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Power Steering System: Removal & Installation Cadillac STS I

Manual & Power Steering ~4331 words

Removal Procedure

  1. Remove the air cleaner intake duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Place a drain pan under the vehicle.
  4. Disconnect the power steering cooler hose from the power steering reservoir.
  5. Disconnect the power steering reservoir outlet hose from the power steering reservoir.
  6. Remove the power steering reservoir retaining nuts.
  7. Remove the power steering reservoir from the vehicle.

Installation Procedure

  1. Install the power steering reservoir to the vehicle.
  2. Install the power steering reservoir retaining nuts. Tighten: Tighten the nuts to 9 N.m (80 lb in).
  3. Connect the power steering reservoir outlet hose to the power steering reservoir.
  4. Connect the power steering cooler hose to the power steering reservoir.
  5. Remove the drain pan from under the vehicle.
  6. Install the air cleaner intake duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  7. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  8. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  1. Remove the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(ref-197574-S25852276312005101200000) in Engine Mechanical - 3.6L (LY7).
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Place a drain pan under the vehicle.
  4. Disconnect the power steering cooler hose from the power steering reservoir.
  5. Disconnect the power steering reservoir outlet hose from the power steering reservoir.
  6. Remove the power steering reservoir retaining bolts.
  7. Remove the power steering reservoir from the vehicle.
  1. Install the power steering reservoir to the vehicle.
  2. Install the power steering reservoir retaining bolts. Tighten: Tighten the bolts to 9 N.m (80 lb in).
  3. Connect the power steering reservoir outlet hose to the power steering reservoir.
  4. Connect the power steering cooler hose to the power steering reservoir.
  5. Remove the drain pan from under the vehicle.
  6. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  7. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  8. Install the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(ref-197574-S25852276312005101200000) in Engine Mechanical - 3.6L (LY7).

