[T3] End Play Ick
Jim Adney
jadney at vwtype3.org
Sat Dec 17 21:06:15 PST 2011
On 17 Dec 2011 at 18:58, Know One wrote:
> So, how bad is end play of .014"?
It all depends one WHY it's so large.
Take the flywheel off and see if there are 3 shims in there. There
should be exactly 3.
If you have 3 shims, using both thumbs, push HARD on both sides of
the main bearing thrust surfaces. If the main bearing moves, it's
loose in the case.
Then, while one person holds a finger on the main bearing, another
person pushes HARD on the fan end of the crank. If the main bearing
is felt to move, it's loose in the crank.
If the main bearing is loose, the only solution is a complete
rebuild, an align bore, and new main bearings that are oversize on
the OD. Don't take a chance on driving around with a loose main
bearing. That can turn dramatic and expensive without warning.
If the main bearing is not loose, then you should be able to select a
different set of 3 shims that will put the free play in the right
range.
On your '67, there should be an O-ring in the socket that accepts the
end of the crank, but there should NOT be any shim, gasket or seal
between the end of the crank and the flywheel. If this was an earlier
engine or crankshaft that got installed years ago, then things might
be different. If this is not an o-ring flywheel, then you have
earlier parts and it can be really hard to be sure of what you've
got.
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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