Live Oak

You might want to run this by Chip. He is a wealth of information on these tractors.

ARTRAC

99 percent of the time the dropping of the 3 point is from the Oring and wipers on the lift piston. On this tractor, the piston can extend far enough past the end of the cylinder to expose the O ring and wiper, when the implement is lowered, it shears the o ring as it is forced back into the cylinder. This often happens after using something like a 3 point post hole auger, the user adjusts the stops on the rod that controls how high the 3 point will lift and... If the lift was not lifting, the pump could be suspect as could the quick connect fittings in line from the pump to the 3 point. (sometimes the check valves close off even when connected). The hyd pump does nothing else but run that lift on the 2420 without power steering. The filter is under the seat on the older models, inside the lift box under a flange on the top of the lift box that is attached by 3 bolts. It could be the valve but that is not real common. I have one in stock if you need it.

bigcountry1009

Thanks Chip, but I've already replaced those cylinder seals. It didn't help one bit. Still drops like a rock.

ARTRAC

Maybe this falls in the 1 percent? When you replaced the o ring and wipers, did you make sure that the stop was set so the piston would not over extend? it could be the new parts got damaged... or the oil is leaking out somewhere, could be the valve is not closing off properly...

bigcountry1009

Well, the stops were in place and adjusted in about 1 inch from the end of the rod. I noticed when I replaced the washers there really wasn't any wear on them. They looked like the new ones, just dirty. The big rubber o-ring was just slightly flat on the outside, but the two white plastic piston rings weren't any different. One thing I was wondering about though, the adjusting valve under the seat, the one that adjusts the fall speed, I remember my dad tightening it all the way down and it stopped the three point hitch completely, no lift or fall. If that is too loose, will it affect the hitch accually staying up?

chrpmaster

Yes

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rdisbrow

Did the valve adjustment solve the problem?

Affordable

Sounds like the problem is in the 3-point lift valve on the side, if it bogs down your engine thats not good, if it was just not lifting or leaking down I would say it's in the piston

We keep the parts if you need them

Tommy
Affordable Tractor Sales Co.
" Your Jinma Parts Superstore"
www.affordabletractorsalesco.com

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Tommy
Affordable Tractor Sales Co
"Your Jinma Parts Superstore"
www.affordabletractorsalesco.com