TM 55-1520-240-T15-4.7 APU HYDRAULIC STARTING SYSTEM VISUAL CHECK15-4.7INITIAL SETUPApplicable Configurations:AllTools:Aircraft Mechanic’s Tool Kit,NSN 5180-00-323-4692Materials:NonePersonnel Required:Medium Helicopter RepairerReferences:TM 55-1520-240-23Equipment Condition:TM 55-1520-240-23:Electrical Power OffBattery DisconnectedHydraulic Power OffRight Aft TransmissionBaffle OpenCargo Ramp Operational Level(Task 7-3.4)TASKRESULT1. Check APU start module accumulatorIf accumulator (1) or accumulator gage(l).(2) is damaged, replace accumulator.2. Check APU start module (3).If any tube to module (3) is loose ordamaged, tighten or replace it asrequired. If electrical connector tomodule is loose or damaged, tighten orreplace it as required. If wiring toconnector is damaged, repair or replaceit as required.3. Check APU start accumulator gageIf gage (4) is loose or damaged, tighten(4).or replace it as required.4. Check APU start accumulator (5).If accumulator (5) is loose or damaged,tighten or replace it as required. If anytube to accumulator is loose or damaged,tighten or replace it as required.5. Check APU motor pump (6).If pump (6) is loose or damaged, tightenor replace it as required. If any hose topump is loose or damaged, tighten orreplace it as required.FOLLOW-ON MAINTENANCE:NoneEND OF TASKChange 815-75
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
