ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 007-024   Lubricating Oil Leaks

WARNING  Wear safety glasses or a face shield, as well as protective clothing, to prevent personal injury when using a steam cleaner or high-pressure water.

Use a steam cleaner or high-pressure washer to clean the engine.

Add fluorescent tracer, Part Number 3376891, before running the engine.

Use black light kit, Part Number 3163338, to help identify the source of an oil leak.

The tracer will be highlighted by the black light to help identify the source of the oil leak.

Operate the engine until the coolant temperature reaches 82°C [180°F]. If necessary, run the engine under load to create the conditions of the oil leak. Perform stall tests or a road test. Inspect the exterior of the engine for leaking gaskets, seals, o-rings, pipe plugs, or fittings.

NOTE: Before replacing any gaskets, check the capscrews to make sure they are tightened to the correct torque values.

Inspect the engine crankcase breather tube and hose for restriction or leaks. Refer to Procedure 003-018 in Section 3.

Check for a loose or missing oil dipstick tube, dipstick, or oil fill cap.