M11 Series – Service Manual – 008-012   Coolant Heater Housing

WARNING  Coolant is toxic. Keep children and pets away. If the coolant is not going to be reused, dispose of it in accordance with federal, state, and local regulations.

Drain the cooling system.

Refer to Procedure 008-018.

Disconnect the electrical wiring from the cylinder block heater, if used.

Remove any additional fittings or accessories from the housing.

Remove the four mounting capscrews from the heater housing.

Remove the heater housing and gasket.

Use solvent to clean the heater housing. Dry with compressed air.

Inspect the housing for cracks or other damage.

If the housing is cracked, it

must be replaced.

Use a new gasket to install the heater housing.

Install the four mounting capscrews and tighten.

Connect the electrical wiring to the heater, if used.

Fill the cooling system.

Refer to Procedure 008-018.

Operate the engine until it reaches a temperature of 80°C [180°F]
and check for leaks.