Cummins ISX11.9 CM2250 – Service Manual 013-006   Alternator Pulley

• Remove the cooling fan drive belt. Refer to Procedure 008-002 in Section 8.

Remove the alternator pulley. Use a strap wrench to hold the alternator pulley.

Use a ratchet or impact wrench to loosen the nut securing the pulley to the shaft.

Remove the nut and the pulley.

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

Clean the pulley with solvent.

Dry with compressed air.

Inspect the pulley for cracks and damaged grooves or keyways. Replace the pulley if damage is found.

Install the key into the shaft keyway (if equipped).

Install the alternator pulley with the shoulder of the pulley towards the alternator.

Lubricate the threads with engine oil and install the nut.

Tighten the locking nut; hold the shaft with an allen wrench, if necessary.

• Install the cooling fan drive belt. Refer to Procedure 008-002 in Section 8.
• Operate the engine and check for proper operation.