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HVAC Systems - Alternative Fuel Chevrolet Chevy Express G2500

Automatic HVAC System 2 illustrations ~485 words

Tools Required

J 39529 Heater Hose Pliers

Scheme 1

Scheme 1: Removal Procedure
Scheme 1: Removal Procedure
  1. Remove the bolt from coolant recovery reservoir.
  2. Set aside the coolant recovery reservoir.
  3. Partially drain the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling in the G/H Van Service Manual.
  4. Remove the heater inlet hose clamps (4, 8) from the high pressure regulator (HPR) tee fitting (7) using the J 39529 .
  5. Disconnect the heater inlet hoses (4, 8) from the fitting (7).
  6. Remove the heater hose clamp at the heater pipe fitting using the J 39529 .
  7. Remove the heater hose clamp at the engine fitting using the J 39529 .
  8. Remove the heater hoses from the vehicle.

Scheme 2

Scheme 2: Installation Procedure
Scheme 2: Installation Procedure
  1. Route the heater inlet hose assembly between the engine fitting (4) and the heater pipe fitting (8).
  2. Clamp the heater inlet hose at the engine and heater pipe fittings using the J 39529 .
  3. Cut the heater hose to the correct length and install the HPR tee fitting (7).
  4. Clamp the heater hoses (4, 8) at the HPR tee fitting (7) using the J 39529 .
  5. Ensure the heater hoses (2) are oriented correctly.
  6. Position the coolant recovery reservoir and install the mounting bolt. Tighten: Tighten the bolt to 11 N.m (97 lb in).
  7. Fill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling in the G/H Van Service Manual.
  8. Verify that the system has no leaks.

J 39529 Heater Hose Pliers

Removal Procedure

  1. Remove the bolt from coolant recovery reservoir.
  2. Set aside the coolant recovery reservoir.
  3. Partially drain the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling in the G/H Van Service Manual.
  4. Remove the heater outlet hose clamps (3, 6) from the high pressure regulator (HPR) tee fitting (5) using the J 39529 .
  5. Disconnect the heater outlet hoses (3, 6) from the fitting (5).
  6. Remove the heater hose clamp at the heater pipe fitting using the J 39529 .
  7. Remove the heater hose clamp at the engine fitting using the J 39529 .
  8. Remove the heater hoses from the vehicle.

Installation Procedure

  1. Route the heater outlet hose assembly between the engine fitting (3) and the heater pipe fitting (6).
  2. Clamp the heater outlet hose at the engine and heater pipe fittings using the J 39529 .
  3. Cut the heater hose to the correct length and install the HPR tee fitting (5).
  4. Clamp the heater hoses (3, 6) at the HPR tee fitting (5) using the J 39529 .
  5. Ensure the heater hoses (2) are oriented correctly.
  6. Position the coolant recovery reservoir and install the mounting bolt. Tighten: Tighten the bolt to 11 N.m (97 lb in).
  7. Fill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling in the G/H Van Service Manual.
  8. Verify that the system has no leaks.

Special Tools

Special Tools Illustration Tool Number/Description J 39529 Heater Hose Pliers

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