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Model: 02-7836C0110
12 Ton (10.87 Metric) Axle Jack
08/2010| Rev. 02
Page | 2
6.0
MAINTENANCE
6.1
GENERAL
All maintenance and/or repair work should be done using good workmanship practices and proper tools.
The work area should be clean and free of dirt.
When O-rings and backup rings are removed, every effort should be made to avoid the contact of tools with the critical
surfaces of parts. Surface deformities could cause degradation of seals and failure.
It is good practice to replace all O-rings and backup rings once removed. Cut and damaged rings normally result in fluid
leakage.
At this time flush old hydraulic fluid and dirt from overall system and replenish with new, clean hydraulic fluid.
6.2
SERVICING JACK
To Disassemble Jack
2. Collapse jack ram.
3. Remove vent screw and drain all fluid from reservoir.
4. Remove cap screws (Item 6) surrounding jack cylinder, then remove flange (Item 5).
5. Lift cylinder from jack base (Item 17). Operate jack hand pump to help remove cylinder.
6. Remove retaining rings (Items 33, 16 and 15).
7. Separate rams and replace all seals including retaining rings.
To Re-assemble Jack
1. Re-assemble in reverse order of above.
2. Torque each cap screw (Item 6) to 50
— 55 ft-lbs (67.79
74.57 N-m).
6.3
REMOVING AND SERVICING PUMP
NOTE: If pump is found faulty, call the factory for replacement or replace seals as follows:
1. Review Appendix I: HC-2485 Hand Pump Parts List during the following procedure:
2. Drain all fluid from reservoir
3. Remove pump from jack
4. Remove cotter pin from clevis pin
5. Remove four (4) socket head cap screws
6. Remove flanges
7. Remove tube assembly
8. Replace O-rings and backup ring. (See Appendix I for kits available)
9. Re-assemble in reverse order
10. Torque each three-eighths inch (3/8") socket head cap screw to 20 - 25 ft/lbs (27.12 - 33.89 N-m). Torque each one-
quarter inch (1/4") socket head cap screw to 6 - 7.5 ft-lbs (8.13 - 10.17 N-m).
6.4
JACK FUNCTION LOAD TEST
1. Take all necessary precautions to prevent injury.
2. Always jack against a load and never against the jack itself.
3. Do not exceed a test load equal to the jack rated capacity plus 10%.
4. Test annually.
Summary of Contents for 02-7836C0110
Page 10: ...Model 02 7836C0110 12 Ton 10 87 Metric Axle Jack 08 2010 Rev 02 Page 7...
Page 11: ...APPENDIX I Hydraulic Schematic...
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Page 13: ...Hydraulic Schematic...
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Page 15: ...APPENDIX II HC 2485 Hand Pump Parts List...
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Page 21: ...APPENDIX III Safety Data Sheet MIL PRF 5606 Hydraulic Fluid...
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Page 35: ...APPENDIX IV Declaration of Conformity...
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