EFFECTIVITY:
040-999
32-10-00 Jan10/90
PIPERAIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. Main Gear and Doors (continued)
15.Installationof Main Gear Door Assembly
(a)
Install the inboard gear door by aligning the hinge bracket holes with the bearings and installing andsecuring bolt assembly. Install the actuating cylinder rod to the door.
(b)
Install the outboard gear door by aligning the hinge bracket holes with the bearings and installingand securing bolt assemblies. Attach the actuating rods between the door and landinggearhousing.
16 Adjustment of Main Gear Doors
(a) Check that the main landing gear is properly adjusted.
CAUTION: DAMAGE TO THE DOOR CAN RESULT IF RODS ARE TOO SHORT.
(b)Adjustoutboard door rods to maximum lengthand bolt them to bosses on the gear housing. Retractgear and observe the amount of gap. Shorten rods by several turns of the rod ends andretract the gear again. Repeat until the door closed properly.
(c)Adjust the inboard door using same procedureused for the outboard door.
NOTE: If it is necessary to fit new doors or refit the present doors, maintain a gap of approximately0.062 of an inch except at the hinge side, between the door, and the skin surface of the wing. A gap of approximately 0.092 of an inch must be maintained at the hinge side of the door.
17.
Inspectionof Main Gear Door Assembly
Inspect the outboard or inboard doors for cracks or bent skin, loose hinge brackets, and worn or corrodedbearings.
18.
Cleaningof Main Gear Door Assembly
Clean all parts with a suitable cleaning solvent.
19.
Repair of Main Gear Door Assembly
Repair to door assemblies is limited to replacing hinge bearing, bracket or rivets, minor skin repairs, and painting.
EFFECTIVITY:
040-999
PAGE18 Jan10/90 3 0 0-00
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. Nose Gear and Doors
1. FaultIsolation-Nose Gear and Doors
NOTE: Place airplane on jacks before attempting fault isolation of landing gear system (refer to 7-1 0-00).
CHART 1 FAULT ISOLATION (NOSE LANDING GEAR AND DOORS) (Sheet 1 of 2)
Fault Cause Remedy
No green light on panel Gear not locked in down Adjust the gear.
whengear are down. position.
Nose gear shimmies Internalwear in shimmy Replace shimmy dampener.
during fast taxi, takeoff dampener.
and landing.
Shimmy dampener or Replace necessary parts and bolts.
bracket loose at mounting.
Tire out of balance. Check balance and replace tire
if necessary.
Worn or loose wheel Replace and/or adjust wheel
bearings. bearings. (refer to 32-40-00)
Worn torque link bolts Replace bolts and / or bushings.
and/orbushings. (refer to 32-40-00)
Strut bottoms on normal Insufficient air and / or fluid Service strut with air and / or fluid.
landingor when taxiing in strut.
over rough ground.
Defective internal parts Replace defective parts.
in strut.
Excessiveor uneven Incorrectoperatingpressure. Inflate tire to correct pressure.
wear on tire. (refer to 32-40-00)
Wheel out of alignment Check wheel alignment.
(toe-inor toe-out).
Doorscome open in Doorsare rigged too tight. Adjust rigging of doors.
flight.
Micro switch on power Adjust micro switch. (refer to
pack out of adjustment. 32-30-00)
Doors fail to close. Refer to 32-30-00 Chart 1 and
32-60-00 Chart 1.
EFFECTIVITY: 040-999
32-20-00Jan 10/90
PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL
A. NoseLandingGearandDoors (continued)
1. FaultIsolation-NoseGearand Doors (continued)
CHART 1
FAULTISOLATION(NOSELANDINGGEARAND DOORS) (Sheet2of 2)
Fault Cause Remedy
Nosegearfailsto steer properly. Oleocylinderbindingin strut housing. Lubricatestruthousing.
Onebrakedragging. Determinecauseand correct.
(referto 32-40-00)
Steeringarmrollersheared at top of strut. Replacedefective roller.
EFFECTIVITY:
040-999 JanJan10/9032-20-0010/90
PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL
A. NoseGearand Doors (continued)
2. Removalof NoseGear(referto 32-20-00 Figure401)
(a)Removerightandleftnosesectionsideaccesspanels.
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