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Power Steering System Cadillac XLR I

Manual & Power Steering 11 illustrations ~4549 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Adjuster Plug Lock Nut68 N.m50 lb ft
Cylinder Line End Fittings27 N.m20 lb ft
Cylinder Line Valve End Fittings17 N.m13 lb in
Crossmember Mounting Nuts110 N.m81 lb ft
Inner Tie Rod100 N.m74 lb ft
Outer Tie Rod End Stud Nut to Knuckle
First Pass20 N.m15 lb ft
Second Pass160 degrees
Final Pass45 N.m33 lb ft
Power Steering Hose Fittings27 N.m20 lb ft
Power Steering Cooler Mounting Bolts to Crossmember11 N.m97 lb in
Power Steering Gear Mounting Bolt Nuts to Crossmember100 N.m74 lb ft
Power Steering Pump Mounting Bolts25 N.m18 lb ft
Power Steering Pump Pulley Bolts50 N.m37 lb ft
Power Steering Reservoir Bracket Bolts to Engine10 N.m7 lb ft

Fastener Tightening Specifications

Power Steering Pump Specifications

VehicleEngine CodeEngine SizeHigh FlowPressure Relief
LPMGPMKPaPSI
XLRLC34.4L9.1/10.62.4/2.88619/93081250/1350
XLRLH24.6L9.1/10.62.4/2.88619/93081250/1350

Power Steering Pump Specifications

Scheme 1

Scheme 1: Power Steering Gear Disassembled View (Magnasteer)
Scheme 1: Power Steering Gear Disassembled View (Magnasteer)
CalloutComponent Name
1Lubrication Fitting
2Hexagon Slotted Nut
3Cotter Pin
4Tie Rod Seal
5Outer Tie Rod
6Hexagon Jam Nut
7Tie Rod End Clamp
8Rack and Pinion Boot
9Large Boot Retaining Clamp
10Inner Tie Rod
11Adjuster Plug Lock Nut
12Shock Dampener Ring
13Mounting Bracket Assembly
14Mounting Grommet
15Cylinder Line (LH)
16Cylinder Line (RH)
17O-ring Seal
18O-ring Seal
19Rack and Pinion Gear Assembly (Partial)
20Dust Cover
21Shock Dampener Ring
22Inner Tie Rod
23Breather Tube
24Large Boot Retaining Clamp
25Rack and Pinion Boot
26Tie Rod End Clamp
27Hexagon Jam Nut
28Outer Tie Rod
29Cotter Pin
30Hexagon Slotted Nut
31Tie Rod Seal
32Lubrication Fitting

Begin the system diagnosis by reviewing the system Description and Operation. Refer to Power Steering System Description and Operation (w/o Electro-Hydraulic Steering) . Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Power Steering System in order to identify the correct procedure for diagnosing the system and where the procedure is located.

IMPORTANTThe following steps must be completed before using the symptom tables
  1. Determine if the vehicle is equipped with an electrically assisted variable effort system. Perform electrical diagnosis before proceeding with mechanical diagnosis. Refer to «Diagnostic Starting Point - Variable Effort Steering»(/cadillac/xlr/i-2003-2009/remont/electronic-steering/#variable-effort-steering-system__diagnostic-starting-point-variable-effort) .
  2. Review the system description and operation in order to familiarize yourself with the system functions. Refer to «Power Steering System Description and Operation (w/o Electro-Hydraulic Steering)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the power steering system.
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
  3. Inspect for leaking power steering components. If necessary, refer to «Power Steering Fluid Leaks»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__power-steering-fluid-leaks) .
  4. Verify the power steering reservoir for the proper operating specification. Refer to «Checking and Adding Power Steering Fluid»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__checking-and-adding-power-steering-fluid) .
  5. Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown fluid - burnt Debris in fluid - plastic or dirt
  6. If necessary, flush the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

Symptoms List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

  1. «Power Steering Fluid Leaks»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__power-steering-fluid-leaks)
  2. «Rattle, Clunk, or Shudder Noise from the Power Steering System»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system)
  3. «Whine or Growl Noise from the Power Steering System»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system)
  4. «Steering Effort Hard or Too Easy in One or Both Directions»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__steering-effort-hard-or-too-easy)

Scheme 2

Scheme 2: Power Steering System Test
Scheme 2: Power Steering System Test
CalloutComponent Name
1Power Steering Return Hose
2Power Steering Pressure Hose

