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Old 10-13-2002, 09:51 PM
M D Nugent
Posts: n/a
Question 560SEL trans question

I want to drive a mechanical speedo ('72 350SL) from a 560SEL trans.

Someone told me I can replace the tail section of the 560SEL trans (and its Hall effect sender) with the tail section from a 123 chassis (it has a mechanical speedo drive), and then use the 123's speedo cable.

Can anybody here either validate or criticize that suggestion?

M D "Doc" Nugent

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Old 10-14-2002, 08:11 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The cars that had a mechanical speed have a lubrication "bore" to feed trans fluid to the speedo drive area. Transmissions that were designed for electronic speedos didn't have this lube bore & can cause problems. Not a good idea.
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Old 10-14-2002, 09:14 AM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
We have repaired speedos for years.

We periodically get junk mail describing various speedo related functions. Recently we got a flier for a device that converts electrical speedo signals to drive a small motor that spins a short speedo cable at the proper speed.

My brother does the speedos and I gave him the flier. When he gets here I'll see if he saved it. Otherwise you might try a speed equiptment vender for such a product.

Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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