Still confused on this transmission seal...

jwitty

Member
So that upper seal is leaking on the transmission side. And people are saying I don't need to split the transmission to replace it. I don't see how you don't have to split it. Can someone please explain in detail how to do this? Or maybe I'm talking about a different seal then what people thought. I'll attach a pic of where it's at on the tractor. Thanks
 

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Drop the belly pump, remove the belt pulley,
undo the 4 bolts for the yoke/cross
assembly, unbolt the pressure plate and tilt
to side to allow the clutch shaft to drop
free. Unbolt the input shaft assembly and
pull forward. Tear it apart on the bench to
get that seal out. I'd replace the pilot
shaft bearing at this point as well.

This does not require splitting. It has
been said the 11" M pressure will drop out
without splitting. The 12" pressure plate
is too big to pass but will move to the
side. The clutch disks will drop clear.

Chris B.
 
heres some pics of my stage 1 super m, basically the same tractor. belly pump has to come out. then unbolt the coupling at the back of the
input shaft to get to the seal. while you are in there replace the belly pump drive seals on the trans and the belly pump. best to get an i and t
manual to walk you thru it.
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I know where it's at and I did it without splitting anything but you can do it anyway you like.
 
Once the belly pump is out of there you have a TON of room, and the input shaft of the transmission comes apart in the middle.

The M was designed so you could replace the clutch in the field, and as a side effect you can also do some of the transmission work without splitting it too.
 
(quoted from post at 08:59:11 10/17/17) Once the belly pump is out of there you have a TON of room, and the input shaft of the transmission comes apart in the middle.

The M was designed so you could replace the clutch in the field, and as a side effect you can also do some of the transmission work without splitting it too.

Does the fluid need to be drained?
 
nope, a little may drip out, just put a pan under it. iirc, the m holds 14 gallons of 80-90wt or what ever is on sale at the farm store. you may want to crack the drain plugs loose and check for water. sometimes there can be 3 or 4 gallons of water in the rear end from condensation over the years.
 
(quoted from post at 17:00:46 10/17/17) nope, a little may drip out, just put a pan under it. iirc, the m holds 14 gallons of 80-90wt or what ever is on sale at the farm store. you may want to crack the drain plugs loose and check for water. sometimes there can be 3 or 4 gallons of water in the rear end from condensation over the years.

When I drop the belly pump, will fluid come out of that? And does anyone know the part number for the seal? And does the belly pump need a gasket or no?
 
Drain the pump. It can leak, well, spill, the fluid out of the fill pipe if you drop the unit over. No gaskets to mount the pump, don't have seal number handy, but if its not leaking, I wouldn't worry about it.
 
Depends on the fluid level. If it is correct loss will be minimal, but the transmissions on these old rigs frequently condense water in them, even if stored inside. If they are stil worked hard plowing disking, etc. the water gets evaporated, if only light duty work it does not, and you may have 40 gallons of what looks like a milkshake in there.
 

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