73 bobcat 843 bucket rail issue

[Brado77]

Hi guys new to this site. I have a 73 bobcat 843 I was moving snow for a couple hours and all a sudden I wasnt able to lower my bucket rail or tilt my bucket up. I turned my machine off and was able to lower the bucket rail. I had to put a log under the bucket and lower the rail till the bucket hit the log and I was able to get the bucket back to level. Any ideas? I checked the hydraulic fluid it was full. Changed the hydraulic fluid filter thought it might be clogged but that didnt work either. Very basic machine so I'm hoping in nothing to major. Any suggestions would be much appreciated. Its been snowing alot and my driveway is becoming difficult to drive up. Thanks guys.

 

[Tazza]

Your aux hydraulics isn't stuck on is it?
As you were able to adjust the position of the bucket with lowering the arms on to a log, i assume you moved the foot pedal to allow the cylinder to move into the desired position, that means teh valve and cylinder have to be good.