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 5: This step tests the system for restrictions.
  2. 7: This step tests the following components for the following conditions: The pump for internal leaks The power steering pipes for kinks
  3. 8: This step tests the ability of the pump to regulate flow at maximum pressure.
  4. 10: This step tests the ability of the pump to regulate flow under normal operating conditions.
  5. 12: This step tests the internal components of the pump and the gear.
StepActionValue(s)YesNo
DEFINITION: The Power Steering System Test Procedure will perform the following functions: Test the operation of the hydraulic power steering system. Test the operation of the power steering pump and power steering gear. Identify restrictions in the system.
1Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown fluid - burnt Debris in fluid - plastic or dirt Is the fluid free of contamination?Go to Step 3Go to Step 2
2Flush the power steering system. Refer to Power Steering System Flushing . Did you complete the procedure?Go to Step 3
3IMPORTANT: In order to accurately diagnose the system, the malfunction must be present during the test procedure. Attempt to duplicate the condition.Is the condition present?Go to Step 4System OK
4Turn the ignition switch to the OFF position. Place a drain pan under the vehicle in order to catch any power steering fluid. Disconnect the power steering pressure pipe/hose from the power steering pump or the power steering gear as necessary. Install the J 44721 Power Steering Analyzer. See Special Tools . Fill the power steering system. Refer to Checking and Adding Power Steering Fluid . Did you complete the installation?Go to Step 5
5Fully open the J 44721 valve. See Special Tools . Start the engine. NOTE: Refer to Steering Wheel in the Full Turn Position Notice . Turn the steering wheel and BRIEFLY hold the steering wheel against the steering stop in order to release any trapped air from the system. Inspect and ensure that all of the power steering pipe/hose connections are not leaking. Observe the pressure reading. Is the pressure reading greater than the specified value?1585 kPa (230 psi)Go to Step 6Go to Step 7
6IMPORTANT: A restriction may be present in the power steering system. Turn off the engine IMMEDIATELY. Locate and repair the restriction.Did you complete the repair?Go to Step 15
7Allow the engine to run until the engine reaches full operating temperature. Record the pressure reading and flow reading. Partially close the J 44721 valve until the system pressure reaches the specified value, then record the FLOW reading. See Special Tools . Subtract second flow reading from the first flow reading. Is the flow DECREASE greater than 3.8 L (1 gal) per minute?4827 kPa (700 psi)Go to Step 13Go to Step 8
8IMPORTANT: Do not leave the valve closed for more than 5 seconds, or internal pump damage could accrue. Fully close then open the J 44721 valve 3 times. See Special Tools . Record all of the high pressure readings. Refer to Power Steering Pump Specifications for power steering system pressure relief specifications.Are the three high pressure readings within specifications?Go to Step 9Go to Step 13
9Are the three high pressure readings within 245 kPa (50 psi) of each other?Go to Step 10Go to Step 13
10Increase the engine speed to approximately 1500 RPM. Record the flow reading. Refer to Power Steering Pump Specifications for power steering system pressure specifications. Is the actual flow reading within specifications?Go to Step 11Go to Step 13
11Is the difference between the actual flow reading and the maximum flow specification more than 3.8 L (1 gal) per minute?Go to Step 13Go to Step 12
12NOTE: Refer to Steering Wheel in the Full Turn Position Notice . Turn the steering wheel from steering stop to steering stop and record the FLOW readings at each stop.Is the flow LOWER than 3.8 L (1 gal) per minute?Go to Step 15Go to Step 14
13Replace the power steering pump. Refer to Power Steering Pump Replacement (RPO LH2) or Power Steering Pump Replacement (RPO LC3) . Did you complete the replacement?Go to Step 15
14The power steering gear is leaking across the piston or bypassing the valve circuit. Replace the power steering gear. Refer to Steering Gear Replacement . Did you complete the replacement?Go to Step 15
15Test the power steering system for the original condition. Does the original condition still exist?Go to Step 5Go to Step 16
16Disconnect and remove the J 44721 from the vehicle. See Special Tools . Connect the vehicle power steering pipes/hoses. Bleed the power steering system and add fluid as necessary. Refer to Power Steering System Bleeding . Did you complete the repair?System OK
IMPORTANT
In order to accurately diagnose the system, the malfunction must be present during the test procedure.
IMPORTANT
A restriction may be present in the power steering system. Turn off the engine IMMEDIATELY.
IMPORTANT
Do not leave the valve closed for more than 5 seconds, or internal pump damage could accrue.

Power Steering System Test

Power Steering Fluid Leaks

StepActionYesNo
1Did you review the Power Steering System General Description and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that power steering fluid leaks are present. Is the power steering system leaking?Go to Step 3System OK
3Inspect the power steering system fittings. Are the fittings leaking?Go to Step 8Go to Step 4
4Inspect the power steering hoses. Are the hoses leaking?Go to Step 9Go to Step 5
5Inspect the power steering sensors. Are the sensors leaking?Go to Step 10Go to Step 6
6Inspect the power steering pump and the reservoir for leaks. Is the power steering pump or reservoir leaking?Go to Step 11Go to Step 7
7Inspect the power steering gear for leaks. Is the power steering gear leaking?Go to Step 12Go to Step 8
8Tighten the fittings. Refer to Fastener Tightening Specifications . Did you complete the repair?Go to Step 13
9Replace the power steering hoses. Refer to the appropriate procedure(s): Power Steering Fluid Reservoir Outlet Hose Replacement Power Steering Pressure Pipe/Hose Replacement Power Steering Return Hose Replacement (Power Steering Gear to Cooler) or Power Steering Return Hose Replacement (Cooler to Power Steering Reservoir) Did you complete the repair?Go to Step 13
10Replace the power steering sensors. Did you complete the repair?Go to Step 13
11Replace the power steering pump or reservoir. Refer to Power Steering Pump Replacement (RPO LH2) or Power Steering Pump Replacement (RPO LC3) or Remote Power Steering Fluid Reservoir Replacement . Did you complete the repair?Go to Step 13
12Replace the power steering gear. Refer to Steering Gear Replacement . Did you complete the repair?Go to Step 13
13Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Steering Fluid Leaks

