73. Engine Coolant Thermostat Housing Cleaning and Inspection

Engine Coolant Thermostat Housing Cleaning and Inspection




1. Remove the fuel return hose bracket bolt (1).
2. Remove the fuel return hose bracket (2).




3. Remove the coolant temperature sensor (1).




4. Remove the engine coolant outlet pipe bolts (1).
5. Remove the engine coolant outlet pipe (2).
6. Remove the thermostats (3) and (4).




7. Clean the thermostat housing (1).
8. Clean the thermostat housing mating surfaces.
9. Inspect the thermostat housing for cracks.
10. Inspect the thermostat housing mating surfaces for damage.
11. Replace the thermostat housing if any damage is found.




12. Install the thermostats (1) and (2).
13. Ensure that the holes (3) in thermostat (2) are orientated as shown.




14. Install the engine coolant outlet pipe (2).

Caution: Refer to Fastener Caution Fastener Caution.

15. Install the engine coolant outlet pipe bolts (1) and tighten to 25 Nm (18 lb ft).




16. Install the engine coolant temperature sensor (1) and tighten to 20 Nm (15 lb ft).




17. Install the fuel return hose bracket (2).
18. Install the fuel return hose bracket bolt (1) and tighten to 25 Nm (18 lb ft).