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I didn't replace the case, but I did have about 90% of everything removed from it. The only parts remaining in the case were the rockshaft and the PTO clutch/shaft. On mine the ring gear bolts didn't get thread locker from the factory so they loosened up and then fell out or broke off. Getting the differential carrier out required the unit to be almost completely disassembled.
The service manual was necessary and really helpful, I didn't find any of the job too difficult. Having an engine hoist made getting the assembled unit off, and hanging it back on the tractor a lot easier. Probably took about 12-14 hours of actual time to do the job. Did take some time figuring how everything came apart and finding all the bolts. Reassembly went pretty quick.
Later years of the case were strengthened around the inner PTO races starting around mid 07 through 10. My 2305 is an 08 and it did have the newer, strengthened case.
The service manual was necessary and really helpful, I didn't find any of the job too difficult. Having an engine hoist made getting the assembled unit off, and hanging it back on the tractor a lot easier. Probably took about 12-14 hours of actual time to do the job. Did take some time figuring how everything came apart and finding all the bolts. Reassembly went pretty quick.
Later years of the case were strengthened around the inner PTO races starting around mid 07 through 10. My 2305 is an 08 and it did have the newer, strengthened case.