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#4596841 - 12/07/17 07:53 AM Trailer brakes work better sometimes than others?
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
This is on a Dexter axle. I don't know if they're out of adjustment or if it's just the difference between cold brakes and warm brakes. Trailer weights 2000 pounds with a load of 2000 pounds. I keep the controller on 5.5 and boost at 1 if you turn the boost off you have to crank power up to 9 or 10 to get the same braking effect.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596871 - 12/07/17 08:29 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
bullwinkle Offline


Registered: 10/09/04
Posts: 7649
Loc: Cincinnati, OH, USA
Probably need adjusted-I usually pull the drum to look at everything, then adjust the shoes to get a tiny scraping noise as the drum is rotated. On mine, there's a huge difference between cold & hot brakes, I try to warm them up with the manual lever before I take the trailer out on the road.
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06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

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#4596884 - 12/07/17 08:39 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
mk378 Offline


Registered: 09/27/15
Posts: 1414
Loc: USA
From your other thread about this, and reading the instructions for the brake controller:
* Boost is not recommended when the trailer is lighter than the truck.
* Establish the power setting by test driving at 25 mph and pulling the manual lever. Set the power to just below what makes the trailer brakes lock up. Then leave it there.

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#4596977 - 12/07/17 09:51 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
I could set it at the max setting with no boost and they wouldn't lock up.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596989 - 12/07/17 10:08 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
That's the part that doesn't sound right to me. For such a light trailer I shouldn't have to run at such a high setting.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596991 - 12/07/17 10:10 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
CT8 Offline


Registered: 10/09/14
Posts: 10920
Loc: Idaho
Originally Posted By: motor_oil_madman
I don't know if they're out of adjustment or if it's just the difference between cold brakes and warm brakes
When a problem is suspected you have to start with basics.
_________________________
"Don't let your preconceived notions get in the way of facts."Geoff Metcalf"

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#4597006 - 12/07/17 10:20 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Make SURE your wire connections and contacts are all PERFECT.

If there is any corrosion anywhere that affects resistance of the circuit, you'll never have consistent brakes.
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"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4597074 - 12/07/17 11:47 AM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
BrianF Offline


Registered: 02/25/15
Posts: 548
Loc: Sask, Canada
+1 on checking the wiring. I run a 2001 Trailswest 5 horse gooseneck.... well my wife does. I just get to fix it. Double check all wiring, grounds and connectors. A loose/corroded ground will cause a mess of problems that can be a pain to track down. We had ours rewired but still ran into inconstant brake performance. I cleaned up some connections in the junction box and cleaned the grounds at the junctions boxes between the wheels. It really helped but then I ran into more problems. I ripped each drum off and found 3 out of 4 brakes had the shoes delaminate completely. They looked to be original brakes, lots of friction material left its just that they let go. The friction material is bonded on to the backing. 4 new 7,000lb 12x2" Dexter backing plates were installed. Once they were adjusted and run in they seem to work great now.

Check the wiring and check the brake mechanicals!
_________________________
2006 Trailblazer LT. Castrol Edge with Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30 with Hastings LF608.
1993 GMC 1500. It has oil and still runs

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#4597165 - 12/07/17 01:49 PM Re: Trailer brakes work better sometimes than others? [Re: motor_oil_madman]
mk378 Offline


Registered: 09/27/15
Posts: 1414
Loc: USA
Originally Posted By: motor_oil_madman
I could set it at the max setting with no boost and they wouldn't lock up.

Using the manual lever? In that case, there's a problem.

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