TM 9-2320-260-20
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
POWER LIFTGATE (M820A2)
69. LIFTGATE WILL NOT OPERATE
Step 1. Check hydraulic oil reservoir for proper level.
NOTE
Be sure platform is at ground level when checking or filling oil
reservoir.
Fill to proper level (LO 9-2320-260-12).
Visually inspect control linkage for damage.
Step 2.
Replace if damaged (para. 13-52).
Step 3.
Check if power takeoff is engaged.
a. Engage power takeoff control (TM 9-2320-260-10).
b. If power takeoff does not engage or stay engaged, notify your supervisor.
Step 4.
Check all hydraulic lines for leaks and breaks.
a. Tighten loose fittings.
b. If cracked, frayed, or leaking, notify your supervisor.
Step 5.
Check hydraulic pump motor for cracks and leaks.
a. Tighten loose fittings.
b. Replace hydraulic pump motor if cracked or leaking (para. 13-51).
END OF TESTING!
70. PLATFORM STOPS BEFORE REACHING STOWED POSITION OR STOPS ABOVE BODY FLOOR
WHEN RAISED FROM THE GROUND
Check for loose or bent lift frame adjusting bolt.
a. Tighten adjusting bolt.
b. If adjusting bolt is damaged, notify your supervisor.
END OF TESTING!
71. PLATFORM CLOSES AT ANGLE OTHER THAN STRAIGHT UP
Check closing kickout bolt for breaks and damage.
If kickout bolt is broken or damaged, notify your supervisor.
END OF TESTING!
72. LIFTGATE OPERATES SLOW OR JERKY
NOTE
Ensure platform is at ground level when checking or filling oil
reservoir.
Step 1. Check oil reservoir for proper oil level.
Fill to proper level (LO 9-2320-260-12).
Step 2. Visually inspect moving parts for grease lubrication and damage.
a. Lubricate at grease points (LO 9-2320-260-12).
b. If damaged, notify your supervisor.
END OF TESTING!
2-86
