TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
16.1 MAIN FRAME, HOOK ARM, AND WINCH DO NOT OPERATE (MODEL B ONLY).
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic's: Automotive
BAP loaded on the CBT
(SC 5180-90-N26)
Engine turned off (TM 9-2320-279-10)
Parking brake applied (TM 9-2320-279-10)
Wheels chocked (TM 9-2320-279-10)
START
1.
TEST OPTIONS
KNOWN INFO
Visual inspection.
Error Code, EC 01, EC
Are the quick-disconnect
08 and/or EC 19.
couplings to the HEMTT
REASON FOR QUESTION
chassis installed com-
POSSIBLE PROBLEMS
pletely and properly
Hydraulic fluid flow to the
LHS may be blocked at
Quick-disconnect
the quick-disconnect
couplings not installed
fittings if the fittings are
properly.
not installed properly.
Hydraulic lines, hoses, or
fittings faulty.
Cab digital control box
faulty.
Cab interface wiring
Properly install
harness faulty.
quick-disconnect
NO
Digital controller wiring
fittings.
harness faulty.
Free flow valve faulty.
Digital control box faulty.
YES
4-388.2
4- 6
Change 1
