Push Rod Adjustment

NOTE: This adjustment applies to Chevrolet and GMC only. Jeep push rod is not adjustable.

Place power unit in padded vise with front housing up. Do not clamp tight. Insert master cylinder push rod, flat end first, into retainer. Ensure rod is properly seated. Remove front housing seal to assure no vacuum is in unit.
Place gauge (J-22647) over push rod so it can be moved right or left without contacting studs. Push rod should contact longer section of gauge. Rod is non-adjustable, and if out of limits, must be replaced with adjustable service rod. With service rod, adjust self-locking screw to meet gauging specifications.

Fig 1: Adjusting Push Rod With Special Gauge
Courtesy of GENERAL MOTORS COMPANY

Chevrolet and GMC models only.