Fan Clutch Replacement Fan Blade

Tools Required

Notice: If a fan blade is bent or damaged, do not repair and use the damaged part. Replace a bent or damaged fan assembly with a new fan assembly. Using a fan with a different diameter, pitch, number of blades, or type of blade material may effect the cooling efficiency, performance and engine noise level.

1. If a fan assembly fails, inspect the hub and the drive components. A fan assembly may fail due to an imbalance in the hub. This type of failure may not be the fault of the blades.
2. Tilt the cab. Refer to Cab Tilting in General Information.



3. Insert the J 38426 around the pulley in order to secure the pulley.

Insert the J 38425 onto the fan clutch nut.

4. Remove the following components:

•	The fan (1)

•	The fan clutch (2)

5. Inspect the following components for cracks, distortion, or other damage:

•

The belts

•

The hub

•	The adapter

•	The pulley

6. Replace the components, as necessary.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.




1. Install the following components:

•	The fan (1)

•	The fan clutch (2)

Tighten
Tighten the fan clutch nut to 145 N·m (107 lb ft).

2. Lower the cab. Refer to Cab Tilting in General Information.

Fan Clutch Replacement Fan Clutch

Tools Required

1. Tilt the cab. Refer to Cab Tilting in General Information.



2. Remove the following components:

•	The fan (1)

•	The fan clutch (2)

•

3. Remove the fan blade-to-fan clutch bolts and the washers.



4. Remove the fan blade (1) from the fan clutch (2).
5. Inspect all of the components for smooth surfaces.

1. Connect the fan blade (1) to the fan clutch (2).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the fan blade-to-fan clutch bolts and the washers.

Tighten
Tighten the fan-to-fan clutch bolts to 21 N·m (16 lb ft).




3. Install the following components:

•	The fan (1)

•	The fan clutch (2)

4. Lower the cab. Refer to Cab Tilting in General Information.