TM 9-2320-260-34-2
15-60. LIFTGATE CLOSING CYLINDERS MAINTENANCE (M820A2) (Contd)
c. Cleaning and Inspection
1. For general cleaning instructions, refer to para. 2-8.
2. For general inspection instructions, refer to para. 2-9.
d. Assembly
CAUTION
Perform this task in a clean, dust-free area. Failure to do so may
result in damage to equipment.
NOTE
Coat all closing cylinder internal parts with lubricating oil before
assembly.
1.
Install new O-rings (8) and (9), new seal (6), and new O-ring (5) on actuating head (7).
2.
Install two new seals (14) and new O-ring (13) on piston (12).
3.
With piston rod (4) facing up in vise, install actuating head (7) and piston (12) on piston rod (4)
with nut (11).
4.
Wrap male threads on elbows (19), (20), (36), and (37), connectors (16) and (22), tee (18), and
hydraulic hoses (35) and (38) with antiseize tape.
5.
With housing (10) facing up in vise, install piston rod (4) in cylinder (10) with retaining nut (1).
Install grommet (3) and setscrew (2) on retaining nut (1).
6.
Install two connectors (16) on closing cylinder (15).
7.
Install connector (22) and tee (18) on check valve (21).
8.
Install elbows (19) and (20) on check valve (21) and tee (18).
9.
10.
Install two tubes (17) and (23) on tee (18), connector (22) and two connectors (16).
11.
Install two elbows (36) and (37) on closing cylinder (27).
e. Installation
1. Install closing cylinders (15) and (27) on main frame (28) and two clutches (34) with two
washers (26), new Iockwashers (25), screws (24), pivots (30), and four new cotter pins (29) and (33).
2. Connect hydraulic hoses (31) and (32) to elbows (19) and (20).
3. Connect hydraulic hoses (35) and (38) to elbows (36) and (37).
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