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There are more spacers between the front eye and the mounting bracket =
than I would expect to see, different alts seem to need different =
thicknesses to get the alt pulley square to the water pump pulley which =
is the criteria. The sliding tube in the front eye is at it's fullest =
extent so there may be some bending stresses on the eyes, but slackening =
the bolts through the rear bracket to the block may take care of that. =
Fan belt looks wide but 10900 is the correct size for all but the latest =
CBs and the RBs.
If the belt is slack it would normally spin on the alt pulley with a =
shriek rather than the crank or pump pulleys so cooling shouldn't be =
affected, but if it's loose then you need to check the adjuster link =
under the alt and see if it is at its fullest extent or not.
PaulH.
----- Original Message -----=20
Look at the picture. This alternator is in my 1969 MGB GT. It is =
charging OK, but the engine is running hot. I tried today to tighten =
the fan belt which was way too easy to turn by hand without moving the =
belt. I could not tighten it enough to stop the fan from slipping. It =
looks jury rigged to me, but I have no other examples to go by. By the =
way, the engine is from a 67 B according to the serial number.
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<DIV>There are more spacers between the front eye and the mounting =
bracket than=20
I would expect to see, different alts seem to need different thicknesses =
to get=20
the alt pulley square to the water pump pulley which is the =
criteria. The=20
sliding tube in the front eye is at it's fullest extent so there may be =
some=20
bending stresses on the eyes, but slackening the bolts through the rear =
bracket=20
to the block may take care of that. Fan belt looks wide but 10900 =
is the=20
correct size for all but the latest CBs and the RBs.</DIV>
<DIV> </DIV>
<DIV>If the belt is slack it would normally spin on the alt pulley with =
a shriek=20
rather than the crank or pump pulleys so cooling shouldn't be affected, =
but if=20
it's loose then you need to check the adjuster link under the alt and =
see if it=20
is at its fullest extent or not.</DIV>
<DIV> </DIV>
<DIV>PaulH.</DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV><BR></DIV>
<DIV dir=3Dauto>Look at the picture. This alternator is in my =
1969 MGB=20
GT. It is charging OK, but the engine is running hot. I =
tried=20
today to tighten the fan belt which was way too easy to turn by hand =
without=20
moving the belt. I could not tighten it enough to stop the fan =
from=20
slipping. It looks jury rigged to me, but I have no other =
examples to go=20
by. By the way, the engine is from a 67 B according to the =
serial=20
number.</DIV></BLOCKQUOTE></BODY></HTML>
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