footer200
Silver Member
Sorry it is dfkrug.
Stiffness could be bits of screen jamming this spool valve itself (tearing O-rings), or where the lever goes across the top of the axle housing it could be binding or getting stiff. Is or has the tractor ever been used in salty conditions? Depending how when where the tractor is used, mud, dirt and crud can build up in the area under the seat where the shaft goes across. I am NOT at my computer right now but search for 4300 rebuild by defrug ( not a hundred percent if that's the right spelling) ? And he has lots of great pictures of linkage and control valve taken apart.
To me the filter seemed redundant... and how ironic that the stupid filter caused a
problem that the filter was intended to prevent... Just plain stupid.
So as it stands I am going to break it down and pop out the mesh screen that is broken and toss it in the trash.
I'll then remove the control valve and see if I can visually find the problem before spending $500 on a new one.
One technical question remaining: The Rockshaft lever is extremely difficult to move up and down. Can this be
tied directly to the problem with the valve or do I likely have a concurrent problem with the "tension disc" that
I've seen mentioned in other threads.
any tricks on removing that spring pin? If I can't get it out I won't be able to
remove the short shaft going to the position feedback linkage.
So what do you think is the cause of that much rust? Especially since the tractor has not seen salt? How many hours are on your 4300? Any signs of that filter screen anywhere?