ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 008-039   Fan Spacer and Pulley

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.

• Remove the fan drive belt. Refer to Procedure 008-002 in Section 8.
• Remove the cooling fan. Refer to Procedure 008-040 in Section 8.

Remove the fan spacer and the fan pulley.

Check the spacer and pulley for cracks or damage.

If damage is found on the fan pulley, the fan hub must also be inspected.

Inspect the fan hub for indications of oil seal leakage.

Inspect the fan hub for cracks or other damage.

Inspect the fan hub chamfer and fan pulley mating surface for damage.

Replace the fan hub if damage is found.

Turn the fan hub by hand to check for freedom of rotation.

The fan hub must spin freely without any wobble or excessive end clearance.

Inspect the fan hub bearing for wear.

The bearing must have a minimal amount of side-to-side or end-play movement.

Replace the fan hub if there is more than 0.15 mm [0.006 in] of end play in the fan hub.

Fan Hub End Play

NOTE: Some fan hub assemblies can be rebuilt with new bearings and related components. Check for part availability before disassembling the fan hub.

Install the fan pulley and the fan spacer.

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 cooling fan. Refer to Procedure 008-040 in Section 8.
• Install the fan drive belt. Refer to Procedure 008-002 in Section 8.
• Operate the engine and check for proper operation.