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

Notice: Refer to Fastener Notice in the Preface section.

Tighten
9 N·m (80 lb in)

2

Auxiliary Heater Coolant Pump

Tip
Disconnect electrical connection.