REMOVAL & INSTALLATION
- Remove the air cleaner on V8 engines.
- On 4-cylinder and 6-cylinder inline engines, remove one thermactor pump mounting bolt and the drive belt, then swing the pump to one side to allow access to the distributor. If necessary disconnect the thermactor air filter and lines.
- Detach the distributor wiring connector from the vehicle wiring harness.
- Disconnect the vacuum lines from the distributor.
- Remove the distributor cap and wires and lay to one side. Remove the rotor and adapter, then reinstall the rotor.
- Scribe a mark on the distributor body and the cylinder block indicating the position of the rotor in the distributor and the distributor in the block. These marks will be used as guides during installation of the distributor.
- Remove the distributor hold-down bolt and clamp, then lift the distributor out of the block.
Do not rotate the engine while the distributor is out of the block, or it will be necessary to time the engine.
- If the engine was cranked (disturbed) with the distributor removed, it will now be necessary to retime the engine. If the distributor has been installed incorrectly and the engine will not start, remove the distributor from the engine and start over again. Hold the distributor close to the engine and install the cap on the distributor in its normal position. Locate the No. 1 spark plug tower on the distributor cap. Scribe a mark on the body of the distributor directly below the No. 1 spark plug wire tower on the distributor cap. Remove the distributor cap from the distributor and move the distributor and cap to one side. Remove the No. 1 spark plug and crank the engine over until the No. 1 cylinder is on its compression stroke. To accomplish this, place a wrench on the lower engine pulley and turn the engine slowly in a clockwise (4- & 6-cylinder) or counterclockwise (8-cylinder) direction until the TDC mark on the crankshaft damper aligns with the timing pointer. If you place your finger in the No. 1 spark plug hole, you will feel air escaping as the piston rises in the combustion chamber. One of the armature segments must be aligned with the stator as shown in the accompanying illustration to install the distributor. Make sure that the oil pump intermediate shaft properly engages the distributor shaft. It may be necessary to turn the engine after the distributor drive gear is partially engaged, in order to engage the oil pump intermediate shaft. Install, but do not tighten the retaining clamp and bolt. Rotate the distributor to advance the timing to a point where the armature tooth is aligned properly. Tighten the clamp.
- If the engine was not cranked (disturbed) when the distributor was removed, position the distributor in the block with the rotor aligned with the mark previously scribed on the distributor body and the marks on the distributor body and cylinder block in alignment. Install the distributor hold-down bolt and clamp finger-tight.
- Install the vacuum hoses and connect the ignition wire to the wiring harness.
- Install the rotor adapter and distributor cap.
- Install the thermactor pump and belt on 4 and 6-cylinder engines. Adjust the belt tension so that there is a 1 / 4 inch deflection at its longest point.
- Connect the thermactor hoses and the filter.
- Install the air cleaner if removed and check the ignition timing.