AutoZone | Repair Guides | Suspension And Steering | Steering | Power Steering Pump | AutoZone.com

Search suggestions

    My Vehicles

    Add a Vehicle

    Find a Store

    Select Store

    Save 20% Sitewide

    Use Code: YOUCHOOSE20

    See Details

    Get A $25 Gift Card

    Use Code: YOUCHOOSE25

    See Details

    GM Cadillac Deville_Fleetwood_ELD_Seville 1990-1998

    Power Steering Pump

    Print

    REMOVAL & INSTALLATION



    Catera
    1. Disconnect the negative battery cable.
    2.  
    3. Place a drain pan under the power steering fluid reservoir.
    4.  
    5. Siphon the power steering fluid from the reservoir to prevent excessive spillage.
    6.  
    7. Remove the serpentine drive belt.
    8.  
    9. Remove the power steering pump pulley.
    10.  
    11. Remove the gear inlet hose connection from the power steering pump.
    12.  
    13. Remove the fluid reservoir inlet hose from the power steering pump.
    14.  
    15. Raise and safely support the vehicle securely.
    16.  
    17. Remove the AIR injection crossover pipe support bracket.
    18.  
    19. Remove the power steering pump.
    20.  

    To install:

    1. Install the power steering pump. Tighten the bolts to 15 ft. lbs. (20 Nm).
    2.  
    3. Install the AIR injection crossover piper bracket and tighten the bolts to 15 ft. lbs. (20 Nm).
    4.  
    5. Lower the vehicle.
    6.  
    7. Install the gear inlet hose connection to the power steering pump. Tighten the connection to 21 ft. lbs. (28 Nm).
    8.  
    9. Install the fluid reservoir hose.
    10.  
    11. Attach the power steering pump pulley.
    12.  
    13. Refill the power steering fluid reservoir.
    14.  
    15. Connect the negative battery cable.
    16.  
    17. Bleed the power steering system.
    18.  

    Deville and Fleetwood-Early Models
    1. Remove the serpentine drive belt.
    2.  
    3. Remove the power steering fluid from the reservoir.
    4.  
    5. Remove the reservoir mounting bolts and remove the reservoir from the vehicle by disengaging the reservoir tubes from the adapter.
    6.  
    7. Remove the belt tensioner.
    8.  



    Click image to see an enlarged view

    Fig. Power steering pump pulley removal & installation-Deville and Fleetwood

    1. Remove the power steering pump pulley using tool J-29785-A or equivalent. Hold the body of the tool with a wrench and turn the bolt into the body of the tool to remove the pulley from the shaft.
    2.  
    3. Remove the pressure line fitting from the pump.
    4.  
    5. Remove the pump mounting bolts.
    6.  
    7. Use a small prybar to disengage the return line adapter clip from the adapter.
    8.  
    9. Disengage the adapter from the pump inlet. Make sure the O-ring is removed from the inlet port.
    10.  
    11. Remove the adapter from the return line.
    12.  



    Click image to see an enlarged view

    Fig. Power steering pump lines and adapter-early model Deville and Fleetwood

    To install:

    1. Inspect all adapter O-rings for proper positioning or damage. Replace any cut or damaged O-rings.
    2.  
    3. Insert the return line adapter clip on the adapter at the return line port. Make sure that the beveled edges of the clip are facing outward.
    4.  
    5. Position the adapter on the pump, inserting the pump inlet tube until fully seated.
    6.  
    7. Position the pump in the vehicle while inserting the return line into the adapter port. Make sure that the line is fully seated and is retained by the adapter clip.
    8.  
    9. Install the pump mounting bolts but do not tighten at this time.
    10.  
    11. Install the pressure line fitting to the pump.
    12.  
    13. Tighten the pump mounting bolts to 18 ft. lbs. (25 Nm) and the pressure line fitting to 20 ft. lbs. (27 Nm).
    14.  
    15. Press the pulley onto the pump shaft using tool J-25033-B or equivalent. The face of the pulley hub must be flush with the pump shaft.
    16.  
    17. Position the belt tensioner mounting bolt in the vehicle.
    18.  
    19. Install the reservoir by carefully inserting the reservoir tubes into the adapter ports. Use a rocking motion to fully seat the tubes in the adapter. Install the reservoir mounting bolts.
    20.  
    21. Install the belt tensioner and tighten the mounting nut to 55 ft. lbs. (75 Nm).
    22.  
    23. Install the serpentine drive belt.
    24.  
    25. Fill and bleed the power steering system.
    26.  

