenoid PA 3106 BSPP Pilot Act PA 3111 BSPP Solenoid PA 2817 Manifold Pilot Act PA 2532 2 1 4 19 BSPP PA 2532 1 7 16 20 O Ring 1825 open center 2792 closed center 75013 10 1826 1156 1320 032841 See Below 1824 with manual override 2891 without manual override 021442 1141 2332 1823 Item 6 ltem 17 Shaft IGR Set 2216 072 2917 1 2216 108 2917 2 2216 142 2917 3 2216 176 2917 4 2216 212 2917 5 2216 258 2917 6 Darker Motion amp Control Description Bolts 4 Dowel End Cover standard O Rings IGR Set Rear 2904 X Clip Shaft Commutator Plate Check Ball Center Block Front Bearing Housing Flange Valve Plug Spool Port Spring Bearing Check Balls Solenoid Block O Rings Solenoid Block
6. Div Greeneville TN 37745 USA Disassembly and Inspection 8 Loosen and remove the 8 5 16 24 bolts 1 remove the cover 2 locating ring check valve balls quantity 2 8 and rollers SEE FIGURES D10 amp D11 CAUTION The rollers will fall out so be ready to catch A them to prevent damage and loss Figure D11 9 Remove the outer rolls inner and valve plate SEE FIGURE D12 Figure D12 10 Lift shaft 6 up a short distance push the valve plate down and remove the 2 snap ring pieces 5 SEE FIGURE D13 Note With the snap ring removed the shaft will fall out of the motor unless you maintain a grip on the it 1 m Figure D13 Parker Hannifin Corp 13 i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Disassembly and Inspection 11 Rremove the valve plate Lift and remove shaft 6 SEE FIGURE D14 12 Remove commutator plate 7 and seal 3 13 If the locating ring and front bearing housing 10 did not seperate when the front bearing housing was removed they can be seperated by holding the locating ring by hand and tapping the cover with a soft nose hammer Caution f placed in a vise use minimal clamping force to prevent a permanent out of round condition SEAL REMOVAL 700 Series Flange shown for illustration purpose only 14 Remove dust seal 20 by leveraging it outward 15 To remove the high pressure lip seal the roller bearing must f
7. Motion amp Control Service Manual SM1532 Parker Motors Effective January 1 1996 Low Speed High Torque Hydraulic Motors 716 Series Definitions WARNING A WARNING refers to procedures that must be followed for the safety of the equipment operator and the person inspecting or A repairing the motor CAUTION A CAUTION refers to a mandatory procedure which avoids damage to the motor or other system components NOTE A NOTE provides key information to make a procedure easier or quicker to complete AX 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 Corp 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
8. ation Before Disassembly Before you disassemble the motor 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 motor Refer to page four for tools and other items required to service the motor and have them available Thoroughly clean off all outside dirt especially from around fittings and hose connections before disconnecting and removing the motor Remove rust or corrosion from coupling shaft Remove coupling shaft connections and hose fittings and immediately plug port holes and fluid lines Remove the motor from system drain it of fluid and take it to a clean work surface Clean and dry the motor before you start to disassemble the unit As you disassemble the motor clean all parts except seals in clean petroleum based solvent and blow them dry WARNING SINCE THEY ARE FLAMMABLE BE EXTREMELY CAREFUL WHEN USING AND SOLVENT EVENA 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 A REQUIREMENTS 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 motor Replace all seals seal rings and any damaged or worn parts with genuine Ross or OEM approved service par
9. cleaning or replacing the filter CAUTION Do not strike or drop the motor on the shaft end This will cause internal damage A CAUTION Do not weld braze solder or in any way alter any motor component A CAUTION Maximum operating pressure must not exceed recommended motor pressure A 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 CAUTION Do not force any coupling onto the motor coupling shaft as this could damage the A unit internally Parker Hannifin Corp extends close technical cooperation and assistance If problems occur which you cannot solve please contact our Parker Technical Service Representative or local Parker Distributor See the back cover of this manual for our address phone and fax numbers 24 Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA
