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Old    Stuey (stuey)      Join Date: Dec 2004       08-23-2011, 12:12 AM Reply   
Hey guys,

Looking for some help on how the brakes are put together on a trailer. I have a 2008 Extreme tandem axle trailer under my Malibu - disc brakes on the front axle only. It has normal surge brakes. It seems like one caliper perhaps siezed up or something on the last trip out.. not sure if the caliper is ok but I haven't got that far yet.

I took the brakes apart on the one side and the pads are of course cooked and have caused huge grooves in the rotor, so it all needs replacing. I took the entire caliper assembly apart and tried to get the rotors off, but it appears they are attached to the hubs and don't come off as their own unit.. or if they do I have no idea how. There is a rubber boot type thing in between the hub and the rotor but not sure how they are connected or if its a solid unit.

Anyways... 1) how do I take the hub off/apart and b) any idea if the rotors/hubs are generic to all trailers or do I have to phone Extreme and next day air a part out to me? I know the pads are from a Kia Sofia. Road trip this weekend so need to make sure I'm going to get there!!

Thanks all..
Old    Mikeski (mikeski)      Join Date: Aug 2003       08-23-2011, 1:16 AM Reply   
If the caliper is OK then just replace the pads and leave the grooves. If they make noise or pulse you can deal with the rotor later. I would never do this on a car but I think it's fine on a boat. You might also be able to take it to a good tire store where they can turn the rotor on the trailer saving your the hassle of repacking the bearings if they are OK. If it got cooked there is a good chance the grease in the hub is shot too.
Old    Mikeski (mikeski)      Join Date: Aug 2003       08-23-2011, 1:30 AM Reply   
More helpful stuff...

Master cylinder manual: http://www.trailmastertrailers.com/p...aintenance.pdf

Disc manual: http://www.ufpnet.com/Portals/0/PDFs/TBDiscMaint.PDF
Old    Stuey (stuey)      Join Date: Dec 2004       08-23-2011, 2:59 AM Reply   
Hmm... that would probably be an option, the pads are cheap and easy to replace. I'd feel better just doing the rotors though... they have some pretty serious grooves on them.

I had the manuals for everything but doesn't say much in replacing the rotor. I can't even figure out how they come off as it appears to be part of the axle.

The hubs are 'The Vault' sealed units if it makes any difference. There doesn't appear to be any noise or friction from the hub, and it still moves freely.
Old     (mxvet)      Join Date: Aug 2011       08-24-2011, 10:19 PM Reply   
On then end of the rotor there is the vault cap. Take a rubber mallet and tap each side of it until the cap comes off. The black plug that says vault, stays on. Once you get this cap off you will see a potter pin and lock nut. Take these off and the rotor will slide off. Grease will go every where.

For reinstall its recommended to replace the bearings. You put everything back together dry and then screw a grease fitting into the end of the axle and use a grease gun to push the special vault oil into the assembly. Once it starts to come out of the nut, its good. Then you tap the cap back on.

Its messy and you have to order the grease/oil. Id get the rotor turned on the trailer if possible. .

I've been having lots of fun with my ctw trailer. Brake drag from day i bought it. Lots of calls to upf and replacing parts.
Old    Jeff D (Jeff)      Join Date: May 2010       08-25-2011, 7:36 AM Reply   
O'reilly Auto Parts turns rotors here in Louisiana. Something like $12-15 per rotor. They will probably want to measure it against a minimum thickness value in their computer that they will look up by year/model. Tell them just to shut up and turn it!
Old     (mxvet)      Join Date: Aug 2011       08-25-2011, 7:45 AM Reply   
The rotors have minimum thickness stamped on the inside wall. They cost about $50 new and yes you have order them.

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