Power Steering Pulley Replacement

Tools Required

  1. J 25033-C Pulley Installer
  2. J 25034-C Pulley Remover
  1. Remove the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7) or «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  2. Remove the drive belt. Refer to «Drive Belt Replacement - Power Steering and Air Conditioning»(ref-197574-S17500547472005101200000) in Engine Mechanical - 3.6L (LY7) or «Drive Belt Replacement - Air Conditioning, Power Steering and Water Pump»(ref-197575-S22002905792005101200000) in Engine Mechanical - 4.6L (LH2).
  3. Using the J 25034-C , remove the power steering pump pulley from the power steering pump.
  1. Using the J 25033-C , install the power steering pump pulley to the power steering pump.
  2. Ensure that the axial tolerance of the power steering pulley on the power steering pump is within 0.25 mm (0.010 in).
  3. Install the drive belt. Refer to «Drive Belt Replacement - Power Steering and Air Conditioning»(ref-197574-S17500547472005101200000) in Engine Mechanical - 3.6L (LY7) or «Drive Belt Replacement - Air Conditioning, Power Steering and Water Pump»(ref-197575-S22002905792005101200000) in Engine Mechanical - 4.6L (LH2).
  4. Install the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7) or «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  2. Remove the power steering pulley. Refer to «Power Steering Pulley Replacement»(ref-197600-S05868770292005101200000) .
  3. Place a drain pan under the vehicle.
  4. Remove the air cleaner assembly. Refer to «Air Cleaner Assembly Replacement»(ref-197553-S28415702912005101200000) in Engine Controls - 4.6L (LH2).
  5. Disconnect the power steering reservoir outlet hose from the power steering pump.
  6. Disconnect the power steering pressure hose from the power steering pump.
  7. Remove the power steering pump to engine mounting bolt.
  8. Remove the power steering bracket to the engine bolts.
  9. Remove the power steering pump with bracket from the vehicle.
  10. Remove the power steering pump to power steering bracket. Refer to «Power Steering Pump Bracket Replacement (LH2)»(ref-197600-S40417927822005101200000) or «Power Steering Pump Bracket Replacement (LY7)»(ref-197600-S36129178652005101200000) .
  1. Install the power steering pump to power steering bracket. Refer to «Power Steering Pump Bracket Replacement (LH2)»(ref-197600-S40417927822005101200000) or «Power Steering Pump Bracket Replacement (LY7)»(ref-197600-S36129178652005101200000) .
  2. Install the power steering pump with bracket to the vehicle.
  3. Install the power steering bracket to the engine bolts. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
  4. Install the power steering pump to the engine mounting bolt. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
  5. Connect the power steering pressure hose to the power steering pump.
  6. Connect the power steering reservoir outlet hose to the power steering pump.
  7. Remove the drain pan from under the vehicle.
  8. Install the power steering pulley. Refer to «Power Steering Pulley Replacement»(ref-197600-S05868770292005101200000) .
  9. Install the air cleaner assembly. Refer to «Air Cleaner Assembly Replacement»(ref-197553-S28415702912005101200000) in Engine Controls - 4.6L (LH2).
  10. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  11. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  2. Remove the power steering pulley. Refer to «Power Steering Pulley Replacement»(ref-197600-S05868770292005101200000) .
  3. Place a drain pan under the vehicle.
  4. Remove the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7).
  5. Disconnect the power steering reservoir outlet hose from the power steering pump.
  6. Disconnect the power steering pressure hose from the power steering pump.
  7. Remove the power steering bracket to the engine mounting bolts (1, 2, and 3).
  8. Remove the power steering pump with bracket from the vehicle.
  9. Remove the power steering pump bracket from the power steering pump. Refer to «Power Steering Pump Bracket Replacement (LH2)»(ref-197600-S40417927822005101200000) or «Power Steering Pump Bracket Replacement (LY7)»(ref-197600-S36129178652005101200000) .
  1. Install the power steering pump to the power steering pump bracket. Refer to «Power Steering Pump Bracket Replacement (LH2)»(ref-197600-S40417927822005101200000) or «Power Steering Pump Bracket Replacement (LY7)»(ref-197600-S36129178652005101200000) .
  2. Install the power steering pump with bracket to the vehicle.
  3. Install the power steering pump bracket to the engine mounting bolts (1, 2 and 3). Tighten: Tighten the bolts in sequence to 50 N.m (37 lb ft).
  4. Connect the power steering pressure hose to the power steering pump.
  5. Connect the power steering reservoir outlet hose to the power steering pump.
  6. Remove the drain pan from under the vehicle.
  7. Install the power steering pulley. Refer to «Power Steering Pulley Replacement»(ref-197600-S05868770292005101200000) .
  8. Install the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7).
  9. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  10. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  1. Remove the power steering pump. Refer to «Power Steering Pump Replacement (LH2)»(ref-197600-S27345497272005101200000) or «Power Steering Pump Replacement (LY7)»(ref-197600-S36827291702005101200000) .
  2. Remove the power steering pump to bracket bolts.
  3. Separate the power steering pump from the power steering bracket.
  1. Install the power steering pump to the power steering bracket.
  2. Install the Power steering pump to bracket bolts. Tighten: Tighten the bolts to 25 N.m (18 lb ft).
