Dealer Service Information Bulletin 68-I-75 – Wheel Balancing – Disc Brake Equipped Vehicles
Bulletin 68-I-75 — Pontiac Motor Division Dealer Service Information Bulletin, Section 10, dated May 31, 1968. Attention: Service Manager.
Subject: Wheel Balancing — Disc Brake Equipped Vehicles.
Short answer: Some dealers have had difficulty balancing front wheels on disc-brake-equipped vehicles using on-the-car balancers because the brake pads rub the disc and prevent the wheel from spinning fast enough. Two solutions are available: a two-motor balancer or the Kent-Moore tool J 22801 Disc Brake Pad Spacer.
There are two solutions for this condition:
- Balance equipment suppliers offer a two-motor balancer, which covers heavy-duty and disc brake applications.
- A special tool is available from Kent-Moore for balancing disc brake wheels. Tool J 22801 (Disc Brake Pad Spacer), price $4.90, is used to spread the brake pads away from the disc, greatly reducing the “dragging” tendency during the balancing operation.
Note: The wheel must be removed to install the spacers (see Fig. 1 in the scan below).
This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below, including the figures.
Content last modified: June 13, 2026 at 10:06 am
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