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

Page: 783 / 1956

PAGE 3
Feb 28/07
4D1
32-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(4) Disconnect brake line at the joint located in the wheel well. Disconnect brake line retaining
clamp that attaches the brake line to the upper part of the strut housing.
(5) To remove the piston tube assembly from the oleo housing, remove the bolt that connects the
upper and lower torque link. Note the number and thickness of spacer washer(s) between the
two links.
(6) Compress the piston tube. Reach up into the lower end of the oleo housing and release the
snap ring from the annular slot at the bottom of the oleo housing.
(7) Pull the piston tube with its component parts from the cylinder housing.
(8) The piston tube components may be removed by removing the retainer ring from the top of the
piston tube. Slide the bearing assembly (with its inner O-ring and ring), wiper strip and washer
over the top of the piston tube.
(9) To remove the piston tube plug, located at the bottom of the piston tube assembly, remove the
bolt and insert a rod into the hole in the bottom of the fork and push the plug out of the top of
the piston tube.
(10) To remove the orifice tube, remove the orifice tube locknut, washer, lock washer and roll pin
from the top of the orifice tube (at the top of the trunnion). Slide the orifice tube from the
trunnion.
(11) The orifice tube plug may be removed by removing the snap ring from the slot at the bottom of
the orifice tube.
B. Assembly
(1) Determine that all parts are cleaned and inspected.
(2) To install the piston tube plug, first lubricate the plug O-ring with hydraulic fluid and install it on
the plug. Lubricate the inside wall of the piston tube. Insert the plug into the top of the piston
tube and push it down the tube. Align the bolt holes of the fork, tube and plug. Then install the
bolt assembly.
(3) If desired, cement a cork in the hole in the bottom of the fork body to prevent dirt from entering
between the fork and tube.
(4) To assemble components of orifice tube, insert the orifice plate into the bottom of the tube and
secure it with the snap ring. Install piston tube ring in slot on outer diameter of lower section of
orifice tube.
(5) To install the orifice tube in the oleo housing, install upper O-ring on orifice tube and insert the
tube up through the housing. With the end of the tube exposed through the top of the housing,
install the washer, lock washer, roll pin and locknut. Tighten the locknut only finger tight at this
time.
(6) Assemble components of piston tube on the tube by installing in order, snap ring, washer,
wiper ring, bearing assembly (with outer O-ring and inner O-ring/ring) and retainer ring.
(7) Lubricate the wall of the cylinder oleo housing and piston tube. Carefully insert the piston tube
assembly into the housing, guiding the orifice tube into the piston tube. Slide the washer and
wiper strip into position and secure the assembly with the snap ring in the lower part of the
trunnion.
(8) Torque the locknut at the top of the orifice tube from 530 to 550 inch-pounds.
(9) Ensure that the bushings are installed in the torque links. Bolt the links together making sure
that there is the same thickness of spacer washers between the links as previously removed
(to maintain wheel alignment). Tighten the bolt tight enough to allow no side play in the links
but still be free enough to rotate.
(10) Connect brake line and bleed brakes.