StepActionYesNo
1Did you review the Power Steering System General Description and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that a rattle, clunk or shudder noise is present. Is a rattle, clunk or shudder noise present?Go to Step 3System OK
3Inspect the power steering hoses for proper routing and clearance. Is the routing or clearance of the power steering hoses incorrect?Go to Step 12Go to Step 4
4Inspect the engine drive belt for cracking or excessive wear. Refer to Drive Belt Replacement in Engine Mechanical-4.6L (LH2). Is the drive belt cracked or excessively worn?Go to Step 13Go to Step 5
5Inspect the power steering pump pulley for damage. Is the power steering pump pulley damaged?Go to Step 14Go to Step 6
6Inspect the power steering pump and the power steering mounting bracket/brace for the proper installation. Refer to Power Steering Pump Replacement (RPO LH2) or Power Steering Pump Replacement (RPO LC3) . Is the power steering pump installation incorrect?Go to Step 15Go to Step 7
7Inspect the power steering gear for the proper installation. Refer to Steering Gear Replacement . Is the power steering gear installation incorrect?Go to Step 16Go to Step 8
8Inspect the steering gear bearing preload for the proper adjustment. Refer to Steering Gear Rack Bearing Preload Adjustment - Off Vehicle (Magnasteer) . Is the steering gear bearing preload adjustment incorrect?Go to Step 17Go to Step 9
9Inspect the steering linkage. Is the steering linkage worn?Go to Step 18Go to Step 10
10Inspect the suspension. Is the suspension worn?Go to Step 19Go to Step 11
11Inspect the intermediate shaft. Is the intermediate shaft worn?Go to Step 20Go to Step 3
12Adjust or replace the hoses. Refer to the appropriate procedure(s): Power Steering Fluid Reservoir Outlet Hose Replacement Power Steering Pressure Pipe/Hose Replacement Power Steering Return Hose Replacement (Power Steering Gear to Cooler) or Power Steering Return Hose Replacement (Cooler to Power Steering Reservoir) Did you complete the repair?Go to Step 21
13Replace the engine drive belt. Refer to Drive Belt Replacement in Engine Mechanical-4.6L (LH2). Did you complete the repair?Go to Step 21
14Replace the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement (RPO LH2) or Power Steering Pump Pulley Replacement (RPO LC3) . Did you complete the repair?Go to Step 21
15Install the power steering pump correctly. Refer to Power Steering Pump Replacement (RPO LH2) or Power Steering Pump Replacement (RPO LC3) . Did you complete the repair?Go to Step 21
16Install the power steering gear correctly. Refer to Steering Gear Replacement . Did you complete the repair?Go to Step 21
17Adjust the steering gear bearing preload. Refer to Steering Gear Rack Bearing Preload Adjustment - Off Vehicle (Magnasteer) . Did you complete the repair?Go to Step 21
18Replace the worn steering linkage. Did you complete the repair?Go to Step 21
19Replace the worn suspension components. Refer to Diagnostic Starting Point - Suspension General Diagnosis . Did you complete the repair?Go to Step 21
20Replace the intermediate shaft. Refer to Intermediate Steering Shaft Replacement in Steering Wheel and Column. Did you complete the repair?Go to Step 21
21Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Rattle, Clunk, or Shudder Noise from the Power Steering System

StepActionYesNo
1Did you review the Power Steering System Description and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that a whine or growl noise is present. Is a whine or growl noise present?Go to Step 3System OK
3Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown Fluid - burnt Debris in fluid - plastic or dirt Is the fluid free of contamination?Go to Step 5Go to Step 4
4Flush the power steering system. Refer to Power Steering System Bleeding . Did you complete the procedure?Go to Step 11Go to Step 5
5Using the J 39570 Chassis Ear, inspect the power steering gear for a whine or growl noise. Is the noise present at the power steering gear?Go to Step 8Go to Step 6
6Using the J 39570 , inspect the power steering pump for a whine or growl noise. Is the noise present at the power steering pump?Go to Step 9Go to Step 7
7Using the J 39570 , inspect the power steering hoses for a whine or growl noise. Is the noise present at the power steering hoses?Go to Step 10Go to Step 2
8Replace the power steering gear. Refer to Steering Gear Replacement . Did you complete the repair?Go to Step 11
9Replace the power steering pump. Refer to Power Steering Pump Replacement (RPO LH2) or Power Steering Pump Replacement (RPO LC3) . Did you complete the repair?Go to Step 11
10Adjust the routing of the power steering hoses. Did you complete the repair?Go to Step 11
11Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Whine or Growl Noise from the Power Steering System

Steering Effort Hard or Too Easy in One or Both Directions

StepActionYesNo
1Did you review the Power Steering System General Description and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that the steering effort is hard in one or both directions. Does the system operate normally?System OKGo to Step 3
3Perform the power steering test procedure. Refer to Power Steering System Test . Did you complete the procedure?Go to Step 4
4Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Steering Effort Hard or Too Easy in One or Both Directions

  1. Fill pump reservoir with fluid to minimum system level, FULL COLD level, or middle of hash mark on cap stick fluid level indicator.
  2. If equipped with hydro-boost, fully charge the hydro-boost accumulator using the following procedure: Start the engine. Firmly apply the brake pedal 10-15 times. Turn the engine OFF.
  3. Raise the vehicle until the front wheels are off the ground. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  4. Key on engine OFF, turn the steering wheel from stop to stop 12 times. Vehicles equipped with hydro-boost systems or longer length power steering hoses may require turns up to 15 to 20 stop to stops.
  5. Verify power steering fluid level per operating specification. Refer to «Checking and Adding Power Steering Fluid»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__checking-and-adding-power-steering-fluid) .
  6. Start the engine. Rotate steering wheel from left to right. Check for sign of cavitation or fluid aeration (pump noise/whining).
  7. Verify the fluid level. Repeat the bleed procedure, if necessary.

