BruceS. said: (quoted from post at 11:29:15 06/20/09) I had the rear end separated from the transmission on my F20 several years ago. I don't think you have to disassemble anything out of the differential. YOu can separate the whole back end as one unit by unbolting the bolts that attach the differential to the transmission. The main thing is to have the necessary blocking and hoisting equipment to secure everything as you're taking it apart. I believe those are all bolts (not studs) so you'll need to soak them good with PB blaster and then somehow get a wrench on the inside of the differential housing to hold the bold head. BTW,how bad is the leak? I have another F20 that I almost stopped leaking by using JB Quik Weld. This stuff works wonders.
The leak was not that bad but
1 - I have it this far apart already. Might as well finish the job.
2 - The tractor has been static since sometime in the mid- 1950's. Whatever leaks there are are only to going to get worse once things start moving again.
3 - I really wanted to get good accesss to the inside of the axle housing and to the differential so that I can get everything degreased and inspected. I suspect that the gear oil in the tranny/axle hosuing is the same oil that it left the factory with in 1929. It's like molasses.
4 - We've spent money on NOS sleeves, pistons, rings, and wrist pins. No point in cutting a corner now.
5 - As I mentioned in the original post, this tractor was a real basket case. Any with any sense would have scrapped it. I have three parts tractors now and all three are in much better shape than what I started with but there is a story to THIS ONE. Everything was so ad on this that I really want to pull it all the way down and inspect everything. The JB weld might be a handy option If I develop a leak after it's back together. Thanks for the tip.
I am in pretty god shape with equipment. I have been using a forklift, 6000# jack stands, and two engine hoists to handle this unit.
BTW - I've found that WD-40 is by far the most effective means for cutting this grease. Works much better that carb cleaner, diesel, kerosene or gasoline. I've also used the WD-40 as a pre-cleaner for my hands when I am done. Regular shop hand cleaners di absolutley nothing to remove this 80 year old gear oil.
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