Replacement Flexible Brake Line Hose for a Trailer with Torsion Axles

Updated 10/08/2012 | Published 10/06/2012

Question:

I just purchased a used utility trailer that has single torsion axle suspension with 7 inch drum brakes. I need to replace the brake line flex hoses because I thing the current ones were installed incorrectly and are damaged as they were rubbing on the suspension. Since Ive never done brakes on torsion axles before, Im not sure where all the parts are suppose to connect in the #80910-T brake hose kit. My guess is that the short piece of metal hydraulic tubing connects directly into the wheel cylinder. Is that correct? If so, is it common to put a bend in the metal tubing to change the routing angle of the flex hose? Also, where is the intended mounting location of the angled metal part in the kit that has a hole in it. I assume it it to secure the other end of the flex hose that mounts to the body of the trailer. In my photo it appears to me that the metal hydraulic line that is coming from the trailer body, should be remounted in a different position instead of its current position and location where it comes through the hole in the axles bracket. This configuration only allows the flex hose path to make a 360 degree turn into wheel cylinder. I also question the range a travel that the flex hose can move without binding or hitting something. I would greatly appreciate some detailed advice on the correct brake hose set up for my application.

asked by: Rick O

Expert Reply:

First, on kit # 80910-T, one end of the flexible hose attaches directly to the brake assembly. You will then route the other end to the steel brake line and use the metal piece with the flared ends to go from the flexible hose to the steel brake line. You can use the little bracket and the clip to hold the hose in place by welding the bracket to the frame where needed.

The hose needs to be long enough to account for the up and down movement of the suspension. The hose in your picture look like it may be too long or at least it could be routed differently. I have included a link to the different brake line options for you to view. You need the hose that, once routed the way you want, allows for the full movement of the suspension.

expert reply by: Michael H