Auxiliary Cabin Heater: Service and Repair

HEATER UNIT

REMOVAL




1. Disconnect and isolate the negative battery cable.
2. Drain the engine coolant.
3. Remove the engine accessory drive belt.
4. Loosen the hose clamps and disconnect the heater hoses from the supplemental diesel engine coolant heater (2).
5. Disconnect the wire harness connector from the engine coolant heater clutch.
6. Remove the three bolts (1, 5 and 6) and the support bracket (4) that secure the diesel engine coolant heater to the mounting bracket (3).
7. Remove the diesel engine coolant heater from the engine compartment.

INSTALLATION




1. Position the supplemental diesel engine coolant heater onto the mounting bracket.
2. Install the support bracket (4) and the three bolts (1, 5 and 6) that secure the engine coolant heater to the mounting bracket. Tighten the bolts to 33 N.m (25 ft. lbs.).
3. Connect the wiring harness connector to the engine coolant heater clutch.
4. Install the heater hoses to the engine coolant heater and tighten the hose clamps securely.
5. Install the engine accessory drive belt.
6. Refill the engine cooling system.
7. Reconnect the negative battery cable.