General Motors — Distributor Overhaul - Assembly
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 and hammer
Procedure
- Line up the square-cut hole in the vane wheel for the CMP sensor
- Insert the sensor into the housing and install two CMP sensor screws; tighten to 2.2 N·m (20 lb in)
- Identify the correct rotor mounting position and install the distributor rotor according to the index marks
- Install two rotor hold down screws; tighten to 1.9 N·m (17 lb in)
- Install the round washer, tang washer over the bottom of the distributor shaft, and round washer
- Install the driven gear according to the index marks and align white paint mark with the pre-drilled indent hole
- Verify the dimple is approximately 180 degrees opposite the rotor segment if the gear is installed incorrectly
- Support the distributor drive gear in a V-block
- Install the roll pin with a suitable punch and hammer to hold the driven gear in the correct position
- Install the distributor cap and two NEW distributor cap screws; tighten to 2.4 N·m (21 lb in)
- Install the new oil seal under the mounting flange of the distributor base
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- CMP sensor screws: 2.2 N·m (20 lb in)
- Rotor hold down screws: 1.9 N·m (17 lb in)
- Distributor cap screws: 2.4 N·m (21 lb in)
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.