M11 Series – Service Manual – 001-008   Camshaft

Remove the air piping from the intake manifold.

Remove the rocker lever cover.

Refer to Procedure 003-011.

Remove the engine brakes, if equipped.

Refer to Procedure 020-001.

Remove the push tubes and push rods.

Refer to Procedure 004-014.

Remove the gear cover.

Refer to Procedure 001-031.

NOTE: It is possible to remove the camshaft without removing the cylinder
head. The cam followers can be tied up and away from the camshaft with wire.

Remove the camshaft idler gear.

Refer to Procedure 001-036.

Raise the cam follower assemblies, and use a wire to tie the cam followers
up away from the camshaft.

Rotate the camshaft to align the holes in the camshaft gear with the
thrust plate capscrews.

Remove the thrust plate capscrews.

Remove the three capscrews and the camshaft rear cover plate.

Install camshaft installation pilot, Part No. 3376388, as follows:

• Install the expander (1), Part No. 3376923, in the camshaft through
  the rear cover plate opening.
• Turn the screw inside the expander

  clockwise to expand
  the swell plug.

• Install the arbor sleeve (2) over the expander.
• Install the locating pilot extensions (3) to the expander.

Use one hand to rotate slowly and pull the camshaft from the cylinder
block and the other hand to balance the camshaft as it is removed.

Remove the camshaft pilot tool.

Clean the camshaft rear cover plate and the cylinder block mating surface.

WARNING  When using a steam cleaner, wear protective clothing, as well as, safety glasses or a face shield. Hot steam can cause serious personal injury.

Clean the camshaft with steam or solvent. Dry with compressed air.

Measure the clearance between the gear hub and the thrust plate.

Measure the outside diameter of the seven camshaft bushing journals.

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

Refer to Camshaft Reuse Guidelines for engines with crowned rollers, Bulletin No. 3666052.

Remove the camshaft gear, and measure the camshaft nose (1), thrust plate (2), and gear (3).

Refer to Procedure 001-013.

Install the camshaft gear on the camshaft.

Refer to Procedure 001-013.

Use Lubriplate™ 105, or equivalent, to coat the camshaft bushings
and camshaft.

Install camshaft installation pilot, Part No. 3376388, as follows:

• Install expander (1), Part No. 3376923,
• Turn the screw inside the expander

  clockwise to expand
  the swell plug.

• Install the arbor sleeve (2) over the expander.
• Install the locating pilot extensions (3) to the expander.

Rotate the camshaft slowly as it is being installed in the cylinder
block.

The camshaft installation pilot

must be disassembled as
it clears the number seven camshaft bushing to prevent interference with the rib across the top of die-cast flywheel housings.

Remove the camshaft pilot.

Rotate the camshaft to align the holes in the camshaft gear with the
thrust plate capscrew holes in the cylinder block.

Align the capscrew holes in the thrust plate with the cylinder block
capscrew holes.

Install the capscrews.

Use a new gasket to install the camshaft rear cover plate.

Tighten the three capscrews.

Measure the camshaft end clearance.

Do

not drop the cam follower levers on the camshaft lobes.

Carefully lower the cam followers onto the camshaft.

Install the camshaft idler gear.

Refer to Procedure 001-036.

Check the engine timing.

Refer to Procedure 006-025.

Install the gear cover.

Refer to Procedure 001-031.

Install the push tubes and push rods.

Refer to Procedure 004-014.

Adjust the valves and injectors.

Refer to Procedure 003-004.

Install the engine brakes, if equipped.

Refer to Procedure 020-001.

Install the rocker lever cover.

Refer to Procedure 003-011.

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