Hmm my 220Sb has started to honk as a function of the steering wheel's position. I would really appreciate a proper solution to this, if anyone can help. I had a quite embarrassing journey today

There are 3 little screws, hmmm..

Karsten

Assuming the horn ring and switch are secure and check out OK, a common problem is a worn out upper shifter bushing, allowing the end of the shift shaft to press against the backside of the hornswitch. The bushing that wears out and causes this problem is on the backside of the cast bearing plate that holds the upper steering shaft bearng. If that's the case, you'll have to remove the bearing plate to replace the shift shaft bushing.

Happy Motoring, Mark

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DrDKW

Thanks Mark, I think this is the case since the shifter is moving as I press the horn switch....

Karsten

Mark, I'm not quite sure which bushing you are referring to, could you please point it out on this drawing http://detali.ru/cat/oem_mb2.asp?TP=1&F=111012&M=180%2E941&CT=F&cat=238&SID=26&SGR=001&SGN=01

Regards,
Karsten

I only saw two tranny diagrams, showing the transmission itself and some of the underhood linkage.

The bushings you need are in the upper steering column housing, located in a recess in the cast bearing plate that supports the steering shaft.
First remove the steering wheel and horn switch. Be carefull not to lose the little ball bearing that fits between the back of the horn ring and the horn switch.
Assuming there's anything left of the bushings, you should now see the uppe end of the shift shaft with a 'C' clip and one of the upper shift shaft bushings.
Under the cast plate that holds the steering shaft bearing, is the other half of the upper shift shaft bushing. This is the part of the bushing that wears out and allows the shift shaft to jam against the horn switch. You'll need to remove the snap rings securing the steering shaft bearing, then the 'C' clip on the shift shaft, then the screws holding the bearing plate in the steering column housing. The bearing plate can then be pulled/pried out to replace that half of the shift shaft bushing.

Happy Motoring, Mark

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DrDKW

I spend half an hour with MB today trying to locate these bushings, with no luck? Is it the two "Vulkollan rings" ? (#303 on the third drawing)

Karsten

My WebTV doesn't seem to load more than the first two pictures, then everything freezes up. Your file may be too big or maybe there's something wrong with the link. Without being able to see what is #303 on your picture it's hard to say, but your description of two 'vulkollan rings' sounds about right.

I have two Fintail glovebox parts books - 1960 220sb catalog B and 1963 220b catalog C. On page 55 of either catalog, they list both bushings as part # 71.

My Mercedes factory 'Service Manual...Passenger Cars starting August 1959', Chapter 26-15 'Removal and Installation of Shift Tube', calls them a 'Vulkollan ring'

Happy Motoring, Mark

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DrDKW

Thanks Mark,

It is item #71 in the catalog C, great now I can order the parts

Regards,
Karsten

Please be aware that the horns work by feeding "hot" current continuously to the horns,and the horns are activated by the earth lead which is connected by the horn ring.
If there is a "connection" between the horn and the horn ring ,the horns will sound ,this can be cuased by the horns rubbing against the cross member ( sometimes caused by hitting high curbs etc and knocking the horn back.)
the loom can also be rubbed through under the car on the crossmember if the securing clips have been allowed to come loose and let the loom move about.

Thanks for the info. This is however defenitely a function of steering wheel position and gear lever ditto. I also notised that reverse became harder to find up to this event.

Karsten

Are there any tricks to this part? The plate is stuck pretty good.... I have been trying with a small puller but I'm afraid to break the plate.

Karsten

Okay, got it. Unfortunately the plate did break but I had a spare.

Those little rings had turned into mush, now everything works and the gear shift is a lot more precise and no more fiddling to find the reverse

Thanks for your help Mark.

Karsten

I have the same problem as Karsten. Which parts do i need to have to fix this problem?

Thanks in advance!

Kind Regards,
Stijn

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