SECTION V: TROUBLESHOOTlNG
TM 9-2350-256-20
transmission clutch operating pressure should be
140-225 psi (965-1551 kPa). If clutch pressure is
140-225 psi (965-1551 kPa), go to step F. If clutch
pressure is not 140-325 psi (965-1551 kPa), notify
Direct Support Maintenance.
F Inspect hydraulic lines and connections for damage
and leaks. Replace hydraulic lines and connections
that show signs of damage. Tighten connections
that leak. If leaks persist, notify Direct Support
Maintenance.
G Inspect hydraulic components (valves, pumps,
cylinders, etc.) for leaks at gaskets and/or seals.
Tighten loose covers, plates, and housings. If leaks
persist, notify Direct Support Maintenance.
AUXILIARY HYDRAULIC SYSTEM
SYMPTOMS
Main and hoist winches fail to
operate.
Do step A.
Insufficient or no auxiliary
Loss of auxiliary hydraulic
system oil pressure.
Do step A.
pressure during operation.
Do steps B and C.
A Check auxiliary power unit emergency winch
control valve to see if it is in AUXILIARY POWER
UNIT OPERATION (open) position. If valve is not
in correct position, place in open position.
Do not attempt to loosen or tighten
hydraulic fittings or lines when system is
pressurized. Severe injury or death to
personnel may result.
B Inspect hydraulic lines and connections for damage
and leaks. Tighten connections that leak. If leaks
persist, notify Direct Support Maintenance.
C Inspect hydraulic components valves, pumps,
cylinders, etc.) for leaks at gaskets and/or seals.
Tighten loose covers, plates, or housings. Ii leaks
persist, notify Direct Support Maintenance.
2-51