GM: Electra/Park Avenue/Ninety-Eight 1990-1993

Filling and Bleeding

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SYSTEM FILLING



Do not allow the pump to run more than 60 seconds at 1 time. If the pump must run longer, allow the pump to cool several minutes between 60 second runs.

With the ignition off and the negative battery cable disconnected, discharge the pressure within the accumulator. Remove the cap from the reservoir; fill the reservoir to the correct level with dot 3 fluid.

Use only dot 3 brake fluid from a clean, sealed container. Use of dot 5 silicone fluid is not recommended. Internal damage to the pump components may result.

SYSTEM BLEEDING



Front and/or rear brake circuits should be bled using pressure bleeding equipment. The pressure bleeder must be of the diaphragm type and must have a rubber diaphragm between the air supply and brake fluid. If necessary, the front brakes may be bled manually; manual bleeding is not recommended for the rear brakes.

Front Brake Circuit

CAUTION
Do not move vehicle until a firm brake pedal is achieved. Failure to obtain firm brake pedal may result in personal injury and/or property damage

  1. With the ignition switch off , disconnect the negative battery cable.
  2.  
  3. Depressurize the accumulator.
  4.  
  5. Remove the reservoir cap or disconnect the wiring sensor from the fluid level sensor and remove the sensor.
  6.  
  7. Install the special tool No. J-35798 in place of the cap or sensor.
  8.  
  9. Attach the brake bleeder to the adapter tool No. J-35798 and charge to 20 psi (138 kPa).
  10.  
  11. Attach a bleeder hose to 1 front bleeder valve and submerge the other end in a container of clean brake fluid.
  12.  
  13. Open the bleeder valve.
  14.  
  15. Allow the fluid to flow from the bleeder until no air bubbles are seen in the brake fluid.
  16.  
  17. Close the bleeder valve.
  18.  
  19. Repeat Steps 4-7 on the other front bleeder valve.
  20.  
  21. Check the fluid level and adjust as necessary.
  22.  
  23. Remove the brake bleeding equipment and adapters, install the cap or sensor.
  24.  

Rear Brake Circuit

CAUTION
Do not move vehicle until a firm brake pedal is achieved. Failure to obtain firm brake pedal may result in personal injury and/or property damage

  1. With the ignition switch off , disconnect the negative battery cable.
  2.  
  3. Depressurize the accumulator.
  4.  
  5. Check the fluid level in the reservoir and fill as necessary.
  6.  
  7. Turn the ignition switch on and allow the system to charge. (Listen for the pump motor; it will stop when the system is charged.)
  8.  
  9. Attach a bleeder hose to 1 of the rear bleeder valves and submerge the other end in a container of clean brake fluid.
  10.  
  11. Open the bleeder valve.
  12.  
  13. With the ignition on , slightly depress the brake pedal for at least 10 seconds.
  14.  
  15. Allow the fluid to flow from the bleeder until no air bubbles are seen in the brake fluid. Repeat the Step above if necessary.
  16.  
  17. Close the bleeder valve.
  18.  
  19. Repeat Steps 2-6 on the other rear bleeder valve.
  20.  
  21. Depressurize the system. Inspect the reservoir fluid level and adjust as necessary.
  22.  

 
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