Ignition Exciter - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

2.

Ignition Exciter

The ignition exciter is located on a bracket mounted to the left upper engine mount tube at FS 73.00. The
unit is non-serviceable other than cleaning, and must be replaced if defective. Observe all safety
precautions when handling this unit.
WARNING: RESIDUAL VOLTAGE IN THE EXCITER CAN BE VERY HIGH. ENSURE IGNITION IS OFF
AND SYSTEM IS INOPERATIVE FOR AT LEAST SIX MINUTES BEFORE REMOVING
COMPONENTS. ALWAYS USE INSULATED TOOLS AND REMOVE COUPLING NUTS AT
EXCITER END FIRST. DO NOT TOUCH OUTPUT CONNECTORS OR COUPLING NUTS
WITH BARE HANDS.
A. Removal
(1) Remove forward upper cowling and open left engine access gull-wing door.
(2) Remove power from ignition system.
(3) Disconnect power supply cable from exciter box input connector.
CAUTION: DO NOT ALLOW IGNITION CABLE BRAIDING OR FERRULES TO ROTATE
(4) Disconnect two ignition cable couplings from output connectors on exciter.
(5) Remove four bolts, washers, and self-locking nuts securing unit to bracket.
(6) Remove ignition exciter unit.
B. Installation
(1) Install ignition exciter unit to bracket with four bolts, washers, and nuts.
(2) Connect coupling nuts of supply cable and two ignition cables to proper connectors on exciter.
CAUTION: DO NOT ALLOW IGNITION CABLE BRAIDING OR FERRULES TO ROTATE
(3) Tighten coupling nuts finger tight, plus 45 degrees; safety with lockwire.
(4) Replace forward upper cowling and close left engine access gull-wing door.
74-10-00
PAGE 2
Apr 15/07
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
WHEN REMOVING COUPLING NUTS.
WHEN SCREWING ON COUPLING NUTS.
7G10