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Old 10-31-2015, 10:33 AM   #31
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am I wrong in thinking that I don't want my trailer brakes to lock up at any time? I always thought that trailer brakes were solely there to slow down the trailer enough to keep it from jackknifing, and not to contribute a large percentage to overall braking action.

I know that if your trailer brakes lock-up, you most likely will get a great view of the side of your unit as it passes you during the wreck.

Tim
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Old 10-31-2015, 10:35 AM   #32
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http://www.dexteraxle.com/i/u/614960...ric_Brakes.pdf

http://www.dexteraxle.com/i/u/614960...ric_Brakes.pdf
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Old 10-31-2015, 11:08 AM   #33
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am I wrong in thinking that I don't want my trailer brakes to lock up at any time?

No, but any trailer I've ever had if you turned the break controller all the way up the wheels would lock up. Then you turn it down to a point where you get smooth breaking without any way to lock up the wheels.

OPs complaint is inadequate breaking. He owned the same model trailer (a couple years older) with the same tv and isn't getting adequate break power with the new Roo. The point of turning it up to try to lock up the wheels was to illustrate the lack of braking power, not that he wanted to actually lock up the wheels driving down the road.

When picked up ours, the service guy actually took it around the parking lot before we left to check the brake adjustment. His test was to be rolling along at about 10mph and without hitting the truck breaks, manually actuate the break controller. If the trailer breaks smoothly stopped the whole rig, then the break adjustment was good.
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Old 10-31-2015, 02:33 PM   #34
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No, but any trailer I've ever had if you turned the break controller all the way up the wheels would lock up. Then you turn it down to a point where you get smooth breaking without any way to lock up the wheels.

OPs complaint is inadequate breaking. He owned the same model trailer (a couple years older) with the same tv and isn't getting adequate break power with the new Roo. The point of turning it up to try to lock up the wheels was to illustrate the lack of braking power, not that he wanted to actually lock up the wheels driving down the road.

When picked up ours, the service guy actually took it around the parking lot before we left to check the brake adjustment. His test was to be rolling along at about 10mph and without hitting the truck breaks, manually actuate the break controller. If the trailer breaks smoothly stopped the whole rig, then the break adjustment was good.

Exactly what point I was trying to prove, they tested tow vehicle brake controller and other thing and everything's checked out ok, these brakes seem to be an issue


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Old 10-31-2015, 08:36 PM   #35
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Exactly what point I was trying to prove, they tested tow vehicle brake controller and other thing and everything's checked out ok, these brakes seem to be an issue
I still find it hard to believe its the Never adjust brakes themselves if your having weak braking. I have them on a box utility trailer, a flatbed equipment trailer. I also had them on the Hybrid we had before the one we have now, and would of put them on the current one when the shoes needed replaced. I have never had an issue.

If they're in adjustment there's not a hell of lot of other things mechanically that could cause weak braking. As far as "locking up" is concerned, whether they do or not is not an indicator of anything. This is from Dexter; page 1 in the link I posted.

Note: Not all trailer brakes are capable of wheel lockup. Loading conditions, brake type, wheel and tire size can all affect whether a brake can lock.

If I was you I would be looking in the troubleshooting section in the link. I'd do or have done the tests mentioned starting on page 20.

This is on page 17

"Most electric brake malfunctions that cannot be corrected either by brake adjustments or synchronization adjustments can generally be traced to electrical system failure. Voltmeters and ammeters are essential tools for proper troubleshooting of electric brakes.

Mechanical causes are ordinarily obvious, i.e. bent or broken parts, worn out linings or magnets, seized lever arms or shoes, scored drums, loose parts etc. Replace defective parts with genuine Dexter replacements."


On page 21
The most common electrical problem is low or no voltage and amperage at the brakes. Common causes of this condition are:
1 Poor electrical connections.
2 Open Circuits
3 Insufficient wire size
4 Broken wires
5 Blown fuses (fusing of brakes is not recommended)
6 Improperly functioning controllers or resistors

I would bet my money on # 1 or #3. The use of scotch locks and cheap non waterproof crimp connectors is common on these trailers and
undersized wiring also has been known to be used.

Did the dealer troubleshoot anything electrically?
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Old 10-31-2015, 08:50 PM   #36
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Brakes

Yes they plugged in this box with a bunch much of analog gauges on it, then applied brakes by using manual override on controller, all number matched at different levels..
If controller was set at 13 the box said 13 of controller was set at 4 the box read 4

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Old 10-31-2015, 09:49 PM   #37
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They plugged it in where? At the 7 way connector on the TV?

If that's the case that told them something they probably should of known, the wiring on the tow vehicle and the controller is ok. Sounds like your dealers service tech is Mr Obvious. You would do the Dexter tests at the brake magnet connections using a multi-meter. They need to test the connections and wiring on the trailer itself. Between the trailers 7 way connector and each wheel.

If that checks out then they need to check each magnet. Maybe there was a bad batch of those and they slipped through the cracks. If the magnets are within specs then they need to check the drums to see if the armature surface and drum surface is within specs. Its all pretty easy stuff to check out.
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Old 10-31-2015, 09:56 PM   #38
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Yes plugged in to the 7 way. I'll have them check all the other stuff in spring, thanks you seems to know your stuff lol


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Old 10-31-2015, 10:18 PM   #39
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Just a quick "buttinski"; did they pull the wheel and check to see if bearing grease might have gotten on the brakes? I've seen this be a problem in the past when the buddy bearings get a little too much grease and it oozes out of the back seal.
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Old 11-01-2015, 07:20 AM   #40
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you seems to know your stuff lol
Not really, just enough to get me in trouble.
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