Author Topic: potentially stupid wiper arm adjustment question  (Read 5401 times)

Fdevita

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potentially stupid wiper arm adjustment question
« on: April 29, 2015, 22:16:16 »
Wiper were not working so I removed the wiper arm and checked the motor to see if it was turning.

Good news, it turns freely when activated and completely rotates 360 degrees.

Here is my potentially stupid question.

Is it supposed to turn 360 degrees?  If so, it seems like the linkage arm is too short to support 360 degrees.

What am I am missing here?

Thanks in advance

Benz Dr.

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Re: potentially stupid wiper arm adjustment question
« Reply #1 on: April 30, 2015, 03:49:55 »
The motor turns 360 degrees and a system of very clever linkages makes it all work.  :)I would look to see if one or both arms are freely moving before deciding what to do. The right side arm isn't too bad to get apart but the left one will try your swearing ability to the limit.  >:(You will pretty much need to remove everything behind the dash to get the left side out if it's siezed up.  :(
It doesn't happen that often but it does. If that's the case, it's a good time to go through the gauges and heater matrix since it has to come out anyway. ::)
« Last Edit: April 30, 2015, 23:42:22 by Benz Dr. »
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC

Fdevita

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Re: potentially stupid wiper arm adjustment question
« Reply #2 on: April 30, 2015, 18:02:49 »
Benz Dr.

Thank you, I can see that now. And yes I am fearful of having to take everything apart.  Again.

Rick007

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Re: potentially stupid wiper arm adjustment question
« Reply #3 on: May 28, 2015, 09:08:13 »
Did this job a few weeks ago ... tried everything but nothing worked .  Tried penetrating oil with pressure , soaking , the works .... there's only one way to go and strip the dash again .
Afterwards you will be happy and surprised how far your left wiper actually goes . Mine always stopped in the middle of view .. a bear of a job but doable as long as you take your time and stay relaxed .

 
RICK007
'67 MB 250SL

ja17

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Re: potentially stupid wiper arm adjustment question
« Reply #4 on: May 31, 2015, 23:04:51 »
Dis-connect the battery when your working up in there. If you accidentally have the ignition on and move the motor off rest, it will activate automatically. If your hands and fingers are in the wrong place, you can get seriously injured. Al Liefring, posted a procedure some years back on using special tools to inject lubricant and free-up those stuck pivots while in place.
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)
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450sl

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Re: potentially stupid wiper arm adjustment question
« Reply #5 on: June 01, 2015, 15:09:34 »
here are the internal motorswitches..  check these out

WRe

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Re: potentially stupid wiper arm adjustment question
« Reply #6 on: June 01, 2015, 16:33:51 »
Hi,
this is the link Joe Alexander mentioend: http://www.sl113.org/forums/index.php?topic=5929.0
...WRe

Fdevita

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Re: potentially stupid wiper arm adjustment question
« Reply #7 on: November 10, 2015, 15:32:55 »
Thanks everyone, control arms resolved, wipers now work!