440 tranny

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Howard Yoder
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440 tranny

Post by Howard Yoder » Mon Jun 30, 2014 6:19 pm

went to pull the transmission out the back but can't get the front lip where it bolts to the reverser over the crossmember pipe. It's real close to coming over the top but won't clear. Yhe only thing I know to do is take the rear engine monts off and jaack the engine up but afraid of the fan getting in the radiator any help would be greatly apreciated.

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wizner85
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Post by wizner85 » Mon Jun 30, 2014 6:51 pm

Did it that way once. What a pain it is. Almost better off pull engine and reverser out first...

I loosened the cross member c channel frame to round tube cross member ( this is the front cross member.) Then jacked te rear ofthe tranny in the air and torqued the bolts back down so the tranny lip cleared the cross member. The engine and tranny move as a single unit and fan won't hit rad that I remember.
Also final drives were out so nothing was attached to the rear cross member.
I did it two years ago so a little fuzzy.
440 ICD 64 blade & 8a gear attic winch
440 ICD 831 loader with scarifier and weights
420 62 blade 3pt
Looking for 24 scarifier and 440 log arch

Howard Yoder
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Post by Howard Yoder » Tue Jul 01, 2014 6:33 am

I hate to pull the engine but might have to have the finals off I did this on a 430 and it wasn't very easy either thanks

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Lavoy
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Post by Lavoy » Tue Jul 01, 2014 8:55 am

If you have both finals unbolted from the crossbar in the rear, you should be able to tilt the trans up enough to clear the rear crossbar. You have to block under the front casting, as soon as the tranny comes out, it gets nose heavy.
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Howard Yoder
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Post by Howard Yoder » Tue Jul 01, 2014 12:41 pm

I think I will try to unbolt the reverser and pull it with the tranny. I think something broke in the reverser so maybe it isn't letting the shaft pull out like it should and yes I did remember to block the front. Fortunaly I have another reverser that is rebuilt but unfortunally it is in a small housing so I will have to switch out the housing. Is the front shaft coming out of the tranny the same on a big one and the small one both came out of 440s Thanks Howard

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Lavoy
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Post by Lavoy » Tue Jul 01, 2014 12:44 pm

All the same, case is the difference. Shouldn't be anything broken or otherwise that can keep the shaft from pulling out that I can think of.
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Howard Yoder
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Post by Howard Yoder » Tue Jul 01, 2014 12:46 pm

Thanks

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Gil
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Post by Gil » Wed Jul 02, 2014 7:47 pm

I have pulled a transmission out the rear before (I had the final drives off). My moment of concern was pitting it back in when I wondered if it would line up properly going over the hump and not damage a bearing or seal. But being an old Harley rider, I did not force it, I just used a bigger hammer; pushed it and eventually it went in. I held my breath until I got everything back together, but everything turned out to be fine. Gil
JD440-ICD loader; JD440-IC bulldozer; JD440-ICD backhoe; JD440-I backhoe; JD440-I tractor; + five recumbent JD440-ICs

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wizner85
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Post by wizner85 » Wed Jul 02, 2014 8:57 pm

What do you mean by large and small housing? Different bell housing or different reverser housing. Didn't realize there were large and small.

Details on this would be great.
440 ICD 64 blade & 8a gear attic winch
440 ICD 831 loader with scarifier and weights
420 62 blade 3pt
Looking for 24 scarifier and 440 log arch

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Stan Disbrow
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Post by Stan Disbrow » Thu Jul 03, 2014 4:18 am

Hi,

There were two different transmissions. The earlier one has a smaller housing than the later one. Same with the reverser. Actually, there are a lot of differences between the early and late 440 now I think on it. You can see them all in the parts manual.

Stan

Edit: the early 440 was almost the same as the late 420 and the 430. But, the 440 went on past 1960 and they were developing what was later to become the JD series machines (both track and wheel, plus dozers, loaders and hoes), so a lot of changes occurred on the 440 as a result.
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Gil
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Post by Gil » Thu Jul 03, 2014 4:56 am

The "small" versus "big" transmission:

JD440 Serial # 440001 – 448000
M4256T “small” transmission used on earlier crawlers.
Has a fill plug on the right hand side of the case.
Has no top cover plate under the seat on top of the housing.

JD440 Serial # 448001 up (diesel introduced)
T11396 “big” transmission for all diesels and later gas crawlers after 448001
Has dip stick on top of transmission.
Has a cover plate on top of the transmission over the ring gear.
Has larger diameter studs (3/4 vs 5/8 ) to mount to the direction reverser, There is therefore a different direction reverser case casting (but the internal gears are the same).

Gil
Last edited by Gil on Thu Jul 03, 2014 2:41 pm, edited 1 time in total.
JD440-ICD loader; JD440-IC bulldozer; JD440-ICD backhoe; JD440-I backhoe; JD440-I tractor; + five recumbent JD440-ICs

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wizner85
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Post by wizner85 » Thu Jul 03, 2014 8:17 am

Got it - thanks for clarification.
440 ICD 64 blade & 8a gear attic winch
440 ICD 831 loader with scarifier and weights
420 62 blade 3pt
Looking for 24 scarifier and 440 log arch

Howard Yoder
1010 crawler
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Posts: 353
Joined: Mon Apr 04, 2005 6:53 pm
Location: Columbus Ohio

Post by Howard Yoder » Sat Jul 05, 2014 7:36 am

tried to pull just the trannyagain and couldn't get it over the hum so loosened the reverser and it allmost fell out the shaft going from reverser to engine clutch stayed in the clutch will have to open the reverser up and look in there when I get time but that wasn't good right now working on changing parts over to put other tranny and reverser in. Don't know what I was thinking but the other reverser and tranny are the big housings which will shave me a lot of time as long as I got the reverser right remember some one having a hard time with a brass washer in there reverser after I had rebuilt this one so hope I got that right I did follow the book which is unusual for me. The tranny was good except the bolts where stripped and the housing was messed up a little on top left side which was letting it move a little which maid me think the front shaft coming out of the tranny would be messed up but it looks fine.

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