gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Hydraulic Brake Booster|Service and Repair > < Symptom Related Diagnostic Procedures|Page 9181
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Hydraulic Brake Booster: Adjustments

Tool Required:

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J 37839 Push Rod Height Gage, or equivalent

Gaging The Push Rod

1. Gage the piston rod using push rod height gauge tool No. J 37839, or equivalent.

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Check the maximum and minimum rod length.

2. If the piston rod is not within limits, obtain a service adjustable piston rod and adjust the rod to the correct measurement.

Hydraulic Brake Booster|Service and Repair > < Symptom Related Diagnostic Procedures|Page 9181