Thermostat: Service and Repair

Thermostat Replacement (RPO L26)

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure




1. Remove the intake manifold cover.
2. Partially drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (Vac-N-Fill).
3. Using J 38185 reposition the hose clamp at the thermostat housing.
4. Remove the radiator inlet hose from the thermostat housing.




5. Remove the thermostat housing bolts and housing.




6. Remove the thermostat.
7. Inspect and clean the thermostat housing mating surfaces.

Installation Procedure




1. Install the thermostat.





Notice: Refer to Fastener Notice.

2. Install the thermostat housing and bolts.

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




3. Install the radiator inlet hose to the thermostat housing.
4. Using J 38185 position the hose clamp at the thermostat housing.
5. Fill the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (Vac-N-Fill).
6. Install the intake manifold cover.