broken tranny

2395 Views 9 Replies 6 Participants Last post by Hydriv, Mar 30, 2011

killer

Discussion Starter · Mar 20, 2011

hi members, I'm a new member and I'm excited to join this site. I've got a problem I hope someone can help me with.I've purchased a 1968 Case/Ingersoll compact front loader recently.Being a old used tractor,I expected there would be some issues. But I never expected what I found. First of all, when I got it home and started to use it, it was good. Then,as time went by, it started acting up.So, frustrated at my purchase, I put it outside for a while.Then I needed it to remove snow,(the main reason I bought it,)and when I went to use it, I noticed a stream of baby crap brown oil coming from the rearend.Upon further inspection, I found a large piece of cast iron had broke out of the rearend case.Now, I'm a good welder with a nice shop and could weld the case,but I'd rather replace it than repair it. Could anyone give me some advice on how to procede? Maybe a used one is out there and I could buy it or should I just repair mine? Any input would be greatly appeciated.
thank you
killer

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Hydriv

· #2 · Mar 20, 2011

Welcome to the site, Killer.

Let's start at the beginning.

The breakage you suffered was likely caused by the failure of the 4 bolts inside the trans-axle that sandwich the carrier between the Hi-Range gear and the Lo-Range gear. You do not need a new housing. You must support the frame of the tractor on jackstands and then remove the entire trans-axle assembly from the tractor.

Once that is done, you must dismantle it. At this site, we have a TECH section that will help you out with certain manuals. Use the serial number of your tractor to determine the correct PARTS MANUAL. That will allow you to see an exploded diagram of the trans-axle. Then, go to the SERVICE MANUAL section and find the trans-axle bulletin that outlines how the trans-axle is dismantled. Word has it that Case used cast steel to make the housings. As an experienced welder, you should have no problems welding up the housing you have. Many people have done it in the past with success. I have not heard of anyone that had a problem with a repaired housing.

I suggest that you go to the FAQ's and select the "I need help with my trans-axle" document. It will explain quite a bit. Now, if after digesting all of that information, you have some more questions, then by all means return to this thread and ask away.

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cp7

· #3 · Mar 20, 2011

Hey killer welcome to the forum. I checked into this same thing recently and the part numbers for the newer 400 series transaxle case and axles is the same as the newer 600 series. They started putting a third pipe plug for a fill level at some point and I'll bet that is the difference in the earlier part number. I'm thinking the trans should swap right up. They didn't start making the 600 series until the 70's so you should check your s/n against the charts. Whatever you do definitely put the new bolts in the diff.

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horton20

· #4 · Mar 20, 2011

I have fixed several of these welding up the hole,and you will need a new set of bolts,not hardware bolts. I have also changed the housing,the housings are all the same for the most part, just put all your gears in the new one,the orbital motor is different on the 400 200, and the axle flanges, the rest is the same. have fun Steve or horton20

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ByCo

· #5 · Mar 21, 2011

I think everyone is assuming that we're dealing with a 600 series tractor but the infamous Model Production Year chart doesn't show the 600 series prior to 1972. May be you should post the tractor model and serial number just to be sure that this isn't a 100 series that someone added a loader too.

ByCo

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Hydriv

· #6 · Mar 21, 2011

Killer erred by posting 1968.

He has a 648 loader tractor.

Byco....the 600's were introduced in 1972. They were not made previous.

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killer

Discussion Starter · #7 · Mar 29, 2011

guys, where do i submitt my serial numbers to find out just what year my tractor is?
killer

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ByCo

· #8 · Mar 29, 2011

You can look it up on the chart here:

viewtopic.php?f=17&t=113

ByCo

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gator_rider2

· #9 · Mar 29, 2011

Killer my 646-78 on Tag means its 1978 does yours have 648-number if so thats year made.

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Hydriv

· #10 · Mar 30, 2011

Killer, Nice to see you back here.

If your tractor left the factory as a Loader/tractor and did not have the optional flotation package, then you can substitute the housing from a 200 or 400 model.

The drive motor and axle shafts from a 200 are wrong for your tractor but everything else should match. Use your serial number to pinpoint the correct parts manual in the Tech section and that will give you all the part numbers. Then if you come across a trans-axle from a 200 or 400, get the seller to reveal the model and serial numbers of the tractor that trans-axle was removed from and then cross-reference the part numbers to verify everything will work.

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