    Deville and Fleetwood-Late Models
    1. Remove the pump drive belt.
    2.  
    3. Remove the belt tensioner, if necessary for access.
    4.  
    5. Remove the power steering pump pulley using tool J-29785-A or equivalent. Hold the body of the tool with a wrench and turn the bolt into the body of the tool to remove the pulley from the shaft.
    6.  
    7. Remove the pressure line fitting from the pump. Remove the return line from the adapter using tool J-36391 or equivalent.
    8.  
    9. Remove the pump mounting bolts and the pump adapter assembly.
    10.  
    11. Disengage the adapter from the pump inlet. Make sure the pump O-ring is removed from the inlet port.
    12.  

    To install:



    Click image to see an enlarged view

    Fig. Power steering pump mounting-late model Deville and Fleetwood

    1. Inspect all adapter O-rings for proper positioning or damage. Replace any cut or damaged O-rings.
    2.  
    3. Position the adapter on the pump, inserting the pump inlet tube until fully seated.
    4.  
    5. Position the pump on the vehicle while inserting the adapter into the reservoir. The reservoir tubes do not need to be fully seated.
    6.  
    7. Insert the return pipe into the adapter port, making sure it is fully seated.
    8.  
    9. Install the pump mounting bolts but do not tighten at this time.
    10.  
    11. Install the pressure line fitting to the pump.
    12.  
    13. Tighten the pump mounting bolts to 18 ft. lbs. (25 Nm) and the pressure line fitting to 20 ft. lbs. (27 Nm).
    14.  
    15. Press the pulley onto the pump shaft using tool J-25033-B or equivalent. The face of the pulley hub must be flush with the pump shaft.
    16.  
    17. Install the belt tensioner, if removed, and tighten the mounting nut to 55 ft. lbs. (75 Nm).
    18.  
    19. Install the pump drive belt.
    20.  
    21. Fill and bleed the power steering system.
    22.  

    Eldorado and Seville
    4.5L engine
    1. Remove the pump drive belt.
    2.  
    3. Remove the belt tensioner, if necessary for access.
    4.  
    5. Remove the pump mounting bolts, then move the pump just enough for the pulley remover to access the shaft.
    6.  
    7. Remove the power steering pump pulley using tool J-29785-A or equivalent. Hold the body of the tool with a wrench and turn the bolt into the body of the tool to remove the pulley from the shaft.
    8.  
    9. Reinstall the pump and mounting bolts. Tighten the bolts just enough to hold the pump in place for disconnecting the power steering pressure hose from the pump.
    10.  



    Click image to see an enlarged view

    Fig. Power steering line routing-4.5L engine

    1. Remove the pressure hose from the pump.
    2.  
    3. Remove the pump adapter, if necessary. Remove the return line from the adapter using tool J-36391 or equivalent. If the adapter is removed from the pump, make sure the pump O-ring is removed from the inlet port.
    4.  



    Click image to see an enlarged view

    Fig. Power steering reservoir and adapter-4.5L engine

    To install:

    1. Inspect all adapter O-rings for proper positioning or damage. Replace any cut or damaged O-rings.
    2.  
    3. With a new O-ring in place, position the adapter on the pump, inserting the pump inlet tube until fully seated.
    4.  
    5. Loosely connect the pressure hose to the pump, but do not tighten the fitting at this time.
    6.  
    7. Press the pulley onto the pump shaft using tool J-25033-B or equivalent. The face of the pulley hub must be flush with the pump shaft.
    8.  
    9. Position the pump on the vehicle, mating adapter to reservoir. The reservoir tubes do not need to be fully seated. Insert the return pipe into the adapter port, making sure it is fully seated.
    10.  
    11. Install the pump mounting bolts and tighten to 18 ft. lbs. (25 Nm). Tighten the pressure line fitting to 20 ft. lbs. (27 Nm).
    12.  
    13. Install the belt tensioner and the pump drive belt.
    14.  
    15. Fill and bleed the power steering system.
    16.  



    Click image to see an enlarged view

    Fig. Power steering pump installation-4.5L engine

    4.6L ENGINE
    1. Remove the serpentine drive belt.
    2.  
    3. Remove the power steering fluid from the reservoir.
    4.  
    5. Disconnect the return line from the reservoir and the pressure line from the pump.
    6.  
    7. Remove the pump mounting bolt, remove the pump, reservoir, pulley, and bracket assembly from the vehicle.
    8.  
    9. Remove the pump and reservoir from the bracket.
    10.  
    11. Remove the retaining clips that attach the reservoir to the pump.
    12.  
    13. Remove the pulley from the pump as follows:
      1. If not equipped with center hub, remove the pulley using 3-jaw puller J-25031 and tool J-38343-4 or equivalents. Make sure that the puller is properly aligned to the pump shaft.
      2.  
      3. If equipped with center hub, remove the pulley using tool J-25034-B or equivalent. Hold the body of the tool with a wrench and turn the bolt into the body of the tool to remove the pulley from the shaft.
      4.  

    14.  

