GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1998 🢒 Isuzu MD Steel Tilt (F Model) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Receiver Dehydrator and Evaporator Hose Assembly

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cables. Refer to Battery Replacement in Engine Electrical.
  2. Open the hood.
  3. Secure the hood.
  4. Discharge and recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging .
  5. Remove the low pressure hose at the A/C evaporator.
  6. Remove the O-ring seal.

    7. Discard the O-ring seal.

  7. Remove the high pressure hose at the A/C evaporator.
  8. Remove the O-ring seal.

    9. Discard the O-ring seal.


    Object Number: 229705 Size: SH
  9. Remove the following components from the bracket stud:
    10. • The A/C evaporator bracket nut
    • The A/C evaporator hose bracket

    Object Number: 229714 Size: SH
  10. Remove the following components from the A/C evaporator hoses:
    11. • The hose clamp nut
    • The washer
    • The bolt
    • The A/C evaporator hose clamp

    Object Number: 229717 Size: SH
  11. Remove the low pressure hose at the A/C receiver/dryer or dehydrator.
  12. Remove the O-ring seal.

    13. Discard the O-ring seal.

  13. Remove the high pressure hose at the A/C condenser.
  14. Remove the O-ring seal.

    15. Discard the O-ring seal.

Installation Procedure

    Object Number: 229705 Size: SH
  1. Coat the new O-ring seal with R-134a Swash Plate P/N AIPDN 2-90188-300-0 refrigerant oil.
  2. Install the new O-ring seal into A/C condenser end of the evaporator hose.
  3. Fill the refrigerant hoses. Refer to Refrigerant Oil Distribution Specifications .

    4. 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.

  4. Install the high pressure hose to the A/C condenser.

    5. Tighten
    Tighten the A/C evaporator high pressure hose fitting at the condenser to 18 N·m (14 lb ft).


    Object Number: 229714 Size: SH
  5. Coat the new O-ring seal with R-134a Swash Plate P/N AIPDN 2-90188-300-0 refrigerant oil.
  6. Install the new O-ring seal into the A/C evaporator end of the A/C evaporator hose.
  7. Connect the low pressure hose to the A/C evaporator.

    8. Tighten
    Tighten the A/C evaporator low pressure hose fitting at the A/C evaporator to 32 N·m (24 lb ft).

  8. Coat the new O-ring seal with R-134a Swash Plate P/N AIPDN 2-90188-300-0 refrigerant oil.

    9. Object Number: 229717 Size: SH
  9. Install the new O-ring seal into the A/C evaporator end of the A/C evaporator hose.
  10. Install the high pressure hose to the A/C evaporator.
  11. Install the A/C evaporator hose clamps to the A/C evaporator. Secure the clamps with the washer, the bolt and the nut.

    12. Tighten
    Tighten the A/C evaporator hose clamp nut to 30 N·m (22 lb ft).

  12. Install the A/C evaporator hose bracket to the A/C evaporator hose bracket stud. Secure the hose bracket with the nut.

    13. Tighten
    Tighten the A/C evaporator hose bracket nut to 30 N·m (22 lb ft).

  13. Connect the negative battery cables.
  14. Close the hood.