ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 007-003   Lubricating Oil Cooler

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

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  To reduce the possibility of personal injury, avoid direct contact of hot oil with your skin.

WARNING  State and federal agencies have determined that used engine oil can be carcinogenic and cause reproductive toxicity. Avoid inhalation of vapors, ingestion, and prolonged contact with used engine oil. If not reused, dispose of in accordance with local environmental regulations.

• Drain the coolant. Refer to Procedure 008-018.
• Clean the area around the lubricating oil cooler cover.
• Remove the lubricating oil filter. Refer to Procedure 007-013.
• Remove the turbocharger oil supply line. Refer to Procedure 010-046.

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

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  To reduce the possibility of personal injury, avoid direct contact of hot oil with your skin.

WARNING  State and federal agencies have determined that used engine oil can be carcinogenic and cause reproductive toxicity. Avoid inhalation of vapors, ingestion, and prolonged contact with used engine oil. If not reused, dispose of in accordance with local environmental regulations.

CAUTION  Use caution when draining oil or replacing filters that oil is not spilled or drained into the bilge area. The oil and oil filters must be discarded in accordance with local environmental regulations.

• Close the sea water supply and return valves. Refer to the OEM service manual.
• Drain the coolant. Refer to Procedure 008-018.
• Remove the heat exchanger/expansion tank assembly, if equipped. Refer to Procedure 008-053.
• Clean the area around the lubricating oil cover.
• Remove the heat exchanger coolant return connection.
• Remove the lubricating oil filter. Refer to Procedure 007-013.
• Remove the turbocharger oil supply line. Refer to Procedure 010-046.

Remove the lubricating oil cooler cover, gaskets and cooler element.

Clean the sealing surfaces of the cylinder block and the oil cooler cover.

Inspect the capscrews. If they are Grade 10.9 or higher, they can be reused.

If the capscrews are lower than Grade 10.9, they must be replaced with Grade 10.9 or higher capscrews.

Use leak test kit, Part Number 3823876, to pressure-test the lubricating oil cooler element.

NOTE: Be sure to remove the shipping plugs from a new element.

Assemble the lubricating oil cooler gaskets, element, and cooler cover.

Tighten the capscrews in the sequence shown in the illustration, in two steps. The arrow (A) points to the dimple.

• Install the turbocharger oil supply line. Refer to Procedure 010-046.
• Install the lubricating oil filter. Refer to Procedure 007-013.
• Fill the engine with coolant. Refer to Procedure 008-018.
• Operate the engine and check for leaks.
• Stop the engine and check the coolant and lubricating oil levels.

• Install the turbocharger oil supply line. Refer to Procedure 010-046.
• Install the lubricating oil filter. Refer to Procedure 007-013.
• Install the heat exchanger/expansion tank, if equipped. Refer to Procedure 008-053.
• Install the heat exchanger coolant return line.
• Fill the engine with coolant. Refer to Procedure 008-018.
• Open the sea water supply line valves. Refer to the OEM service manual.

Operate the engine and check for leaks.

Stop the engine and check the coolant and lubricating oil levels.