  3. Install the power steering pump. Refer to «Power Steering Pump Replacement (LH2)»(ref-197600-S27345497272005101200000) or «Power Steering Pump Replacement (LY7)»(ref-197600-S36827291702005101200000) .
  1. Remove the power steering pump. Refer to «Power Steering Pump Replacement (LH2)»(ref-197600-S27345497272005101200000) or «Power Steering Pump Replacement (LY7)»(ref-197600-S36827291702005101200000) .
  2. Remove the power steering pump to bracket bolts.
  3. Separate the power steering pump from the power steering pump bracket.
  1. Install the power steering pump to the power steering bracket.
  2. Install the Power steering pump to power steering pump bracket bolts. Tighten: Tighten the bolts to 25 N.m (18 lb ft).
  3. Install the power steering pump. Refer to «Power Steering Pump Replacement (LH2)»(ref-197600-S27345497272005101200000) or «Power Steering Pump Replacement (LY7)»(ref-197600-S36827291702005101200000) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(ref-197568-S26287798292005101200000) in Tires and Wheels.
  3. Loosen the outer tie rod jam nut (1).
  4. Remove the outer tie rod retaining nut.
  5. Using J 24319-B disconnect the outer tie rod from the steering knuckle.
  6. Remove the outer tie rod from the inner tie rod.
  1. Install the outer tie rod to the inner tie rod. Do not tighten the jam nut at this time.
  2. Connect the outer tie rod to the steering knuckle. Install the outer tie rod retaining nut. Tighten: Tighten the nut to 70 N.m (52 lb ft).
  3. Install the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(ref-197568-S26287798292005101200000) in Tires and Wheels.
  4. Lower the vehicle.
  5. Adjust the front toe. Refer to «Front Toe Adjustment»(ref-197577-S32656509152005101200000) in Wheel Alignment.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Disconnect the power steering cooler pipe/hose from the power steering lines.
  4. Remove the power steering cooler pipe/hose to frame retaining bolt.
  5. Lower the vehicle.
  6. Disconnect the power steering cooler pipe/hose from the power steering cooler.
  7. Remove the power steering cooler pipe/hose from the vehicle.
  1. Position the power steering cooler pipe/hose to the vehicle.
  2. Connect the power steering cooler pipe/hose to the power steering cooler.
  3. Install the power steering cooler pipe/hose to frame retaining bolt. Tighten: Tighten the bolts to 4 N.m (35 lb in).
  4. Connect the power steering cooler pipe/hose to the power steering lines.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Lower the vehicle.
  7. Remove the drain pan from under the vehicle.
  8. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Install a drain pan under the vehicle.
  4. Remove the power steering cooler bolts from the power steering cooler brackets.
  5. Disconnect the power steering lines from the power steering cooler.
  6. Remove the power steering cooler from the vehicle.
  1. Install the power steering cooler to the vehicle.
  2. Connect the power steering lines to the power steering cooler.
  3. Install the power steering cooler bolts to the power steering cooler brackets. Tighten: Tighten the bolts to 9 N.m (80 lb in).
  4. Remove the drain pan from under the vehicle.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Lower the vehicle.
  7. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Install a drain pan under the vehicle.
  4. Remove the power steering cooler bolts from the power steering cooler brackets.
  5. Disconnect the power steering lines from the power steering cooler.
  6. Remove the power steering cooler from the vehicle.
  1. Install the power steering cooler to the vehicle.
  2. Connect the power steering lines to the power steering cooler.
  3. Install the power steering cooler bolts to the power steering cooler brackets. Tighten: Tighten the bolts to 9 N.m (80 lb in).
  4. Remove the drain pan from under the vehicle.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Lower the vehicle.
  7. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Disconnect the power steering reservoir inlet hose from the power steering cooler.
  4. Remove the power steering reservoir inlet hose to frame retaining bolt.
  5. Lower the vehicle.
  6. Disconnect the power steering reservoir inlet hose from the power steering reservoir.
  7. Remove the power steering cooler pipe/hose from the vehicle.
  1. Position the power steering reservoir inlet hose to the vehicle.
  2. Connect the power steering reservoir inlet hose to the power steering reservoir.
  3. Install the power steering reservoir inlet hose to frame retaining bolt. Tighten: Tighten the bolts to 4 N.m (35 lb in).
  4. Connect the power steering reservoir inlet hose to the power steering cooler.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Lower the vehicle.
  7. Remove the drain pan from under the vehicle.
  8. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Disconnect the power steering reservoir inlet hose from the power steering cooler.
  4. Remove the power steering reservoir inlet hose to frame retaining bolt.
  5. Lower the vehicle.
  6. Disconnect the power steering reservoir inlet hose from the power steering reservoir.
  7. Remove the power steering cooler pipe/hose from the vehicle.
  1. Position the power steering reservoir inlet hose to the vehicle.
  2. Connect the power steering reservoir inlet hose to the power steering reservoir.
  3. Install the power steering reservoir inlet hose to frame retaining bolt. Tighten: Tighten the bolts to 4 N.m (35 lb in).
  4. Connect the power steering reservoir inlet hose to the power steering cooler.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Lower the vehicle.
  7. Remove the drain pan from under the vehicle.
  8. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  2. Place a drain pan under the vehicle.
