Preliminary Procedures

1. Drain the cooling system. Refer to Cooling System Draining and Filling.
2. Remove the inlet and outlet hose clamp from the auxiliary heater pump.
3. Remove the inlet and outlet hoses from the auxiliary heater pump.

1

Auxiliary Heater Coolant Pump Screw

Caution: Refer to Fastener Caution in the Preface section.

Tighten
9 N·m (80 lb in)

2

Auxiliary Heater Coolant Pump

Procedure

Disconnect the electrical connection.