Checking and Adding Power Steering Fluid

Note. When adding fluid or making a complete fluid change, always use the proper power steering fluid. Failure to use the proper fluid will cause hose and seal damage and fluid leaks.

  1. Clean the area surrounding the reservoir cap.
  2. Remove the reservoir cap.
  3. Inspect the power steering pump fluid level at regular intervals. Use the appropriate procedure below. Add fluid when required. Refer to «Fluid and Lubricant Recommendations»(/cadillac/xlr/i-2003-2009/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations) . Fluid Is Hot Run the engine until the fluid reaches about 80°C (170°F). Turn the engine OFF. Remove the reservoir cap. Inspect the fluid level on the capstick. Ensure that the fluid level is at the HOT/FULL mark on the capstick.
  4. If the fluid level is low, add power steering fluid to the proper level.
  5. Install the reservoir cap.
  6. When checking the fluid level after servicing the steering system, bleed the air from the system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
IMPORTANTDo not reuse any drained power steering fluid regardless of appearance or condition.
  1. Turn OFF the engine.
  2. Raise the front end of the vehicle off the ground until the tires and wheels turn freely. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  3. Place a large container under the fluid return hose in order to collect the draining fluid.
  4. Remove the fluid return hose at the power steering pump reservoir inlet connection.
  5. Plug the reservoir return hose inlet connection on the power steering pump.
  6. With the key on engine off, turn the steering wheel fully to the left and to the right while an assistant maintains the minimum fluid level in the reservoir using new approved power steering fluid. Continue until the fluid from the return hose runs clear.
  7. Remove the plug from the pump reservoir inlet connection and install the fluid return hose to the pump reservoir.
  8. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  9. Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown fluid - burnt Plastic debris or dirt chunks
  10. If the fluid is contaminated, repeat steps 2-9.
  11. Lower the vehicle and check the Power Steering system for leaks.

Scheme 3

Scheme 3: Remote Power Steering Fluid Reservoir Replacement
Scheme 3: Remote Power Steering Fluid Reservoir Replacement
CalloutComponent Name
Preliminary Procedures Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement . Remove the fuel injector sight shield. Refer to Intake Manifold Sight Shield Replacement or Fuel Injector Sight Shield Replacement .
1Power Steering Reservoir Inlet Hose
2Power Steering Reservoir Outlet Hose
3Power Steering Reservoir Bracket Nut (Qty: 2) NOTE: Refer to Fastener Notice . Tighten: 10 N.m (7 lb ft)
4Power Steering Reservoir Tip: Bleed the power steering system. Refer to Power Steering System Bleeding .
NOTE
Refer to Fastener Notice .

Remote Power Steering Fluid Reservoir Replacement

Power Steering Pump Pulley Replacement (RPO LH2)

Tools Required

  1. J 25033-C Power Steering Pump Pulley Installer
  2. J 25034-C Power Steering Pump Pulley Remover

Removal Procedure

  1. Remove the accessory drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) for the 4.6L (LH2) engine.
  2. Using the J 25034-C , remove the pulley from the power steering pump.

Installation Procedure

  1. Using the J 25033-C , install the power steering pump pulley onto the power steering pump.
  2. Install the accessory drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) for the 4.6L (LH2) engine.

Scheme 4

Scheme 4: Power Steering Pump Pulley Replacement (RPO LC3)
Scheme 4: Power Steering Pump Pulley Replacement (RPO LC3)
CalloutComponent Name
NOTE: Refer to Fastener Notice . Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedures Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement . Remove the supercharger drive belt. Refer to Supercharger Belt Replacement . Remove the air conditioner belt tensioner. Refer to Air Conditioning Compressor Belt Tensioner Replacement .
1Power Steering Pump Pulley Bolt (Qty: 3) Tighten: 50 N.m (37 lb ft)
2IMPORTANT: When removing or replacing the power steering pump pulley a special purpose grease must be applied to the splined shaft of the power steering pump. Power Steering Pump Pulley Assembly Tip: Pull the power steering pump pulley off of the splined shaft. Apply grease GM® P/N 1051344 (Canada P/N 993037) to the splines on the power steering pump shaft.
NOTE
Refer to Fastener Notice .
IMPORTANT
When removing or replacing the power steering pump pulley a special purpose grease must be applied to the splined shaft of the power steering pump.

