ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 008-009   Coolant Filter Valve

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.
• Remove the coolant filter head. Refer to Procedure 008-007 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 engine coolant. Refer to Procedure 008-018 in Section 8.
• Remove the coolant filter inlet and outlet hoses.
• Remove the hose fittings from the shutoff valves.
• Remove the coolant filter head, if necessary. Refer to Procedure 008-007 in Section 8.

Loosen the shutoff valve screw from the end of the valve.

Remove the two pieces of the shutoff valve from both sides of the valve bore.

Remove the shutoff valves from the filter head.

Inspect the coolant filter valves and filter head for corrosion, cracks, and damaged threads.

Make sure the valves will fully open and close.

Replace the shutoff valve o-rings.

Lubricate the o-rings before installing the valve pieces back into the bore.

Tighten the shutoff valve screw to tighten the two pieces of the valve together.

Install the shutoff valves to the 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.

• Install the coolant filter head on the engine. Refer to Procedure 008-007 in Section 8.
• 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 TMC RP329 or TMC RP330 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 filter head, if removed. Refer to Procedure 008-007 in Section 8.
• Install the coolant hose connections to the inlet and outlet valves.
• Connect the coolant inlet and outlet lines and tighten the hose connections.
• 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 TMC RP329 or TMC RP330 specifications. Refer to Procedure 008-018 in Section 8.
• Operate the engine and check for leaks.