>The early TR-6s have a solid spacer on the pinion gear to maintain pinion
gear preload.
***********************
A spacer and a number of shims
***********************
>The later years, 1975 -76 have a collapsible spacer.
>What are the advantages of either one or disadvantages?
***********************
The solid spacer (in my opinion anyway) provides a more stable preload as
the bearing wears and is a bit more precise if done correctly.
The main advantage of the collapsible system is cost and ease of assembly.
It is much quicker (read cheaper) to assemble and set up than the old shim
type
***********************
>Why did they change from one to the other?
***********************
As always, the bottom line, cost :-)
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