10. els with the short dowels inside the locating ring and to align the bolt holes with the holes in the locating ring bolt hole pattern will only match one way SEE FIGURE A19 24 Install the 8 lubricated bolts and torque diagonally to 15 ft Ibs A Increase torque diagonally 5 foot lbs on each bolt B Rotate the shaft by hand through several rotations C Repeat steps A amp B until torque is 30 foot Ibs SEE FIGURE A20 Figure A20 Parker Hannifin Corp 21 i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Solenoid Assembly 1 Place 4 check balls on their seats on the center block 15 SEE FIGURE A21 2 Place 5 O rings 16 in the grooves on the solenoid block 17 SEE FIGURE A22 Sm Eu Figure A22 3 Place solenoid valve assembly on the center block insert bolts and torque to 15 ft lbs SEE FIGURE A23 The assembly of the Motor is now complete except for keys nuts etc at installation if applicable See final checks Figure A23 22 Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA General Final Checks Pressurize the motor with 100 p s i dry air or nitrogen and submerge in solvent to check for external leaks Port with IN cast under in on housing 18 indicates shaft rotation e Check operation of the motor with a test stand Hydraulic Fluid Keep the hydraulic system filled with one of the following
11. ge Replace parts as needed If your motor has a thru shaft option and the seals were leaking the entire cover must be replaced Thru covers contain no servicable parts Figure D19 Parker Hannifin Corp 15 i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Motor Assembly Replace all seals and seal rings with new ones each time you reassemble the motor unit Lubricate all seals and seal rings with oil or clean grease before assembly NOTE Individual seals and seal rings as well as a complete seal kit are available The parts should be available through most OEM parts distributors or Parker distributors Contact your local dealer for availability 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 and from port and sealing areas WARNING SINCE THEY ARE FLAMMABLE BE EXTREMELY CAREFUL WHEN USING ANY A 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 PROCEDURE 1 Before assembling the flange seals and bearing visually inspect the flange bores for deep scratches raised material of sharp edges that would interfere with assembly or cause leaks 2 Using a suitable installation tool press the high
12. irst be removed Use a suitable bearing puller while taking care not to damage the flange Once the bearing is removed the seal can be pushed out of the flange using a blunt instru ment SEE FIGURE D15 Caution Do not scratch the flange seal area that would possibly create a leak path 14 Motion amp Control Figure D14 Figure D15 Parker Hannifin Corp Hydraulic Pump Motor Div Greeneville TN 37745 USA Disassembly and Inspection Pilot Option To change pilot from normally parallel to normally series or vice versa Also valid for solenoid shift motors 1 Remove the plugs 12 on the center block 9 SEE FIGURE D16 Figure D16 2 Remove the spool 11 and spring 13 SEE FIGURE D17 3 Looking at the port surface install the spool with A the double or wide land nearest the pilot port for normally parallel operation SEE FIGURE D18 B the double or wide land opposite the pilot port for normally series operation SEE FIGURE D19 4 The spring is always located on the side opposite the pilot port Figure D17 SEE FIGURES 18 amp 19 The disassembly of the motor is completed PARTS INSPECTION Inspect the shaft for a smooth polish in the bearing and seal areas If scratched polish with fine emery paper in circumferential direc tion If pitted or if scratches are deep replace shaft and check the rest of the motor for scratches galling or contamination dama
13. l rings Correct heat problem If bolts are loose because of excessive pres sures as indicated by most or all being loose replace bolts amp advise customer to correct the pressure regulation Replace bolts Replace seal Replace shaft and seal 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 temperat ure of operation Check reservoir fluid level Replace worn IGR set Locate excessive heat source usually a restric tion or lack of an oil cooler in the system and correct the condition Locate blockage source and repair or replace Disassemble motor identify and remedy cause Locate source and eliminate cause Repair or replace worn pump Reset relief look for contamination or replace CAUTION Seals in the system will shrink harden or crack if fluid temperatures exceed 180 F A 82 2 C resulting in loss of ability to seal Darker Motion amp Control Parker Hannifin Corp Hydraulic Pump Motor Div Greeneville TN 37745 USA Service Tools amp Materials Seal Kit Tools and Materials Required to Service the 716 Series Clean petroleum based solvent Emery paper Vise with soft jaws Air pressure source Screwdriver Tape Breaker bar or impact wrench Torque wrench 50 ft lbs Socket 1 2 inch 1 4 inch Allen wrench Adjustable crescent wrench or hose fitting
