Today, I finished putting our tractor back together. The low range gear lost about a third of its teeth and in order to replace it, the tractor had to be split in two. To do so required draining the fuel, the hydraulic fluid, and the transmission fluid and removing the hydraulic reservoir and rear controls and the fuel tank. Also, the linkages for the transmission, the brakes and parking brakes, the PTO, the 4WD were disconnected. When that was complete, front end was set on blocks and the transmission was unbolted from the shuttle shift assembly. The rear end was then wheeled away from the front.
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Once the transmission was fully exposed it was apparent that the rear end would have to be completely disassembled. This meant pulling the brake assemblies, the differential assembly, the hydraulic unit, and the left and right half axles.
Figuring out how to do this was a bit of a challenge as there is no shop manual. I had to rely on the parts diagram and my general knowledge of things mechanical. Needless to say, there were a few missteps along the way.
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The hydraulic unit removed. I had to buy a 2t. shop hoist from HF to do the job.
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With the hudraulic unit removed, the rear half of the transmission was exposed. Everything except for the gold PTO shaft and the gearset at at the left hd to be removed.
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The front half of the transmission. The damgad gearis below the gear cluster shownand everything had to be removed from this section as well.
With the new gears in place, reassembly began. I thought that it would be comparatively easy but was oh so wrong. There is a specific order that the reassembly must be done. Altering the order meant significantly harder assembly or having to unassemble. With two steps forward, one step back, the tractor was finally whole again after 60+hours of work and 17 days elapsed.
To make things more complicated, the humidity the last several days has been excessively oppressive. Although I was working in the relatively cool barn, the floor was below the dew point so moisture was condensing on the floor. I periodically spread a layer of Oil Dry and swept the floor but that was only good for an hour or two. Myself, I changed clothes three times a day and managed to drop ten lbs. in the ordeal.
A brief test of all the functions was successful and the tractor is ready for work again.
Ulysses!.
John.