Thermostat: Service and Repair

Removing And Installing/replacing Coolant Thermostat (COOPER S)

Warning: Danger of scalding!

Work on the cooling system should only be carried out when the engine has cooled down.





Remove coolant pressure cap from expansion tank.

Remove intake filter housing.

Drain coolant.

Remove MAP sensor connector (1).

Remove MAP sensor bracket bolts (2).
Thermostat to cylinder head
M6 12 Nm





Remove heater hose (1).

Remove top hose (2) from thermostat housing.

Remove retaining bolt (3) and remove thermostat housing (4).





Remove thermostat and gasket from housing.

Note:
location of bleeding pin (1).
Direction of installation (2).





Replace gasket and thermostat if necessary.

1. Thermostat to seal locating lugs.
2. Basic location of thermostat to seal lug.

Refill coolant.