One Nev-R-Adjust Trailer Brake Assembly is Very Tight Even After Loosening the Brakes

Question:

I just bought a left and right hand 10 inch self adjusting break assembly. I installed the right hand and installed the drum, all is good. I installed the L/H and installed the Drum, but was very tight. I adjusted the adjuster wheel so that it is at its tight, no extension, but the drum when installed will only move with extreme pressure. No electric power yet. What can it be? I made sure everything was in its proper place properly seated. Have installed brakes for many years.

asked by: Leonard B

Expert Reply:

Is it possible that the drum is slightly smaller than the one on the other side? This does not seem likely but it might be worth measuring them on the insides to see.

Adjusting self adjusting brakes is actually a little more difficult than you might think. If you were able to turn the adjustment wheel to back off the shoes and you have reached as far as it will go, try giving the shoes a little inward push. It is possible that they are stiff or need lubrication (careful not to get any on the pads).

If you had trouble loosening the adjustment wheel, it is because there is a lever that you have to lift up on in order to turn the wheel freely. I have provided a helpful link to an answer with a video I did showing exactly what I mean regarding that lever and adjusting the brakes.

expert reply by: Michael H