K 1500 Truck 4WD V8-5.7L VIN R (1997)
Vacuum Brake Booster: Adjustments
Tool Required:
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Pushrod Height Gauge Tool No. J 37839, or equivalent.
Gauging The Piston Rod
1. Gage the piston rod using pushrod height gauge tool.
a. Gage the booster with 85 kPa (20 inches Hg) vacuum or maximum engine vacuum.
b. Check maximum and minimum rod lengths.
2. If the piston rod is not within limits, obtain a service adjustable piston rod and adjust the rod to the correct measurement.
