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John Deere Tractors Discussion Forum

4020 brake valve

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Red Whiskers

01-24-2023 14:46:44

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Working on a 4020 for a friend. One of the plungers on the brake valve is froze. How big a deal is it to rebuild that unit? If it's froze will I be able to clean it up to work? Does anyone over reconditioned or worst case do we have get new? Thanks

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tim s

01-24-2023 15:51:25

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 Re: 4020 brake valve in reply to Red Whiskers, 01-24-2023 14:46:44  
When the boots go bad it lets water down into the plunger are and the stick,, most of the time the plunger is too rusty to clean up..you can mail me for help,, or ship it to me,, I can service it and bench test it here deerepowersystems1@gmail.com

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01-25-2023 03:24:04

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 Re: 4020 brake valve in reply to tim s, 01-24-2023 15:51:25  
This site or its twin ASAP offer reconditioned valves. Worked good on my 3010

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