Posted by Ken Macfarlane on December 10, 2009 at 14:41:01 from (156.34.142.102):
In Reply to: Kubota M6800 steering posted by Catskill Pete on December 10, 2009 at 14:00:41:
If you build a little test rig to watch the pressure and close a valve to build pressure you should be able to diagnose the pump. Just tee'ing a gauge in won't show you anything, its an open centre system.
If the pump builds pressure the orbital is probably dead, the torsion spring broken or something stuck. The only 2 places I've seen the orbital on the Kubotas is down near the axle with a steering shaft or bolted to the firewall. Should be pretty obvious by following the hydraulic lines from the steering ram back.
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