GM Prizm/Nova 1985-1993 Repair Guide

Power Brake Booster(Vacuum Booster)

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REMOVAL & INSTALLATION



See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. On Prizm vehicles, remove the top of the air cleaner and the intake duct. Remove the charcoal canister mounting nuts.
  4.  
  5. Remove the brake master cylinder from the booster.
  6.  
  7. Remove the vacuum hose from the booster.
  8.  
  9. Inside the car, disconnect the pedal return spring. Disconnect the clip and the clevis pin.
  10.  



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Fig. Fig. 1: Power booster removal - 1989-92 models shown, other models similar

  1. Remove the brake booster retaining nuts. It will be helpful to have a helper support the booster while the nuts are loosened.
  2.  
  3. Remove the booster from the engine compartment.
  4.  
  5. When reinstalling, have a helper hold the booster in position while you install the retaining nuts. Tighten the nuts to 9.5 ft. lbs. (115 inch lbs.)
  6.  
  7. Install the clevis pin and clip, then install the pedal return spring.
  8.  
  9. Connect the vacuum hose to the booster.
  10.  
  11. Install the master cylinder onto the booster and tighten the nuts to 9.5 ft. lbs. (115 inch lbs.)
  12.  
  13. On Prizm vehicles, install the charcoal canister mounting bolts and install the air cleaner top and intake duct.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Bleed the brake system.
  18.  

 
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