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spots350sl
Veteran
Date registered: Mar 2007
Location: Chicago, Illinois
Vehicle(s): 2003 G500, 1972 350SL
Posts: 222
| Wiper Motor Diagram/Replacement
Hello all!
Recently I noticed a clunking sound when the wipers are used. Upon investigation, I discovered that the wiper motor was loose and it appears that one of the three bolts has fallen out.
From looking at the part online, it appears that the motor is bolted from the inside. I've read that others have replaced the motor without removing the dash, but can't find how it was done.
How do I go about tightening/replacing the bolt? Can I access it by removing the command unit?
Thanks in advance!
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| RE: Wiper Motor Diagram/Replacement
dash has to come out
http://rubicon-trail.com/public/disassemble/ |
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spots350sl
Veteran
Date registered: Mar 2007
Location: Chicago, Illinois
Vehicle(s): 2003 G500, 1972 350SL
Posts: 222
| RE: Wiper Motor Diagram/Replacement
I knew that was the only solution for the linkage, was hoping there was an easier way to fix/replace the wiper motor.
Oh well...
Thanks |
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Sassen
Regular
Date registered: Jan 2009
Location: Omaha, NE
Vehicle(s): 18 4×4², 18 Sprinter 4x4, 16 MB Serenity, 04 G500
Posts: 55
| RE: Wiper Motor Diagram/Replacement
Please note that the motor is actually mounted from the engine bay, I recently had the same problem, my three screws that hold the wiper motor to a plate were loose, there are 3 bolts that hold the wiper motor to the "frame", once these are removed, it is a tight fit, use a mirror and you can get a number 10 to tighten the bolts. Oh was I soo happy I didn't have to remove the dash. The motor is hidden behind the hood sensor and hydraulics for the diff lockers. And small hands would work best here lol |
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Amnaggar
Veteran
Date registered: May 2013
Location: Dubai
Vehicle(s): '10 G55, '10 C250, '05 Volvo S40 T5, '05 Pajero
Posts: 100
| Re: Wiper Motor Diagram/Replacement
Related question: what would make a wiper go prrrrrrr on its way back?! Only that it's dry? We don't exactly get lots of rain in Dubai to keep the rubber soft... |
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roughneck
Expert
Date registered: Apr 2006
Location: UK, Germany & USA
Vehicle(s): 270 cdi.300 GD 300 GE.lwb 300 GE.swb. Disco 2
Posts: 4398
| Re: Wiper Motor Diagram/Replacement
Replacement.
http://seekpart24.com/bosch/wiper-motor-390246137?c=100134&at=8555 |
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Sassen
Regular
Date registered: Jan 2009
Location: Omaha, NE
Vehicle(s): 18 4×4², 18 Sprinter 4x4, 16 MB Serenity, 04 G500
Posts: 55
| Re: Wiper Motor Diagram/Replacement
with the blades lifted off the windscreen, does it make the same noise? If not try changing out your blades to another brand? More plausible is that the are stiffened by your heat? I get the same problem in summer and then it rains. |
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Amnaggar
Veteran
Date registered: May 2013
Location: Dubai
Vehicle(s): '10 G55, '10 C250, '05 Volvo S40 T5, '05 Pajero
Posts: 100
| Re: Wiper Motor Diagram/Replacement
Sassen - 5/29/2013 1:01 AM
with the blades lifted off the windscreen, does it make the same noise? If not try changing out your blades to another brand? More plausible is that the are stiffened by your heat? I get the same problem in summer and then it rains.
Thx. Yeah, from experience here I'm guessing it's the heat! And yet another summer has just kicked in! Hell on earth over here! The yearly reminder to stop sinning  |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: Wiper Motor Diagram/Replacement
Ok so is this the clunking sound you were hearing?
https://www.dropbox.com/s/gyv6dacgvzgzs1e/20141130_153438.mp4?dl=0
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: Wiper Motor Diagram/Replacement
Ok can anyone comment on the wiper sound in the video link above? My thought is motor bolts but if I can check the linkage more easily I will. Thanks. |
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4x4Cal
Veteran
Date registered: May 2007
Location: Calgary, Canada
Vehicle(s): a Desert Silver & a Brilliant Silver G500
Posts: 260
| Re: Wiper Motor Diagram/Replacement
atg - 12/3/2014 11:13 AM
Ok can anyone comment on the wiper sound in the video link above? My thought is motor bolts but if I can check the linkage more easily I will. Thanks.
I think I heard the noise from the wiper blades. Do you have another set of wiper blades to test? lets try if you hear the same sounds when you lift the arms off the windshield then turn the wipers on. |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| RE: Wiper Motor Diagram/Replacement
OK I just changed the blades but they could be clunking around a bit. To me it sounds like it is in the firewall somewhere high up but one could not tell that from the video. Will try your suggestion and report back.
Thanks,
Karl |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: Wiper Motor Diagram/Replacement
Nope its not the blades. Play somewhere in the linkage or motor.
https://www.dropbox.com/s/d6ggmym2o1n870v/20141206_120414.mp4?dl=0
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: Wiper Motor Diagram/Replacement
I took the footwell apart and crawled under there then switched the wipers on. The sound was coming from the mounting flange of the driver's side wiper, which was moving back and forth with each wiper stroke. The mounting bolts had come loose for some reason. I was able to retorque them with a u-joint on a 14" extension on a 1/4" ratchet; the bolt heads are 10mm as someone conveniently mentioned above. I say conveniently because the bolt heads are almost impossible to reach being directly above the steering column and brackets for the dashboard, so even getting a socket up there is a challenge. Anyway, no more clunking sound. The wiper blades still make the usual noise when they change direction on the glass of course, but no clunk from the firewall and no more play in the wipers when I move them by hand. I don't know why they would come loose but maybe the car saw lots of washboards or something in another life. It only has 50k on it; everything looks brand new under there. |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| RE: Wiper Motor Diagram/Replacement
Photo of flange bolts on drivers wiper arm from footwell.
EDIT: Photo removed to be resized. |
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Gurukid
Member
Date registered: Jul 2013
Location: Sarasota, Florida
Vehicle(s): 2003 G500
Posts: 21
| Re: Wiper Motor Diagram/Replacement
Lovely, this is on my list of things to do in the next few days... Can't wait.... |
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512bbi
Expert
Date registered: Jan 2007
Location: North western US and Europe
Vehicle(s): 05G55kge,Range rover classic,clk55amg,ML 430
Posts: 1313
| RE: Wiper Motor Diagram/Replacement
atg - 12/9/2014 9:22 PM
Photo of flange bolts on drivers wiper arm from footwell.
EDIT: Photo removed to be resized.
I wish I could see that photo.
Mario |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: Wiper Motor Diagram/Replacement
I didnt remove it.
Try this link:
https://www.dropbox.com/s/z4kpftieiazi8qj/20141206_133124.jpg?dl=0
Edited by atg 12/13/2014 10:44 AM
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thebigblue
Date registered: Jan 2012
Location:
Vehicle(s):
| Re: Wiper Motor Diagram/Replacement
If a photo is wider than something around 900 to 1000 px, DUTCH will remove it at sight.
Edited by thebigblue 12/14/2014 5:02 AM
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Wiper Motor Diagram/Replacement
thebigblue - 12/14/2014 5:01 AM
If a photo is wider than something around 900 to 1000 px, DUTCH will remove it at sight.
And it's done with a simple request and fair warning. See here:
http://pointedthree.com/disc/forums/showthread.php?tid=18494&mid=19... |
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