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

Page: 1418 / 1956

PAGE 10
Feb 28/07
7F20
74-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
E. Assembly
NOTE: The following parts MUST BE REPLACED at engine overhaul (refer to Slick Service
Bulletin No. SB-2-80C). Condenser, drive end bearing, bearing cap assembly, impulse
coupling, coil, rotor gear, oil seal, contact point kit and distributor block and gear assembly.
Refer to Slick Part List for part numbers. At each 500 hour inspection replace parts that are
worn or damaged.
(1) Assemble new bearings onto shaft (see Figure 6).
(a) Insert the base plate (T-117) and adapter plate bushing (T-119) into T-125 assembly
fixture.
(b) Place one drive-end bearing and one bearing cap assembly onto the rotor shaft.
(c) Insert the rotor shaft into the adapter plate bushing (threaded end down).
(d) Place the bearing assembly plug (T-101) onto the exposed end of the rotor shaft.
(e) Turn T-handle screw to seat the bearings against the bearing shoulders on the rotor shaft.
(f) Remove the rotor shaft, adapter bushing, adapter plate and bearing assembly plug from T-125
assembly fixture.
(2) Install rotor shaft assembly (see Figure 6).
(a) Place magneto frame in T-125 assembly fixture (flange down).
(b) Position rotor shaft assembly in the magneto frame.
(c) Insert rotor and frame assembly plug (T-102) into the T-handle.
(d) Turn T-handle until the bearing cap bottoms in the frame. Place cap over end of rotorshaft
first.
(e) Place T-151 cam and rotor set onto the end of the rotor shaft and turn T-handle until the
shaft bottoms in magneto frame.
(f) Install bearing clamps and the hold-down screws.
(g) Torque screws to 20-24 in-lbs.
(3) Install oil seal (see Figure 7).
(a) Lubricate oil seal with engine oil.
(b) Reverse the magneto on the T-125 assembly fixture so the flange is facing up.
(c) Insert the oil seal over the rotor shaft.
(d) Press the oil seal flush into the frame using the oil seal assembly plug (T-103) and the
T-handle screw.
(4) Install Woodruff key by pressing woodruff key into the key slot of the rotor shaft.
(5) Install coil.
(a) Place the frame on the T-125 assembly fixture. Insert the coil into the frame, being sure
that it is back against the stops. Insert coil wedges between the bridge and the frame.
(b) Drive the two wedges tight, using a hammer and flat punch. Attach the ground wire coil
(either black or white - depending on coil type) to the frame with a screw. Torque to 20 in-lbs.
CAUTION: IF THE HIGH TENSION LEAD PROTRUDES ABOVE THE MAGNETO
FRAME, IT CAN MAKE DIRECT CONTACT WITH THE DISTRIBUTOR
GEAR AND CAUSE THE MAGNETO TO MALFUNCTION.
(c) Position the coil high tension lead flush to 1/32 (.031) inch below the parting surface of the
magneto frame.