5-2. DIRECT SUPPORT TROUBLESHOOTING (continued).
HOOK ARM DOES NOT LOAD.
Tools and Special Tools
Union, Pipe to Tube (GAH20-1/4 NPT-V)
Adapter, Straight, Pipe to Tube (TCM20-1/2JIC-V)
Wrench, Combination, 1-1/4 in. (GGG-W-636)
Gage, Pressure, Dial Indicating (151469)
Hose Assembly, Nonmetallic (HFF20-060)
Pan, Drain, 4-gallon (MIL-P-45819)
Tee, Tube (203102-8-8S)
Engine turned off (TM 9-2320-279-10)
Tool Kit, General Mechanic's: Automotive
Parking brake applied (TM 9-2320-279-10)
Wheels chocked (TM 9-2320-279-10)
Does the hook arm
load when the
REASON FOR QUESTION
Other LHS functions OK.
During normal operation,
the directional control valve
spool is actuated by an
Directional control valve
electric solenoid. If the
Hook arm manifold
control valve will not oper-
ate. Operating the valve
manually determines if the
hydraulic portion of the
valve is operating correctly.
Go to Step 2.