Posted by Wardner on July 12, 2009 at 14:36:25 from (4.154.245.123):
In Reply to: SMTA SHift lever posted by GordoSD on July 12, 2009 at 08:12:07:
I was working on a 400 shifter yesterday. I just went out to check the end play on several tractors including some SMTA's. 3/16 is about right.
The hole in the shifter lever has to be oblong to allow the lever to move laterally. I think that maybe the spring is shot and it permits the end of the shifter to move the rail just enough to pass the rail detent. When that happens, the shifter cannot settle back into the rail notch and, at the same time, is not permitted to return to neutral. The force to compress the spring should be about 50 lbs.
My current problem with shifters is that I cannot find any 5/8" welch plugs. I had to make my own by slicing off some 5/8 round bar wafers on my band saw. They are currently being held in place with RTV.
I am not using the shifter at this point. Plans are to connect it to either the sliding gear in the belt pulley gearbox or, with any luck, to a dog clutch that would lock the right hand bull pinion shaft to the differential carrier. This would give me a locking rear end.
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