    To install:



    Click image to see an enlarged view

    Fig. Power steering pump mounting-1992-98 Eldorado and Seville with 4.6L engine

    1. Install the pulley to the pump as follows:
      1. If not equipped with center hub, install the pulley using tools J-36015 and J-39391 or equivalents. The face of the pulley hub must be flush with the pump shaft.
      2.  

    2.  


    WARNING
    Do not use an arbor press to install the pulley.

    1. If equipped with center hub, use installation tool J-25033-B or equivalent, to install the pulley.
    2.  

    1. Attach the reservoir to the pump with the retaining clips.
    2.  
    3. Install the pump and reservoir to the bracket and tighten the pump-to-bracket bolts to 18 ft. lbs. (24 Nm).
    4.  
    5. Position the pump, reservoir, pulley, and bracket assembly in the vehicle. Install the pump-to-engine mounting bolt and tighten to 35 ft. lbs. (47 Nm).
    6.  
    7. Connect the pressure line to the pump and tighten the fitting to 20 ft. lbs. (27 Nm).
    8.  
    9. Connect the return line to the reservoir.
    10.  
    11. Install the serpentine drive belt.
    12.  
    13. Fill and bleed the power steering system.
    14.  

    4.9L ENGINE
    1. Disconnect the negative battery cable.
    2.  
    3. Remove the serpentine drive belt.
    4.  
    5. Remove the pump pulley using removal tool J-25034-B or equivalent.
    6.  
    7. Disconnect the pressure line at the pump.
    8.  
    9. Remove the pump mounting bolts.
    10.  
    11. Remove the adapter from the pump as follows:
      1. Remove the power steering fluid from the reservoir.
      2.  
      3. Remove the pressure line retainer nut on the engine block to ease removal of the return line.
      4.  
      5. Remove the return line from the adapter using tool J-36391 or equivalent.
      6.  
      7. Reposition the pump to disengage the adapter from the pump inlet.
      8.  
      9. Disengage the return line from the adapter and remove the adapter from the reservoir tubes.
      10.  

    12.  

    To install:

    1. Inspect all adapter O-rings for proper positioning or damage. Replace any cut or damaged O-rings.
    2.  
    3. Make sure that all O-rings are properly positioned on the adapter, including the pump port O-ring and seal protector.
    4.  
    5. Lubricate all adapter ports with petroleum jelly.
    6.  
    7. Install the adapter on the return line.
    8.  
    9. Position the pump so the adapter pump inlet tube is positioned in the pump inlet. Be extremely careful to prevent seal damage.
    10.  
    11. Install the adapter on the reservoir tubes.
    12.  
    13. Install the pump mounting bolts and tighten to 18 ft. lbs. (24 Nm).
    14.  
    15. Install the retainer nut on the block.
    16.  
    17. Connect the pressure line at the pump.
    18.  
    19. Install the pulley using installation tool J-25033-B.
    20.  


    NOTE
    On 1990 vehicles the pulley hub must be flush with the end of the shaft. On 1991-93 vehicles, the pulley hub is installed until it contacts the internal stop.

    1. Install the serpentine drive belt.
    2.  
    3. Fill and bleed the power steering system.
    4.  



    Click image to see an enlarged view

    Fig. Power steering pump pulley removal & installation-1991-93 Eldorado and Seville with 4.9L engine



    Click image to see an enlarged view

    Fig. Power steering pump mounting-Eldorado and Seville with 4.9L engine

    BLEEDING



    If the power steering hydraulic system has been serviced, an accurate fluid level reading cannot be obtained unless air is bled from the system. The air in the fluid may cause pump cavitation noise and may cause pump damage over a period. Bleed the air from the system as follows:

    1. The engine must be OFF. Raise and safely support the front of the vehicle just so the front wheels are off the ground.
    2.  
    3. Turn the front wheel all the way to the left.
    4.  
    5. Add power steering fluid to the FULL COLD mark on the fluid level indicator. Leave the capstick removed from the reservoir.
    6.  
    7. Bleed the air from the system by turning the wheels from side-to-side without hitting the stops. Keep the fluid level at the FULL COLD mark and check its color. Fluid with air in it has a light tan appearance.
    8.  
    9. Repeat Step 4 about 12 times. If the engine had been started before the bleeding procedure was begun, repeat Step 4 about 20 times with the engine OFF.
    10.  
    11. Return the wheel to the center position and lower the vehicle to the ground.
    12.  
    13. Install the capstick on the reservoir and start the engine. With the engine idling, recheck the fluid level. If necessary, add fluid to bring the level to the FULL COLD mark.
    14.  
    15. Road test the vehicle to make sure the steering functions normally and is free from noise.
    16.  
    17. Check for fluid leaks at all power steering system connection points.
    18.  
    19. Recheck the fluid level. The fluid level should be at the HOT mark after the system has stabilized at its normal operating temperature.
    20.  

     
    AutoZone Logo