Trailer drum brakes.

[Birdsnest]

So just put new everything (brakes)on by duel axel cargo trailer. New back plate new magnets...everything except new wiring. Put it all together and adjust brakes so there is a bit of friction. Take the trailer for a ride. Not much braking power.. When manually applied I can just barely feel the trailer stopping the truck. Drive around for 5 mins using the brakes and then adjust the brakes again to the slight resistance but no real improvement. All 4 drum were warm suggesting they were all working equally however I thought I should be able to lock those tires up with new brakes. Im towing with a brand new 2016 duramax with an factory controller.

What to do next?

I suspect that since all four drums were warm there may be a voltage problem to all of them but I really do not know where to start looking. I would guess start at the plug and keep working down to the magnets but I should find something that is effecting them all, ya?

Thanks for any advice.

 

[Mike_R]

I assume you tried adjusting the brake controller in the truck?

 

[Birdsnest]

I assume you tried adjusting the brake controller in the truck?

Had it turned up as high as it would go.

 

[Reel Gone]

There are different amperage magnets, did you replace with the same that came off?

 

[Birdsnest]

There are different amperage magnets, did you replace with the same that came off?

I did not order the parts so I guess I will start there.

 

[noluck]

same with mine, it took a few miles to really get working well, i blame it on the magnet seating against the drum