Sherman Transmission combo

mikewood869

Well-known Member
We installed a Sherman Transmission combo (the combo had one broken tooth on the gear going to the transmission) into a 1950 ford 8n yesterday and we forgot to fill the Sherman once the tractor was all put back together again, is there anyway to fill it without having to split the tractor or will the 4 speed trans + rear end fill the Sherman?
mvphoto18435.jpg


mvphoto18436.jpg


mvphoto18437.jpg
 
I know of no way to fill the Sherman without splitting the tractor.

Yes, the transmission will fill itself but it will take time to do so. I would expect bearing damage prior to proper filling.

Dean
 
Would a whining noise come from this or just from the gears? We also did replaced the clutch.
https://www.youtube.com/watch?v=FoE_EmD7ohE
 
Since it's an 8n just pop the top cover on the tranny shifter plate and jack up the rear of the tractor until oil covers the sherman gear that goes into the main trans. Let sit a day on two and sherman
will fill. When off the jacks the fluid will return to normal position. If broken tooth was not repaired before instillation than a trans rebuild will be in your future.
 
Will be jacking up the tractor today. I'm hoping that the fourth of the tooth will hold. In post # 2 you can see the chipped tooth. If that tooth was completely gone the gear would have been replaced be the Sherman was put in.


On a side note, why can't I edit post after I submit a post. It says I need to come back later, which doesn't work. I could edit post # 1 so I had to make post # 2.
 
(quoted from post at 09:16:07 06/19/18) Will be jacking up the tractor today. I'm hoping that the fourth of the tooth will hold. In post # 2 you can see the chipped tooth. If that tooth was completely gone the gear would have been replaced be the Sherman was put in.


On a side note, why can't I edit post after I submit a post. It says I need to come back later, which doesn't work. I could edit post # 1 so I had to make post # 2.

The edit feature is disabled and has been for well over a year. So double check before hitting submit ;-)

TOH
 
I think I might have to split the tractor again, I dropped a washer for the shiftier down the side of the Sherman. I have a small magnet but I couldn't get it down the side.
Its very tight in there to access the two back bolts in there (the left and right bolts by the transmission). I can get to the front one though.
 
Pop the steering box off and access from the top. BTW you can
also take the top cover off the Sherman to fill it but you kind
of have to move it to the side cause it's very hard to get the
top cover out of the steering box hole and lining everything
back up is a real pain. Did an 841 like that. It was a fight all
the way. Probably would have took less time to split it. Stupid
stubborn especially when someone sez you can't do that.
 
I'm Going to probably going to split tomorrow, your right its been a battle trying to get the cover off. I might take off the top cover to see whats in it to while I'm there.
 
If you pull the top cover off the sherman and it has straight cut spur gears than pull the sherman out and fix the chipped tooth cause in will be a creeper and likely worth a lot more than your whole 8n
tractor. You could sell the creeper, buy a combo and have enough money left over to buy another combo.
 
Well ended up splitting the tractor which took a hour to a hour & half to split. I almost got a chance to take out the Sherman, but the brake rod with that half moon, I forgot about. I took a hammer and rod to the shaft that is used for the breaks. Currently the half moon is stuck (it looks like a half moon that is stuck) in there. With the half moon in there I can get the shaft half way out of the break peddle. If I hammer the shaft back in, I can see the half moon in the slot for it about a penny worth. I'm guessing I can use a pickle fork to get the break peddle off (not sure). Once that's off I then can take out the bolts holding the Sherman in. Any ideas?
 
Turns out that there is an issue, the Sherman is in there how it was installed into the tractor before hand (tractor with the backhoe). I'm just go to put the tractor back together again, and jack up the rear end and fill the tranny with hydro and left the tractor alone for a week or two.
 
Today, the tractor was put back together and added at least 1 1/2 quarts of tranny fluid. We have a nice steep hill (taller than ramps) so I moved the tractor on to the hill in low four. The tractor will sit on the hill for a few days or a week which the fluid should move into the Sherman and fill it. Currently the way the tractor sit, the fluid sits two inches from the top of the tranny cover. I'm guessing this should be long enough.

mvphoto18602.jpg


mvphoto18603.jpg
 
This is also a good way to find out if your input shaft seal
leaks. Whenever I change out a Sherman before bolting the
tractor back together I will tilt the bell housing down put a
pan under it and let it sit over night. If nothing in the pan by
morning I'll put it back together. I know a resplit is no big
deal but why do it twice.
 
A week would have too long, the Sherman filled overnight and I guess the fluid filled the bellhosing, we added more hydraulic fluid to the transmission when the tractor was on level ground (the transmission was low). The tractor shifts and drives still. The hydraulic fluid must have gone through the front shaft (going to the clutch) when the tractor was on the hill. We noticed hydraulic fluid coming out of the plug under the bellhosing when driving the tractor around, I put a pan under the bellhosing to catch the hydraulic fluid. We probably ran the tractor max, 15 minutes. I will check the level of the transmission again. Is there another way to check the level of the hydraulic fluid besides the dipstick (I heard something about pulling out a bolt)?
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top