Inlet Hose

REMOVAL

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

1. Drain the engine cooling system.
2. Remove clamps from the cabin 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 cabin heater air intake muffler connection.

Cabin Heater Flexible Air Intake Line:

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

Cabin Heater 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 cabin heater air intake muffler and install and tighten the retaining clamp securely.
4. Install the cabin 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.