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More stuck arms, please help

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Mark Dickinson

02-22-2001 12:19:44

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A little query for the hydraulics experts out there.

I've just got a 1952 TEF20 for general work and maybe a little showing, unfortunately it has a slight problem, the arms are stuck up in the air and will not go down.
I've removed the inspection plate on the right hand side, and when moving the draft control lever the control valve hardly moved at all ( about 1/8"), after a bit of movement by hand I have maybe 1/2" movement when operating the draft control. Is this enough?
I've drained the oil out of the transmission (probably 85% oil 15% water!) and flushed with deisel as per Zanes instructions to other people with the same problem, but they're still up there. Any ideas?
One more point, when I first looked at the tractor the arms lifted happily but didn't go down, the guy I got it off said it need a bit of weight to go down. When I picked it up the arms were down(maybe 3 weeks between the two). Since getting it I raised the arms, they went up nice and smoothly but have since stuck(about 4 weeks in the air). Does this give any clues? How did they drop last time?

Sorry if this is a bit of a long question but I need to get this sorted so it can start to earn its keep.

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Ray,IN

02-22-2001 20:15:33

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Re: More stuck arms, please help in reply to Mark Dickinson, 02-22-2001 12:19:44

Check the oscillating control valve under the PTO shaft at the rear of the pump. It may be removed without draining the oil if you don't mind getting greasy. This valve releases the excess pressure while the lift is up. It's commonly called the relief valve, and wears out with use. If it was under water, it may be corroded shut. New ones are available if it's shot. This is just a shot at your problem, I hope it solves it! Good luck, Ray,IN

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