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