Heater Pipes

HEATER PIPES REPLACEMENT

TOOLS REQUIRED
J 38185 Spring Hose Clamp Pliers







REMOVAL PROCEDURE
1. Remove the battery heat shield.
2. Drain the cooling system. Refer to Draining and Filling Cooling System in Cooling System.
3. Remove the intake manifold.
4. Using the J 38185, release and reposition the heater inlet and outlet hose clamps.
5. Separate the heater hoses from heater pipes.
6. Disconnect the hose clamp and hose from the RH air injection check valve.







7. Remove the RH air injection check valve to LH cylinder head bolt.
8. Remove the RH air injection check valve to RH cylinder head bolts.
9. Remove the RH air injection pipe.







10. Remove the nut retaining the heater pipe bracket to the cowl.
11. Remove the heater pipe to heater core retaining bolt.
12. Disconnect the heater pipe assembly from the heater core, allow any remaining coolant to drain, discard the seal washers and cap or plug the heater core to prevent contamination.

IMPORTANT: Be sure to cap or plug the open heater core to prevent contamination.


13. Remove the heater pipe assembly from the vehicle.







INSTALLATION PROCEDURE
1. Remove the cap or plug from the heater core.
2. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the heater pipe assembly and the heater core.
3. Lightly coat the new seal washers with coolant.
4. Carefully slide the new sealing washers onto the heater pipe assembly until seated.
5. Install the heater pipe assembly into position in the vehicle.
6. Install the heater pipe assembly to the heater core.
7. Install the heater pipe assembly retaining bolt.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the bolt to 16 N.m (12 lb ft).

8. Install the RH air injection pipe.
9. Install the RH air injection pipe to RH cylinder head bolts.

Tighten
Tighten the bolts to 20 N.m (15 lb ft).







10. Install the RH air injection check valve to LH cylinder head bolt.

Tighten
Tighten the bolt to 20 N.m (15 lb ft).

11. Connect the hose and hose clamp to the RH air injection check valve.







12. Install the heater pipe bracket into position.
13. Install the heater pipe bracket retaining nut.

Tighten
Tighten the nut to 10 N.m (89 lb in).







14. Install the heater inlet and outlet hoses to the heater pipes.
15. Using the J 38185, install the heater hose clamps.
Align the heater hose clamps as shown.

16. Install the intake manifold.
17. Install the battery heat shield.
18. Refill the cooling system. Refer to Draining and Filling Cooling System in Cooling System.