Heater Core Replacement

Heater Core Replacement

Tools Required
J 38185 Hose Clamp Pliers

Removal Procedure

1. Drain the cooling system.
2. Remove the left wiper arm linkage nuts.
Reposition the left wiper arm linkage for access.
3. Disconnect the vacuum hose from the brake booster and reposition.
4. Remove the air cleaner cover and intake tube.

Important: Disconnect the throttle and cruise control cables to prevent bending the cable housings.

5. Disconnect the throttle and cruise control cables from the TBI mounting bracket.
6. Remove the transmission fluid filler tube.






7. Disconnect both of the heater hose clamps at the heater core using the J 38185.
8. Remove the heater hoses from the heater core.

Important: Cap off the heater core inlet and outlet pipes to prevent coolant spilling inside of the vehicle.

9. Cap off the heater core pipes.
10. Remove the heater core cover.






11. Remove the heater core pipe retaining clamp screw.
12. Remove the heater core from the HVAC module.

Installation Procedure

1. Install the heater core to the HVAC module.

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.






2. Install the heater core pipe retaining clamp screw.

Tighten
Tighten the screw to 1.6 Nm (14 lb in).

3. Install the heater core cover.






4. Install the heater hoses to the heater core.
5. Reposition the heater hose clamps to secure the hoses using the J 38185.
6. Install the transmission fluid filler tube.
7. Install the air cleaner cover and intake hose.
8. Connect the throttle and cruise control cables to the TBI mounting bracket.
9. Connect the vacuum hose to the brake booster.
10. Install the left wiper arm linkage.
11. Install the left wiper arm linkage nuts.

Tighten
Tighten the nuts to 5 Nm (44 lb in).

12. Fill the coolant.