Cummins ISX11.9 CM2250 – Service Manual 008-007   Coolant Filter Head

WARNING  Do not remove the pressure cap from a hot engine. Wait until the 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 it in accordance with local environmental regulations.

• Drain the cooling system. Refer to Procedure 008-018 in Section 8.
• Remove the coolant filter. Refer to Procedure 008-006 in Section 8.

Remove the three capscrews and the filter head.

Remove the press-in-place gasket.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. 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 filter head.

Dry with compressed air.

Inspect the filter head for cracks or other damage.

Turn the control valve by hand.

If the valve does not rotate freely, remove and inspect the valve.

To remove the valve, remove the capscrew and pull the valve out of the housing.

Remove the o-ring from the valve.

Inspect the valve for corrosion or pitting.

Inspect the housing bore for corrosion or pitting.

Clean or replace the valve and housing, if necessary.

Install a new o-ring on the valve.

Lubricate the o-ring with a film of antiseize compound.

Install the valve in the filter head.

Tighten the capscrew.

Use vegetable oil to lubricate the new press-in-place gasket.

Install the press-in-place gasket on the filter head.

CAUTION  The control valve must be in the ON position to prevent engine damage.

Install the filter head.

Tighten the capscrews.

Turn the control valve to the ON position.

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

• Install the coolant filter. Refer to Procedure 008-006 in Section 8.
• Fill the cooling system. Refer to Procedure 008-018 in Section 8.
• Operate the engine to normal operating temperature and check for leaks.