ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 008-007   Coolant Filter Head

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

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.

• Disconnect the batteries. Refer to Procedure 013-009 in Section 13.
• Drain the engine coolant. Refer to Procedure 008-018 in Section 8.
• Remove the coolant filter. Refer to Procedure 008-006 in Section 8.

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.

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.

• Drain the coolant. Refer to Procedure 008-018 in Section 8.
• Remove the coolant filter. Refer to Procedure 008-006 in Section 8.
• Remove the water inlet and outlet hoses from the filter head.
• Remove the water inlet and outlet valves from the filter head.

Loosen the four filter head capscrews.

Remove the filter head and gasket.

Mark the inlet and outlet sides of the filter head for correct installation.

Loosen the four filter head mounting capscrews.

Remove the filter head from the mounting bracket.

Clean the mating surfaces.

Inspect the filter head for cracks, burrs or other damage.

Replace the filter head if it is damaged.

Install a new gasket and the filter head.

Tighten the four capscrews.

NOTE: Be sure to install the filter head with the inlet and outlet in the same position as removed.

Install the filter head to the mounting bracket.

Tighten the four mounting capscrews.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

• Install the coolant filter. Refer to Procedure 008-006 in Section 8.
• Fill the cooling system with either a 50/50 mixture of good-quality water and fully formulated antifreeze or fully formulated coolant. The fully formulated antifreeze or coolant must meet ASTM D6210 (EG) and ASTM D6211 (PG) specifications. Refer to Procedure 008-018 in Section 8.
• Connect the battery. Refer to Procedure 013-009 in Section 13.
• Operate the engine and check for leaks.

• Install the coolant inlet and outlet valves to the filter head.
• Install the coolant inlet and outlet hoses and tighten the hose clamps. Refer to the OEM specification.
• Install the coolant filter. Refer to Procedure 008-006 in Section 8.
• Open the inlet and outlet valves.
• Fill the cooling system with either a 50/50 mixture of good-quality water and fully formulated antifreeze or fully formulated coolant. The fully formulated antifreeze or coolant must meet ASTM D6210 (EG) and ASTM D6211 (PG) specifications. Refer to Procedure 008-018 in Section 8.
• Operate the engine and check for leaks.