TM 9–2350–311–20–2
3–75
e.
CAB HYDRAULIC SYSTEM — CONTINUED
(5)
POWER PACK OPERATES CONTINUOUSLY
WHEN CAB POWER AND MASTER
SWITCHES ARE ON.
INITIAL SETUP
Tools
Artillery and turret mechanic’s tool kit
(SC 5180–95–CL–A12)
Replace power relay box
assembly electromagnetic
relay (para 8–13).
1.
Turn MASTER and CAB POWER switches to
OFF.
2.
Disconnect cannon plug at pressure switch.
3.
Turn MASTER and CAB POWER switches to
ON.
4.
Observe power pack operation.
5.
Turn MASTER and CAB POWER switches to
OFF.
Did power pack operate continuously?
Charge main accumulator
assembly nitrogen pressure
(para 19–4). If malfunction
persists, go to step B.
Perform zero-pressure check (para 6–10) on main
accumulator assembly.
Is pressure 500 to 550 psi (3448 to 3792 kPa)?
A
yes
no
yes
no
PRESSURE
SWITCH
PRESSURE
GAGE
Replace pressure switch
(para 6–6).
END OF TASK
B