ARMY TM 5-5420-212-23
MARINE CORPS TM 08676A-23/2
2-27 HYDRAULIC JACK 20T
This task covers:
Tool Kit, General Mechanic's, Automotive (1, Appendix B, Section III)
Lubricating oil, (2, Appendix C)
Jack placed on raised, flat, clean surface
Inspect the hydraulic jack for leaks and cracks; broken, damaged or missing parts.
Report full details of jack damage to Direct Support. A damaged swivel cradle may be replaced otherwise the
jack shall be replaced with a serviceable item.
Special care must be taken when disassembling components, to ensure freedom from grit, etc.
Loosen release valve screw (1) 1 - 1 1/2 turns and press ram (2) down as far as it will go.
Unscrew and remove keeper plate (3), from swivel cradle (4).
Remove cap pin (5), lock washer (6), swivel cradle (4) and swivel cradle seat (7) from ram (2).
Clean components with a clean cloth soaked in hydraulic oil then wipe dry with a clean cloth.
Inspect components for wear, cracks, burrs and chips. Ensure cap pin (5) is not bent.
Position cradle seat (7) and swivel cradle (4) on ram (2), and secure to ram (2) with cap pin (5) and lock washer
Screw keeper plate (3) into swivel cradle (4).