3-Point Hitch 4310 3 point hitch problem

   / 4310 3 point hitch problem #11  
I have a problem with 4310. my hitch wouldn't raise up. I had pressure oil to the belly mower and loader so I checked the 3pt. control valve under seat I removed valve found a small pieces of wire coils that look like a small spring from a ball point pen, small chunks of o-ring and pieces of fine screen had fouled the control spool valve.
I don't know where these pieces came from my 4310 doesn't have the inline filter to rockshaft, I haven't had a chance to check the suction screen under tractor yet. I don't thinks they could have passed through the spin on filter, and the svc valves. any ideas???
 
 
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