I was changing out the grease on my 2009 trailer with Vault hubs and noticed that one of the screws in the square cap on the axle tube had sheared off. The cap doesn’t seem to move.
my understanding is that cap help hold the rubber in the axle. I don’t see how it can go anywhere wit the hub there and I was told on Facebook it’s just a self tapping screw.
1. If it’s just a self tapper, can I add another screw to the top or bottom?
2. Any info on the type of screw to use?
3. How much do I need to worry about length?
On another note, this is the second time I’ve opened my vault hubs in 15 years and they looked great!
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