Chevrolet Blazer/Jimmy 1969-1982 Repair Guide

Power Steering Pump

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See for fluid level checking and drive belt tension adjustment.

REMOVAL & INSTALLATION





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Fig. Fig. 1 Power steering pump mounting-6 cylinder 250 engines



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Fig. Fig. 2 Loosen the pump adjusting bolt, then remove the retaining bolts



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Fig. Fig. 3 After the lines are disconnected, remove the pump from the vehicle

  1. Disconnect the hoses at the pump. When the hoses are disconnected, secure the ends in a raised position to prevent leakage. Cap the ends of the hoses to prevent the entrance of dirt.
  2.  
  3. Cap the pump fittings.
  4.  
  5. Loosen the bracket-to-pump mounting nuts.
  6.  
  7. Remove the pump drive belt.
  8.  
  9. Remove the bracket-to-pump bolts and remove the pump from the truck.
  10.  

To install:

  1. Installation is the reverse of removal. Fill the reservoir and bleed the pump by turning the pulley counterclockwise (as viewed from the front) until bubbles stop forming. Bleed the system. Adjust the belt tension.
  2.  

BLEEDING THE SYSTEM





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Fig. Fig. 4 When bleeding the power steering system, fill the reservoir to the proper level

  1. Fill the reservoir to the proper level and let the fluid remain undisturbed for at least 2 minutes.
  2.  
  3. Start the engine and run it for only about 2 seconds.
  4.  
  5. Add fluid as necessary.
  6.  
  7. Repeat Steps 1-3 until the level remains constant.
  8.  
  9. Raise the front of the vehicle so that the front wheels are off the ground. Set the parking brake and block both rear wheels front and rear. Manual transmissions should be in Neutral; automatic transmissions should be in Park.
  10.  
  11. Start the engine and run it at approximately 1,500 rpm.
  12.  
  13. Turn the wheels (off the ground) to the right and left, lightly contacting the stops.
  14.  
  15. Add fluid as necessary.
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  17. Lower the vehicle and turn the wheels right and left on the ground.
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  19. Check the level and refill as necessary.
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  21. If the fluid is extremely foamy, let the truck stand for a few minutes with the engine off and repeat the above procedure. Check the belt tension and check for a bent or loose pulley. The pulley should not wobble with the engine running.
  22.  
  23. Check that no hoses are contacting any parts of the truck, particularly sheet metal.
  24.  
  25. Check the level and refill as necessary. This step and the next are very important. When filling, follow Steps 1-10 above.
  26.  
  27. Check for air in the fluid. Aerated fluid appears milky. If air is present, repeat the above operations. If it is obvious that the pump will not respond to bleeding after several attempts, a pressure test may be required.
  28.  

 
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