-------------- Original message from Randall --------------
> I could be wrong, but I think the only difference is which side the zerk
> exits on. I don't believe the geometry of the link changed. AFAIK late TR4
> had the same geometry as the 4A, but zerks in the trunnions and hence
> identical vertical links.
I'm sure it is more than the location of the zerk. For the 4a-6, there is a LH
vertical link and a RH vertical link. There is also a LH trunnion and a RH
trunnion. The TR4 uses the same links on both sides, and the same trunnions on
both sides.
Irv
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