Posted by old fashioned farmer on July 31, 2013 at 18:58:56 from (99.148.192.156):
Howdy,
Got an issue with the 720 and wanted opinions on the trouble before I dissect this thing too deeply. A while back I did some work on the transmission, which required a removal of the flywheel. The tractor ran fine for a while after this with one exception. When going down a hill the tractor would free roll until it hit the bottom of the hill. It would do this in any gear. When the bottom was reached the tractor would take off again in the normal speed with no action by me. That is problem number one.
A while later a problem appeared with the flywheel. It would move out on its own despite my efforts to tighten it as much as possible. It is a replacement flywheel and not like the original with a nut and two tightening bolts on either side of the crankshaft. It has a splined collar inside and a big square nut to tighten. Along with the flywheel issue the tractor has developed a clunking sound in the motor as well as some oil coming around the pony exhaust pipe where it enters the big engine's breather pipe.
Whew!
I realize it is a bunch of stuff but I wonder how much is connected. The transmission work I did was to replace a bearing on one of the top gear shafts. Followed the service book to the letter. However, I'm sure I must have done something wrong or just have bad luck, ha ha. I appreciate any help, ideas or suggestions you can offer. God bless.
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