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John Deere Tractors Discussion Forum
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4020 camshaft replacement

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Joe5020

05-14-2006 06:59:54




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I am working on a friends late model 4020 (side console), which has a broken camshaft- the oil pump locked up one cold morning and stripped the oil pump drive gear. The question I have is will a cam and oil pump from a early 4020 work? I have used ones but the end of the cam were the gear goes on is a little bit different and the oil pump drive gear is not as wide as the original. Any help would be appreciated. Thanks Joe

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G/MAN

05-15-2006 07:40:57




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 Re: 4020 camshaft replacement in reply to Joe5020, 05-14-2006 06:59:54  
I wouldn't even think about putting a used camshaft in there, if that's what you're contemplating. It's a long way into that camshaft if you have problems. And if you're already going with new, get the right one for that engine and bypass any "good deal" on an earlier camshaft. The cam runs around $400 from Deere, and new lifters (once again - don't even think about running old lifters on a new camshaft) are around $11 a piece. You might be able to find "will-fit" parts from various sources for less money, also.

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Mike M

05-15-2006 11:42:58




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 Re: 4020 camshaft replacement in reply to G/MAN, 05-15-2006 07:40:57  
I agree spend a little now and save alot later.

Think of it as protecting your investment. Afterall money spent on 4020's is a good investment not like throwing it away on other things we tend to buy.



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Gerald J.

05-14-2006 08:37:01




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 Re: 4020 camshaft replacement in reply to Joe5020, 05-14-2006 06:59:54  
Not much interchanges between early and late engines. The blocks are significantly different and I recall that the cam shaft gears and mounts are different. I have seen a service bulletin commenting on the cam gear differences. They have different shop manuals and different parts books.

You'll likely be much happier fitting a late cam shaft assembly. No cobbling for end play and all that.

Gerald J.

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