Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 787 / 1956

PAGE 7
Feb 28/07
4D5
32-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
D. Adjustment
(1) Place the airplane on jacks.
(2) Level the airplane laterally and longitudinally (refer to Leveling, 8-20-00).
(3) Disconnect gear door actuating rod from the strut housing by removing the rod attachment
bolt. Secure the door out of the way.
(4) Disconnect the locking actuator from the strut housing.
(5) Adjust the locking actuator to a nominal length of 24.08 inches with no load on the wheel.
Attach locking actuator to strut housing.
(6) Using the hydraulic pump, retract landing gear into wing well.
NOTE: This will require approximately 60 psi of pressure on the rod end part of the actuator
to unlock the cylinder and allow the cylinder to retract.
(7) Adjust the locking cylinder rod end so that the fork is lightly contacting the rubber pad when the
actuator is fully retracted.
(8) Inspect for adequate engagement of the rod end into the locking cylinder and tighten the check
nut.
(9) If the down lock limit switch is properly adjusted, retract and extend the gear hydro-electrically
to ascertain that the gear operates properly.
E. Alignment (See Chart 2 and Figure 3.)
(1) Place a straightedge no less than twelve feet long across the front of both main landing gear
wheels. Butt the straightedge against the tire at the hub level of the landing gear wheels. Jack
the airplane up just high enough to obtain a six and one-half inch dimension between the
centerline of the strut piston and the centerline of the center pivot bolt of the gear torque links.
Devise a support to hold the straightedge in this position.
(2) Set a square against the straightedge and check to see if its outstanding leg bears on the front
and rear side of the brake disc. (It may be necessary to remove the brake assembly to have
clear access to the disc.) If it touches both forward and rear flanges, the landing gear is
correctly aligned. The alignment for the main landing gear wheels is 0° 15' ± 5'.
NOTE: A carpenter’s square, because of its especially long legs, is recommended for
checking main landing gear wheel alignment.
(3) If the square contacts the rear side of the disc, leaving a gap between it and the front flange,
the wheel is toed-out. If a gap appears at the rear flange, the wheel is toed-in.
(4) To rectify the toe-in and toe-out condition, remove the bolt connecting the upper and lower
torque links and remove or add spacer washers to move the wheel in the desired direction.
See Chart 2.
(5) Should a condition exist that all spacer washers have been removed and it is still necessary to
move the wheel further in or out, then it will be necessary to turn the torque link assembly over.
This will put the link connecting point on the opposite side allowing the use of spacers to go in
the same direction.
(6) Recheck wheel alignment. If the alignment is correct, safety the castellated nut with cotter pin.
(7) If a new link on the top left main gear had to be installed or it had to be reversed during the
alignment check, it will be necessary to check the gear safety switch (squat switch) bracket for
engagement and locking in place.
(8) Check adjustment of landing gear safety switch (squat switch).
4. Main Gear Tolerances
See Figure 4.