Here's a general procedure. Consult a repair manual specific to your 1996 S-10 Blazer V6 for precise details and torque specifications. Variations may exist depending on the exact engine configuration.
Tools You'll Likely Need:
* Socket wrench set: Various sizes, including one to fit the fan clutch nut.
* Wrench: Possibly a box-end or open-end wrench for holding the water pump pulley or a special fan clutch removal tool.
* Penetrating oil (like PB Blaster): To loosen rusted or seized components.
* Gloves: To protect your hands.
* Jack stands: To safely support the vehicle.
* Drain pan: To catch coolant.
* Shop rags or towels: To clean up spills.
* Fan clutch puller (recommended): This tool makes the job significantly easier.
Procedure:
1. Drain the coolant: Locate the radiator drain petcock and carefully drain the coolant into a suitable container.
2. Remove the fan shroud (if applicable): This is usually held on with clips or screws.
3. Apply penetrating oil: Liberally spray penetrating oil onto the fan clutch nut and around the fan clutch to help break any corrosion. Let it soak for at least 15-20 minutes.
4. Secure the water pump pulley: This is crucial to prevent it from turning while you remove the fan clutch nut. You might need a wrench to hold the pulley in place while you loosen the nut. A special fan clutch holding tool is helpful here. Some designs allow for using a socket on the fan clutch nut and another socket on one of the water pump bolts to hold the pulley still.
5. Remove the fan clutch nut: Use the appropriate socket and wrench to carefully remove the nut. It will likely be very tight.
6. Remove the fan clutch: Once the nut is off, the fan clutch should pull off. However, it can sometimes be stubborn. A fan clutch puller is highly recommended to avoid damaging the water pump. If you don't have a puller, you may need to gently tap it off using a soft-faced mallet and a block of wood to protect the water pump.
Important Considerations:
* Water Pump Damage: Be extremely careful not to damage the water pump during this process. The water pump shaft is delicate.
* Coolant Loss: Expect some coolant loss. You'll need to refill the system after reassembly.
* Repair Manual: A repair manual specific to your vehicle is invaluable for detailed instructions and torque specifications.
If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improper removal can easily damage the water pump, requiring an even more expensive repair.
