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Old 12-24-2001, 02:04 PM
Registered User
Join Date: May 2000
Location: Greenville, NC
Posts: 533
W126 steering wheel removal (10mm nut stuck)

Help! I am about to break my 10mm allen head socket and my torque wrench! The 10mm self locking nut is stuck. Used WD40 and I have tried turning both ways and it will not move. I am replacing my steering wheel on my 1983 300SD.

1993 Mercedes Benz 300D 2.5 205K (ex wife's)
1984 Mercedes Benz 300SD 320K (SOLD)
2004 Mercedes Benz C240 75K
1995 GMC Sierra 2WD 5.7L 188K
1983 Mercedes Benz 300SD 239K (SOLD)
1987 BMW 325i 220K (SOLD FOR SALVAGE)

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Old 12-24-2001, 03:21 PM
MikeTangas's Avatar
Senior Member
Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
First, don't use your torque wrench to loosen bolts.

Yes, the steering wheel bolt is tight. When I swapped the steering wheel on the 560, it took two of us. Use a quality ratchet or breaker bar and a cheater pipe, one person holds the wheel while the other turns the wrench counterclockwise to loosen.

You need the other person holding the wheel because you don't want to put the amount of strain needed, to loosen the bolt, on the wheel lock.

Hope this helps.
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

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Old 12-24-2001, 06:54 PM
dpetryk's Avatar
Electrons can do anything
Join Date: Sep 2001
Location: Houston, Texas
Posts: 1,071
I had the same problem. I had to use a torch to heat the bolt to get it free. It was delicate since I didnt want to melt anything in the steering wheel. I tried everything else and I was afraid that the allen would strip out. I dont undrstand why they have to be so tight. After all the spline keeps things from slipping.
I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
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Old 12-24-2001, 07:50 PM
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Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
I usually resort to the impact gun to remove them in the shop. Maybe you can get it to a shop and have them try it for you with an impact.
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Old 12-24-2001, 07:52 PM
Posts: n/a
i feel your pain!
i changed my motor mount a few days ago and that 8mm bolt was stuuuuck! try this: hit it with some liquid wrench, then strike it with a pin punch and a hammer. then come back later and hit it again with liquid wrench (lots). finally use a legitimate breaker bar and socket and slowly apply pressure until it budges dont apply sudden pressure as if the bit slips it will ruin the bolt.
try some comet abrasive powder on the bit head to grip. if all else fails try a SMALL torch and dont make the bolt too hot as it will ruin the heat treatment on the bolt. (after you clean up all the liquid wrench).
good luck
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