Author Topic: reconnecting control cables to heater levers  (Read 4724 times)

chicagopagoda

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reconnecting control cables to heater levers
« on: August 16, 2009, 16:49:34 »
I was able to replace my cracked levers but am having a heck of a time re-installing the cables. Following the advice from the tech manual, I lubricated the bale housings and they slide well now. The problem I am experiencing is that when I slide the cable into the lever pins and tighten down the slotted bolt one of two things happen...sometimes both: the end of the cable bends into a "C" or "U" shape and/or the cable pops out of the lever pin hole. I get the feeling I'm doing something wrong but dont know what. By the way, the upper (blue and smoke) levers didnt seem to have this issue as much, but both lower (red) ones are both problematic.

66andBlue

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Re: reconnecting control cables to heater levers
« Reply #1 on: August 16, 2009, 17:02:40 »
The wire needs to be placed between two special conical washers to prevent slipping and/or bending.
Don't place the wire against the nut.
They also must be oriented in the correct way to work. Perhaps the picture will help.
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

bpossel

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Re: reconnecting control cables to heater levers
« Reply #2 on: August 16, 2009, 22:17:43 »
Fred,

Look at Alfreds pictures.  The cables must be straight (including the ends) for them to work properly.  When I first bought my car, a couple of the cables had a "kink" and one had been bent into a "u" shape and fit around the lock nut.  Periodically, these cables would come loose and never really worked correctly.

The cables must be straight and one end will slide into the hole on the pin and is held in place with the lock washer and nut (as seen in Alfreds pic).

You may need some new cables?

Good Luck!
Bob  :)

chicagopagoda

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Re: reconnecting control cables to heater levers
« Reply #3 on: August 17, 2009, 18:35:05 »
Thanks guys. This is exactly what was missing from the equation. These washers werent on the unit when I took the cables off.

Dave Gallon

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Re: reconnecting control cables to heater levers
« Reply #4 on: August 20, 2009, 09:03:49 »
The conical washer is 108 990 00 41, MB USA list $3.90, my price $2.83. I believe the flat washer is a standard DIN 4mm washer. It sounds like you need new control cables, also. They are 113 833 02 31, MB USA list $6.25, my price $4.55. It is also a good idea to lubricate the new cables as they are inserted into their spiral sheath.
Dave Gallon
Gallon Restorations
113.044-12-001155

ja17

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Re: reconnecting control cables to heater levers
« Reply #5 on: August 25, 2009, 00:29:59 »
Hello Fred,

Are you aware that some of the lower cables are secured by tightening the hidden phillips screws through the speaker opening?
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
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