Re: MB CIS system - more questions

[KSMITH1@mailgw.sanders.lockheed.com]

Phil said, in part:

>OK, guys - pay attention:
 
>a) WOT switch - Bosch 0 280 120 308, Audi 034 133 093F
 
>   Is it normal to see hysteresis?  It makes, and then you can back 
>off 10 to 15 degrees before it breaks.  Also, is this the part that 
>people have been cheerfully dismantling and fixing?

I can't speak to this switch in particular, but microswitches are 
designed with mechanical hysteresis in order to make positive contact. 
The switch from my 1988 90q is of this type.  

By the way, it doesn't dismantle well.  Mine comprises 3 parts.  The 
rear third, black, with cable, is potted with epoxy.  The middle part, 
black, contains the switch contacts and spring parts.  The front part, 
gray, mounts the lever and plunger, and is attached to the back part 
by internal (potted) machine screws. 

If anyone cares, I can report where to drill, very carefully, to put 
contact cleaner onto the contacts.  (I wrecked mine finding out.)

***                 ...Kirby    (Kirby A. Smith)                 ***
***                      2 X 1988 90q                            ***
***              ksmith1@mailgw.sanders.lockheed.com             ***
***              [=]   kirby.a.smith@lmco.com                    ***
***  Opinions expressed herein are entirely those of the author. ***