The rear seal is in the bellhousing that bolts to the back of the block. It is also possible that this bellhousing is loose where bolted to the engine block, although we have not seen this problem in several years.
You will have to split the tractor. Work on a flat surface. get two floor jackes, some jackstands and some blocks of wood.
Put some wedges (we use cold chisles) to keep the front axle from pivoting (between the axle and the chassis on each side.
Remove the fiberglass front hood/cowl and all the wire connections form the front half of the tractor. you will wan to lable them. Remove the front drive shaft (watch for the balls in the drive line. you have to remove the rubber boot and collapse the cover onto itself to access the ends of the shaft, then slide one end out while compressing the spring on the other and lower the shaft.
look for lines, wires. Oh yeah, throttle linkage, hydraulic lines etc that cross the line of separation at the bellhousing and disconnect them. unbolt the bell housing bolts and with the brakes locked on, roll the front end away from the rear.
remove the clutch, flywheel and finally the bell housing portion of the engine, the seal is there. We have them in stock. Use lock tight and check how long the threads are going into the block when you replace the bellhousing, install the flywheel, clutch. Good time to look at the attachemtn of the throw out bearing fork to its shaft. some only had one roll pin and could break, some had two concentric (one inside the other). If all is well, the fun part is lining up the TWO spine shafts with the cluth and getting the tracto ro mate up.
We take a part of a PTO shaft and engage the PTO gears so we can rotate the splines during the remating of the halves. It can go in 10 minuites or an hour. Dont force it.
I'm sure others will fill in gaps I miss or may even have a thread on this somewhere with some pictures. Maybe you are the guy to document the process with pictures and post them here or on CTOA dot net?
It is not as bad a job as it sounds. No worse than pulling a small block V8 out of your first car...
