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Old 07-19-2010, 05:46 PM   #1
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brake assembly size 34' limited

Hi

I would like to replace all six brake assembies using the whole backing plate, shoes etc packages. What size is the backing plate and shoe size I need to order? I will buy the self adjusting type. I see the kits can be bought in a variety of weight stopping load pairs. IE 1 pair will stop 12,000 pounds. Since the trailer weighs less than 10,000lb and has six brake pairs - will the 2000# per pair be best?

Tim

Rolling in TN
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Old 07-19-2010, 06:12 PM   #2
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Hi

I would like to replace all six brake assembies using the whole backing plate, shoes etc packages. What size is the backing plate and shoe size I need to order? I will buy the self adjusting type. I see the kits can be bought in a variety of weight stopping load pairs. IE 1 pair will stop 12,000 pounds. Since the trailer weighs less than 10,000lb and has six brake pairs - will the 2000# per pair be best?

Tim

Rolling in TN
Your rig has 12 inch brakes.

Extra braking capacity is always a plus, never a minus.

Andy
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Old 07-19-2010, 06:27 PM   #3
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The brakes are rated per axle, not per wheel, 6k......3k per wheel...etc. don't forget that at any one point in braking or any rolling situation one (in the case of tandem) or 1 or 2 (in the case of a triple axle) axle may be the only one effectively acting on the situation, forward pitch of the trailer, speed bump, pot hole, all are factors that we don't normally think of, so for a dollar or two more, go with the 7.2 brake assembly.
Greg
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Old 07-20-2010, 05:26 PM   #4
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Originally Posted by Inland RV Center, In View Post
Your rig has 12 inch brakes.

Extra braking capacity is always a plus, never a minus.

Andy

I assume these are the 2" width? Thanks again for your help.
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Old 07-20-2010, 06:29 PM   #5
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12 x 2 probably Alko-Kober (used to be Hayes) most common replacemnet now would be the Dexter.
Greg
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Old 07-29-2010, 08:13 PM   #6
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New assemblies came today. I plan on installing along with wheel bearing repacking. Will post pics. Can I use two floor jacks to raise one whole side of the AS at once to do the work??

Tim
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Old 07-29-2010, 08:26 PM   #7
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...Can I...
can or may?

either way the answers the same.

there are 100s of posts here on how, where, why and IF lifting is ok...

so its time2learn2search...

until then,

herez my view x2, in pix n werdz...

http://www.airforums.com/forums/f438...tml#post841915

http://www.airforums.com/forums/f457...tml#post428907

it would be WISE once lifted (use the tongue jack extended also),

to PLACE properly rated STANDS under the axle mounting plates...

cheers
2air'
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Old 07-29-2010, 08:45 PM   #8
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Stupid little tip learned from doing this job. Hook your wiring up before bolting the backing plate in place - especially if your using heat shrink connectors. Saves you from crawling under the trailer to do it later.....
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Old 08-30-2010, 05:15 PM   #9
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Stupid little tip learned from doing this job. Hook your wiring up before bolting the backing plate in place - especially if your using heat shrink connectors. Saves you from crawling under the trailer to do it later.....
Smart tip to me. I'm now ready to install the 6 full brake assemblies, will try to do 1 wheel at a time rather than a whole side at a time. Any other smart tips?
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Old 08-30-2010, 06:09 PM   #10
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yeah take photos of each step ...

they might help the next person ...

OR help you if/when problems arise.

cheers
2air'
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Old 08-31-2010, 04:19 PM   #11
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yeah take photos of each step ...

they might help the next person ...

OR help you if/when problems arise.

cheers
2air'
Will do - pictures are a great way to 'remember' what things looked like when the were still working.
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Old 08-31-2010, 05:19 PM   #12
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Will do - pictures are a great way to 'remember' what things looked like when the were still working.
And how it goes back together.

>>>>>>>>>>Action
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Old 09-05-2010, 10:30 PM   #13
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Well I completed swaping all six brake asseblies today. A few things I learned along the way:
- check new assemblies out before installing. Several of mine had springs loose, adjusters mis aligned, and cables for auto adjust disconnected. Nothing too big to fix but best done before installation
- AS axles are supposed to have a slight bow upward. After a semi-paniced call to Inland RV I found that this was normal.
- Used this time to also inspect both sides of tires for damage etc, inspect (and caulk) wheel wells, change shocks, repack bearings.
- PO said brakes etc were good, however, 3 of six brakes were not working because of broken wires, frozen adjusters, or bad magnets. Dont trust PO stataements always check for your self
-Heat shrink/ crimp connections seemed best, installed with small propane torch to heat shrink connections (alomst burned barke wires once)
- if you can turn a wrench and follow instructions, many of which i found in the forums, its straight forward but time consuming. It took me 2.5 days to do 6 wheels but I'm picky and not a shop.
- when bolting new assembly back plate, be sure to not pinch your brake wires between the backingplate and the mounting plate (did that once and almost sheared the wires)
- plan on 3 cans of brake clean for six wheels to clean bearings and drum, also 3 rolls of shop towels
- resecure feed wires to frame so as to not have them hanging loose after install

Well worth the time and learning involved.
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Old 09-05-2010, 10:41 PM   #14
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Sounds like a good job done. Gonna show us any photos?
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