Here's a general outline. Specific steps may vary slightly depending on your exact Blazer's configuration (2WD, 4WD, specific transmission type). Consult a repair manual specific to your year and model for detailed instructions and diagrams. This information is for general guidance only.
1. Preparation:
* Raise and Secure the Vehicle: Safely lift the Blazer using a jack and securely support it with jack stands under the frame. Ensure the vehicle is stable and won't move.
* Remove the Wheel: Remove the right front wheel.
* Disconnect the ABS Sensor (if applicable): Locate the ABS wheel speed sensor wire connected to the axle housing. Carefully unplug it.
* Drain the Differential: This is important to minimize fluid spillage. Locate the drain plug on the differential housing and drain the gear oil into a suitable container. Remember to replace the drain plug and refill the differential with the correct type and amount of gear oil after the axle is reinstalled.
2. Axle Removal:
* Disconnect the Axle Shaft from the Differential: This is usually done by removing a retaining clip or bolt holding the axle shaft in place within the differential. This is the most crucial and potentially tricky step. You may need a special tool (like a C-clip pliers) to remove the retaining clip. Refer to your repair manual for the precise location and method.
* Disconnect the Axle Shaft from the Wheel Hub: Remove the cotter pin and castle nut from the axle shaft end at the wheel hub. You'll likely need a socket and a wrench. Then, carefully slide the axle shaft out of the wheel hub. Sometimes a puller is necessary to help remove the axle shaft from the hub.
* Remove the Axle Shaft: Once disconnected from both the differential and the wheel hub, the axle shaft should be free to slide out. Some resistance is normal.
3. Reassembly (in reverse order):
* Install the new or refurbished axle shaft (if replacing).
* Connect the axle shaft to the wheel hub and differential, tightening all fasteners to the manufacturer's specifications.
* Refill the differential with the correct type and amount of gear oil.
* Reconnect the ABS sensor (if applicable).
* Reinstall the wheel.
* Lower the vehicle.
Important Considerations:
* Tools: You'll need a variety of tools, including jack stands, a jack, wheel chocks, sockets, wrenches (including a possible impact wrench), a torque wrench, possibly a C-clip pliers, and potentially a puller.
* Repair Manual: A factory repair manual is highly recommended. It will provide detailed diagrams and instructions specific to your vehicle, and is invaluable for avoiding mistakes.
* Parts: If replacing the axle, ensure you get the correct part for your specific Blazer model and year.
* Safety: Working on a vehicle can be dangerous. Always prioritize safety by using jack stands, following proper procedures, and being aware of potential hazards.
This is a simplified overview. Always consult a repair manual for your specific vehicle before attempting this repair. If you are not comfortable performing this repair yourself, take your Blazer to a qualified mechanic. Improperly reinstalling the axle can lead to serious damage to your vehicle.
