TM 9-2320-260-34-2
15-59. LIFTGATE CYLINDER MAINTENANCE (M820A2) (Contd)
CAUTION
Perform this task in a clean, dust-free area. Failure to do so may
result in damage to equipment.
Coat all parts with lubricating oil before assembly.
1. Using arbor press, install new bushing (16) on piston rod (4).
2. Install two grease fittings (13) on liftgate cylinder (14).
3. Install new O-rings (8) and (9), new seal (5), and new O-ring (6) on front head (7).
4. Install new seal (11) and new O-ring (10) on piston (12).
5. Install grommet (2) and setscrew (1) on retaining nut (3). Do not tighten setscrew (1).
6. With piston rod (4) positioned vertically in vise, install front head (7), piston (12), and nut (15)
on piston rod (4).
7. With liftgate cylinder (14) positioned vertically in vise, install piston rod (4) in liftgate cylinder (14)
with retaining nut (3).
8. Tighten setscrew (1) on retaining nut (3) and liftgate cylinder (14).
e. Installation
Position liftgate cylinder (14) on main frame (18), and install liftgate cylinder (14) on main
1.
frame (18) with straight pin (22) and two new pins (17).
Install piston rod (4) on lift frame (20) with straight pin (21) and two new cotter pins (19).
2.
3.
Install nipple (23), elbow (24), and adapter (25) on Iiftgate cylinder (14).
Install fluid restrictor (28) on liftgate cylinder (14).
4.
Install hydraulic tubing (27) and (26) on fluid restrictor (28) and adapter (25).
5.
15-228
