4 x 4 Hub Frozen Screw

[pcf_mark]

I have a single screw in my Warm hub that appears to be frozen. The other 5 came out fine. I tried rapping on the end and a little heat on the hub but no go. Before I make a mess of things anyone have a tip? These allen screws are super tough I suspect it will ruin the hub trying to remove it.

 

[gnpenning]

You don't by chance have a hammer type impact do you?

Just went through this with my F250. While different still the same basic concept. I soaked with penetration spray on and off for a while. I tried the hammer impact etc. I finally just drilled the head off. After getting it apart the screws came right out. They use mag chloride in our roads and the heads were corroded to the hub. Put a touch of anti seize on the head/ hub interface.

 

[Yeller]

This has been my go to forever, drilling the head off and dealing with it on the bench.

 

[SteveL]

Can you tighten the other screws back down then try and break it loose. Otherwise I have an impact screwdriver that takes hex bits. If you can locate one of these it might do the trick. I think the tool is a lisle

 

[Master Chief]

Exactly what Yeller wrote. Drill the head off.

 

[73project]

I also vote for getting your hands on a hammer impact driver. I bought one of these back when I was working on 70's Honda motorcycles so that you could loosen the phillips side cover screws without slipping out of the screw and making a mess of the head. I've been using this impact on countless other fasteners since then. This will make the removal a one step process, rather than drilling, removing, and sourcing another fastener to replace the one you just drilled out.

 

[Jdgephar]

I had to drill one of mine before. Just drill the head off and then you can remove the left over after the cap is off. Stainless screws in the aluminum threads don't like each other very much. Not that steel is much better, but I went to regular steel screws and anti-seize.

 

[pcf_mark]

Excellent suggestions thanks!