JDcrawlers Messageboard

I have tried to match up the Orings to similar ones in size, they still leak and leak by badly. I have tried to contact my local John Deere parts dealer, as weak as a few other sources but anything they have found has been obsolete and they can't match up something similar, they all tell me best bet...

Hey everyone, I have a Hydraulic question about my JD450, looking to get some insight I purchased this 1969 JD450 crawler loader for $400, got it running and moving. I don't know too much about them, but willing to learn. this unit has a 93A Backhoe on it, the spools on the control valve leak badly ...