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  #1  
Old 04-17-2020, 12:31 PM
lentiman's Avatar
lentiman lentiman is offline
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Boat: 2012 MasterCraft X2
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The Vault hubs: maintenance at 8 years?

I have a 2012 X2 on a MC single axle trailer with The Vault hubs. I've never done any maintenance on the trailer but now have time on my hands. I'll top up the brake fluid in the UFP brake reservoir, anything else I should do? If the brakes and rotors look good is there any reason to do any maintenance on The Vault hubs? Looks like if the brakes need work then everything gets replaced, is that true? Thanks.
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  #2  
Old 04-17-2020, 02:28 PM
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bturner2 bturner2 is offline
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That's actually a dang good question. I have a friend with a trailer about the same age but it has very few miles. Pretty much everything I've read about them is that as long as the seals are good so is the lube and no maintenance is required but I'll wait for others to chime in on that statement.

As far as other things go most recommend flushing the break fluid every 2 to 3 seasons or anytime you suspect water intrusion. On a trailer as old as yours I would pull the calipers off, clean everything then re-lube the slides an any surfaces that see movement. This will keep the calipers from locking of binding. Unless you see uneven wear on the pads or any wear on the rotors I'd leave them. I think I've only replace 1 set of rotors that were not damaged by a frozen caliper.
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  #3  
Old 04-17-2020, 02:42 PM
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Prostar 190 Prostar 190 is offline
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I had contacted the company this winter about weather or not my hubs need service on a 13 trailer and was told if they aren't leaking they are fine.
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  #4  
Old 04-17-2020, 03:45 PM
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lentiman lentiman is offline
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I talked to a gal at UFP/Dexter and she was very helpful. The re-packing kit for the 2.328" hubs is K71-029-00, new bearings and seals is K71-055-00, and the caliper and pad rebuild kit is K71-779-00. I thought they were fine but on jiggling the hub caps (with The Vault logo on them) they popped all the way in which isn't so good. I pulled off a wheel and the inside of the wheel is covered in grease, also not good. Makes me think the back seal failed. Rotors look fine though. So I'm ordering all the above kits, about $200 total.
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  #5  
Old 04-17-2020, 04:29 PM
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Shaun R Shaun R is offline
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I looked into the value hubs when I got my boat two years ago and was told the same. Don't mess with them until they start to leak. Make sure you get the correct fluid for the hubs because if I remember correctly they use something very specific to their setup.
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  #6  
Old 04-17-2020, 08:20 PM
bcd bcd is offline
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Pull all parts off and inspect the shaft. Also check the spacer piece all the way inboard. You'll have to hammer the inner bearing out to push out the inner grease seal, which will be destroyed.

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  #7  
Old 04-17-2020, 08:22 PM
bcd bcd is offline
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Insert the new inner bearing into the hub. Put red rtv on the grease seal and use a 4x4 to hammer it in flush.

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  #8  
Old 04-17-2020, 08:27 PM
bcd bcd is offline
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Slide into the spindle and insert the outer bearing. Put the nut on and torque to 18-20 in-lbs while spinning the hub. Install cotter key. Screw in a grease zerk into the end of the spindle and pump full of the special ufp vault hybrid grease.

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  #9  
Old 04-17-2020, 08:29 PM
bcd bcd is offline
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Fill the cap with grease and use a 2 or 2 1/2" PVC cap to hammer back on. Put a little loctite or rtv on the call before hammering back on.

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  #10  
Old 04-18-2020, 08:15 AM
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bturner2 bturner2 is offline
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Great post bcd!
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