Centinel System – Repair Manual – 002-025   Overhead Camshaft, Injector

Remove the upper gear cover. Refer to Procedure 001-079.

Remove the rocker lever cover. Refer to Procedure 003-011.

Remove the rocker lever shafts. Refer to Procedure 003-009.

Remove the injector camshaft scissor gear. Refer to Procedure 001-088.

Remove the integrated fuel system module. Refer to Procedure 005-073.

Remove the camshaft sensor. Refer to Procedure 019-038 in the Troubleshooting and Repair Manual Electronic Control System Signature, ISX and QSX15 Engines.

Remove the injector camshaft cover plate capscrews.

Remove the injector cover plate and gasket.

Discard the gasket.

Remove the two capscrews and the injector camshaft retainer plate and o-rings.

Discard the o-rings.

CAUTION  Use caution when removing the camshaft to avoid damaging the camshaft bushings.

Remove the injector camshaft.

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.

Clean the injector camshaft and the bore of the injector camshaft scissor gear with Envirosol 655 solvent, or equivalent and a lint-free cloth.

Check the injector camshaft and injector camshaft scissor gear for fretting damage.

The camshaft and gear must be replaced if damaged.

Measure the seven injector camshaft bearing journals.

If the camshaft bearing journals are not within specifications, the camshaft must be replaced.

Inspect the camshaft lobes for cracks, scratches, or other damage.

Refer to the Camshaft Reuse Guidelines for Cummins® Engines with Roller Tappets, Bulletin 3666052, for further reuse guidelines.

CAUTION  Use caution when installing the camshaft to avoid damaging the camshaft bushings.

Coat the inside of the injector camshaft bearings with Lubriplate™ prior to installing camshaft.

Install the injector camshaft.

Install new o-rings on the retainer plate.

Install the retainer plate and capscrews.

Tighten the capscrews.

Install the injector camshaft cover plate with new gasket.

Install the capscrews.

Tighten the capscrews.

Install the integrated fuel system module. Refer to Procedure 005-073.

Install the camshaft sensor. Refer to Procedure 019-038 in Troubleshooting and Repair Manual Electronic Control System Signature, ISX and QSX15 Engines.

Install the injector camshaft scissor gear. Refer to Procedure 001-088.

Install the rocker lever shafts. Refer to Procedure 003-009.

Install the rocker lever cover. Refer to Procedure 003-011.

Install the upper gear cover. Refer to Procedure 001-079.

Operate the engine to normal operating temperature and check for leaks.