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SECTION 6B

POWER STEERING PUMP

SPECIFICATIONS

General Specifications

Application
Description
Lubricant
DEXRON® II-D
Capacity
1.1 Liter (1.16 qt)
Type
Vane

Fastener Tightening Specifications

Application
N•m
Lb-Ft
Lb-In
Air Cleaner Housing Bolts
12
-
106
Alternator Adjusting Bolt
20
15
-
Power Steering Pump Pulley Bolts
25
18
-
Power Steering Pump Retaining Bolts
25
18
-
Tension Pulley Securing Bolt
25
18
-

SPECIAL TOOLS

Special Tools Table


J23600B
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J-23600-B
Belt Tension Gauge

J28467B
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J-28467-B
Engine Support
Fixture

DIAGNOSIS

Power Steering Pump Diagnosis

Foaming, Milky Power Steering Fluid, Low Fluid Level, and Possible Low Pressure

Checks
Action
Check the power steering fluid level.
Fill the power steering fluid reservoir.
Check for air contamination in the power steering fluid.
Bleed the power steering system.
Check the power steering pump for internal leaks and overflow.
Replace the power steering pump.
Check the power steering pump housing and the soft plug for leaks.
Replace the power steering pump.

Low Pressure Due to Steering Pump

Checks
Action
Check the power steering pump flow control valve for sticking and improper operation.
Replace the power steering pump.
Check the power steering pump seals for wear.
Replace the power steering pump.
Check the pressure plate, the pump ring, the thrust plate, and the rotor for scores, cracks, or breaks.
Replace the power steering pump.
Check the vanes for sticking in the rotor slots.
Replace the power steering pump.
Check the power steering pump for internal leaks and overflow.
Replace the power steering pump.

Growling Noise in Steering Pump

Checks
Action
Check the pump hoses and the steering gear pipes for restricted flow.
Clean out the pipes and the hoses. Replace the pipes and the hoses as needed.
Check the pressure plate, the pump ring, the thrust plate, and the rotor for scores, cracks, or breaks.
Replace the power steering pump.
Check the power steering hose for contact with the body.
Secure the pump hose in a clamp away from the body.
Check the power steering fluid level.
Fill the power steering pump reservoir.

Rattling Noise in the Steering Pump

Checks
Action
Check for air contamination in the power steering fluid.
Bleed the power steering system.
Check the power steering hose for contact with the body.
Secure the pump hose in a clamp away from the body.
Check the power steering fluid level.
Fill the power steering pump reservoir.
Check the pump mounting for improper installation.
Tighten the power steering pump attachment bolts.

Swishing Noise in the Steering Pump

Checks
Action
Check the power steering pump flow control valve for damage.
Replace the power steering pump.

Whining Noise in the Steering Pump

Checks
Action
Check the pressure plate and the vanes for scores.
Replace the power steering pump.
Check the pump shaft bearing for scores.
Replace the power steering pump.

MAINTENANCE AND REPAIR

ON-VEHICLE SERVICE

Pump Drive Belt

Tools Required

J-23600-B Belt Tension Gauge

Checking Belt Tension

  1. Using belt tension gauge J-23600-B, check the tension on the pump drive belt.
  2. If belt tension gauge J-23600-B does not indicate the proper tension, adjust the belt.

Adjusting Belt Tension

  1. With belt tension gauge J-23600-B on the pump drive belt, loosen the alternator adjusting bolt and move the alternator until the gauge indicates the proper tension.
  2. Tighten the alternator adjusting bolt.
  3. Tighten
    Tighten the alternator adjusting bolt to 20 N•m(15 lb-ft).



T3B16B02
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SOHC Pump Drive Pulley

Removal Procedure

  1. Loosen the steering pump pulley bolt.
  2. Remove the pump drive belt from the pulley by moving the autotensioner.
  3. Remove the steering pump pulley bolt that connect the pulley to the pump.
  4. Remove the pulley from the pump.


T3B16B03
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Installation Procedure

  1. Replace the pump on the engine if the pump was previously removed. Refer to "Pump Assembly" in this section.
  2. Install the pulley on the pump. Install the steering pump pulley bolt.
  3. Install the pump drive belt.
  4. Tighten the steering pump pulley bolt to fasten the pulley to the pump.
  5. Tighten
    Tighten the steering pump pulley bolts to 25 N•m (18 lb-ft).

