There is minor variation in the lengths of the spring sets, that can be very
critical to the final assembly and operation of the OD.
There is also a very critical timing of the gears....it is possible to
assemble 'out of time'....
Sure is satisfying when it all comes together. Clunk! Wrench Time!
> I have always set the overdrive unit in a cinder block with the open end
> facing upright using only the four outer springs. After lining up the two
> sets of
> splines in the overdrive, I lower the transmission down and move the input
> shaft slightly, trying not to misalign the two sets of splines.
>
> Sometimes, it would go right together, and other times it took several
> tries.
> When the second set of splines suddenly engage, I am leaning on it
> desperately trying to get a nut on one bolt before it jumps out again.
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