Power Steering Pump Pulley Replacement (RPO LC3)

  1. Remove the power steering fluid reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  2. Remove the power steering pump pulley. Refer to «Power Steering Pump Pulley Replacement (RPO LH2)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__power-steering-pump-pulley-replacement-rpo) or «Power Steering Pump Pulley Replacement (RPO LC3)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  3. Remove the power steering reservoir outlet pipe/hose. Refer to «Power Steering Fluid Reservoir Outlet Hose Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  4. Remove the power steering pump mounting bolts from the power steering pump.
  5. Remove the power steering pressure hose. Refer to «Power Steering Pressure Pipe/Hose Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  1. Install the power steering pressure hose to the pump. Refer to «Power Steering Pressure Pipe/Hose Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  2. Install the power steering pump mounting bolts to the power steering pump. Tighten: Tighten the bolts to 25 N.m (18 lb ft).
  3. Install the power steering reservoir outlet pipe/hose. Refer to «Power Steering Fluid Reservoir Outlet Hose Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system)
  4. Install the power steering pump pulley. Refer to «Power Steering Pump Pulley Replacement (RPO LH2)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__power-steering-pump-pulley-replacement-rpo) or «Power Steering Pump Pulley Replacement (RPO LC3)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  5. Install the power steering fluid reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  6. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

Scheme 5

Scheme 5: Power Steering Pump Replacement (RPO LC3)
Scheme 5: Power Steering Pump Replacement (RPO LC3)
CalloutComponent Name
Preliminary Procedures Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement . Use a suitable tool to remove the fluid from the power steering pump reservoir. Remove the supercharger drive belt. Refer to Supercharger Belt Replacement . Remove the air conditioner belt tensioner. Refer to Air Conditioning Compressor Belt Tensioner Replacement . Remove the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement (RPO LH2) or Power Steering Pump Pulley Replacement (RPO LC3) . Fill and bleed the power steering system after the repair has been completed. Refer to. Power Steering System Bleeding .
1Power Steering Pump Inlet Hose Clamp Tip: Place a drain pan under the vehicle. Release the hose clamp and pull the inlet hose off of the power steering pump inlet tube.
2Power Steering Pump Bolt (Qty: 2) NOTE: Refer to Fastener Notice . Tip: Remove the power steering pump bolts from the pump. Tighten: 25 N.m (18 lb ft)
3IMPORTANT: When removing or replacing the power steering pump and/or pulley a special purpose grease must be applied to the splined shaft of the power steering pump. Power Steering Pump Tip: Pull the power steering pump from the bracket. Apply grease GM® P/N 1051344 (Canada P/N 993037) to the splines on the power steering pump shaft.
4Power Steering Pump Pressure Hose Fitting Bolt Tip: Remove the power steering pressure hose bolt from the pump. Tighten: 27 N.m (20 lb ft)
NOTE
Refer to Fastener Notice .
IMPORTANT
When removing or replacing the power steering pump and/or pulley a special purpose grease must be applied to the splined shaft of the power steering pump.

Power Steering Pump Replacement (RPO LC3)

Tools Required

J 42188 Ball Joint Separator. See Special Tools .

  1. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the tire and wheel assemblies. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
  3. Loosen, do not remove, the outer tie rod end stud nut (2) from the outer tie rod end ball stud.
  4. Using the J 42188 , loosen the outer tie rod end stud to steering knuckle connection. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__special-tools) .
  5. Remove the outer tie rod end stud nut (3) in order to separate the tie rod (5) from the steering knuckle (4).
  6. Loosen the jam nut (2) on the inner tie rod assembly.
  7. Remove the outer tie rod end (5) from the inner tie rod assembly (1).
  1. Install the outer tie rod end (5) to the inner tie rod assembly (1). Do not tighten the jam nut.
  2. Install the outer tie rod end stud (5) to the steering knuckle (4).
  3. Install the outer tie rod end stud nut (3) to the outer tie rod end stud (5). Tighten: Tighten the nut to 20 N.m (15 lb ft) to seat the stud. Turn the nut an additional 160 degrees. Check for the outer tie rod end stud nut for a minimum final torque of 45 N.m (33 lb ft).
  4. Install the tire and wheel assemblies. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
  5. Lower the vehicle.
  6. Adjust the front wheel toe. Refer to «Front Toe Adjustment»(/cadillac/xlr/i-2003-2009/remont/wheel-alignment/#wheel-alignment-system__front-toe-adjustment) .

J 22610 Keystone Clamp Pliers

  1. Remove the outer tie rod. Refer to «Rack and Pinion Outer Tie Rod End Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  2. Remove the nut (5) from the inner tie rod assembly.
  3. Remove the tie rod clamp (4).
  4. Use side cutters to remove the boot clamp (2).
  5. Discard the boot clamp.
  6. Remove the rack and pinion boot (3).
  1. Install the new boot clamp (2) onto the rack and pinion boot (3).
  2. Apply grease to the inner rod (2) and apply grease to the gear assembly (1) prior to the boot (3) installation.
  3. Install the boot (3) onto the inner tie rod assembly.
  4. Install the boot (3) onto the gear assembly (1) until the boot is seated in the gear assembly groove.
  5. Install the boot clamp on the boot (1) using tool J 22610 (2).
  6. Crimp the boot clamp (2).
  7. Install the tie rod end clamp on the boot using pliers.
  8. Install the jam nut to the inner tie rod assembly.
  9. Install the outer tie rod. Refer to «Rack and Pinion Outer Tie Rod End Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

J 34028 Inner Tie Rod Wrench. See Special Tools .

