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

Page: 594 / 1956

PAGE 2
Feb 28/07
3F2
27-60-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
2. Troubleshooting
See Chart 1, above.
3. Inspections
A. 50 Hour Inspection (See Figure 1.)
(1) Inspect Cap Strip Cover Screws and Top Attachment Screws for security. If loose, remove
screws and reinstall using Locktite 242. Torque to eight (8) in. lbs.
(2) Inspect drain tube for obstructions or debris.
B. Annual Inspection
(1) Remove SpeedBrake Cartridge as described under SpeedBrake Cartridges, Removal, below.
(2) Clean and inspect unit for damage, corrosion, looseness, and proper operation.
(3) Lubricate worm and worm gear with Aeroshell 22.
(4) Reinstall SpeedBrake Cartridge as described under SpeedBrake Cartridges, Installation,
below.
4. SpeedBrake Cartridges
WARNING: DO NOT PUT FINGERS IN HOLES OF EXTENDED SPEEDBRAKE BLADES. IF POWER
TO THE SYSTEM IS INTERRUPTED, THE SPEEDBRAKE BLADES WILL CLOSE WITH
SUFFICIENT FORCE TO AMPUTATE FINGERS.
CAUTION: DO NOT PUSH SPEEDBRAKE BLADES DOWN, IF THEY FAIL TO RETRACT. FORCING
SPEEDBRAKE BLADES DOWN WILL DAMAGE THE UNIT.
The SpeedBrake Cartridges (which are in each wing between W.S. 93.00 and 107.50) consist of a
gearmotor and clutch assembly driving the interconnected blades through a worm gear set. The blades
are loaded to the retracted position by a constant force spring.
The SpeedBrake cartridge also contains two microswitches; one for the retracted position and one for
the extended position. The microswitches control gearmotor power, gearmotor direction, signals the
cockpit annunciator and signals the logic-switching unit.
A. Removal
(1) Remove access plates and covers.
NOTE: If installed, the radome on the right wing will need to be removed first.
(2) Disconnect wiring harness.
(3) Pull the drain tube up through the wing skin.
(4) Remove the spring clip on each side of the SpeedBrake cartridge and remove the cartridge.
B. Installation
(1) Insert the SpeedBrake cartridge through the access hole ensuing that the spring clip hinge
halves are on the aft side of the cartridge.
(2) Position the cartridge aligned with and between the spring clip hinge halves on the mounting
brackets. Secure with spring clips.
(3) Feed the drain tube through the wing skin.
(4) Connect the wiring harness.
(5) Reinstall access plates and covers.
NOTE: If required, reinstall the radome on the right wing.