John Deere 440IC Reverser

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Farm Mechanic
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John Deere 440IC Reverser

Post by Farm Mechanic » Sat Apr 03, 2021 8:42 am

I know this topic has been discussed on this forum before but I could not find results for the same issue I’m having, sorry in advance if I’m repeating questIons. The reverser was working fine yesterday, I backed the dozer in and shut it down, when I started it to pull it forward the engine stalls immediately when I put the reverser in forward and let the clutch out. Is there any hope of fixing this without a teardown? I plan on flushing the reverser, filling with new oil and running through the adjustment procedure unless you all think that’s pointless. Any help, suggestions, or support is greatly appreciated.

Thanks,
Seth

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Re: John Deere 440IC Reverser

Post by dtoots1 » Sat Apr 03, 2021 10:01 am

First question i would have...does it snap into forward position? any other criteria..noise..looseness?

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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Sat Apr 03, 2021 12:20 pm

It miraculously started working so now I’m really afraid. It snaps in but not the 20lb force like it’s supposed to be. It has been whining more than normal lately.

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Re: John Deere 440IC Reverser

Post by Lavoy » Sun Apr 04, 2021 7:53 am

If the engine stalls in forward, highly likely is it input shaft bearing in the transmission. There is nothing in the reverser that can create drag in forward realistically. I would stop using the crawler immediately, and start the tear down. Running it will just add amount of money that will be needed to fix it.
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Re: John Deere 440IC Reverser

Post by dtoots1 » Sun Apr 04, 2021 8:03 am

Looks like Lavoy has the answer!!! so is good to know!...while reverser is out good time for that to be checked/rebuilt! and probably engine clutch as well..

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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Sun Apr 04, 2021 10:25 am

That’s not what I wanted to hear, but I guess I have no choice but to fix it. Thanks for the replies.

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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Sun Apr 04, 2021 10:58 am

Would it be easier to remove the transmission instead? We rebuilt the reverser, engine and installed a new main clutch a few years back. As it sits now the tracks are off and one final drive removed.

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Stan Disbrow
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Re: John Deere 440IC Reverser

Post by Stan Disbrow » Mon Apr 05, 2021 4:42 am

Hi,

Unfortunately, no. The transmission is the central piece. To get it out, everything has to be removed. Engine, reverser, both finals and anything which might be on the rear (winch, 3pt).

Since we are thinking input shaft bearing, pull the engine and the reverser and you can leave the finals on.

Stan
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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Mon Apr 05, 2021 7:17 pm

Is there any way to check this bearing before disassembly?

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Re: John Deere 440IC Reverser

Post by JWB Contracting » Mon Apr 05, 2021 8:49 pm

Pull the shifter on your transmission and then check for wear and movement. The tranny can come out form the back, did so on my own ICD which had a bad second gear.
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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Tue Apr 06, 2021 4:35 pm

You all were right. Input shaft bearing is loose. Started tearing it down tonight, should be able to remove transmission tomorrow evening.

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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Wed Apr 07, 2021 4:35 pm

What is the thin metal sleeve that slides over the spline and inside the steering clutch throw out bearing for?

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Re: John Deere 440IC Reverser

Post by dtoots1 » Wed Apr 07, 2021 6:49 pm

Believe you are talking about the throwout bearing carrier...t/o rides on that for steering clutch..also be sure and set the pressure plate with the jd7 gauge

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Re: John Deere 440IC Reverser

Post by Lavoy » Thu Apr 08, 2021 7:57 am

Throwout tube, it is what the throwout bearing carrier rides on.
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Re: John Deere 440IC Reverser

Post by Farm Mechanic » Fri Apr 09, 2021 3:45 pm

How many thousandths of shims does it normally take to shim the final drive output shaft?

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