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Bad Control Valve?
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<blockquote data-quote="bbill" data-source="post: 93938" data-attributes="member: 13396"><p>I have a L555 with 3400 hrs. It was sitting for about two months over the winter without being used. When I used it I noticed the bucket tilt pedal did not fully return to the center position when tilting the bucket back. It would creep until I tapped the pedal. It only does this when tilting the bucket back. I thought one of the shaft bushings might be sticking. I removed the peddle assembly and found two bushings that were rather tight. After I got them working freely I tried moving each of the two connecting rods going to the control valve. The boom connecting rod moved easily and I could feel it stop solidly at either end of its travel and it would snap back to the center when I left go of it. The bucket tilt connecting rod felt "mushy" at either end of its travel and did not return to the center very well. After I put everything back together and cycled the bucket tilt, it still creeped up unless I tapped the pedal. I am assuming there is a problem in the control valve. If so, I guess parts are available to rebuild it. I looked on the Messick website for parts. They list the body but I didn't see any listing for a rebuild kit. Any suggestions where to look for one? Also, it looks like a lot of things have to be moved to get the control valve out. I think I saw somewhere on this forum it has to come out of the bottom. I have a service manual coming, but I thought I would post this question and see if there are any tricks or tips that are not in the service manual. Thanks for any help, Bill</p></blockquote><p></p>
[QUOTE="bbill, post: 93938, member: 13396"] I have a L555 with 3400 hrs. It was sitting for about two months over the winter without being used. When I used it I noticed the bucket tilt pedal did not fully return to the center position when tilting the bucket back. It would creep until I tapped the pedal. It only does this when tilting the bucket back. I thought one of the shaft bushings might be sticking. I removed the peddle assembly and found two bushings that were rather tight. After I got them working freely I tried moving each of the two connecting rods going to the control valve. The boom connecting rod moved easily and I could feel it stop solidly at either end of its travel and it would snap back to the center when I left go of it. The bucket tilt connecting rod felt “mushy” at either end of its travel and did not return to the center very well. After I put everything back together and cycled the bucket tilt, it still creeped up unless I tapped the pedal. I am assuming there is a problem in the control valve. If so, I guess parts are available to rebuild it. I looked on the Messick website for parts. They list the body but I didn’t see any listing for a rebuild kit. Any suggestions where to look for one? Also, it looks like a lot of things have to be moved to get the control valve out. I think I saw somewhere on this forum it has to come out of the bottom. I have a service manual coming, but I thought I would post this question and see if there are any tricks or tips that are not in the service manual. Thanks for any help, Bill [/QUOTE]
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Bad Control Valve?
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