Thermostat: Service and Repair

Engine Coolant Thermostat Replacement (LZ4-3.5L)

Removal Procedure





1. Remove the radiator outlet hose. Refer to Radiator Outlet Hose Replacement (LZ4-3.5L) (Service and Repair).
2. Remove wire harness clamp from thermostat housing stud (1).




3. Remove the thermostat housing bolt (1) and nut (2).
4. Remove the thermostat housing (3).
5. Remove the thermostat.



Installation Procedure





1. Install the thermostat with housing (3).

1. Install a new gasket.
2. Position the thermostat with the housing.
3. Apply thread sealant PST 565(R) to the bolt threads.

Notice: Refer to Fastener Notice (Fastener Notice) .

4. Install the housing bolt (2) and nut (1).

Tighten the thermostat housing nut and bolt to 10 N.m (89 lb in).






2. Install the wire harness clamp to the thermostat housing stud (1).
3. Install the radiator outlet hose. Refer to Radiator Outlet Hose Replacement (LZ4-3.5L) (Service and Repair).