1985 KH28 help

td14addict

New member

Equipment
1985 Kubota KH28, 1941 IH TD14, 1980 Massey 30B TLB, 1967 Massey 135, 70 Bolens
Apr 8, 2012
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Truro, Nova Scotia, Canada
hello, we recently bought a 1985 Kubota KH28 Excavator, it seems as though the relief valve is not set up properly. if i curl the bucket all the way in or out and max out the cylinder it stalls the machine. i also built a thumb for it which also stalls the machine if i let it max out(was already plumbed for it), this is at 1500-1800 rpm so i know its not just to low rpm.
so i was wondering if anyone on here is familiar with this model, or with this issue on Kubota machines.
heres a picture of it, the machine is 11'6" outside to outside, it must have been built for ditching (appears factory), also seems to sit up higher then any other kubota i have seen like a newer highwalker forestry machine.

thanks
Stefan
 

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