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John Deere Tractors Discussion Forum
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Break in for a JD 4440

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Le9102011

01-24-2023 19:06:15




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Hello all, I have a JD4440 that just got a long block engine replacement from Abilene Machine, and i was looking for some pointers on how to break in the new engine, The guys at Deere told me that I will need to hook up a disc or renovator and run the snot out of it for a few hours, which is contradictory to what i tell people when they purchase a New Diesel truck. I know a lot of people on here have farmed with Iron Horse Tractors, and it will only really be used to farm our tractor club field of 8 acres go to various shows and pull a hay wagon.

Tractor only has 3500 Original hours, and was told it lived a non abused life to cultivate cotton in Peoria Arizona. Tractor was parked due to a liner seal leaking and engine was ran hot a few times, with ditch water as coolant so that is the need for the long block. Block was toast due to corrosion head had a crack but crankshaft was fine.

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shanker

01-27-2023 19:30:41




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
Quoting Removed, click Modern View to see

Zinc dialkyldithiophosphate (ZDDP) in gear head terms is an additive that was formerly used in engine oil's to help minimize wear especially at the interface of a hydraulic flat tappet lifter, and camshaft.

It was significantly lowered by EPA due to lowering emmissions.

If you want to go down the rabbit hole, here are the two best online resources:

Link

https://540ratblog.wordpress.com/

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620 John

01-26-2023 17:13:51




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
Last fall I installed a reman engine in a JD 7830 which is a 6.8 engine. What WTW posted is pretty much what JD's instructions are that come with reman engines. I'll have to see if I can find those instructions again.



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WTW

01-25-2023 16:41:08




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
Use it, Don't abuse it.
Don't baby it and Don't beat it.
The more variation in load the better.
If you had a short field to plow and had to turn around in short passes would be perfect. The most important thing is to make sure engine is up to normal operating temperature before you work it. If it was mine I would run the first 100 hrs with break-in oil. Do not let it set and idle.



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Tx Jim

01-25-2023 04:27:58




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
I had pistons/liners installed in my 4255 year before last. It had ""JD break in oil"" in it when I picked it up at JD dealership. I drove it home & attached it to my JD 467 rd baler. I started using it to bale hay. Rings must have seated because it uses no oil between oil changes



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tim s

01-25-2023 04:15:49




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
Make sure that you use a Zinc additive in the oil,, and run it like you did before..I rebuild 15 or so each year,,sent them home to work and they break in fine...



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dwag

01-27-2023 19:08:10




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 Re: Break in for a JD 4440 in reply to tim s, 01-25-2023 04:15:49  
Whats zinc additive? Where do you get it? Doesn't Deere break in oil contain it?



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craigco

01-25-2023 03:06:14




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
Last 2 engines replaced at work came with break in instructions. One was a 6 cylinder cat motor the other a 4 cylinder Cummins in a skid. Both said run at 3/4 load for 8 hours with minimal idle time.



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matthies

01-24-2023 20:05:55




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 Re: Break in for a JD 4440 in reply to Le9102011, 01-24-2023 19:06:15  
Whenever I overhaul one in my little shop it goes to the dealer or an independent shop I know well, and gets ran on a dyno for 8 hours or close to it.



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