Centinel System – Repair Manual – 008-036   Fan Hub, Belt Driven

• Remove the cooling fan. Refer to Procedure 008-040.
• Remove the cooling fan drive belt. Refer to Procedure 008-002.
• Remove the automatic belt tensioner (water pump). Refer to Procedure 008-080.

• Remove the cooling fan. Refer to Procedure 008-040.
• Remove the water pump belt. Refer to Procedure 008-003.
• Remove the alternator belt Refer to Procedure 013-005.

• Remove the cooling fan. Refer to Procedure 008-040.
• Remove the fan and water pump belt. Refer to Procedure 008-003.
• Remove the alternator drive belt. Refer to Procedure 013-005.
• Remove the fan hub and the fan hub support. Refer to Procedure 008-088.

WARNING  This component weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this component.

Remove the mounting capscrews and the fan hub assembly.

WARNING  This assembly weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this assembly.

Remove alternator belt tensioner and bracket.

Remove the capscrews and the fan hub assembly.

Remove the fan hub mounting capscrews.

Remove the fan hub from the fan support.

Inspect the fan hub for the following:

• Freedom of rotation
• Cracks
• Grease seal leakage.

Repair or replace the fan hub if the fan hub does not rotate freely or if there is evidence of cracks or grease seal leakage.

Refer to the OEM service literature for repair of the fan hub.

Measure the fan hub end clearance play. The end clearance is dependent upon the fan hub style.

Replace the fan hub if the end clearance is not within the manufacturer’s specifications.

Refer to OEM service manual for additional inspection steps.

Inspect the fan hub for the following:

• Freedom of rotation
• Cracks
• Grease seal leakage.

Repair or replace the fan hub if the fan hub does not rotate freely or if there is evidence of cracks or grease seal leakage.

Measure the fan hub end clearance. The end clearance is dependent upon the fan hub style.

Replace the fan hub if the end clearance is not within specifications.

WARNING  This assembly weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this assembly.

Install the fan hub assembly and the capscrews.

Tighten the capscrews.

WARNING  This assembly weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift this assembly.

Install the fan hub and the capscrews.

Tighten the capscrews.

Install the belt tensioner bracket.

The fan hub must be installed in the correct location on the fan support to allow proper clearance between the fan and fan shroud. Refer to the OEM service manual.

Make certain the correct fan center is used for the application.

Install the fan hub on the fan support using four capscrews and washers.

Tighten the capscrews.

• Install the automatic belt tensioner (water pump). Refer to Procedure 008-080.
• Install the cooling fan drive belt. Refer to Procedure 008-002.
• Install the cooling fan. Refer to Procedure 008-040.

• Install the alternator belt. Refer to Procedure 013-005.
• Install the water pump belt. Refer to Procedure 008-003.
• Install the cooling fan. Refer to Procedure 008-040.

• Install the fan hub and fan hub support. Refer to Procedure 008-088.
• Install the alternator drive belt. Refer to Procedure 013-005.
• Install the fan and water pump belt. Refer to Procedure 008-003.
• Install the cooling fan. Refer to Procedure 008-040.