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HZ tonner
My right back brake always locks up before the left one.....despite me taking both back wheels off looking at drum free play ....swapping drums....still the same.
My mate says its because the brake line to right back wheel is shorter than left one and you will always get a little bit of compression in line....? true or false...?
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not true im affraid,even if one is closer in adjustment than the other, the closer one will just sit on the drum till the other comes out to it,s drum, be for any braking effect.
are the leading /trailing shoes on the righ way? not ass about or two on on side and two on the other?
maybe one lining has been contaimenated with something at one stage ie brakefluid changeing its compound?
pete
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compression in the line? only there was air in it
have you tried bleeding the brakes?
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I doubt it, the pressure to both wheels would be equal regardless of the length of line to each wheel.
It could be the wheel cylinder sticking on the left wheel or the line to the left wheel may have a slight blockage or sludge build up inside the line.
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adjust them so they are the same.
this can be done with the brake drum on, i use a bicycle tyre lever, it works perfect.
adjustment at bottom of the backing plate. it should be covered with a small rubber grommet.
i normally adjust them so that when you spin the wheel by hand it does about 3- 4 complete turns.
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are both the rear tyres the same, as different tread and or tyre types can cause brake problems.
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looking for an ex ambulance based on the hj/x/z 2 tonner see photo
and collector of all things ambulance police fire and the odd hq to wb parts |
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thanks guys for the input...I have done everything above except do a brake fluid flush.....so I might try this....
I also put angle grooves in pads to reduce pad glazing....an old idea ....but workable.
There is a reason why manufacturers went to disc brakes ......
note some USA truck manufacturers still behind....
cheers
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Are the brake shoes fitted correctly front & rear. One shoe will have more brake material on it than the other. From memory, the shorter lining shoe fits to the rear of the axle, longer lining shoe to the front. (check to confirm) If these are incorrectly fitted, you could experience brake activation sooner than expected. Inspect the spring retainer clip for the rear shoes. Are they holding each shoe correctly to the backing plate? If a little loose, the shoe car float & bind when braking? Are the drums freshly machined? If a fine groove, or thread, has inadvertently been cut into the drum, you will experience the shoes binding as this thread will drive the shoe sideways. Length of brake line is irrelevant, hydraulics is a wonderful thing. Hope this helps. If not, go to a brake shop. Utility8  |
utility8
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one of the drums is a bit worn, cant remmeber which one.
might get both machined as well.cheers.
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If so, new shoes are real cheap & if yours are worn, will not be much chop on the newly machined drums. Wheel cylinders are also worth replacing while youre in there. Look under the rubber seal, if either are wet, replace em both. Then you know youve covered all the bases. Utility8 Edited by user Wednesday, 22 July 2009 9:30:55 PM(UTC)
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utility8
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Sounds like one of your wheel cylinders is seized, when you apply your brakes both pistons in the wheel cylinder will expand equally applying equal pressure to each shoe. If 1 piston is seized or binding one shoe travels twice the distance causing it to lock the brake. A miss matched brake spring can have the same effect too. Clawd HG Monaros for ever! Edited by user Saturday, 25 July 2009 7:06:12 PM(UTC)
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HG Monaros for ever!
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