Cummins ISX11.9 CM2250 – Service Manual 001-056   Camshaft Thrust Bearing

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.

• Disconnect the batteries. Refer to the OEM service manual.
• Remove the cooling fan. Refer to Procedure 008-040 in Section 8.
• Remove the front gear cover. Refer to Procedure 001-031 in Section 1.
• Remove the front camshaft idler gear. Refer to Procedure 001-036 in Section 1.
• Remove the front camshaft gear. Refer to Procedure 001-012 in Section 1.

Remove the two capscrews and the camshaft thrust bearing.

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

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

Use steam or solvent to clean the camshaft thrust bearing.

Dry with compressed air.

Inspect the thrust bearing for damage.

Measure the thrust bearing thickness.

Camshaft Thrust Bearing Thickness

Use a straightedge to inspect the retaining capscrews for necking.

If necking is observed, do not reuse the capscrews. They must be replaced.

CAUTION  Do not use the thrust bearing capscrews to drive the camshaft into place. This can result in damage to the thrust bearing. Use the following procedure for correct camshaft installation. Refer to Procedure 001-008 in Section 1.

Install the camshaft thrust bearing and capscrews over the nose of the camshaft.

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.

• Install the front camshaft gear. Refer to Procedure 001-012 in Section 1.
• Install the front camshaft idler gear. Refer to Procedure 001-036 in Section 1.
• Install the front gear cover. Refer to Procedure 001-031 in Section 1.
• Install the cooling fan. Refer to Procedure 008-040 in Section 8.
• Connect the batteries. Refer to the OEM service manual.
• Operate the engine to normal operating temperature and check for leaks.