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  #1  
Old 05-01-2009, 06:01 PM
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Join Date: Apr 2005
Location: Central PA
Posts: 124
Stupid question

Who said there are no stupid questions? I even know the answer, so I'll ask in a different way..

My clutch is slipping, and no amount of bleeding, adjusting, or checking things has changed that. (but it is suspicious that is doesn't slip in the morning when its cool, but slips just fine when its warmed up)

The question is about the pressure plate.

Does everyone always replace them when doing a clutch disk, or are they so well built that only the disk typically needs replacing?

Patient is a '79 240D w/ 130k showing.
Either way, I'll be doing seals, disk, and T.O. bearing.

Yeah, I know.. its 30 years old.. live it up.
Its only money..
Nevermind.. I'll replace it.

But if people start writing in saying stuff like, "Ya know, I've replaced hunnerds of those 240 clutches, and I've never seen a bad pressure plate yet.", I might just reconsider..
but it is 30 years old..
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  #2  
Old 05-01-2009, 06:10 PM
ForcedInduction
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Quote:
Originally Posted by mwoodland View Post
Does everyone always replace them when doing a clutch disk
Yes. The pressure plate is a wear item just like the disk and flywheel, but it can't be resurfaced either.
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  #3  
Old 05-01-2009, 10:17 PM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Yes, I always replace all parts. If I go to all the trouble to drop trans and or pull the eng/trans, Iam going to replace disc, pressure plate, throw out bearing and pilot bushing or bearing.

Just went through this on my Datsun King Cab in nov, and the mercedes last month with the swap. problem I usually have with the Datsun is, the springs or fingers on the PP get weak. there is a tool to reset them to specs. nothing gaurantees how much life you will get from it, and as FORCED said it can`t be resurfaced.

The whole kit for the Datsun costs as much as the Disc for the MB. so I can see why someone would want to cut corners.

Charlie
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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

http://i30.photobucket.com/albums/c3...ilys/boobs.gif


Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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  #4  
Old 05-01-2009, 10:17 PM
Starstruck
 
Join Date: Mar 2009
Location: Iceland
Posts: 423
Change the disc, pressure plate and throw out bearing.
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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.
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  #5  
Old 05-01-2009, 11:23 PM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,037
It is standard operating procedure to replace those things together..
even if one is not past specs... the cost of taking it all apart to fix that part when it does start giving problems is not smart economics...

OH, and just for the record... things which ' wear in ' together like that... if they are not replaced or machined perfectly then they wear out the new items in short order..

Last edited by leathermang; 05-01-2009 at 11:26 PM. Reason: thought of more good info
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  #6  
Old 05-01-2009, 11:55 PM
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Join Date: Mar 2008
Location: Kent, WA
Posts: 1,189
Quote:
Originally Posted by charmalu View Post
Yes, I always replace all parts. If I go to all the trouble to drop trans and or pull the eng/trans, Iam going to replace disc, pressure plate, throw out bearing and pilot bushing or bearing...
I agree 1000%, and I always take the flywheel and have it resurfaced while it is apart. In my experience, if you don't you run about a 50/50 chance of having a grabby chattering clutch...

I haven't done any clutch jobs on MBs yet, and others who have will no doubt correct me if I am wrong, but that's my experience with dozens of other makes...
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1984 300 Coupe TurboDiesel
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2nd owner & 2nd engine in an otherwise
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~210k miles on the clock

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