This is amusing. Here we are, almost 50 years after the cars were
built, puzzling over the changes to the electrical systems. As you went
to the Lucas parts book, I was inspired to go to the TD Service Parts
Book. It's not as helpful, giving only one MG part # for all years, and
it's not a useful Lucas #. I wonder when MG went to the larger
capacity dynamo--suppose it was when the regulator and fusebox were
changed? That shows at car #8142 in my book, which is earlier than I
would have guessed.
For further amusement, check out Horn-high note. What do you suppose
"Sundry parts, 2 sets, 17H5001" might have been?
In the parts book, the greaser is referred to as the oiler, unlike the
owners handbook. I read in a TSO several years back that the original
rear bushign was --forget the name but might have been oilite-- that was
soaked in oil at Lucas for a week before installation. In service, then,
the grease was OK. But, the article pointed out, replacement bushings
that may have been reamed to fit, would have the porous surface of the
oilite bushing ground over so that the entrapped oil, if any, would not
be released to the spinning armature. Thus, the author observed that he
used oil, and that he made a point to put oil in the hole after every
long run of the car. I had the rear bushing of the dynamo replaced a
couple of years back. Before I installed the unit I stood it on end in a
tunafish can of oil, just to give that bushing more time to absorb.
Bob
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