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Old 11-23-2005, 01:00 PM
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Join Date: Aug 2001
Location: Texas
Posts: 79
Need flex disc help.

The front flex disc on my 1995 e320 is shredded, I've dropped the cross member. How do I replace the flex disc from here?

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Old 11-23-2005, 07:36 PM
Hatterasguy's Avatar
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,318
Ok this is for a W126 so take it with a grain of salt, although it should be similer on a W124.
Unbolt the driveshaft from the flex disc and push it back a bit. Then unbolt the flex disc from trans. The flex disc should drop right out after that. They stick sometimes and may need a whack to help it along.

Just repeat the process to install. MB gives a torque spec but I just made mine tight since I didn't have a torque wrench handy.
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Old 11-23-2005, 08:28 PM
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Join Date: Jun 2005
Posts: 28
Flex Disc replacement

I just did this twice on my 300ce (1988).

This is the easiest way to do it without the frustration.

(1) If you can acquire some 8-12" drive on ramps, drive front of car up. I prefer to use four (4) Jackstands

(2) Chock right rear wheel with suitable stopping device...remember the engine will be in neutral and the drive shaft will be disconnected

(3) Insert standard Jack on left rear of vehicle to jack the wheel high enough off of the ground to rotate the wheel and driveshaft assy. approx. 1/2"

(4) You will need another scissor to support the rear of the transmission when you remove the bracket/ this also doubles as the rear engine mount for the 1988 300ce

(5) After you are comfortable that the car will not roll off of your ramps and crush you *MAKE SURE THE VEHICLE IS SECURELY CHOCKED*

(6) Release the parking brake and place trans in neutral.

(7) After you start systematically reving the bolts you will be able to rotate the tire to access the next bolt

(8) Replace everthing in opposite order

(9) Post picture of your mangled flex disc for us to view

I hope this help as a suggestion for DIY, and do understand that you are undertaking this repair at your own risk and certifying your own safety requirements are adequate to avoid bodily injury.....

Good luck
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Old 11-24-2005, 12:56 PM
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Join Date: Aug 2003
Location: Phoenix
Posts: 3,726
You just did this twice on your 300CE? Mark Twain used to say quiting smoking is the easiest thing in the world, I've done it a thousand times.
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Old 11-24-2005, 01:03 PM
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Join Date: Jun 2005
Posts: 28
yep, witihin a week of each other, the first one let loose and i bought an oem replacement from the local MB dealer, it lasted about 35 miles and then handgrenaded, MB replaced the unit as defective and now I have about three hundered miles on the replacement.

I also replaced motor mounts, trans mount, center bearing mount and rear flex no vibes at all......even ran it up to 'bout 130 on the long bridge on the way to the office this morning....smooth as butter as a benz should be
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Old 12-31-2009, 02:51 PM
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Join Date: Aug 2008
Posts: 436
Not mentioned here-

You should loosen the driveshaft nut. Probably the earlier failures would be due to preloading the shaft axially.

Loosen the nut, remove the bolts and old joint, replace joint, tighten driveshaft nut.


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