GM Full Size Vans 1987-1997 Repair Guide

Vacuum Booster

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REMOVAL & INSTALLATION



See Figure 1

  1. Unbolt the master cylinder from the booster and pull it off the studs, CAREFULLY! It is not necessary to disconnect the brake lines.
  2.  
  3. Disconnect the vacuum hose from the check valve.
  4.  
  5. Disconnect the booster pushrod at the brake pedal.
  6.  
  7. If necessary, unfasten the power brake booster nuts from the brake pedal b racket.
  8.  
  9. Remove the booster mounting nuts, located on the inside of the firewall.
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Vacuum booster mounting

  1. Lift off the booster.
  2.  

To install:
  1. To install the booster with a new gasket.
  2.  
  3. Tighten the booster mounting nuts to 22 ft. lbs. (30 Nm) on 1987-95 models or 27 ft. lbs. (36 Nm) on1996-97 models.
  4.  
  5. Install the master cylinder and bleed the system.
  6.  

 
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