ISM, ISMe, and QSM11 – 008-012   Coolant Heater Housing

WARNING  Do not remove the pressure cap from a hot engine. Wait until the coolant temperature is below 50°C [120°F] before removing the pressure cap. Heated coolant spray or steam can cause personal injury.

WARNING  Coolant is toxic. Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.

• Drain the cooling system. Refer to Procedure 008-018 in Section 8.

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.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

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 in Section 8.
• Operate the engine until it reaches a temperature of 80°C [180°F] and check for leaks.