ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 003-013   Rocker Lever Housing

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.

NOTE: This procedure is for engines with a perimeter bolted rocker lever cover. Refer to Procedure 020-007 in Section 20.

• Disconnect the batteries. Refer to Procedure 013-009 in Section 13.
• Remove the crankcase breather tube and drain tube. Refer to Procedure 003-018 in Section 3.
• Remove the rocker lever cover. Refer to Procedure 003-011 in Section 3.
• Disconnect the injector harness pass-through connectors.
• Remove the engine brake assembly, if equipped. Refer to Procedure 020-004 in Section 20.
• Disconnect the injector wiring harness from the injector. Refer to Procedure 006-026 in Section 6.

Remove the rocker lever housing mounting capscrews.

Remove the rocker lever housing and gasket from the cylinder head.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Some solvents are flammable and toxic. Read the manufacturer’s instructions before using.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Remove the rocker lever housing gasket.

Clean the rocker lever housing with solvent.

Dry with compressed air.

Inspect the rocker lever housing for cracks or any other damage, especially on the cylinder head mounting surface.

Inspect the bridge area in the center of the rocker lever housing for cracks.

Install the 22 mm cup plugs into the rocker lever housing.

Coat contact surface of cup plug with Permatex® sealant or equivalent.

Install cup plugs flush with outer surface of the rocker lever housing.

NOTE: A new rocker lever housing gasket must be used when the rocker lever housing is removed. Do not reuse the old gasket.

Install the new rocker lever housing gasket. Start by pressing the molded gasket into the corners of the rocker lever housing then press the remaining gasket into the housing.

Install the rocker lever housing on the cylinder head.

Install the capscrews and tighten. Start with the center capscrew and work outward, in a spiral pattern.

NOTE: No capscrew goes in the outer end holes of the rocker lever housing.

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.

• Connect the injector wiring harness to the injectors. Refer to Procedure 006-026 in Section 6.
• Connect the injector harness pass through connectors.
• Install the engine brake assembly, if equipped. Refer to Procedure 020-004 in Section 20.
• Install the rocker lever cover. Refer to Procedure 003-011 in Section 3.
• Install the crankcase breather tube and drain tube. Refer to Procedure 003-018 in Section 3.
• Connect the batteries. Refer to Procedure 013-009 in Section 13.
• Operate the engine and check for leaks.