  3. Remove the air cleaner intake duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  4. Disconnect the power steering reservoir outlet hose from the power steering pump.
  5. Disconnect the power steering reservoir outlet hose from the power steering reservoir.
  6. Remove the power steering reservoir outlet hose.
  1. Connect the power steering reservoir outlet hose to the power steering reservoir.
  2. Connect the power steering reservoir outlet hose to the power steering reservoir.
  3. Install the air cleaner intake duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  4. Remove the drain pan from under the vehicle.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  2. Place a drain pan under the vehicle.
  3. Remove the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7).
  4. Disconnect the power steering reservoir outlet hose from the power steering pump.
  5. Disconnect the power steering reservoir outlet hose from the power steering reservoir.
  6. Remove the power steering reservoir outlet hose.
  1. Connect the power steering reservoir outlet hose to the power steering reservoir.
  2. Connect the power steering reservoir outlet hose to the power steering reservoir.
  3. Install the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7).
  4. Remove the drain pan from under the vehicle.
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  2. Place a drain pan under the vehicle.
  3. Remove the air cleaner intake duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  4. Loosen the air cleaner assembly front half retaining screws.
  5. Remove the air cleaner assembly front half.
  6. Disconnect the power steering gear inlet hose fitting from the power steering pump.
  7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  8. Remove the power steering gear inlet hose to the frame mounting bolts.
  9. Remove the power steering gear inlet hose to power steering gear retaining bolt.
  10. Remove the power steering gear inlet hose from the power steering gear.
  11. Remove the power steering hose from the vehicle.
  1. Install the power steering hose to the vehicle.
  2. Install the power steering gear inlet hose to power steering gear retaining bolt. Tighten: Tighten the bolt to 23 N.m (17 lb in).
  3. Install the power steering gear inlet hose to frame mounting bolts. Tighten: Tighten the bolts to 4 N.m (35 lb in).
  4. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  5. Lower the vehicle.
  6. Connect the power steering gear inlet hose fitting to the power steering pump. Tighten: Tighten the fitting to 38 N.m (28 lb in)
  7. Install the power steering inlet hose quick connect to fitting.
  8. Install the air cleaner assembly front half. Tighten: Tighten the screws to 8 N.m (71 lb in).
  9. Install the air cleaner intake duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-197553-S04945234442005101200000) in Engine Controls - 4.6L (LH2).
  10. Remove the drain pan from under the vehicle.
  11. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  2. Place a drain pan under the vehicle.
  3. Remove the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7).
  4. Loosen the air cleaner assembly front half retaining screws.
  5. Remove the air cleaner assembly front half.
  6. Remove the power steering gear inlet hose fitting from the power steering pump.
  7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  8. Remove the power steering gear inlet hose to the frame mounting bolts.
  9. Remove the power steering gear inlet hose to power steering gear retaining bolt.
  10. Remove the power steering gear inlet hose from the power steering gear.
  11. Remove the power steering hose from the vehicle.
  1. Install the power steering hose to the vehicle.
  2. Install the power steering gear inlet hose to the power steering gear.
  3. Install the power steering gear inlet hose to power steering gear retaining bolt. Tighten: Tighten the bolt to 23 N.m (17 lb in).
  4. Install the power steering gear inlet hose to frame mounting bolts. Tighten: Tighten the bolts to 4 N.m (35 lb in).
  5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  6. Lower the vehicle.
  7. Install the power steering gear inlet hose fitting to the power steering pump. Tighten: Tighten the fitting to 38 N.m (28 lb in).
  8. Install the power steering gear inlet hose quick connect to the fitting.
  9. Install the air cleaner assembly front half. Tighten: Tighten the screws to 8 N.m (71 lb in).
  10. Install the air cleaner intake duct. Refer to «Air Cleaner Intake Duct Replacement»(ref-197548-S12301214282005101200000) in Engine Controls - 3.6L (LY7).
  11. Remove the drain pan from under the vehicle.
  12. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  3. Place a drain pan under the vehicle.
  4. Remove the power steering gear outlet hose to frame retaining bolt.
  5. Disconnect the power steering gear outlet hose from the power steering cooler.
  6. Remove the power steering lines to power steering gear retaining bolt.
  7. Disconnect the power steering gear outlet hose from the power steering gear.
  8. Remove the power steering return line from the vehicle.
  1. Install the power steering gear outlet hose to the vehicle.
  2. Connect the power steering gear outlet hose to the power steering gear.
  3. Install the power steering hoses to power steering gear retaining bolt. Tighten: Tighten the bolt to 23 N.m (17 lb ft).
  4. Connect the power steering gear outlet hose to the power steering cooler.
  5. Install the power steering gear outlet hose to frame retaining bolt. Tighten: Tighten the bolt to 4 N.m (40 lb in).
  6. Remove the drain pan from under the vehicle.
  7. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  8. Lower the vehicle.
  9. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .

