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Discussion Starter · #1 ·
I'm trying to find the relief valve on an old 300 garden tractor. I'm hoping to adjust the hydraulic pressure up a little for quicker response on my pull-type rototiller. Thanks in advance 馃憤
 

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Discussion Starter · #3 ·
Very cool. Looks like I'll take the seat pan off and see what I can see. Something's either wrong with this tractor or the brand new lift cylinder I bought is bogus. I can only get it to move a tiny bit after I start the engine, and then nothing. Plenty of oil and a new filter. Thanks for responding 馃憤
 

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Discussion Starter · #4 ·

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Have you verified the set screw is tight on the woodruff key/shaft between the lever and the hydraulic spool linkages?

sometimes if it鈥檚 loose it feels like your moving the lever but it鈥檚 actually just rotating on the shaft
 

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Discussion Starter · #7 ·
Well fellas, I finally found the problem. The two ports I was using (formally went to the front) just wouldn't work, so I switched the whole mess to the other two ports, and everything worked like it should. I have no idea what was wrong, but I only need 1 system for the tiller, so for now I'm good. I can get the cornstalks turned under and be done for the fall. I have an old JD dozer I'll rig up for snow if I need it. A big thank you to everybody that responded 馃憤
 

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Discussion Starter · #8 ·
Well fellas, I finally found the problem. The two ports I was using (formally went to the front) just wouldn't work, so I switched the whole mess to the other two ports, and everything worked like it should. I have no idea what was wrong, but I only need 1 system for the tiller, so for now I'm good. I can get the cornstalks turned under and be done for the fall. I have an old JD dozer I'll rig up for snow if I need it. A big thank you to everybody that responded 馃憤
 

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Discussion Starter · #9 ·
You could try plugging in a pressure guage to the front hyd outlets and see if you're building any pressure while working the levers.
I'm going to do just that when I get the tilling done, so I can rig that cylinder up on a dozer. I'm guessing that part of the control valve needs rebuilt.
 
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