Michael --
Thanks for the insights. These details were what I was looking for. The
bearing and fork were removed prior to the welding, so I suspect the
settling grease scenario is the most likely. The transmission sat on my
garage floor for about five months over the winter. At this point I'll wait
and hope for the better of the two possible outcomes.
Thanks again.
Dean Mericas
1965 TR4 (CT 37089 L)
1973 Volvo 1800ES
Ann Arbor, MI
-----Original Message-----
From: Michael D. Porter
To: Dean_Mericas
Sent: 6/28/2000 1:50 AM
Subject: Re: Throw-out bearing noises
Dean_Mericas wrote:
>
> Although I pulled the engine and transmission for the job, the only
work
> done on either was removing the clutch pivot arm to have the hole for
the
> slave actuator rod attachment welded up and redrilled.
Okay--big question--did you leave the throwout bearing on the arm when
it was welded up? If so, it is possible that a welding arc, going to
ground through one of the balls in the bearing, deposited a bit of
material from ball to race or vice versa. That would cause the noise you
describe.
If the throwout bearing was removed before welding, it may only be that
what grease was in it has settled over time, if this was an extended
project. If that's the case, the noise may go away as the bearing gets
used more--if it has a chance to heat up a bit, the grease will again
flow around all the balls in the bearing.
But, the whirring noise is typical of two or more dry balls (now doesn't
that sound like a problem for the urologist! <g>) contacting each other.
The general prescription for now is to leave it for a while, keeping an
ear on the noise to see if it gets worse or better. If worse, you have
your answer, if better, you still have your answer. <smile>
Oh, yes, it's not necessary to remove engine and transmission to replace
the throwout bearing--just the transmission, and it can be done from
inside the car with the tunnel removed. About a 3-4 hour job at a
reasonably relaxed pace. If the noise gets worse, get another bearing,
send the wife shopping and do it while she's gone. <smile>
Cheers.
--
Michael D. Porter
Roswell, NM
[mailto: mporter@zianet.com]
`70 GT6+ (being refurbished, slowly)
`71 GT6 Mk. III (organ donor)
`72 GT6 Mk. III (daily driver)
`64 TR4 (awaiting intensive care)
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