Power Steering Gear Replacement

Tools Required

  1. J 24319-B Steering Linkage and Tie Rod Puller
  2. J 42640 Steering Column Anti-Rotation Pin
  1. Install the J 42640 to the steering column.
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197567-S01952905382005101200000) in General Information.
  3. Remove the front tires and wheels. Refer to «Tire and Wheel Removal and Installation»(ref-197568-S26287798292005101200000) in Tires and Wheels.
  4. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(ref-197566-S09922059352005101200000) in Body Front End.
  5. Remove the intermediate shaft lower pinch bolt.
  6. Disconnect the intermediate shaft from the power steering gear.
  7. Disconnect the variable effort steering harness connector.
  8. Remove the outer tie rod retaining nuts.
  9. Using the J 24319-B , separate the outer tie rod from the steering knuckles.
  10. Place a drain pan under the vehicle.
  11. Remove the power steering hoses to power steering gear retaining bolt.
  12. Disconnect the power steering hoses from the power steering gear.
  13. If equipped with the 4.6L (LH2) engine, perform the following steps: Disconnect the left brake line from the brake hose. Plug the brake line. Carefully position the brake line to the side.
  14. If equipped with AWD, using a suitable jack, support the bottom of the front differential housing.
  15. If equipped with AWD, loosen the right engine mount nut.
  16. If equipped with AWD, raise the differential housing to clear the steering rack bolt.
  17. Remove the power steering gear mounting bolts.
  18. If equipped with the 4.6L (LH2) engine, remove the left rearward lower control arm to frame mounting nut and bolt.
  19. Remove the power steering gear through the left wheel opening.
  1. Install the power steering gear through the left wheel opening.
  2. If equipped with the 4.6L (LH2) engine, install the left rearward lower control arm to frame mounting bolt and nut.
  3. Install the power steering gear retaining bolts. Tighten: Tighten the bolts to 180 N.m (134 lb ft).
  4. If equipped with AWD, lower the differential housing.
  5. If equipped with AWD, tighten the right lower engine mount to the frame nut. Tighten: Tighten the nut to 80 N.m (59 lb ft).
  6. If equipped with AWD, remove the support from the bottom of the differential housing.
  7. If equipped with the 4.6L (LH2) engine, install the left brake line to the brake hose. Tighten: Tighten the line to 27 N.m (20 lb in).
  8. Install the power steering hoses to the power steering gear.
  9. Install the power steering hoses to the power steering gear retaining bolt. Tighten: Tighten the bolt to 23 N.m (17 lb ft).
  10. Remove the drain pan from under the vehicle.
  11. Install the outer tie rod to the steering knuckles. Tighten: Tighten the nuts to 70 N.m (52 lb ft).
  12. Connect the variable effort steering harness connector.
  13. Connect the intermediate shaft to the power steering gear.
  14. Install the intermediate shaft lower pinch bolt. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
  15. Install the tire and wheels. Refer to «Tire and Wheel Removal and Installation»(ref-197568-S26287798292005101200000) in Tires and Wheels.
  16. Lower the vehicle.
  17. Remove the J 42640 from the steering column.
  18. Bleed the power steering system. Refer to «Bleeding the Power Steering System»(ref-197600-S30135767782005101200000) .
  19. Adjust the front toe. Refer to «Front Toe Adjustment»(ref-197577-S32656509152005101200000) in Wheel Alignment.

The hydraulic power steering pump is a constant displacement vane-type pump that provides hydraulic pressure and flow for the power steering gear. The hydraulic power steering pumps are either belt-driven or direct-drive, cam-driven.

The power steering fluid reservoir holds the power steering fluid and may be integral with the power steering pump or remotely located. The following locations are typical locations for the remote reservoir

  1. Mounted to the front of the dash panel
  2. Mounted to the inner fender
  3. Mounted to a bracket on the engine

The 2 basic types of power steering gears are listed below

  1. A recirculating ball system
  2. A rack and pinion system

In the recirculating ball system, a worm gear converts steering wheel movement to movement of a sector shaft. A pitman arm attached to the bottom of the sector shaft actually moves one tie rod and an intermediate rod move the other tie rod.

In the rack and pinion system, the rack and the pinion are the 2 components that convert steering wheel rotation to lateral movement. The steering shaft is attached to the pinion in the steering gear. The pinion rotates with the steering wheel. Gear teeth on the pinion mesh with the gear teeth on the rack. The rotating pinion moves the rack from side to side. The lateral action of the rack pushes and pulls the tie rods in order to change the direction of the vehicle's front wheels.

The power steering pressure hose connects the power steering pump union fitting to the power steering gear and allows pressurized power steering fluid to flow from the pump to the gear.

The power steering return hose returns fluid from the power steering gear back to the power steering fluid reservoir. The power steering return line may contain an integral fin-type or line-type power steering fluid cooler.

In a typical power steering system, a pump generates hydraulic pressure, causing fluid to flow, via the pressure hose, to the steering gear valve assembly. The steering gear valve assembly regulates the incoming fluid to the right and left chambers in order to assist in right and left turns.

Turning the steering wheel activates the valve assembly, which applies greater fluid pressure and flow to 1 side of the steering gear piston, and lower pressure and flow to the other side of the piston. The pressure assists the movement of the gear piston. Tie rods transfer this force to the front wheels, which turn the vehicle right or left.

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