botex trailer brakes

[Logan]

has anyone else had the problem of instant locking brakes on their botex trailer? ours is a euro 11000 on a valtra 6550, and we've been disconnecting the hose when empty, and trying not to use the brakes when loaded and connected- for a year now(!). just melts the tyres off. so today had an adjustable pressure valve plumbed inline, has stopped the skidding but not sure how much braking is happening now. did anyone else have this situation and find a way of improving it? needle valve as well to reduce flow? many thanks.

[treequip]

If the brakes were grabbing why couldn’t you just wind the slack adjusters back a bit?

 

Does it not have a load sensing valve?

[arbwork]

common problem, fit a limiting valve solves the prob just try to set valve so skidding stops you should feel trailer braking , if you need more info call cheers J

[Logan]

If the brakes were grabbing why couldn’t you just wind the slack adjusters back a bit?

 

Does it not have a load sensing valve?

 

yeah, do you mean the adjusters on the drum? first thing when we bought it was jack it up and check them. pretty basic brakes on these. no load sensing valve. very basic drum brakes- shoes, a cam to activate the shoes, and a hydraulic ram. that's it! no, the problem is when you put your foot on tractor brakes, and wham! those wheels are smoking!

[Logan]

common problem, fit a limiting valve solves the prob just try to set valve so skidding stops you should feel trailer braking , if you need more info call cheers J

 

hello there arbwork, i've just fitted a pressure limiting valve on the line yesterday and it seems a compromise- i've got it set so it helps brake when loaded, can hear and feel trailer braking and no lockup; but when empty still locks right up. when i backed pressure right off it stopped skidding when empty but didn't seem to be braking either! perhaps i should fit a ball valve so i can just turn it off when empty.... coz unplugging it several times a day leaves back end slick with oil. my hyd man said put needle valve in as well, reduce the flow speed, but i can't see how that'd help? is my pressure valve same as your limiting valve? all the best.

[treequip]

It won’t have a load sensing valve if it’s on oil brakes, my bad for assuming it was on air.

 

You might be able to find some adjustment where the ram connects to the brake actuator. The arm should have several holes in it, the further up the arm the ram is connected the less “grabby” the brakes will be.

[arbwork]

Logan pm sent , needs to be sorted properly ! I will put you in touch with other owner and go from there , regards J