  6. Adjust the belt tension. Refer to "Pump Drive Belt" in this section.
  7. If the pump was removed from the engine, bleed the power steering system. Refer to Section 6A, Power Steering System.
  8. Notice : When adding fluid or making a complete fluid change, always use DEXRON ®-III power steering fluid. Failure to use the proper fluid will cause hose and seal damage and fluid leaks.

  9. Inspect for leaks. If leaks are found, correct the cause of the leak and bleed the system.


T3B16B04
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DOHC Pump Drive Pulley

Removal Procedure

  1. Remove the air cleaner housing by removing the housing bolts and loosening the clamp.


  2. T3B16B05
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  3. Loosen the steering pump pulley bolt.
  4. Remove the pump drive belt from the pulley by moving the autotensioner.


  5. T3B16B06
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  6. Remove the steering pump pulley bolt that connect the pulley to the pump.
  7. Remove the pulley from the pump.


T3B16B05
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Installation Procedure

  1. Replace the pump on the engine if the pump was previously removed. Refer to "Pump Assembly" in this section.
  2. Install the pulley onto the pump. Install the steering pump pulley bolt.
  3. Install the pump drive belt.


  4. T3B16B06
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  5. Tighten the steering pump pulley bolt to fasten the pulley to the pump.
  6. Tighten
    Tighten the steering pump pulley bolt to 25 N•m (18 lb-ft).

  7. Adjust the belt tension. Refer to "Pump Drive Belt"in this section.


  8. T3B16B04
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  9. Install the air cleaner housing with the housing bolts and the clamp.
  10. Tighten
    Tighten the air cleaner housing bolts to 12 N•m (106 lb-in).

  11. If the pump was removed from the engine, bleed the power steering system. Refer to Section 6A, Power Steering System.
  12. Notice : When adding fluid or making a complete fluid change, always use DEXRON ®-III power steering fluid. Failure to use the proper fluid will cause hose and seal damage and fluid leaks.

  13. Inspect for leaks. If leaks are found, correct the cause of the leak and bleed the system.


T3D11C09
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SOHC/DOHC Pump Assembly

Removal Procedure

  1. Remove the air cleaner housing by removing the housing bolts and loosening the clamp.


  2. T3B16B02
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  3. Remove the pump drive belt from the pulley by moving the autotensioner.


  4. T3B16B08
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  5. Drain the power steering fluid by disconnecting the pressure and supply lines from the pump.
  6. Remove the A/C compressor and bracket. Refer to Section 7B, Manual Control Heating, Ventilation and Air Conditioning System.


  7. T3B16B09
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  8. Remove the pump assembly by removing the steering pump retaining nuts.


T3B16B09
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Installation Procedure

  1. Install the pump to the A/C compressor bracket and tighten the steering pump retaining nuts.
  2. Tighten
    Tighten the steering pump retaining nuts to 25 N•m (18 lb-ft).

  3. Install the A/C compressor bracket on the vehicle. Refer to Section 7B, Manual Control Heating, Ventilation and Air Conditioning System.


  4. T3B16B08
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  5. Connect the pressure and supply lines to the power steering pump.
  6. Install the A/C compressor on the bracket. Refer to Section 7B, Manual Control Heating, Ventilation and Air Conditioning System.


  7. T3B16B03
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  8. Install the pump drive belt onto the pulley by moving the autotensioner.


  9. T3D11C09
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  10. Install the air cleaner housing with the housing bolts and the clamp.
  11. Tighten
    Tighten the air cleaner housing bolts to 12 N•m (106 lb-in).

    Notice : When adding fluid or making a complete fluid change, always use DEXRON ®-III power steering fluid. Failure to use the proper fluid will cause hose and seal damage and fluid leaks.

  12. Refill the pump with new fluid and bleed the air from the system. Refer to Section 6A, Bleeding the Power Steering System.
  13. Inspect for leaks. If leaks are found, correct the cause of the leak and bleed the system.

UNIT REPAIR

Pump

The power steering pump in this vehicle is not serviceable. A faulty pump must be replaced.

GENERAL DESCRIPTION AND SYSTEM OPERATION

Power Steering Pump

General Description

The pump has a remote fluid reservoir. A pressure-relief valve inside the flow control valve limits pump pressure.

Seals

Seal Replacement

Lip seals, which seal the rotating shafts, are used on the driveshaft of the pump. This type of seal requires special treatment. When leakage occurs in this area, always replace the seal after inspecting and thoroughly cleaning the sealing surfaces. If the corrosion in the lip seal contact zone is slight, clean the surface of the shaft with a crocus cloth. Replace the shaft only if the leakage cannot be stopped by first smoothing the shaft with the crocus cloth.


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