  1. Raise the vehicle. Support the vehicle with suitable safety stands.
  2. Remove the tire and wheel assembly from the vehicle. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
  3. Remove the rack and pinion boot. Refer to «Rack and Pinion Boot Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) . NOTE: Do not change the rack bearing preload adjustment before removing the inner tie rod from the steering rack. This could cause damage to the pinion or the steering rack or both.
  4. Remove the shock dampener (2) from the inner tie rod (5).
  5. Slide the shock dampener (2) back onto the rack (1). IMPORTANT: Do not hold the steering rack while removing the inner tie rod if the preload adjustment has not been changed.
  6. Remove the inner tie rod (5) from the rack assembly (1) as follows: Place a wrench on the flats of the inner tie rod housing (4) Rotate the inner tie rod housing (4) counterclockwise until the inner tie rod (5) separates from the rack.
  7. Remove the old LOCTITE® from the threads (2) of the rack (1) and the inner tie rod (3).
  1. Apply LOCTITE® 262 (or equivalent) to the inner tie rod threads (2).
  2. Install the inner tie rod (3) to the rack and pinion (1).
  3. Install a torque wrench (5) to the J 34028 to tighten the inner tie rod. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__special-tools) . Hold the rack (3) while tightening the tie rod (4) as shown. Tighten: Tighten the inner tie rod (6) to 100 N.m (74 lb ft).
  4. Slide the shock dampener (2) over the inner tie rod housing (3) until the front lip of the shock dampener bottoms out against the inner tie rod housing.
  5. Install the rack and pinion boot. Refer to «Rack and Pinion Boot Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  6. Install the tire and wheel assembly to the vehicle. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
  7. Remove the safety stands.
  8. Lower the vehicle.
  9. Check the wheel alignment. Refer to «Wheel Alignment Measurement»(/cadillac/xlr/i-2003-2009/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-measurement) .
  1. Place a drain pan under the vehicle.
  2. Remove the clamp retaining the outlet hose to the power steering pump.
  3. Remove the clamp retaining the outlet hose to the power steering reservoir.
  4. Remove the outlet hose from the vehicle.
  1. Install the outlet hose to the power steering reservoir.
  2. Install the outlet hose to the power steering pump.
  3. Install the outlet hose retaining clamps.
  4. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  1. Remove the power steering pump from the bracket. Refer to «Power Steering Pump Replacement (RPO LH2)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) or «Power Steering Pump Replacement (RPO LC3)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  2. Raise the vehicle on a hoist. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  3. Remove the power steering pressure hose from the power steering pump.
  4. Remove the power steering pressure hose from the power steering gear.
  5. Remove the power steering pressure hose from the vehicle.
  1. Install the power steering pressure hose to the vehicle.
  2. Install the power steering pressure hose to the power steering gear. Tighten: Tighten the fitting to 27 N.m (20 lb ft).
  3. Install the power steering pressure hose to the power steering pump. Tighten: Tighten the fitting to 27 N.m (20 lb ft).
  4. Lower the vehicle.
  5. Install the power steering pump to the bracket. Refer to «Power Steering Pump Replacement (RPO LH2)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) or «Power Steering Pump Replacement (RPO LC3)»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  6. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

Scheme 6

Scheme 6: Power Steering Return Hose Replacement (Power Steering Gear to Cooler)
Scheme 6: Power Steering Return Hose Replacement (Power Steering Gear to Cooler)
CalloutComponent Name
Preliminary Procedure: Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
1Retaining Clip Tip: Disconnect the return hose at the cooler.
2Line Fitting - Power Steering Return Hose NOTE: Refer to Fastener Notice . Tighten: 27 N.m (29 lb ft)
3Power Steering Return Hose Tip: Bleed the Power Steering System. Refer to Power Steering System Bleeding .
NOTE
Refer to Fastener Notice .

Power Steering Return Hose Replacement (Power Steering Gear to Cooler)

  1. Remove the air cleaner assembly. Refer to «Air Cleaner Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
  2. Remove the fuel injector sight shield. Refer to «Intake Manifold Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) or «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
  3. Compress the clamp and disconnect the power steering return hose from the power steering reservoir.
  4. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  5. Remove the retaining clip (1) and disconnect the power steering return hose from the cooler.
  6. Remove the 2 power steering return hose routing bolts.
  7. Remove the power steering return hose from the vehicle.
  1. Position the power steering return hose to the vehicle.
  2. Install the 2 power steering return hose routing bolts. Tighten: Tighten the 2 power steering return hose mounting bolts to 11 N.m (97 lb in).
  3. Connect the power steering return hose to the cooler and install the retaining clip (1).
  4. Lower the vehicle.
  5. Compress the clamp and connect the power steering return hose to the power steering reservoir.
  6. Install the fuel injector sight shield. Refer to «Intake Manifold Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) or «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
  7. Install the air cleaner assembly. Refer to «Air Cleaner Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
  8. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

