Thermostat: Service and Repair

Thermostat Replacement (LH2)

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

1. Drain the cooling system.
2. Remove the air outlet duct in order to gain access to the thermostat housing.




3. Remove the heater hose from the thermostat housing using a J 38185.
4. Remove the coolant radiator hose from the thermostat housing.
5. Remove the thermostat housing bolts.
6. Remove the thermostat housing with thermostat from the engine front cover.
7. Remove the thermostat and seal ring and discard the seal ring.

Installation Procedure




1. Install a new seal ring on the thermostat.
2. Install the thermostat and new seal ring into the thermostat housing.
3. Install the thermostat housing with the thermostat assembly to the engine front cover.

Notice: Refer to Fastener Notice.

4. Install the thermostat housing bolts.

Tighten the thermostat housing bolts to 10 N.m (89 lb in).

5. Position the radiator hose over to the thermostat housing and reposition the clamp using the J 38185.
6. Install the heater hose to the thermostat housing using J 38185.
7. Install the air outlet duct.
8. Fill the cooling system.