14. ng 3 in cover 2 seal groove Assembly grease can be used to hold the o ring in place during assembly SEE FIGURE A10 Figure A10 18 Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Motor Assembly 14 Place the cover 2 so the port markings IN IN are lined up with the corresponding ports Also check the square ring seal 3 to verify that it hasn t dropped out SEE FIGURE A11 15 Install lubricated bolts 1 and torque diagonally to 15 ft Ibs A Increase torque diagonally 5 foot lbs on each bolt B Rotate the shaft by hand through several rotations C Repeat steps A amp B until torque is 30 foot Ibs SEE FIGURE A12 16 Turn motor right side up in the vice and install the square cut seal 3 in the center block seal gland SEE FIGURE A13 17 Place the commutator plate on the center block with the square ring groove facing up Align the 8 bolt holes with the 8 tapped holes in the center block SEE FIGURE A14 Darker Motion amp Control Figure A11 Figure A12 Figure A13 Figure A14 Parker Hannifin Corp 19 Hydraulic Pump Motor Div Greeneville TN 37745 USA 18 19 20 21 22 20 Motor Assembly Place the valve plate with the seven port window s sharp edge facing the commutator plate over the splines of the shaft The plate should be positioned one tooth off the opposite end valve plate when viewing val
15. nifin Corp Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Troubleshooting Guide 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 motor unit Preparation Make your troubleshooting easier by preparing as follows Work in a clean well lighted area Have proper tools and materials nearby Have an adequate supply of clean petroleum based solvent Prior to any motor disassembly plug the open ports and case drain Clean all dirt from the outside of the motor Prior to assembly lightly oil all seals rollers rolls and the threaded bolt ends WARNING A Since solvents are flammable be extremely careful when using any solvent even a small explosion or fire could cause injury or death WARNING Wear eye protection and comply with OSHA and other maximum air pressure requirements A Darker Motion amp Control Preliminary Checks Hydraulic systems are often trouble free Therefore check the following easy to check items first such as e 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 parts or chain loose parts or slipping belts Hydraulic C
16. omponents If the motor has low speed or torque look at the check list on the next page first Since these motors main tain volumetric and torque efficiencies during their useful life the problem is usually elsewhere in the hydraulic system However there are hydraulic system problems which can drastically reduce the long life designed into these motors Three key areas to check are Temperature Do not exceed 180 F Fluid Viscosity at the maximum temperature must exceed 50 ssu Filtration A Beta 25 ratio of at least 2 Parker Hannifin Corp 3 Hydraulic Pump Motor Div Greeneville TN 37745 USA Trouble Oil leakage Significant loss of speed under load Low mechanical efficiency or undue high pressure required to operate motor Lack of pressure Troubleshooting Checklist Cause 1 Hose fittings loose worn or damaged Motor section seal rings 7 deteriorated by excess heat Tie bolt loose 4 Broken tie bolts Internal shaft seal worn or damaged Worn shaft and internal seal Lack of sufficient oil supply 2 High internal motor leakage 3 Excessive heat Line blockage Internal interference Excessive binding or loading in system external to motor unit 1 Low flow output of pump Relief valve set incorrectly or not closing completely Remedy Check amp replace damaged O Rings Torque to manufacturers specifications Replace oil sea
17. p edge facing the commutator plate SEE FIGURE A05 Next put both snap ring halves 5 into the snap ring groove on the shaft 6 Hold the snap rings in place with pliers while gently tapping the shaft down seating the snap rings into the counterbore SEE FIGURES A05 Figure A04 Figure A05 8 Place the square cut seal 3 in the commutator plate 7 seal gland SEE FIGURE A06 Figure A06 Parker Hannifin Corp 17 i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Motor Assembly 9 Place the inner counterbored side down on the splines so that the semi circular roll pockets are between the rotary valve port windows SEE FIGURE A07 Figure A07 10 Place the outer over the inner and insert the rolls The rolls should not block the ports in the valve plate Place the check balls on their seats on the commutator plate Assembly grease can be used to keep the check balls in place during assembly SEE FIGURE A08 Figure A08 11 Place the locating ring over the inner with the square ring groove up and the check ball counterbores over the check balls Align the 8 bolt holes with the commutator holes SEE Figure A09 12 Alternate inserting long and short rollers between the outer and locating ring to match up with 4 dowels in the cover 2 NOTE The difference between rolls and rollers is that rolls have square ends and rollers have a radius on the end Figure A09 13 Place o ri
