GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide

Pump Motor

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Depressurize the accumulator.
  4.  
  5. Remove the fluid from the reservoir.
  6.  


WARNING
Do not remove brake fluid from the reservoir using a syringe or other instrument which is contaminated with water, petroleum based fluids or any other foreign material. Contamination of the brake fluid may result.

  1. Unplug the electrical connector from the pressure switch and the pump motor.
  2.  
  3. Remove the hydraulic accumulator and O-ring.
  4.  
  5. Disconnect the high pressure hose fitting connected to the pump.
  6.  
  7. Remove the pressure hose assembly and O-rings from the pump.
  8.  
  9. Disconnect the wire clip, then pull the return hose fitting out of the pump body.
  10.  
  11. Remove the pump mounting bolt and grommets attaching the pump motor assembly to the hydraulic unit.
  12.  
  13. Remove the pump motor assembly by sliding it off of the locating pin.
  14.  

Replace the insulators if damaged or deteriorated.

To install:
  1. Position the pump motor assembly to the hydraulic unit.
  2.  
  3. Install the bolt attaching the pump motor assembly to the hydraulic unit, tighten to 71 inch lbs. (8 Nm).
  4.  
  5. Connect the return pressure hose to the pump. Push the return hose fitting into the pump body.
  6.  
  7. Install the wire clip to the return hose fitting.
  8.  
  9. Install the O-rings and the pressure hose to the pump, attach the hose bolt to the pump. Tighten the bolt to 15 ft. lbs. (20 Nm).
  10.  
  11. Install the O-ring and the hydraulic accumulator, tighten the accumulator to 17 ft. lbs. (23 Nm).
  12.  
  13. Engage the electrical connector to the pressure switch and the pump motor.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Refill the fluid reservoir with clean brake fluid.
  18.  

 
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