620 John
Member
Long story short I finally got around to pulling the crankshaft out if my '51 B to fix flywheel splines or replace crankshaft all together. Then I got the idea of pulling the shifter quadrant off to get a look at the transmission since I was this far in. Boy what a surprise I got! I wiggled the sliding gear shaft and it was REALLY loose. I could move it the right side of the shaft about 3/4". Turns out the balls in the ball bearing that the right side of the sliding gear shaft rides on were GONE. The bearing is #12 JD7660 in the PC. The hi/low range shifter gear #9 has wore a groove about 1/8"-1/4" deep into the main case. With the shaft being this loose I think the only thing keeping the gear from slipping was the shifer forks. The only real problem I noticed with the transmission was it would pop out of 3rd gear. It did make some noise but I'm pretty used to noisy 2 cylinder transmissions. Thank goodness I didin't put this tractor to heavy work.
I do have a dumb question. I'm trying to take the nut off the left side of the sliding gear shaft and I was wondering if the nut has left hand threads? Or am I just misinterpreting the manual? SM2004 states exactly as follows: "Remove cotter pin and take sliding gear shaft off left (threaded) end of sliding gear shaft." I looked at the shaft but it doesn't look like left hand threads. Either way I can't get the nut to budge. Thanks in advance
I do have a dumb question. I'm trying to take the nut off the left side of the sliding gear shaft and I was wondering if the nut has left hand threads? Or am I just misinterpreting the manual? SM2004 states exactly as follows: "Remove cotter pin and take sliding gear shaft off left (threaded) end of sliding gear shaft." I looked at the shaft but it doesn't look like left hand threads. Either way I can't get the nut to budge. Thanks in advance