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12 TON AXLE JACK
6.0
MAINTENANCE
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.
6.1
SERVICING JACK
TO DIS-ASSEMBLE JACK
1.
Collapse jack ram.
2.
Remove vent screw and drain all fluid from reservoir.
3.
Remove cap screws (Item 13) surrounding jack cylinder, then remove retaining ring
(Item 15).
4.
Lift cylinder from jack base (Item 16). Operate jack hand pump to help remove cylinder.
5.
Remove retaining rings (Items 23, 24 and 25).
6.
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 13) to 50—55 ft-lbs.
6.0 Maintenance continued on following page.
