Are these brakes working properly?

   / Are these brakes working properly? #11  
I'm thinking you don't have your break away wired correctly. Use a vm & check for 12v at the brakes with the cable pulled. You also should be able to hear a buzzing noise comming from the brakes (both of my trailers do) if power is being supplied to the brakes with the cable pulled
 
   / Are these brakes working properly? #12  
I'm thinking you don't have your break away wired correctly. Use a vm & check for 12v at the brakes with the cable pulled. You also should be able to hear a buzzing noise comming from the brakes (both of my trailers do) if power is being supplied to the brakes with the cable pulled

Your ears must be better than mine but that is what 25 years of fooling with airplanes will do. I always check mine with a screw driver. The magnets will make it stick when energized.

Chris
 
   / Are these brakes working properly?
  • Thread Starter
#13  
No, you want the brakes just a fraction of a mm before touching. This is very rarely possible with brakes because nothing is perfectly round or matching. They kind of need to wear in the first few miles.
Chris

OK, that makes sense to me. My trailer brakes came used with the axles and were already "broken in". The sawmill brakes were new and perhaps need a break-in period. thanks. I will re-adjust them.
Bob
 
   / Are these brakes working properly? #14  
Your ears must be better than mine but that is what 25 years of fooling with airplanes will do. I always check mine with a screw driver. The magnets will make it stick when energized.
Chris

A compass will also work.
 
   / Are these brakes working properly? #15  
No, you want the brakes just a fraction of a mm before touching. This is very rarely possible with brakes because nothing is perfectly round or matching. They kind of need to wear in the first few miles.
Chris

This is my understanding too. When the brakes are new, you want to adjust them just until they drag ever so slightly. This will cause them to wear perfectly round. After 50 miles or so, there will be no more dragging and they will be just ever so slightly from grabbing.
 
   / Are these brakes working properly? #16  
Your ears must be better than mine but that is what 25 years of fooling with airplanes will do.

Chris

Owning a drag race car in my previous life really messed my ears up. I guess there not as bad as I thought except for this constant ringing.
 
   / Are these brakes working properly? #17  
One of my trailers actually has a pretty loud buzzing from all of the brakes. Others I have heard aren't as loud, maybe that is why you can't hear them?
 
   / Are these brakes working properly? #18  
One of my trailers actually has a pretty loud buzzing from all of the brakes. Others I have heard aren't as loud, maybe that is why you can't hear them?

I have worked on dozens of trailers with electric brakes and never heard the buzz. I must be deaf.

Chris
 
   / Are these brakes working properly? #19  
maybe my brakes are just old and pieces of crap?
 
   / Are these brakes working properly? #20  
if you follow the other advise given



then no, its unlikely that the shoes are draging on the drum all the time with the above method.

FYI its how i set my drum brakes also

yep.. I do my tractor drum brakes the same way as well..
 

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