GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2002 🢒 Isuzu T-Series (Truck Line C) 🢒 Brakes 🢒 Air Compressor 🢒 Air Compressor Replacement

Removal Procedure
  1. Apply the parking brake.
  2. Block the vehicle wheels.
  3. Tilt the cab. Refer to Cab Tilting in General Information.
  4. Drain all of the air reservoirs. Refer to Draining Reservoirs in Air Brakes.
  5. Drain the coolant to below the level of the air compressor. Refer to Cooling System Draining and Filling in Engine Cooling.

    6. Object Number: 220834 Size: SH
  6. Remove the nut and the air discharge line at the air compressor.

    7. Object Number: 200515 Size: SH
  7. Remove the governor air line at the air compressor. Refer to Air Compressor Governor Valve Replacement .

    8. Object Number: 220845 Size: SH
  8. Remove the air inlet hose.

    9. Object Number: 220846 Size: SH
  9. Remove the coolant inlet hose at the air compressor.

    10. Object Number: 220847 Size: SH
  10. Remove the coolant outlet hose.

    11. Object Number: 220851 Size: SH
  11. Remove the oil supply hose and the clip at the air compressor.
  12. Remove the power steering pump. Refer to Power Steering Pump Replacement in Power Steering System.

    13. Object Number: 200521 Size: SH
  13. Remove the air compressor flange mounting bolts and the washers.

    14. Object Number: 200522 Size: SH
  14. Remove the air compressor mounting bracket bolts and the washers.
  15. Remove the air compressor.
  16. Remove the gasket from the air compressor.
  17. Clean the exterior of the air compressor.

    18. Object Number: 200521 Size: SH
  18. Inspect the air compressor crankcase for cracks or damage.
  19. Inspect the air compressor mounting flange for cracks or damage.

    20. Object Number: 200522 Size: SH
  20. Inspect the air compressor bracket for cracks or damage.

    21. Object Number: 220851 Size: SH
  21. Inspect the oil supply hose. Replace the oil supply hose if there is damage or leaking.

    22. Object Number: 220846 Size: SH
  22. Inspect the coolant inlet hoses. Replace the inlet coolant hoses if there is damage or leaking.

    23. Object Number: 220847 Size: SH
  23. Inspect the coolant outlet hoses. Replace the coolant outlet hoses if there is damage or leaking.

Installation Procedure

    Object Number: 200522 Size: SH
  1. Install the new air compressor flange gasket.
  2. Install the air compressor.

    3. Object Number: 200521 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the air compressor mounting flange washers and the bolts.

    4. Tighten
    Tighten the air compressor mounting flange bolts to 100 N·m (74 lb ft).


    Object Number: 200522 Size: SH
  4. Install the air compressor mounting bracket washers and the bolts.
  5. Finger tighten the air compressor mounting bracket bolts before torquing the bolts to specifications.

    6. Tighten
    Tighten the air compressor mounting bracket bolts to 73 N·m (54 lb ft).


    Object Number: 220851 Size: SH
  6. Install the power steering pump. Refer to Power Steering Pump Replacement in Power Steering System.
  7. Install the oil supply hose.

    8. Tighten

        • Tighten the oil supply hose nut to 30 N·m (22 lb in).
        • Tighten the oil supply hose clip bolt to 67 N·m (49 lb ft).

    Object Number: 220847 Size: SH
  8. Install the coolant outlet hose at the air compressor.

    9. Tighten
    Tighten the coolant outlet line eye bolt nut to 41 N·m (30 lb ft).


    Object Number: 220846 Size: SH
  9. Install the coolant inlet line at the air compressor.

    10. Tighten
    Tighten the coolant inlet line eye bolt to 41 N·m (30 lb ft).


    Object Number: 220845 Size: SH
  10. Install the air inlet hose.

    11. Tighten
    Tighten the air inlet hose clamp to 2.75 N·m (24 lb in).


    Object Number: 200515 Size: SH
  11. Install the governor air line at the air compressor.

    12. Object Number: 220834 Size: SH
  12. Install the nut and the air discharge line at the air compressor.

    13. Tighten
    Tighten the air discharge line nut to 63 N·m (46 lb ft).

  13. Fill the engine cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  14. Fill the engine oil. Refer to Fluid and Lubricant Recommendations in General Information.
  15. Lower the cab. Refer to Cab Tilting in General Information.
  16. Check for any air leaks. Refer to Air Brake System Testing in Air Brakes.
  17. Check for proper brake operation.
  18. Remove the wheel blocks.