4-59. FRONT AND REAR JACKS/SAFETY CHAIN ASSEMBLY - REPLACE.
This Task Covers:
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Jack stands (Appendix B, Section III, Item 2)
Nuts, self-locking (Appendix H, Section II, Item 11).
Cotter pin (Appendix H, Section II, Item 3).
Unit shut down and cool.
a. Removal. (Refer to Figure 4-59).
Chock trailer wheels before performing any maintenance. Unit could roll and
Support lunette (1) with jack stand or other suitable brace.
Raise front jack (2) until it is above the ground.
Remove cotter pin (3) from jack pin (4).
Remove jack pin (4) from front jack (2).
Slide front jack (2) from mount sleeve (5).
Support trailer axle (6) with jack stand. (para. 4-60).
Hold scissors jack (7) with one hand and pull out pin (8) with other hand from side of jack guide (9).
Slide scissors jack (7) down and out of jack guide (9).
Remove two cotter pins (10) from two pins (11), releasing yoke (12) from safety chain bracket (13), and safety
chain (14) Typical two places.
Remove cotter pin (15) from pin (16), releasing hook (17) Typical two places (11) Remove two self-locking nuts
(18), safety chain bracket (13) and two hex cap screw (19) from trailer frame (20) Typical two places. Discard