TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
11. HOOK ARM DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY) (continued).
KNOWN INFO
10.
TEST OPTIONS
Voltage Test.
Operates only with
Are 2228 volts mea-
remote control.
sured at the selector
REASON FOR QUESTION
Function switch OK.
switch (orange wire)?
The selector switch
POSSIBLE PROBLEMS
determines the mode of
operation for the LHS.
LHS MODE SELECT
An open circuit within the
switch faulty.
LHS MODE SELECT
Cab control box faulty.
switch will prevent hook
arm load operation.
Repair cab control
NO
box (para 4-71).
YES
4-212
Change 1
