Ignition System - HEI: Overhaul: Disassembly
- Disconnect wiring harness from cap. Disconnect coil wire. Remove distributor cap and disconnect vacuum hose from vacuum advance unit. See Fig 1.
- Mark rotor-to-distributor housing position and distributor housing-to-engine position for reassembly reference. Remove hold-down bolt and remove distributor housing from engine.
- Remove rotor, two advance springs, weight retainer and advance weights. Mark distributor shaft and gear so they may be assembled in same position. Drive out roll pin from drive gear while supporting gear so no damage will occur to distributor shaft.
- Remove gear, shim and tanged washer from distributor shaft, and clean any burrs from shaft. Remove distributor shaft from housing.NOTE: DO NOT attempt to service shaft bushings in housing.
- Remove 2 attaching screws holding module to housing, and position module to disconnect pick-up coil and wiring harness connectors. Remove "C" washer from housing, and lift pick-up coil assembly from advance unit and distributor shaft.
- Remove 2 attaching screws, and remove vacuum advance mechanism. Disconnect capacitor lead, and remove attaching screw and capacitor. Remove wiring harness from position in distributor housing.
- For integral coils, remove 3 coil cover attaching screws and lift off cover. Remove 4 ignition coil attaching screws, disconnect coil leads, and remove coil from cap. Remove ignition coil arc seal.