[Healeys] Gearbox Bearing Pre-Load Shims/Washers

[Harold Manifold]

My Sideshift gearbox journey continues. The front and rear bearings on the
mainshaft are new and I was planning to replace the Plate (i.e. AEB3105)
and Spring Plate (i.e. AEC3178) that goes between the bearings at the bell
housing and the OD adapter housing ends. None of the usual suspects have
these parts available but do offer preload shims/washers in different
thicknesses. It looks like in the later BJ8 gearboxes two different
shims 22B152 and 22B153 replaced the Plate and Spring Plate used in earlier
gearboxes.

This begs the question. Will 22B152 and 22B153 fit my earlier sideshift
gearbox? I am assuming one would use Plastigage to figure out the shims
needed to get a pre-load on the bearing.

Any insight and suggestions appreciated.

Harold
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