J 33432-A Leaf Spring Compressor

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the tires and wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
  3. Disconnect the tie rod ends from the steering knuckles. Refer to «Rack and Pinion Outer Tie Rod End Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  4. Disconnect the intermediate shaft from the power steering gear. Refer to «Intermediate Steering Shaft Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
  5. Remove the stabilizer shaft. Refer to «Stabilizer Shaft Replacement»(/cadillac/xlr/i-2003-2009/remont/suspension-front/#front-suspension-system) .
  6. Remove the power steering pressure and return hoses from the power steering gear.
  7. Remove the power steering line hold-downs from the crossmember.
  8. Remove the brake pressure modulator valve (BPMV) bracket. Refer to «Brake Pressure Modulator Valve Bracket Replacement»(/cadillac/xlr/i-2003-2009/remont/anti-locktraction-control/#antilock-brake-system-with-traction-control-system-stability-control-system) .
  9. Remove the two front crossmember mounting nuts.
  10. Using hand tools only, LOOSEN, Do Not Remove, the two rear crossmember mounting nuts 10 mm (0.394 inch).
  11. Disconnect the height sensor arm to the control arm.
  12. Use a utility stand to support the front of the crossmember.
  13. Using the J 33432-A , by compressing the coil spring, it will allow the crossmember to lower enough to properly remove the gear.
  14. Remove the lower shock mounting bolts.
  15. Remove the brake pipe bracket for the left front brake caliper from the crossmember.
  16. Remove the plastic brake pipe hold-down for the right front brake pipe.
  17. Remove the power steering gear mounting bolts (3) and nuts (2).
  18. Maneuver the power steering gear around the brake lines (1) from the vehicle through the left wheelhouse opening.
  1. Install the power steering gear (1) into the vehicle through the left wheelhouse opening.
  2. Install the power steering gear mounting bolts (3) and nuts (2). Tighten: Tighten the nuts to 100 N.m (74 lb ft).
  3. Install the lower shock mounting bolts. Refer to «Shock Absorber Replacement (W/F55)»(/cadillac/xlr/i-2003-2009/remont/suspension-front/#front-suspension-system__shock-absorber-replacement-wf55) .
  4. Raise the crossmember by the utility stand and remove J 33432-A .
  5. Install all of the crossmember mounting nuts. Tighten: Tighten the nuts, using hand tools only, to 110 N.m (81 lb ft).
  6. Install the brake pipe bracket for the left front brake caliper to the crossmember.
  7. Install the plastic brake pipe hold-down for the right front brake pipe.
  8. Install the brake BPMV bracket. Refer to «Brake Pressure Modulator Valve Bracket Replacement»(/cadillac/xlr/i-2003-2009/remont/anti-locktraction-control/#antilock-brake-system-with-traction-control-system-stability-control-system) .
  9. Install the power steering pressure hose to the power steering gear. Tighten: Tighten the fittings to 27 N.m (20 lb ft).
  10. Install the power steering return hose to the power steering gear. Tighten: Tighten the fittings to 27 N.m (20 lb ft).
  11. Install the power steering hold-downs to the crossmember.
  12. Install the stabilizer shaft to the crossmember. Refer to «Stabilizer Shaft Replacement»(/cadillac/xlr/i-2003-2009/remont/suspension-front/#front-suspension-system) .
  13. Connect the intermediate shaft to the power steering gear. Refer to «Intermediate Steering Shaft Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
  14. Connect the height sensor arm to the control arm.
  15. Connect the tie rod ends to the steering knuckles. Refer to «Rack and Pinion Outer Tie Rod End Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  16. Install the tires and wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
  17. Lower the vehicle.
  18. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  19. Adjust the front wheel toe. Refer to «Front Toe Adjustment»(/cadillac/xlr/i-2003-2009/remont/wheel-alignment/#wheel-alignment-system__front-toe-adjustment) .

Steering Gear Rack Bearing Preload Adjustment - Off Vehicle (Magnasteer)

  1. Loosen the adjuster plug lock nut (1).
  2. Turn the adjuster plug clockwise until the adjuster plug bottoms in the gear assembly.
  3. Turn the adjuster plug back 50 degrees to 70 degrees (approximately one flat).
  4. Install the adjuster plug lock nut (1) to the adjuster plug. Tighten: Hold the adjuster plug stationary while tightening the adjuster plug lock nut (1) to 68 N.m (50 lb ft).

J 22610 Keystone Clamp Pliers

Disassembly Procedure

  1. To remove the outer tie rod; refer to «Rack and Pinion Outer Tie Rod End Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  2. Remove the hex jam nut (2) from the inner tie rod assembly (1).
  3. Remove the tie rod end clamp (2) from the rack and pinion boot (1).
  4. Remove the boot clamp (1) from the rack and pinion boot with side cutters.
  5. Discard the boot clamp (1).
  6. Remove the rack and pinion boot (1) from the rack and pinion gear assembly.

Assembly Procedure

  1. Install the new boot clamp (2) onto the rack and pinion boot (1).
  2. Prior to rack and pinion boot installation, apply grease to the inner tie rod assembly (2) and the rack and pinion gear assembly (1).
  3. Install the rack and pinion boot (3) onto the inner tie rod assembly (2).
  4. Install the rack and pinion boot onto the gear assembly (1) until the rack and pinion boot (3) is seated in the gear assembly groove.
  5. Install the boot clamp (1) on the rack and pinion boot (2) with J 22610 .
  6. Crimp the boot clamp (1).
  7. Pinch the pliers together on the rack and pinion boot (2) in order to install the tie rod end clamp.
  8. Install the hex jam nut (2) to the inner tie rod assembly (1).
  9. To assemble the outer tie rod assembly; refer to «Rack and Pinion Outer Tie Rod End Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

J 34028 Inner Tie Rod Wrench. See Special Tools .

