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Allis Chalmers Discussion Forum

C Allis hydraulics

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Gary Mitchell

04-10-2016 08:49:27

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I have a C Allis that I bought years ago. It's mostly sat in the barn with a Woods belly mower on it. The mower raises manually. The C has a lever for a little hydraulic cylinder that is on the right side behind the driver. Nothing happens when I pull the lever, noise or otherwise. Can someone tell me what needs to happen in order to make this cylinder work? Thanks, gm

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Bob Bancroft

04-10-2016 15:46:27

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 Re: C Allis hydraulics in reply to Gary Mitchell, 04-10-2016 08:49:27  
Another thought; if someone has put heavy gear oil, or even half grease(like I found in one) your pump won't want to work. 20 weight oil, or hyd/trans oil.

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Dick L

04-10-2016 15:31:45

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 Re: C Allis hydraulics in reply to Gary Mitchell, 04-10-2016 08:49:27  
I bought 14 B's and C's that had set for a long time. After getting them to run none of the hydraulic valves worked. If you have checked all that old posted to check you will need to take the valve apart using an assembly drawing. I found rust, sticky crap, broken springs, spools in backwards and missing parts.

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04-10-2016 09:42:42

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 Re: C Allis hydraulics in reply to Gary Mitchell, 04-10-2016 08:49:27  
#1 you have to have the transmission full of oil as in up to the top of the fill plug on the side by the clutch pedal.
#2 The PTO has to be spinning or you have not hyd power.

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Gary Mitchell

04-10-2016 10:39:02

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 Re: C Allis hydraulics in reply to old, 04-10-2016 09:42:42  
Thanks Old. gm

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Bob Bancroft

04-10-2016 15:01:17

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 Re: C Allis hydraulics in reply to Gary Mitchell, 04-10-2016 10:39:02  
In case you don't know- you can get a hyd. lift bracket from Woods which uses your OEM cylinder to lift the mower.

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