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1949 cub hydraulics

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JD

03-15-1999 07:22:51




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I have a 49 cub with a woods mower on it. When I raise the mower deck, it jumps up and down after it has reached
the height where it is set. Is there a check valve sticking
or is there some other problem that could be causing this.
Also, it seems to put more of a load on the engine when I
lower the deck than when I raise it. Could this be the result of the same problem? Any help would be appreciated.

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seth

03-18-1999 08:49:00




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 Re: 1949 cub hydraulics in reply to JD, 03-15-1999 07:22:51  
my family's '58 cub does the same things. in terms of the harder-to-lower-than-raise, when you lower the lift, it compresses a large spring(to the left of the seat). my best guess is that the spring is very stiff, and helps the attachments to float. when lifting, the spring is helping, when lowering, it has to be compressed. that is my best guess...
as to the "jumping up and down," perhaps your problem is different, but ours does something similar, and I don't know why. it has never posed any serious problem for us, so we just don't worry about it. good luck...

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Mey (NH)

03-15-1999 07:36:31




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 Re: 1949 cub hydraulics in reply to JD, 03-15-1999 07:22:51  
JD, I not an expert on this, though I have helped a out a few guys with the touch control systems on their cubs. I wood start simply by making sure fluid level is up there, if not, top up and bleed the sytem. Next would be to instal a PSI guage on the upper port at the manifold and see what the readings are. Next would be a rebuild of the main unit. Feel free to email me on questions and such. Mey

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