Re: [MBZ] 1982 MB 300CDT

[Jim Cathey]

I have the inner panel off and electrically everything is fine to the 
motor.


That's harder to determine than you might think.  Hook a test light
to the two terminals and actuate the switch.  It should light up both
ways.  The terminals are both 'hot' normally, the switch selectively
grounds one of them.


Does anyone know if there is an internal limit switch in the motor.


No limit switches, the motors just stall at end of travel.

-- Jim

Re: [MBZ] 1982 MB 300CDT

[John Berryman]

On Apr 27, 2006, at 12:11 PM, Chuck Landenberger wrote:



Suggestions appreciated.

Best Regards
Dan


	The most common failure is a dirty switch, which is easily rectified  
by disassembly and cleaning. Putting 12v directly to the wires on the  
door will tell you if the motor is good reversing polarity reverses  
direction of rotation.


Johnny B.
I Mac Therefore I am

Re: [MBZ] 1982 MB 300CDT

[andrew strasfogel]

Chuck is correct, but you neglected to mention whether the window was
attempting to rise or was totally dead.  If it's bumping and then falling
back down, the regulator teeth or a toogh thereof, are/is broken. Otherwise,
it could be a bad motor or switch.

On 4/27/06, Chuck Landenberger [EMAIL PROTECTED] wrote:

 Dan,

 Motor is probably fine.  Would guess that you need a regulator.  They
 become deformed over time.

 In the mean time, you can probably nurse the window up a little at
 a time.  Push up, then press switch up, push up, press switch, etc

 HTH and take care,

 Chuck
 Phoenix AZ
 1980 300SD
 1986 190E 2.3 16V
 On Apr 27, 2006, at 4:33 AM, Dan Schriber wrote:

  Yesterday my wife came home in her 300CDT and the window on the
  driver's
  side would not go up.
 
  I have the inner panel off and electrically everything is fine to
  the motor.
  Does anyone know if there is an internal limit switch in the motor.
  The coil
  of the window motor reads continuity but will not go up.
 
  Unfortunately it is still cold here and chances of rain are
  probable in the
  next 6 months so I need to fix this, hopefully without buying a new
  motor.
 
  Suggestions appreciated.
 
  Best Regards
  Dan
 
 
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