See Figures 1, 2, 3 and 4
- Disconnect the negative battery cable.
- Remove the air cleaner and/or the Thermactor® (air) pump to permit access to the distributor. If necessary, disconnect the Thermactor® air filter and lines as well. Tag the lines prior to removal.
- Remove the distributor cap, then position the cap and ignition wires to the side.
- Mark and tag any vacuum lines attached to the distributor. Also mark and tag any wire harness connectors. Once these parts are clearly marked, they may be unplugged or removed.
- Rotate the crankshaft until the No. 1 cylinder is at Top Dead Center (TDC) of the compression stroke.
- With No. 1 cylinder at TDC, the alignment marks on the crankshaft pulley and pointer should align correctly. Mark the location of the rotor in relation to the distributor body.
- Scribe or paint an alignment mark on the distributor body, and a similar mark on the engine block showing the position of the distributor body to the engine block. These marks are used for reference when installing the distributor.
- Remove the distributor hold-down bolt and clamp.
- Lift the distributor up and out until the shaft clears the mounting hole
Engine Not Rotated
- Rotate the distributor shaft so the blade on the rotor is pointing toward the paint mark on the distributor body base made during removal.
- Lower the distributor until the unit engages. If installed correctly, the rotor should be pointing at the No. 1 mark on the distributor base.
- Install the distributor retaining bolt. Tighten the bolt so the distributor can just be moved.
- Install the distributor cap and connect all wiring. Tighten the distributor cap to 18-23 inch lbs. (2-3 Nm), if retained with screws, or engage the clips to the cap.
- Start vehicle and set initial timing according to the procedures in Engine Electrical .
- After the timing has been set, tighten the distributor hold-down bolt to 17-25 ft. lbs. (23-34 Nm).
If the crankshaft was rotated while the distributor was removed, the engine must be brought to Top Dead Center (TDC) on the compression stroke of the No. 1 cylinder.
- Remove the No. 1 spark plug. Place a finger over the hole and rotate the crankshaft slowly in the direction of normal rotation, until engine compression is felt. When engine compression is felt at the spark plug hole (indicating that the piston is approaching TDC), continue to turn the crankshaft until the timing mark on the pulley is aligned with the pointer on the engine.
- Begin lowering the distributor into the mounting hole, making sure it is not binding on the side of the hole as it is lowered in.
- If the distributor is seated properly, the distributor base will be flush with the engine block base, and the rotor should be pointing at the No. 1 mark on the distributor base.
- Install the distributor hold-down bolt and tighten so the distributor can just be moved.
- Install the distributor cap and connect all wiring harnesses and vacuum lines. Tighten the distributor cap to 18-23 inch lbs. (2-3 Nm), if secured with screws, otherwise engage the clips to the cap.
- Start the vehicle and set the initial timing according to the procedures in Engine Electrical .
- After timing has been set, tighten the distributor hold-down bolt to 17-25 ft. lbs. (23-34 Nm).