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John Deere Tractors Discussion Forum
Show Parts for Model:

'56 420w hydraulics

Author  [Modern View]

12-12-2013 17:53:27

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will it hurt to put some kerosene in hydraulics to thin the oil for subzero operation?

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12-18-2013 16:46:14

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 Re: '56 420w hydraulics in reply to boler76, 12-12-2013 17:53:27  
I would not recommend this as I have learned the hard way that putting kerosine or deisel knocks a lot of gunk loose and will plug up the small orifices in the touchomatic leaving you with nothing but leaks everywhere and no lift....As I have heard before and now a believer don't mess with it if it ain't broke.

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12-13-2013 05:22:01

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 Re: '56 420w hydraulics in reply to boler76, 12-12-2013 17:53:27  
Not the foggiest reason why you would want to thin hydraulic oil. There isn't even a filter to burst.

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12-13-2013 05:11:25

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 Re: '56 420w hydraulics in reply to boler76, 12-12-2013 17:53:27  
The M manual says to only put Kerosene in the TOM system to clean it. I would agree that the 10 wt. should be fine. I plow with my MT in the winter and have 10 wt in there and have not had any issues with operation. I am in MA and have plowed with it at 10 degrees before any windchill. Looks like I might get to this weekend!

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Dave H

12-13-2013 04:27:59

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 Re: '56 420w hydraulics in reply to boler76, 12-12-2013 17:53:27  
I thought the book called for 10W to start with. When I had mine i never operated it sub zero but in my opinion the 10 W should be thin enough.

me I would not do it. I used diesel once to do a flush like the book said and I had leaks like niagra falls on the rock shaft.

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12-14-2013 13:31:30

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 Re: '56 420w hydraulics in reply to Dave H, 12-13-2013 04:27:59  
the reason I want to thin it is that it takes forever to warm the oil up enough to stop the pump from labouring and I have been using it in temp down to minus 20f Thanks for all the input

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12-14-2013 14:14:58

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 Re: '56 420w hydraulics in reply to boler76, 12-14-2013 13:31:30  
Drain and fill with synthetic oil.

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