TM 9-2350-256-20
CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTlONS
2-17 HYDRAULIC TROUBLESHOOTING-Continued
HOIST WINCH-Continued
Do not attempt
to loosen or tighten
hydraulic fittings or lines when system is
pressurized. Severe injury or death to
personnel may result.
C Inspect for any damaged or restricted hoses.
Replace hoses as necessary (see paragraph 12-1). If
no damaged or restricted hoses exist, go to step D.
D Test for hydraulic motor failure. Remove hose No.
48 from rear of hydraulic motor (see paragraph
12-1). A large volume of oil discharged from port
when hoist winch control valve is engaged indicates
a faulty motor. If a faulty hydraulic motor exists,
notify Direct Support maintenance.
If hydraulic
motor is not faulty, go to step E.
E Inspect manual control and linkage (see paragraph
11-8) for disconnected, damaged, or missing parts.
Connect linkage and replace or repair missing or
damaged parts (see paragraph 11-8). If no control
and linkage defects exist, go to step F.
F Ensure hoist winch cable is not damaged and is
properly attached to drum. Replace hoist winch
cable if required (see paragraph 11-6). If hoist winch
cable is not damaged and is properly. attached to
drum, go to step G.
Do not attempt to loosen or tighten
hydraulic fittings or lines when system is
pressurized. Severe injury or death to
personnel may result.
G Inspect hydraulic lines and connections for leaks.
Replace leaking hydraulic lines and tighten leaking
connections (see paragraph 12-1). If leaks persist,
notify Direct Support Maintenance. If no leaks exist
go to step H.
NOTE
Ensure hydraulic system is at operating
temperature.
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