  1. To remove the rack and pinion boot. Refer to «Steering Gear Boot Replacement - Off Vehicle»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  2. Place the gear in a vise.
  3. Remove the shock dampener (6) from the inner tie rod housing (4).
  4. Slide the shock dampener (6) back on the rack (5).
  5. Place a pipe wrench on the rack (5) next to the inner tie rod housing (4).
  6. Place a wrench on the flats of the inner tie rod housing (4).
  7. Rotate the inner tie rod housing (4) counterclockwise, while holding the rack stationary, until the inner tie rod separates from the rack (5).
  8. Remove the shock dampener (3) from the inner tie rod housing (2).
  9. Slide the shock dampener (3) back on the rack (5).
  10. Place a pipe wrench on the rack.
  11. Place a wrench on the flats of the inner tie rod housing (2).
  12. Rotate the inner tie rod housing (2) counterclockwise, while holding the rack stationary, until the inner tie rod (1) separates from the rack (5).
  13. If female rack (1) and male inner tie rod (3), remove the old LOCTITE® from the threads (2) of the inner tie rod (3) and the rack (1). If male rack (5) and female inner tie rod (4) LOCTITE® will not be present.
  1. Slide the shock dampener (4) forward onto the rack (3).
  2. If female rack (3) and male inner tie rod (2), apply LOCTITE® 262, or equivalent, to the inner tie rod threads.
  3. Attach the inner tie rod onto the rack (3).
  4. Place a pipe wrench on the rack (3) next to the inner tie rod housing (2).
  5. Place a torque wrench and J 34028 on the flats of the inner tie rod housing (2). See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__special-tools) . Tighten: Tighten the inner tie rod to 100 N.m (74 lb ft).
  6. Slide the shock dampener (2) forward onto the rack.
  7. If female rack and male inner tie rod (1), apply LOCTITE® 262, or equivalent, to the inner tie rod threads.
  8. Attach the inner tie rod (1) onto the rack.
  9. Place a pipe wrench on the rack next to the inner tie rod housing (4).
  10. Place a torque wrench and J 34028 on the flats of the inner tie rod housing (7). See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system__special-tools) . Tighten: Tighten the inner tie rod to 100 N.m (74 lb ft).
  11. Place the inner tie rod assembly (2) in a vise.
  12. Stake both sides of the female inner tie rod assembly housing to the male rack (1).
  13. Insert a 0.25 mm gage (1) between the rack (2) and the inner tie rod housing in order to check both stakes. The feeler gage (1) must not pass between the rack and the housing stake.
  14. Slide the shock dampener (2) over the inner tie rod housing (3) until the front lip of the shock dampener (2) bottoms against the inner tie rod housing (3).
  15. To assemble the rack and pinion boot. Refer to «Steering Gear Boot Replacement - Off Vehicle»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
  1. Loosen both cylinder line fittings (1) on the cylinder end of the gear assembly.
  2. Loosen both fittings on the cylinder line assemblies (3) at the valve end of the gear assembly.
  3. Remove both cylinder line assemblies (1) from the rack and pinion gear assembly (2).
  4. Remove the O-ring seals (1) from the valve end of line.
  5. Discard the O-ring seals (1).
  1. Inspect the cylinder lines (1) for the following items: Cracks Dents Damage to the threads
  2. Replace the parts as needed.
  3. Install the new O-ring seals (1) to the valve end of the cylinder lines.
  4. Install the cylinder line assemblies (1) to the gear assembly (2). Tighten Tighten the valve end fittings to 17 N.m (13 lb ft). Tighten the cylinder end fittings to 27 N.m (20 lb ft).

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.

Special Tools

Special Tools Illustration Tool Number/ Description J 22610 Keystone Clamp Pliers J 25033-C Pulley Installer J 25034-C Pulley Remover J 33432-A Leaf Spring Compressor J 34028 Inner Tie Rod Wrench J 39570 Chassis Ear J 42188 Ball Joint Separator J 44721 Power Steering Analyzer

Scheme 7

Scheme 7: Special Tools
Scheme 7: Special Tools

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10

Scheme 11

Scheme 11
Scheme 11

See also:
• Diagnostic Starting Point - Variable Effort Steering
• Steering Wheel in the Full Turn Position Notice
• Drive Belt Replacement
• Diagnostic Starting Point - Suspension General Diagnosis
• Intermediate Steering Shaft Replacement
• Fluid and Lubricant Recommendations
• Lifting and Jacking the Vehicle
• Air Cleaner Assembly Replacement
• Intake Manifold Sight Shield Replacement
• Fastener Notice
• Air Cleaner Assembly Replacement
• Tire and Wheel Removal and Installation
• Front Toe Adjustment
• Wheel Alignment Measurement
• Stabilizer Shaft Replacement
• Brake Pressure Modulator Valve Bracket Replacement
• Shock Absorber Replacement (W/F55)
• Power Steering System Description and Operation (w/o Electro-Hydraulic Steering)
• Power Steering Fluid Leaks
• Checking and Adding Power Steering Fluid
• Steering Effort Hard or Too Easy in One or Both Directions
• Special Tools
• Power Steering Pump Specifications
• Fastener Tightening Specifications
• Steering Gear Rack Bearing Preload Adjustment - Off Vehicle (Magnasteer)
• Power Steering Pump Pulley Replacement (RPO LH2)