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Home > DIY - Tech Tips - Triumph Clutch Rubbers
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| Clutch
Tech - The Triumph Cush Drive- by Wes White, Four Aces Cycle |
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This
writeup by Wes White of Four
Aces Cycle original appeared on the
Jockey
Journal (a great source for research
on your vintage motorcycle project). Wes covers an
often neglected part of your clutch, replacing the
cust drive rubbers
Now
we are gonna go deeper inside your clutch that you
ever wanted to be. The cush drive in the center of
the Triumph clutch basket is made up of steel, but
inside there is a steel “spider” and a series
of rubber bumpers that help provide a cushion between
the torque of the motor and the clutch basket through
the chain. It is important when rebuilding your motor
to replace the rubber bumpers if they are worn or
torn up. Most of the time when the bikes have been
sitting for years the drive rubbers will need to be
replaced.
Warning,
it can be a pain in the butt to just get the screws
out that hold the top plate onto the center. The best
thing to do is heat them up with a torch to help get
them out. These screws are held in by a factory locktite
and it has had 30-40 years to get very hard. Sometimes
a torch and an impact driver are necessary to break
them loose. Don’t forget to re-locktite the when
you are done.
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| Once
you get the screws out, you can bang the center on a
hard surface a couple times to work the cover late loose.
Once that is out, it is VERY IMPORTANT not to just dump
all of the rubbers out onto the table and start to replace
them. It is WAAAAAY easier if you replace them one at
a time. The new rubbers are REALLY hard to get in because
of their rubbery quality and you will have to wrestle
them quite a bit. I start with one rubber and replace
them in a circle. |
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| The
best tools that you can use to get the rubbers out is
a scribe or a pair of needle nose pliers. The best tools
to help get the new rubbers back are a short screwdriver
and a C-Clamp. Put a small amount of grease on each
rubber before you put it back in, this will help it
slide into place. Get the rubber started just right
and then clamp it with the C Clamp. Turn the arm on
the clamp and it will mash the rubber into place. You
will find a LOT of tension while doing this so be careful
with your screwdriver and make sure that you do not
puncture the rubber pieces. |
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The
last one that you do is gonna be the hardest, since
you have renewed the rubbers in each spot, you have
increased the tension on all of them. It just takes
a lot of careful manipulation with a screwdriver or
blunted spade-type tool, then a little squeezing with
the C-Clamp and you can do it.
Now
put the plate back on and put some red locktite on
the screws and let it dry up nice. Now you have a
completely new cush drive.
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