On an early serial number 544E, the service manual says the service brake valves are not re-sealable. Deere on-line parts updates them to the later serial number valve to the tune of $980.00 each plus several fittings to adapt to the older system. My question is, has anyone attempted to or found a way to re-seal the old valves. I know that just because the manual says no, that does not always mean it can't be done. Both valves are leaking and I would like to save the customer some money if possible. Thanks.
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