SECTION V: TROUBLESHOOTlNG
TM 9-2350-256-20
away from user and other personnel in
the area.
compressed air used for
cleaning purposes will not exceed 30 psi
(207 kPa). Use only with effective chip-
guarding
and personal protective
equipment (goggle/shield and gloves).
F Remove center rear floor plate (see paragraph 9-18).
Remove eight socket head screws and remove
hydraulic oil filter cover and oil filter element (see
paragraph 12-3). clean hydraulic oil filter element in
dry-cleaning solvent and dry with compressed air.
Replace filter element and cover. If problem persists
notify Direct Support Maintenance.
AUXILIARY HYDRAULIC PUMP
SYMPTOM
Auxiliary hydraulic pump does not operate.
Do steps A through D.
A Ensure SYSTEM SELECTOR CONTROL lever is in
the AUXILIARY or REFUEL position (not MAIN
position) as appropriate. If problem persists, go to
step B.
B Ensure APU emergency winch control valve lever is
in the AUXILIARY POWER UNIT OPERATION
(open) position. If problem persists, go to step C.
C Ensure power control lever is in the OFF position. If
problem persists, go to step D.
Do not attempt to loosen or tighten
hydraulic fittings or lines when system is
pressurized. Severe injury or death to
personnel may result.
D Inspect all hydraulic hoses and connections for
visible indication of leaks or damage.
Replace
hydraulic hoses and tighten fittings as necessary (see
paragraph 12-1). If problem persists, notify Direct
Support Maintenance.
2 - 5 5
