<V8> Wipers (again)

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <199802040946.BAA29064@mailgate22> Tim Gortner writes:

> I will recap the problem:  The wipers on my '90 V8 work fine, except
> they come to rest after use at a 90 degree angle instead of in the down
> position.  If the wiper arms had just loosened and slipped, they
> wouldn't work properly when using in the rain.  What is the mechanics
> here?  A computer?  The stalk switch?  Is it in the motor?  Is the motor
> expensive?  Has anyone experienced this before?

Nothing special about the V8, or about most Audis.  The self-parking mechanism 
is a copper track surrounding the motor spindle.  This copper track (and a 
contact wiper attached to the spindle) make a circuit that powers the motor in 
every position apart from "parked".  It's only necessary to feed the motor 
itself a short pulse - once the spindle has moved a fraction of a turn it 
closes the internal switch and powers itself around the rest of the cycle.

Most likely, this contact wiper has slipped 90 degrees.  Whatever - the problem 
is inside the motor housing.  More specifically, it's inside the gearbox 
mounted on the end of the motor.

-- 
 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club