General Motors — Distributor Overhaul - Disassembly
Repair & overhaul · HVS Distributor
From a General Motors service manual — check it applies to your exact model before use.
Before you start
- Refer to Safety Glasses Caution when using a punch
Procedure
- Remove the two screws that hold the distributor cap to the housing; do not discard
- Remove the distributor cap from the housing
- Align white paint mark on the bottom stem of the distributor with the pre-drilled indent hole in the bottom of the gear
- Verify rotor segment position for a V8 engine; if not, replace the distributor
- Remove the two screws from the rotor and remove the rotor
- Note the locating holes the rotor was removed from
- Remove the two screws that hold the camshaft position (CMP) sensor; do not discard
- Line up the square-cut hole in the vane wheel with the CMP sensor and remove the CMP sensor
- Support the distributor drive gear in a V-block
- Drive out the roll pin with a suitable punch
- Remove the driven gear, round washer, tang washer and round washer from the distributor shaft
- Remove the old oil seal
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.