[Healeys] Cam end play

[Mike Tobin]

Putting the lump back together and doing up the front plate.  How is the
cam located front to back?  There's no thrust bearing/washer just the
locating plate which doesn't look like a piece that deals with rotating
friction.
I just drive the cam sprocket home, tighten it down and the locating plate
takes care of it? The factory manual just states the ever-informative
"reassembly is a reversal....". It just doesn't feel right - too easy.
Cheers,
Mike Tobin
Pepperell, ma