Heater Inlet Pipe Replacement LX9

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
3. Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .



4. Disconnect the inlet heater hose (1) from the inlet pipe (2).



5. Remove the heater inlet pipe nut.
6. Remove the inlet pipe from the thermostat housing.
7. Remove and discard the O-ring seal.

1. Install a new O-ring seal on the inlet pipe.
2. Install the inlet pipe to the thermostat housing.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the heater inlet pipe nut.

Tighten
Tighten the nut to 25 N·m (18 lb ft).




4. Connect the inlet heater hose (1) to the inlet heater pipe (2).
5. Install the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .
6. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
7. Fill the coolant. Refer to Cooling System Draining and Filling .