Re: 300 Utility transmission help needed ASAP

Posted by mhmalcolm on October 30, 2006 at 13:55:57 from (66.66.107.166):

In Reply to: 300 Utility transmission help needed ASAP posted by DrJK on October 30, 2006 at 12:45:25:

If you can move the shift lever from side to side the normal amount when it is in the neutral position, you have a broken shift fork. My Dad's 350, which has the same transmission, broke two shift forks over a 30 year span. You have to remove the transmission top cover/hydraulic reservoir to replace it. You'll need to drain the hydraulic reservoir by disconnecting the steel line that goes to the power steering, remove the pressure/return line manifold that goes from the engine mounted pump to the reservoir, disconnect the hydraulic hoses from the fast hitch cylinder, and if you have remote valves, disconnect the couplers where they are mounted to the tractor. The hoses and the couplers can stay connected to the valves if I remember right. Then make sure the gear shift lever is in the neutral position, remove all the bolts from all the way around the cover, and lift off the cover with a hoist or another lifting apparatus. The shift rails and forks are mounted to the bottom of the cover. The broken fork will usually be sitting in the gear hub down in the transmission. I think I set the cover on its side to remove the shift rails. Be careful not to lose the detent balls or springs when you remove the rails. You can use heavy grease to hold them in place when reinstalling the forks. The cover and reservoir assembly is HEAVY, so be careful. Sometimes you can weld a broken shift fork, but it has to be absolutely perfect. I would recommend getting a new one or a good used one instead of welding it. The replacement shift fork, cover gasket, and probably some new o-rings for each end of the hydraulic manifold should be all the parts you need. When you reinstall the cover it can be a little tricky getting the shift forks into the slots in the gear collars as you lower the cover. Good luck!

Replies:

• Re: 300 Utility transmission help needed ASAP DrJK 19:13:59 10/30/06 (0)

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