I have a 1986 R688ST Tandem Axle Dump Truck. I am looking to figure out what the problem is with my brakes, but the air lines are the biggest jumble of a mess i have ever seen, and I don't know where to start on this one. There are two things I would like to address here... 1. I don't know where to start on this one, but the brakes just aren't as good as they ought to be (haven't been since we purchased the truck 5 years ago). I put all new drums, cans, and shoes around the truck, and a new valve under the pedal, but it just doesn't stop like it should. Anything else to replace that would help? 2. I believe this may be a road tractor conversion, but all the tow lines have been capped off in the frame rails. I would like to tie the hand brake into the brakes of the truck. How would I go about doing this? Is it best to tie into the front or rear? Any help to this would be great!
