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Can you identify the Luk vs. Freudenberg DMF while installed??

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Old 02-23-2011, 06:16 PM
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Laker
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Default Can you identify the Luk vs. Freudenberg DMF while installed??

Hello Gents,
I am afraid that my 91 C4 Cab may still have the original Freudenberg DMF.

I did see this comment on an earlier thread:
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A mechanic could see through access holes under the car to see if the update has been done. The newer LUK flywheel will have a bolted on starter ring gear instead of a welded on one (Freudenberg)
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Can anyone tell me what I have from the picture? Is this torx bolt that of a LUK? Thanks in advance.
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Last edited by Laker; 02-14-2012 at 08:39 PM.
Old 02-23-2011, 06:22 PM
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Jim Richards
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Not sure of the answer; however, you might not worry about it. I used to have a '95 993 and the (Luk) DMF failed around 45kmiles. Go figure. If yours doesn't make a clunking noise when you back off the gas pedal, your DMF is probably just fine.
Old 02-23-2011, 06:42 PM
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altarchsa
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Hey Laker, hard for me to tell, but it looks like this photo is of one of the 9 bolts that attach the pressure plate to the flywheel. You might have to get a different angle on a view hole (more from the rear looking forward), or remove the starter, to see the starter ring gear.
Old 02-23-2011, 06:44 PM
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altarchsa
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P.S. If there are 3 groups of 3, it's the pressure plate bolts. I think the ring gear bolts are evenly spaced.
Old 02-23-2011, 06:46 PM
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Laker
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thanks for the info, and comments guys - I will try some different angles tonight



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