TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
11. HOOK ARM DOES NOT LOAD IN MANUAL MODE.
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Multimeter (ANURM105C)
Engine turned off (TM 9-2320-279-10)
Tool Kit, General Mechanic's: Automotive
Parking brake applied (TM 9-2320-279-10)
(SC 5180-90-N26)
Wheels chocked (TM 9-2320-279-10)
Personnel Required
Two
START
1.
KNOWN INFO
TEST OPTIONS
Error Code, EC 05 and/or
Visual inspection.
Does the hook arm
EC 17.
load with either the
REASON FOR QUESTION
cab control or the
POSSIBLE PROBLEMS
remote control?
To determine if the fault
is located in the remote
Function switch faulty.
control circuit, cab
LHS MODE SELECT
circuit, or the part of the
switch faulty.
circuit common to both.
Cab control box faulty.
Remote linking harness
faulty.
Remote control harness
faulty.
MODEL A, Go
Remote control unit
to Step 6.
NO
faulty.
MODEL B, Go
Linking harness faulty.
to Step 12.
Main junction box wiring
faulty.
Hook arm load solenoid
YES
harness faulty.
Directional control valve
faulty.
Change 1
