Removal Of Main Gear Door Assembly; Cleaning, Inspection And Repair Of Main Gear Door Assembly; Installation Of Main Gear Door Assembly - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
NOTE
A carpenter's square, because of its especially long legs, is
recommended for checking main landing gear wheel alignment.
c.
If a gap appears at the rear, between the block and square, the wheel is toed-out and must be
realigned. If a gap appears at the forward end between the block and square, the wheel has too much toe-in
and must be realigned to get .5 degree toe-in.
d.
To rectify toe-in or toe-out condition, remove bolt connecting upper and lower torque links and
remove or add spacer washers to move the wheel in desired direction.
e.
Recheck the wheel alignment. If the wheel alignment is correct, safety the castellated nut with a
cotter pin. If the misalignment still exists, separate the torque links and add or remove a spacer washer.
Limit the number of spacers installed to allow for installation of the cotter pin in the bolt.
7-26. REMOVAL OF MAIN GEAR DOOR ASSEMBLY.
a. To remove the outboard gear door, disconnect the retraction rods from the door and remove the
hinge bolts.
b. To remove the inboard gear door, place the airplane on jacks and retract the gear enough to allow
the door to open. Disconnect the actuating cylinder rod and remove hinge bolts.
7-27. CLEANING, INSPECTION AND REPAIR OF MAIN GEAR DOOR ASSEMBLY.
a. Clean all parts with a suitable cleaning solvent.
b. Inspect the outboard or inboard doors for cracks or bent skin. Loose hinge brackets and worn or
corroded bearings.
c. Repair to the door assemblies is limited to replacing hinge bearing, brackets or rivets, minor skin
repairs and painting.
7-28. INSTALLATION OF MAIN GEAR DOOR ASSEMBLY.
a. The inboard gear door is installed by aligning the hinge bracket holes with the bearings, installing
bolt assembly and securing. Install the actuating cylinder rod to the door.
b. The outboard gear door is installed by aligning the hinge bracket holes with the bearings,
installing bolt assemblies and securing. Attach the actuating rods between the door and landing gear
housing.
Reissued: 10/12/79
LANDING GEAR AND BRAKE SYSTEM
2F13