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

Page: 819 / 1956

PAGE 13
Feb 28/07 4E13
32-30-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(12) Set BATT MASTER switch to the ON position. Cycle landing gear up and down at least three
(3) times. Watch that the gear operates smoothly and check that there are no hydraulic leaks.
(13) Service reservoir as required.
(14) Remove airplane from jacks (see 7-10-00).
4. Main Gear Actuator Assembly
NOTE: No field repair of landing gear actuators installed in PA-46-350P airplanes is authorized.
Actuator overhaul service is available through Piper distributors.
A. Removal
(1) Place airplane on jacks per 7-10-00.
(2) Reduce hydraulic pressure as follows:
(a) Place gear control in the UP position.
(b) Allow gear to retract approximately halfway and pull Hydraulic Pump circuit breaker.
NOTE: Have assistants standing by each main gear to catch the gear and prevent them
from falling back to a down and locked position. Block each main gear to hold that
position.
(c) Set BATT MASTER switch to the OFF position.
(3) Disconnect and quickly cap hydraulic lines at main gear actuator.
(4) Disconnect actuator from landing gear trunnion by removing washer, bushing, and bolt.
(5) Disconnect upper end of actuator from its mounting bracket by removing bolt and washer.
(6) Remove actuator from airplane.
(7) Remove rod end bearing from actuator rod. Check that rod end bearing lock nut is free of
scoring and nicks. Smooth out if necessary.
(8) Move landing gear selector to the DOWN position.
(9) Manually extend rod so that actuator assembly locks in down, or fully extended position.
B. Installation
NOTE: In S/N’s 4636001 thru 4636195 only , when installing service replacement actuators P/N
89075-015 (RH) or P/N 89075-016 (LH) for the first time, modify the associated original
equipment main gear trunnion per Trunnion Modification, below.
(1) Install rod end bearing on actuator rod.
(2) Bolt upper end of actuator to its mounting bracket. Torque to 210 -270 in.-lbs. Safety the bolt.
(3) Position gear in order to bolt rod end bearing to main gear trunnion. Torque to 260 -320 in.-lbs.
Safety the bolt.
(4) Check adjustment of rod end bearing per 32-10-00, Main Gear Assembly, Adjustment.
(5) Tighten rod end bearing locknut.
(6) Uncap and connect hydraulic lines.
(7) Purge system of air per Bleeding Hydraulic System, 29-10-00.
(8) Check that hydraulic pump circuit breaker is set (pressed in), gear control switch is in the
DOWN position and BATT MASTER switch is OFF.
(9) Remove airplane from jacks (see 7-10-00).