I learned this evening that the main shaft on a sport scout 640 trans. Does need a thrust washer on each side of the slider portion. Military manu ref; 47-3, 2(f), and 47-4, 6(a). If thrust washers are used only on the right side this will not allow the main shaft to stand proud of the threaded portion of the driver gear. Which would cause the kicker to ratchet (ie. drag). *nasty noise.... and your end float inside of 0.010 and the cluster gear also. All happy and nicety-nice now. A modern lip seal on right side should hopefully thwart oil company profits. Avail from 48 up? Wish I had known. Custom made one. Darn.... sealed bearing installed now. Poped inner seal off and am using a magnetic drain plug.
Should be a sweet treat to ride with new trans gears. I'm getting gitty. Going to try a 20T front sprocket for hwy work. Stock is 18T. Will loosen up that foot clutch pedal drag for more accurate feel. Thanks Tom.
My SKF double race hemispherical bearing (left side) seems to be holding up well. This bearing allows for inner primary cover misalignment. ahhh... of my little 85mph tractor. I'm certain factory would've spec'd one if it were around.
Blah, blah, blah... So this leaves me wondering is a chief set up with thrust washers only on the right hand side? Anyone know off-hand. I'm being lazy here.
Should be a sweet treat to ride with new trans gears. I'm getting gitty. Going to try a 20T front sprocket for hwy work. Stock is 18T. Will loosen up that foot clutch pedal drag for more accurate feel. Thanks Tom.
My SKF double race hemispherical bearing (left side) seems to be holding up well. This bearing allows for inner primary cover misalignment. ahhh... of my little 85mph tractor. I'm certain factory would've spec'd one if it were around.
Blah, blah, blah... So this leaves me wondering is a chief set up with thrust washers only on the right hand side? Anyone know off-hand. I'm being lazy here.
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