Parker HTR Series Maintenance Instructions & Parts List

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Parker HTR Series Maintenance Instructions & Parts List Manual pdf 1 page image

PM - HTR - CAutomation Actuator DivisionWadsworth, Ohio 44281April 1, 1994Rev. August 1999HTR Series ActuatorsMaintenance Instructions & Parts ListProvide Model Number and Serial Number When Ordering Spare Parts.GENERALHTR Series Hydraulic Rack & Pinion Actuators are designedfor a maximum operating pressure of 3,000 psi non-shock.The actuator consists of a Pinion and one or two Rackslocated within a Housing. Pressurization of alternate cylinderport(s) results in shaft rotation.The gear chamber has been filled with a Moly grease contain-ing a minimum Molybdenum Disulfide (MSO 2 ) content of 3%.In the event that maintenance is required, the following stepsshould be used as a guide:ASSEMBLY AND DISASSEMBLY PROCEDURESA. Inspection & Replacement of End Cap Seals, #9.1. Place actuator in the mid-stroke position as shown.Remove Tie Rod Nuts, #10, from Tie Rods, #13.2. Pull End Cap, #11, free from Cylinder Tube , #12.3. Inspect and/or replace End Cap O-Ring, #9.Lubricate Seal and End Cap before reinstalling.4. Replace End Cap, #11, on Cylinder Tube, #12, andassemble Tie Rod Nuts, #10 to Tie Rods, #13.5. Torque Tie Rod Nuts per table.B. Inspection & Replacement of Wear Rings, #4, PistonSeals, #5, and Cylinder O-Ring, #8.1. Repeat Steps A1 and A2.For Models HTR75 through HTR 600:2. Remove Rack Bolt, #7.3. Screw two (2) threaded rods into the tapped holesin Piston, #16, and pull free from Cylinder Tube, #12.For Models HTR.9 through HTR45:4. Pull Cylinder Tube, #12, free from Housing, #2.5. Remove Rack Bolt, #7.For All Models6. Inspect Piston, #16, and replace Piston Seal, #5.7. Inspect and/or replace Wear Rings, #4.8. Inspect and/or replace Cylinder O-Ring, #8.9. Replace Cylinder Tube, #12 to Housing, #2.10. Slide Piston, #16, with Piston Seal and Wear Ringsassembled onto it, into Cylinder Tube, #12, until itcontacts Rack, #17.11.Replace Rack Bolt, #7 and torque per table.Caution: Nylon Slug, #6, is designed to prevent RackBolt from vibrating loose during operation; replace asrequired.12.Replace End Cap, #11, and Tie Rod Nuts, #10; torqueper table.C. Inspection and Replacement of Pinion and BearingRetainer O-Rings, #1 and #24.1. Loosen Lock Screw, #19.Caution: Failure to do so will damage threads.2. Using spanner wrench, remove Bearing Retainer,#25, by turning counter-clockwise.3. Remove Bearings, #22, and Pinion, #23.Caution: Make match marks to re-establish thecorrect timing.4. Inspect and/or replace Pinion O-Ring, #1, located atthe "front" or blind side of Housing #2.5. Reinstall Bearings, #22, and Pinion #23.6. Inspect and/or replace Bearing Retainer O-Ring,#24, located on outside diameter of Bearing Retainer,#25.7. Inspect and/or replace Pinion O-Ring, #1, located oninside diameter of Bearing Retainer, #25.8. Apply Moly Grease to Bearing Retainer Threads andreinstall into Housing, #2.9. Torque Bearing Retainer, #25 per table.10.Install and tighten Locking Screw, #19, per torquetable.D. Complete Disassembly of Actuator.1. Repeat Steps A1 and A2.2. Repeat Steps B2 through B5.3. Repeat Steps C1 and C3.4. Caution: Make match marks to re-establish thecorrect timing.5. Push Rack from either end to remove from housing.E. Reassembly of Actuator.1. Follow previous procedures for reassembly of allactuator parts. Refill the gear chamber with MolyGrease with a minimum MSO2 content of 3%; suchas Texaco Molytex EP2.

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