TM 55-1510-221-MTFi.Defective landing gear control switch.j.Defective wiring.C14. Landing gear fails toretract.a.Safety switch not closing.b.Pressure switch not closing.c.Gear selector valve stuck.d.Circuit is open between the selector valveand the power relay.e.Time delay circuit opening prematurely.f.Hand pump handle improperly stowed.g.Service valve in up position.h.Defective control switch.C15. Landing gear fails to extend.a.Service valve switches faultyb.Landing gear selector valve stuck in up posi-tion.c.Control switch not providing power to theextend side of selector valve.d.Defective limit switch.e.Defective control switch.C16. Landing gear pump motor continues to run after the gear isretracted, causing the circuit breaker to trip.a.Pressure switch not opening on high pres-sure.b.Low accumulator chargec.Excessive fluid leakage past the piston sealsin the actuatorsd.Defective valve in the power packC17. Landing gear pump motor continues to run after the gear areextended, causing the circuitbreaker to trip.3-9
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business