Posted by Dan Bear Kelley on March 16, 2008 at 11:51:36 from (206.53.20.159):
Does anyone know at what S/N International changed the front cover bolting patterns for the distributor adapter? Hmmm. Maybe I should elaborate a little more. I've got a 1951 M:
I've heard that for very late M's, a SM live hydraulic pump will bolt right up.
I've heard that for early M's, a SM live hydraulic pump will NOT bolt up.
So, at what S/N did International make the change?
I've heard that it's easy to fill the old hole, and redrill and tap a new hole, to put a SM pump on an earlier M.
I've heard that the best course of action is to replace the front plate to get the SM bolt pattern on an M.
(Opinion) Is the first option really as cheesy as it sounds?
I've heard that a specially hardened cam gear is needed for the SM pump, so as not to strip the timing gears.
I've heard of people going for years with the old (less hardened) cam gear without problems. (Probably not in my case with a front loader)
I've heard that the newer hardened gear was actually in later M's after a specific S/N.
So, at what S/N did International make the change to the cam gear?
Does that seem to cover all the bases? I know I'm forgetting something.
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