TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
13. MAIN FRAME DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
KNOWN INFO
6.
TEST OPTIONS
Cab controls and remote
Is continuity measured
Continuity Test.
control inoperative.
on the main frame
Cab control box OK.
LOAD solenoid har-
REASON FOR QUESTION
Linking harness OK.
ness?
Power to activate the main
Main junction box wiring
frame LOAD solenoid is
OK.
transferred from the main
POSSIBLE PROBLEMS
junction box to the
solenoid via this harness.
Main frame LOAD
Faults in this harness will
solenoid harness faulty.
prevent operation from
both the cab and remote
controls.
Replace main
frame LOAD
NO
solenoid harness
Fault not corrected.
YES
Notify supervisor.
Change 1
4-248
