DURING THE SUMMER MONTHS I HAVE A 6' FINISH MOWER ON THE BACK OF MY TO-30, BUT THIS WINTER WHEN I WENT TO PUT ON THE SNOWBLADE, I BROUGHT MY HYDRAULIC LIFT ARMS UP AND NOW THEY WON'T GO DOWN. I HAVE TRIED ADJUSTING THE CONTROL SPRING AND THAT DID NOT HELP. I ALSO TRIED PUTTING THE 6' BLADE ON THE TRACTOR, THINKING THAT THE WEIGHT OF THE BLADE WOULD BRING IT DOWN AND IT DIDN'T BUDGE IT. I DIDN'T HAVE ANY PROBLEMS LAST YEAR WITH IT. ANY SUGGESTIONS.
Re: TO-30 HYDRAULIC LIFT WON'T GO DOWN in reply to MIKE E, 12-16-2003 12:45:10
Mike, it would appear the control valve is not working properly as it controls the direction of the oil for both positive and negative pressure. I would start looking to see if the control fork, or "T" handle became disconnected. Open the inspection covers and try to spot something or try to move the control valve(PTO off) in some way.
Re: Re: TO-30 HYDRAULIC LIFT WON'T GO DOWN in reply to phil fenner, 12-16-2003 13:12:34
PHIL, THANKS FOR YOUR HELP. I FORGOT TO MENTION THAT WHEN YOU MOVE THE CONTROL LEVER ALL THE WAY DOWN TO LOWER THE ARMS IT POPS BACK UP ABOUT HALF WAY WHEN YOU TAKE YOUR HAND OFF OF IT, AND IT NEVER DID THAT BEFORE.
Re: Re: Re: TO-30 HYDRAULIC LIFT WON'T GO DOWN in reply to MIKE E, 12-17-2003 06:53:24
Mike, yes it sounds like something has come loose or is binding in the fork/control valve mechanism. There is control fork return spring that could have come off or the control valve is stuck. But looking in the inspection holes may show the problem, hopefully.
Re: Re: Re: Re: TO-30 HYDRAULIC LIFT WON'T GO DOWN in reply to phil fenner, 12-17-2003 09:52:58
Its just the control valve is stuck, when you move the lever to lower instead of moving the control valve as it should do its just stretching the spring on the control fork. Remove any implement you may have on the lift linkage and then remove one of the round side covers, inside you will find the long fork that runs from top to bottom. At the bottom is attached to the control valve, with the engine switched off try moving the control fork backwards and forwards to see if you can free the control valve. Dont be rough with the control valve or you will break the thin link inside. If this doesnt free it off, you may need to remove the hydraulic pump, but that is extreme. If you need to remove it email me and I will send you instructions on how to remove the pump safely...granada1 at hotmail dot com
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