How To Clean And Reseal A Full Float Axle Shaft

Are you re-installing a full float axle into your truck? Make sure you clean and reseal it properly. In this guide, we’ll show you the best way to do it.

The Benefits Of Cleaning An Axle Shaft

The axle shaft flanges on a truck with full float axles are constantly exposed to harsh elements, including:

• Moisture
• Dirt
• Road salt

Due to constant exposure to these elements, the axle shaft flange needs to be well sealed where it meets the hub. If it’s not well sealed, contaminants can leak into it, and begin corroding the locknut, etc. that are sitting behind the flange. Gear oil could also potentially seep out.

The Best Way To Clean And Reseal An Axle Shaft

Please Note – When you pull the axle shaft, you may encounter some oil leaking as it is removed from the hub. Assuming you’ve pulled the axle shaft, take the following steps:

1. Plug the axle shaft opening in the hub to prevent any debris from getting inside of it.
2. Use a wire wheel on a drill to remove any remaining sealant or gasket material from the backside of the axle shaft flange, and from the hub face.
3. Clean both surfaces with brake cleaner, and wipe dry with a rag. Both surfaces should be perfectly smooth.
4. Apply a 1/4″ bead of RTV silicone (room temperature vulcanizing silicone) to the surface of the hub. Black or gray RTV silicone is the best option for this job.
5. Slide the shaft in. Don’t wait too long, or the silicone will dry out.
6. Torque the bolts to spec.
7. Wipe off any excess silicone.

Do you have any questions about cleaning and resealing an axle shaft? Please contact us. We’ll be happy to answer your questions!