Vault Cap Leaking

[Rangerdic]

Spend some time in the search forum. Leaking a bit Vault Hybrid Lubricant between hub and the piston any idea what would cause this?

Thanks

[Team Mud]

Check the hub after you go on a trip to see if its getting hot, If its getting hot you may have bigger problems.

There's a O-ring between the outer cap and hub, The O-ring may be bad.

[Rangerdic]

Temperatures are warm to touch, wonder if the O-rings are starting to fail, I know there's two o-rings between piston and inside the cap.
Did not think of the O-ring between hub and the cap, will look at that....

Thanks for the reply...

[Lightning 6]

Yes, worn o rings inside the piston. Pistons are exposed to road grime that gets between the piston i-rings & the metal housing. O rings get damaged as the piston moves and eventually they leak.

Personally, I use the vinyl bearing bras over my ufp bearing covers ….. leaving sufficient space for the piston to move.

[Rangerdic]

Yes, worn o rings inside the piston. Pistons are exposed to road grime that gets between the piston i-rings & the metal housing. O rings get damaged as the piston moves and eventually they leak.

Personally, I use the vinyl bearing bras over my ufp bearing covers ….. leaving sufficient space for the piston to move.

I like your idea, which bearing cover are you using?

[Lightning 6]

I use fulton bearing cover protectors 1.98”…..$9 on amazon. They are incredibly snug….I push in on the end while installing & lift up a side to let the air escape….end result leaves room for the piston to freely move. Been using them for years & my ufp gold series caps look & perform flawlessly.

Same trick will work w/ vault caps…..they are identical to gold series oil bath caps….vault just has an opaque piston.

[Rangerdic]

Great thank-you.....for your time

[kcg202champ]

I just switch ALL 4 of my VAULT hub covers over to BEARING BUDDIES... external zerk fitting for adding grease and the small black colored covers went on pretty snug.
I got tired of loosing the hub covers AND a couple Ranger trail chrome caps

[DaveBrabec]

Only issue in 10 years with a Vault cap was when it popped off due to stuck caliper and getting hot.

[bgibson]

Only problem I keep having with the Vault system is not being able to keep grease seals from leaking every 1-2 seasons! i HAVE TRIED DIFFERENT SEALS. this LAST TIME i WENT TO A TIMKEN SEAL...SEE HOW THIS DOES!

[Blair B]

Only problem I keep having with the Vault system is not being able to keep grease seals from leaking every 1-2 seasons! i HAVE TRIED DIFFERENT SEALS. this LAST TIME i WENT TO A TIMKEN SEAL...SEE HOW THIS DOES!

Have you changed the wear sleeve?

[bgibson]

Yes everytime I change seals I replace wear sleeve.

[Flipper920]

I’m having the same problem ! change seal and wear sleeve every year ! spindle is fine ! tire is wearing fine ! can’t seem to figure out what is causing the accelerated wear ?….

[Rangerdic]

I've had this happen to me, if the wear sleeve is not positioned properly, the grease hole will cut the lip seal.

[Flipper920]

I've had this happen to me, if the wear sleeve is not positioned properly, the grease hole will cut the lip seal.

good to know ! thank you !

[DaveBrabec]

I've had this happen to me, if the wear sleeve is not positioned properly, the grease hole will cut the lip seal.

I quit using the sleeves with holes. One of me axles doesn’t have a hole for zerk anyway.