Hi guys , here is an update on my 648 rear end project, got everything out and it didn't look as bad as I thought it would. So now I'm waiting on parts and seals,
Here are some pics.
Hi guys I have a question about my 648 tractor. About a month ago I was digging and removing dirt to remove a stone wall and driving to the end of my property and I the low gear would not engage anymore, no banging or grinding noises coming from it? So I finished the project in high gear with no problems. Do I need to replace the rear-end or is the differential able to be pulled out and replaced?
Sorry about the long story.
I would recommend not driving this under power another foot at this time.
Pull the axle cover off and see what has happened. If you are lucky, this is simply broken differential bolts that are then easily repaired. Left to their own devices, a broken diff bolt can do a lot of internal and case damage.
Well I pulled the cover and the brake idler gear chewed up and the bolts are broken and low gear just kinda floppy in there but looks
Ok. So what should my course of action be.
Well ... new bolts and nuts (as applicable). Reference the parts manual with your serial number/PIN and select the correct bolts for your specific machine:
Finding parts for the REAR ends is No Big Deal.. Essentially all of the tractors use the SAME rear end gears (there is a really new 'double bump' gear set that ingersoll used, but 95% are all the same like:
Find many great new & used options and get the best deals for Case Ingersoll rear differential at the best online prices at eBay! Free shipping for many products!
Find many great new & used options and get the best deals for Case Ingersoll High low gearset and fork at the best online prices at eBay! Free shipping for many products!
Be patient working in there... My first 646 came to me with the diff bolts broken. Figuring out just exactly how to snake all that out of the housing took some time, and a variety of interesting language. Then it popped out, and I don't have a clue what I did differently. Same headache going back in.
Good luck. It isn't a hard project, just messy, and a little frustrating...
Well ... new bolts and nuts (as applicable). Reference the parts manual with your serial number/PIN and select the correct bolts for your specific machine:
Well I finally got it all pulled apart and not as much damage as expected 😅 so now I get to put it back together once I get all the parts and seals. Here are some pic's.
Well here's another update, the rear-end is back in and working great 👍 I was in a working mood so de-carboned the heads and cleaned up the valves lapped, all new gaskets. Ready to do some work with this 648 again.
Yes replaced all seals and split the manifold and resealed .all seems good so far.🤞
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