ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 010-108   Air Intake Manifold Cover

Disconnect the cold starting aid.

Remove the air crossover tube. Refer to Procedure 010-019.

Disconnect the air inlet connection, if equipped. Refer to Procedure 010-022.

Remove the air intake connection. Refer to Procedure 010-080.

Remove the injector supply lines, if required. Refer to Procedure 006-051.

Remove the turbocharger control valve, if equipped. Refer to Procedure 019-388 in Troubleshooting and Repair Manual, CM870 Electronic Control System, ISC and ISL Engines, Bulletin 4021416.

Some engines have a grid heater mounted on top of the intake manifold cover. Remove the grid heater, if equipped. Refer to Procedure 010-029.

Remove the mounting capscrews and the intake cover.

Tape off the intake manifold opening to prevent debris from entering the intake system.

NOTE: Be sure not to tape over the entire manifold edges so that the surface can be cleaned.

Clean the sealing surfaces.

NOTE: Keep the gasket material and any other material out of the air intake.

Remove the tape.

Inspect the intake manifold for cracks or other damage.

NOTE: When inspecting the intake manifold for oil or debris from an air system failure, also inspect the cylinder head for oil and debris.

Install the cover with intake air heater (if equipped) and a new gasket.

NOTE: Some capscrews are shared with fuel line braces on some engines.

Install the grid heater, if equipped. Refer to Procedure 010-029.

Install the injector supply lines, if removed. Refer to Procedure 006-051.

Install the air intake connection. Refer to Procedure 010-080.

Install the air inlet connection, if used. Refer to Procedure 010-022.

Install the turbocharger control valve, if equipped. Refer to Procedure 019-388 in Troubleshooting and Repair Manual, CM870 Electronic Control System, ISC and ISL Engines, Bulletin 4021416.

Install the air crossover tube. Refer to Procedure 010-019.

Connect the cold starting aid.

Operate the engine and check for leaks.