TM 9-4940-568-34
2-30
Table 2-7. Crane Troubleshooting (CONT).
1. OVERLOAD SHUTDOWN SYSTEM (OSS) DISABLES CRANE FUNCTIONS,
BOOM UP, BOOM DOWN, TELESCOPE OUT AND HOIST UP (CONT).
(5) Set crane main POWER switch to
OFF position.
(6) Turn OFF FRS.
(7) Install cover on crane main junction
box.
(8) Place four clips on edge of cover
and tighten four screws.
Continued on next page.
VERIFY REPAIR (CONT).
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits a direct short may result. Damage to equipment, injury or death to personnel may result.
Do not stand under crane. Mechanical failure and operator error can cause injury or death to
personnel.
SCREW
TERMINAL 18
TERMINAL 19
TERMINAL 1
COVER
CLIP
JUNCTION
BOX
CRANE POWER
SWITCH
BOOM
CONTROL LEVER
HOIST
CONTROL LEVER
TELESCOPE
CONTROL LEVER
