Hey all, I have a 1967 3020 diesel and my brake valve has started leaking a little. It's leaking around the boots, and I was wondering if I could replace the two o-rings per pedal and install new boots while on the tractor. I don't have the time to remove the entire valve for a full rebuild right now and had a friend say you could replace the o-rings(#45&50). May try a full rebuild this winter but for now I need the tractor to continue working for me. Any advice is appreciated.
Taking the valve off isnt a big problem but is it possible to do the repair im talking about without tearing it completely apart?
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You'll have to remove the floor-board to allow the brake pedals to swing back far enough to remove the cover(#55). To do this, the 3 bolts(#56) will have to be removed. These 3 bolts also retain the bottom housing to the top housing. The gasket(#1) will most likely tear; and leak fluid when assembled.
This is the reason for my first reply.
2019 JD Z540R, 54" cutting deck w/MulchControl™
1984 JD 750 Tractor 1971 JD 15 Chainsaw, ← hasn't run since ~1975
Ok I gotcha. So you recommend a full rebuild when I get the available time?(Probably this winter) Is it a very difficult task to rebuild them? What all do you replace when you rebuild them? The brakes work fine, it just leaks a little and I despise leaks. I have the mechanical knowledge to do it(Just rebuilt the motor and new clutch). I just have never been in one of these brake valves. I have a big JD tech manual which I have not looked at for info on the rebuild yet