TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
10. NO TRANSIT LIGHT DOES NOT OPERATE PROPERLY (MODEL A ONLY)
(continued).
3.
TEST OPTIONS
KNOWN INFO
Refer to para 4-94.
NO TRANSIT WHEN LIT
Is the hook arm
indicator bulb light never
down proximity
REASON FOR QUESTION
comes on.
switch adjusted
NO TRANSIT WHEN LIT
properly?
If the gap between the
indicator bulb OK.
hook arm down proximity
switch and the hook arm is
POSSIBLE PROBLEMS
too large, the switch will
not sense when the hook
Hook arm down proximity
arm is stowed.
switch adjustment.
Hook arm down proximity
switch faulty.
Cab control box faulty.
Linking wire harness
faulty.
Adjust hook arm
Main junction box
down proximity
NO
harness faulty.
switch (para 4-94).
Relay no. K3 faulty.
YES
4-170
Change 1
