TM 5-5420-234-14&P
5-2. DIRECT SUPPORT TROUBLESHOOTING (continued).
6.
MAIN FRAME, HOOK ARM, AND WINCH DO NOT OPERATE OR OPERATE
SLOWLY.
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Adapter, Straight, Pipe to Boss (TCM
Engine turned off (TM 9-2320-279-10)
Adapter, Straight, Pipe to Tube (TCM20-1/2JIC-V)
Parking brake applied (TM 9-2320-279-10)
Gage, Pressure, Dial Indicating (151469)
Wheels chocked (TM 9-2320-279-10)
Hose Assembly, Nonmetallic (HFF20-060)
Tee, Tube (203102-8-8S)
Tool Kit, General Mechanic's: Automotive
(SC 5180-90-N26)
Union, Pipe to Tube (GAH20-1/4 NPT-V)
START
1.
TEST OPTIONS
KNOWN INFO
Can free flow
Free Flow Valve Test.
Unit troubleshooting
solenoid valve
completed.
REASON FOR QUESTION
manual push button
POSSIBLE PROBLEMS
be pushed in?
If the free flow solenoid
valve is faulty (sticking),
Free flow valve faulty.
the vented relief valve will
Relief valve faulty.
stay open and the
HEMTT hydraulic system
appropriate working
faulty.
pressure will not develop.
Replace free
NO
flow valve (para
YES
