Be careful with thread chasers. I was cleaning the threads in my Spider
flywheel a few years back with a Craftsman thread chaser. I did not
apply much torque at all and it sheared off in the hole! Might have
been a manufacturing defect, dunno. Anyway, was a royal pain in the
rear to get that out!
Kevin
Jeff Greenfield wrote:
A few comments regarding what Russ wrote below ..
No problem re-using the Flywheel Bolts. However, they and the holes in
the crankshaft need to be cleaned of the old Loc-Tite and any oil/grease.
DO NOT use taps and dies unless to clean bolts snd holes unless the
threads are damaged. There is something called a thread chaser which
is much better suited for this purpose as a thread chaser will clean
the threads without removing any metal which a tap/die will.
Here is one such rethreading set, I'm sure the same thing is available
from other sources for less.
http://buy1.snapon.com/catalog/item.asp?item_ID=56049&group_ID=1148
When re-installing the flywheel, use Red Loc-Tite on the bolts and
torque to spec. DO NOT use anti-seize here as you do not want the
flywheel to come loose (I've seen it happen and it's not pretty).
Lastly, if replacing the clutch, the 'right way' is to resurface the
flywheel and replace the pressure plate. Yes, you might be able to get
away without replacing the pressure plate, but do you really want to
risk having to pull the transmission again if it doesn't work as it is
supposed to?
Several years ago I had a GTV come into the shop with a pretty bad
clutch chatter. Yup, the clutch had recently been replaced at another
shop. They screwed up a lot of things, and somehow the pressure plate
was part of the problem as it didn't look like it had been replaced.
Another clutch replacement and resurfacing of the flywheel took care
of the problem.
Jeff
Sent from my iPhone
On Sep 12, 2009, at 10:57 AM, Russell Neely <[email protected]> wrote:
I reuse all the bolts from all locations. But then I am a cheap
bastar....
The six bolts that hold the flywheel to the crankshaft are extremely
hard. I found that when I drilled them for safety wire on my race car.
Be sure to clean all bolts with a wire brush on a bench grinder. The
factor apparently used something like Loc Tite on the flywheel bolts
and there
will be a glue residue on the bolts. Or at least the mid 1980's & later
spiders had Loc Tite type glue.
If you have a tap and die set, you can also clean and straighten the
threads by running a die down the bolts.
The only problem with cleaning bolts with a wire brush is the
galvanized
bolts. Any steel bolts that screwed into aluminum were plated. They
have a
slight gold color. I think that is cadmium. Cleaning the threads
can remove
the plating and allow galvanic action between the aluminum and the
steel. Use
Loc Tite, anti seize or even grease to prevent that.
The six 8 mm bolts (13 mm wrench) that hold the pressure plate to the
flywheel can also be cleaned and reused. In fact, I rarely replace the
pressure plate. I replace the clutch disk, the throw out bearing and
the
pilot bushing in the rear of the crankshaft.
One other thing to watch is the little ball nubbins on the rear of
the
transmission. The front of the drive shaft has a very hard steel
bushing that
centers on the ball on the output shaft of the transmission main
shaft. That
ball can wear off center and needs repaired.
Be sure to put grease in the pilot bushing and in the center of
the front
drive shaft when you put it back together. I also grease the teeth
on the
transmission input shaft so the clutch disk will slide freely and not
rust to
the shaft. And I grease the inside of the throw out bearing and the
clutch
fork fingers and the ball where it rotates plus on the end of the rod
from the
clutch slave.
OK, maybe more information than you need. Hope it helps.
Ciao,
Russ Neely
Oklahoma City
--- On Sat, 9/12/09, Frank Anigbo <[email protected]> wrote:
From: Frank Anigbo <[email protected]>
Subject: [alfa] Fly-wheel Bolt Reuse
To: [email protected]
Date: Saturday, September 12, 2009, 7:37 AM
Hello: Can the flywheel bolt of a GTV be reused when installing a new
clutch? Thanks in advance. Frank
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