ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 008-006   Coolant Filter

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.

NOTE: Some engine models do not require coolant filters.

Remove the coolant system pressure cap.

Turn the shutoff valve to the OFF position by rotating the knob from the vertical to the horizontal position, as shown.

WARNING  A small amount of coolant can leak when servicing the coolant filter with the shutoff valve in the OFF position. To reduce the possibility of personal injury, avoid contact with hot coolant.

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

Remove and discard the coolant filter.

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.

NOTE: It is possible that some marine engine models do not have coolant filters.

Remove the coolant system pressure cap.

Turn the inlet and outlet shutoff valves to the OFF position by rotating the knobs from the horizontal to the vertical direction as shown.

WARNING  A small amount of coolant can leak when servicing the coolant filter with the shutoff valve in the OFF position. To reduce the possibility of personal injury, avoid contact with hot coolant.

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

CAUTION  Use caution when draining coolant that coolant is not spilled or drained into the bilge area. Do not pump the coolant overboard. If the coolant is not reused, it must be discarded in accordance with local environmental regulations.

Remove and discard the coolant filter.

CAUTION  Do not allow oil to get into the filter. Oil will damage the DCA.

CAUTION  Mechanical over tightening can distort the threads or damage the filter head.

Apply a thin film of lubricating oil to the gasket sealing surface before installing the new coolant filter.

Install the coolant filter on the filter head. Tighten the filter until the gasket contacts the filter head surface.

Tighten the coolant filter an additional 1/2 to 3/4 of a turn, or as specified by the filter manufacturer.

See Section V for coolant filter recommendations.

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

Turn the shutoff to the ON position by rotating the knob from the horizontal to the vertical position, as shown.

Install the coolant system pressure cap.

Operate the engine and check for coolant leaks.

After the air has been purged from the system, check the coolant level again.

CAUTION  Do not allow oil to get into the filter. Oil will damage the DCA.

CAUTION  Mechanical over tightening can distort the threads or damage the filter head.

Apply a thin film of lubricating oil to the gasket sealing surface before installing the new coolant filter.

Install the coolant filter on the filter head. Tighten the filter until the gasket contacts the filter head surface.

Tighten the coolant filter an additional 1/2 to 3/4 of a turn, or as specified by the filter manufacturer.

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

Turn the shutoff valves to the ON position by rotating the knobs from the vertical to the horizontal position in the directions shown.

Install the coolant system pressure cap.

Operate the engine and check for coolant leaks.

After the air has been purged from the system, check the coolant level again.