18. ts Parker Hannifin Corp i Hydraulic Pump Motor Div Motion amp Control Greeneville TN 37745 USA Disassembly and Inspection Reference Exploded Assembly View 1 Mount the motor in a soft jawed vice shaft up clamping on the cover assembly Remove manifold port o rings if applicable SEE FIGURE D1 2 Remove the 8 5 16 24 bolts 1 SEE FIGURES D2 3 Lift front bearing housing flange 10 by lightly tapping the flange up off the dowels with a soft hammer Do not remove the dowel pins SEE FIGURES D3 4 Remove the locating ring carefully to prevent rollers from falling or remove rollers with a magnet SEE FIGURE D4 Caution The rollers amp check balls will fall out so be ready to catch them to prevent damage and loss Note The check balls may fall into the bolt holes or into the commutator ports Darker Motion amp Control Figure D1 Figure D2 _ _ Figure Figure D4 Parker Hannifin Corp Hydraulic Pump Motor Div Greeneville TN 37745 USA Disassembly and Inspection 5 Remove outer rolls inner and valve plate SEE FIGURES D5 D6 D7 Figure D6 6 Remove commutator plate assembly 7 and seal 3 SEE FIGURE D8 7 Turn motor assembly upside down and clamp center block 9 in vise SEE FIGURE D9 12 Darker Motion amp Control Figure D5 Figure D7 Figure D8 Figure D9 Parker Hannifin Corp Hydraulic Pump Motor
19. ve plate port timing with respect to the commutator plate SEE FIGURE A15 Install a o ring into the grove in the commutator plate 7 then place the check balls 8 on their seats on the commutator plate Assembly grease can be used to hold the check balls in place during assembly SEE FIGURE A16 WARNING Do not rotate the locating ring or check balls will drop into bolt holes Place the inner over the splines of the shaft Position the inner so the semi circular roll pockets are between the rotary valve port windows SEE FIGURE A17 Place the outer over the inner and insert the rolls into the inner pockets NOTE The difference between rolls and rollers is that rolls have square ends and rollers have a radius on the ends Place the locating ring section onto the commutator plate with the check ball counterbored facing downward over the balls Align the 8 bolt holes with the commutator holes Place the rollers in position alternating long and short to match up with the 4 dowels in the front bearing housing flange 10 SEE FIGURE A18 Darker Motion amp Control Figure Al 6 Figure A17 Figure A18 Parker Hannifin Corp Hydraulic Pump Motor Div Greeneville TN 37745 USA Motor Assembly 23 Install a square ring seal 3 into the groove of the front bearing housing flange 10 Place the front bearing housing w square ring over the shaft and onto the locating ring Be sure to align the 4 dow
20. vice Manual for Series 716 Two Speed High Torque Motor This service manual has one purpose to guide you in maintaining troubleshooting and servicing the 716 Two Speed High Torque Motor These motors provide long life while operating with low radial side loads Read the trouble shooting information to eliminate non hydraulic causes and hydraulic system problems The check list identifies hydraulic system and possible motor component problems The two column format of the Disassembly and Inspection and Assembly sections make it easier to conduct major work on the motor Column one explains the procedure in detail Column two illustrates this procedure with photographs Read all material carefully and pay special attention to the notes cautions and warnings The component part names and item numbers assigned on the exploded assembly views corresponds with names and item numbers in parentheses used in the disassembly and assembly procedures Service part number charts display exploded view item numbers and part numbers Obtain service parts from the Original Equipment Manufacturer or your local Parker distributor We welcome suggestions to make this manual clearer or more complete If you are stuck contact Parker Hannifin Corp at the Hydraulic Pump Motor Division Don t second guess the manual Following this safe and productive procedure results in restoring the reliable long life operation engineered into the motor 2 Parker Han
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