[s-cars] S-CAR-List Digest, Vol 75, Issue 42

[mtgadbois at aol.com]

 Varon,

I had something similar happen to mine about 6 years ago.  As I recall the gear pulley broke apart in pieces.  
This, of course, caused the various engine parts to kiss.  It also took out oil pump cover which required dropping 
the oil pan, which, in turn, required the cross member to be removed or lowered.  Lots of fun, fix yours now.

I sourced a used damper and pulley and installed the bolts with blue lock-tite.  That was at 101K miles.  Last
summer I needed to change the water pump (at 155K miles) so I did the complete timing belt service.  It went really fast this time.
I decided to replace the pulley with a new one.  I probably didn't need to as the one installed still looked perfect.  
Needless to say I again blue lock-tited the new one in (4 small bolts with lock washers).  Also I noticed almost 
all of my oil pan bolts had come loose, actually lost one.  They too received the blue lock-tite treatment this time 
around.

Regarding the mega torque, I'm sure others will cringe but I just use a 4 foot breaker bar and give it about a pull
that my calibrated arms say is 80 to 100 ft. lbs at 1 foot.  

Mark near Chicago




Date: Mon, 18 Jan 2010 23:05:53 -0600
From: "Varon H. Fugman" <vfugman at globaldialog.com>
Subject: [s-cars] vibration damper (harmonic balancer)
To: <s-car-list at audifans.com>
Message-ID: <A340BDBF752E453C80BCCF47FEC505BD at GT5228>
Content-Type: text/plain;   charset="iso-8859-1"

I traced my engine start-up/shut-down growl-clunk-freewheel noise to the
vibration damper?it, or maybe just the outer ring, is loose and can spin
independently of the serpentine belt pulley.  I?m trying to figure out what
is going on mostly by feel? not a lot of room between the vibration damper
and the radiator.  I think I?m going need to remove the front bumper and put
the radiator into ?service mode? to get a little better access.

 

I?ve studied Bently, ETKA, a timing belt writeup, and the list archives
trying to understand how the vibration damper and pulleys are assembled.
I?m trying to figure out if (1.) my vibration damper has come ?unglued? such
that the outer ring is now separate from the inner hub or (2.) did the 4
bolts that hold the crank pulleys together fall out or (3.) both?

 

If the 4 bolts are in place, shouldn?t I be able to feel the bolt heads?
Reaching down, I can feel the main crank bolt, but around it I feel holes
rather than bolt heads.  I?m wondering if the shop that did my timing belt
~18 months ago reused the old lock washers and the bolts all loosened and
fell out?

 

I need to come up with a parts list and repair plan.  I?ve farmed out the
timing belt on this car both times, although I did the CPS myself without
trouble (thanks to the marvelous illustrated writeup!) so at least I?m a
little familiar with the top ? of the timing belt now. :-)  I am a little
intimidated by the high-torque crank bolt, though, 

 

I would appreciate any input from anyone that has had vibration damper
failure? or from anyone familiar with the crank pulley assembly. Thanks!

 

Varon

?95 urS6

 


 

=