AIR AND VACUUM SHIFT MAINTENANCE (Cont).
Inspect metal parts for cracks, breaks, wear, and other damage. Replace if damaged.
Inspect for broken or deformed spring. Replace spring if broken or deformed.
Apply thin coat of hydraulic fluid to surfaces of new preformed packings and internal metal parts.
Install guide screw (6) in cover (2).
Install new preformed packing (14), shifter fork (11), and piston shaft (13) in cover (2). Aline hole in side of piston
shaft with threaded hole In shifter fork.
Install screw (10) in shifter fork (11).
Install spring (12), two new preformed packings (9), access covers (8), and retaining rings (7).
Install plug (5).
Install new gasket (3) and cover (2) on power take-
off (4) with four screws (1).
Install power take-off light switch (see TM 5-3805-254-20).
Install floorboards and inserts (see paragraph 15-3).