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You know it's just nonsense such as this why I strive do as much of my repair work as possible .

Say ,a thought occured to me .If these hydro motors are of standard design you might be able to save a buck or two finding them on line .Northern carries quite a few as well as other sources .

Well I suppose if it were an under or substandard motor it could be a throw away IE not rebuildable . Higher end stuff like Vickers or Parker can often be rebuild a zillion times for a fraction of the cost of replacement .The price on Vickers is most likely the highest but relatively speaking...

I believe that chipper Tom had was a Morebark or something like that and it was the valve that caused the problem . The dealer claimed it was okay but Tom sent the darned thing back ,figured it had more problems that what the dealer admitted to . It fed just fine on 4 inch stuff but would not...

The valves are a possibility . I had a bad one on a splitter I worked on last winter . Actually I would have never thought in a million years a valve could go bad but in fact it was . A call to Northern hydraulics and about 90 bucks fixed the problem .

Hydraulics can drive you nuts at times ... Not to sidetrack but recently I experinced problems on the splitter I am building .Wrong pump ,wrong rotation .I tried my hillbilly enginerring to retro fit the damned thing but to no avail . Bite the bullet and order the correct one .:whine:

--so buy an old gun ,they seldom wear out .

That is one of the feed valves if I get the picture clearly .Kind of a safety deal . Oh Lawdy troubleshooting a hydraulics problem is almost as bad as a chainsaw at long range over the net --but we try ;)

Aha ,hold the phone .In series ,one after the other or in parrellel like the lift cylinders of a dozer . In one after the other ,it won't make any diff because if one bypasses the other one still gets full pressure and flow .In tandom one could bypass to the tank and rob flow to the other ...

Put a tee in the line and plumb in a gauge . I suppose the wear plates could give up the ghost if it's a gear motor .If It's orbital I haven't a clue . Just seems odd for it to die on the vine out of the clear blue like that .:?

Not normally ,they do it over time . You obviously have something bypassing and lowering the pressure . Every hydraulic system has a pressure relief valve somewhere in the system ,start there . Check the filter ,anything that could hinder the flow . Oh say ,I just remembered some thing .Some...