TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
16. MAIN FRAME, HOOK ARM, AND WINCH DO NOT OPERATE (continued).
KNOWN INFO
TEST OPTIONS
3.
Continuity Test.
Remote control OK.
Is continuity mea-
sured on the cab
POSSIBLE PROBLEMS
REASON FOR QUESTION
control box function
switch, with the
Function switch faulty.
switch in the load or
The function switch is
unload position?
common to both hook arm
and main frame functions
when using the cab
controls. Therefore, if the
function switch fails neither
operation will work.
Repair cab control
NO
box (para 4-71).
Fault not corrected.
YES
Notify supervisor.
4-354
