Inlet Hose

REMOVAL

NOTE: Heater air intake tube is part of an assembly that includes the heater cooling intake and return pipes. If heater air intake tube requires removal or replacement the entire assembly will require removal/replacement.

1. Drain the engine cooling system.
2. Remove clamps from the heater tubes at the lower heater port and the lower EGR connector which are located under the hood.
3. Remove the retaining clamp at the heater air intake muffler connection.

Flexible Air Intake Line:

4. Remove the clamp at the flexible tube to steel tube connection.

Air Intake And Heater Pipe Assembly:

5. Remove the two retaining screws and remove pipe assembly.

INSTALLATION
1. Install the air intake pipe assembly and install the two retaining screws. Tighten the screws to 7 N.m (62 in. lbs.).
2. Attach the steel tube to the flexible tube and position and then tighten the retaining clamp securely.
3. Install the flexible tube to the heater air intake muffler and install and tighten the retaining clamp securely.
4. Install the heater tubes to the lower heater connection and the lower EGR cooler connection and tighten the retaining clamps.
5. Lower the vehicle.
6. Refill the engine cooling system.
7. Verify function of the heater unit.