Question about 1990 GMC Safari

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Replace power steering pump

How do i replace power steering pump on my 1990 gmc safari?

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NOTE: The following procedure requires the use of the GM Puller tool No. J–29785–A (1985–92), Puller J–25034–B (1993–96) or equivalent, and the GM Pulley Installer tool No. J–25033–B or equivalent.

  1. Disconnect the negative battery cable for safety.
  2. For 1996 vehicles, remove the air cleaner assembly for access.
  3. For 1993–96 vehicles, remove the hood latch and the upper fan shroud.
  4. Release tension and remove the drive belt. For details, please refer to Section 1 of this manual.
  5. Remove the power steering pump pulley using a suitable puller tool.
  6. Remove the power steering pump retaining bolts, then reposition the pump as necessary for access to the hoses.
  7. Position a fluid catch pan under the power steering pump.
  8. Remove the hoses from the power steering pump and drain the excess fluid into the catch pan.
  9. WARNING
    Be sure to cap all openings in the pump hydraulic system to prevent excessive fluid spillage and the possibility of system contamination.
  10. Remove the power steering pump from the vehicle. To install:
  11. Position the pump to the vehicle, then uncap and connect the pump hoses.
  12. Install the steering pump to the retaining bracket, then secure using the retaining bolts. Tighten the power steering pump-to-bracket bolts to 37 ft. lbs. (50 Nm). For 1996 vehicles, tighten the nut to 30 ft. lbs. (41 Nm). NOTE: On early-model vehicles where the drive belt is tensioned by pivoting the power steering pump assembly, do NOT fully tighten the mounting bolts at this time, since you will just have to loosen them again for belt installation and adjustment.
  13. Install the pump pulley using the GM Pulley Installer tool No. J–25033–B or equivalent. Press the drive pulley onto the power steering pump.
  14. Hand-tighten the pivot bolt, the adjusting bolt and the washer.
  15. Install the drive belt. On early-model vehicles so equipped, properly adjust the belt tension. For details on belt installation and tension adjustment, please refer to Section 1 of this manual.
  16. For 1993–96 vehicles install the upper fan shroud and the hood latch assembly.
  17. For 1996 vehicles, install the air cleaner assembly.
  18. Connect the negative battery cable.
  19. Refill the power steering reservoir and bleed the power steering system.
  20. Remove the jackstands and carefully lower the vehicle.
  21. Road test the vehicle, then check and top-off the power steering fluid.
Fig. 3: Removing the power steering pump pulley — 1985–92 vehicles

replace power steering pump - 213c6a5.jpg
Email me at greg.bernett@mcchord.af.mil for an engine picture breakdown.

    Posted on Jul 22, 2009

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    NOTE The following procedure requires the use of the GM Puller toolNo. J-25034-B or equivalent, and the GM Pulley Installer tool No.J-25033-B or equivalent.
    1. Disconnect the negative battery cable for safety.
    2. Remove the air cleaner assembly for access.
    3. Release tension and remove the drive belt.
    4. Remove the power steering pump pulley using a suitable puller tool.
    5. Remove the power steering pump retaining bolts, then reposition the pump as necessary for access to the hoses.
    6. Position a fluid catch pan under the power steering pump.
    7. Remove the hoses from the power steering pump and drain the excess fluid into the catch pan.
      WARNING Be sure to cap all openings in the pump hydraulic system toprevent excessive fluid spillage and the possibility of systemcontamination.
    8. Remove the power steering pump from the vehicle.

      0900c15280227d22.jpg enlarge_icon.gifenlarge_tooltip.gifFig. Pump pulley removal and installation


      0900c15280227d23.jpg enlarge_icon.gifenlarge_tooltip.gifFig. Exploded view of the power steering pump mounting


      0900c15280227d24.jpg enlarge_icon.gifenlarge_tooltip.gifFig. Typical power steering pump hose routing

    To install:
    1. Position the pump to the vehicle, then uncap and connect the pump hoses.
    2. Install the steering pump to the retaining bracket, then secureusing the retaining bolts. Tighten the nut to 30 ft. lbs. (41 Nm).
    3. Install the pump pulley using the GM Pulley Installer tool No.J-25033-B or equivalent. Press the drive pulley onto the power steeringpump.
    4. Hand-tighten the pivot bolt, the adjusting bolt and the washer.
    5. Install the drive belt.
    6. Install the air cleaner assembly.
    7. Connect the negative battery cable.
    8. Refill the power steering reservoir and bleed the power steering system.
    9. Road test the vehicle, then check and top-off the power steering fluid.

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