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If fitting disc brakes to a tonner, is the load sensing valve compatible to the disc brake cailpers and master cylinder or should I take it out? The ute will not be carring any loads.
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Good question. These usually freeze up anyway. I suggest you talk to a brake specialist, as since HQ-WB's didn't have rear discs on a tonner there is no precedent. However, I think VS ones are the same and hence one could assume that it is OK to leave it.
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Hi Guys.
I think he is talking about adding rear discs, because he is asking about the load sensing valve. Only late HZs & WB one tonners had these & front drums weren't fitted to any cars after the HJ.
To answer Peter's original quest
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So what is the one on the HQ? I thought it was a proportioning valve.
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The one that is being discussed is located on the chassis above the diff, and has a chain attaching to the top of the diff. As the ute load lightens the diff pulls on the chain and gives less braking effort to the rears.
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Thanks for the replys. I might go and talk with the brake fellows but the VS idea seems sensible I will just have to check piston sizes. Most one tonners with the disc conversions (HZ-WB)seem to forget about the load sensor but driving a tonner with no we
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Chain attached to the diff....
Trust Holden to go hi tek
You could always fit an adjustable proportioning valve but it would mean having to get out and under to adjust it with/without weigth.
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You could go one better, and be absolutely sure by fitting current model VY 1-tonner front discs and use Commodore rear discs. That way you could fit the proportioning valve (I think the VY has one) off the Commodore. And while you're at it fit a WB State
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You could go one better, and be absolutely sure by fitting current model VY 1-tonner front discs and use Commodore rear discs. That way you could fit the proportioning valve (I think the VY has one) off the Commodore. And while you're at it fit a WB State
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