I have been having intermittent fan operation: slap the dashboard or under the glovebox and it goes - for a while. The donor car (Sth Africa) had a Smiths motor(!), about 20mm longer, same dia, so won't fit without a day of cutting and brazing to make it fit. Last resort. There is no part number stamped on the side.
Is it worth my while to put in a 12v brushless motor of similar or smaller dia and/or length . There are only 2 wires in - power and earth. Would it stuff up the resistors that govern fan speed?
Cheers
Graham
Heater fan motor
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Monaro Charlie
- E Class
- Posts: 70
- Joined: Fri 30 Aug, 2013 6:28 pm
- Model you own: w123
- Location: Canberra
Heater fan motor
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John Green
- Mercedes Demigod
- Posts: 7677
- Joined: Mon 20 Jun, 2005 3:49 am
- Model you own: w112
- Region: Australian Capital Territory
- Location: Canberra-center of the known universe
- Contact:
Re: Heater fan motor
I should have a used fan at work.
Kind regards, / Mit freundlichen Grüßen,
John Green, Member Institute Automotive Mechanical Engineers
http://mbspares.com.au - Supporting Australia's Mercedes-Benz Enthusiasts.
John Green, Member Institute Automotive Mechanical Engineers
http://mbspares.com.au - Supporting Australia's Mercedes-Benz Enthusiasts.
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Monaro Charlie
- E Class
- Posts: 70
- Joined: Fri 30 Aug, 2013 6:28 pm
- Model you own: w123
- Location: Canberra
Re: Heater fan motor
Cheers!
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tsharkey
- 300 SLR
- Posts: 1661
- Joined: Sat 25 Apr, 2009 9:32 am
- Model you own: w123
- Location: Melbourne, Vic
Re: Heater fan motor
You can pull the motor apart and replace the brushes.
See the metal tabs on the side, then can be punch upward so that the lid comes off. You can grease the bearing while you are at it. Then punch them down again. I got brushes of fleaB, had to solder them in and re-use the original springs.
New Brushes = another 40 years of service ......
See the metal tabs on the side, then can be punch upward so that the lid comes off. You can grease the bearing while you are at it. Then punch them down again. I got brushes of fleaB, had to solder them in and re-use the original springs.
New Brushes = another 40 years of service ......
W123 1981 300TD - Family Kid mover
W202 1998 C250D Factory OM605A Turbo - Partner's daily driver
W123 1982 300CD Retro fitted OM617A Turbo - Mine
W123 1984 300TD English 5 Speed Manual
W123 1982 300TD Factory OM617A Turbo (Hans) - Project
W123 1982 300D - OM617 NA (Hektor) - Son's
W123 1985 230TE - Brother's
W123 1985 300D - Sister in Law's
1962 S-Series Valiant (Tho Daimler & Chrysler divorced, still part of the extended family)
Past benzes
W114 1969 250CE - PO put in an M110 transplant and nearly sent me around the bend
W123 1981 300TD - "Matilda" - RIP hit front side & rear but left my brother + niece A-OK
Current Projects
Coupe restoration, Turbo Wagon freshen up
W202 1998 C250D Factory OM605A Turbo - Partner's daily driver
W123 1982 300CD Retro fitted OM617A Turbo - Mine
W123 1984 300TD English 5 Speed Manual
W123 1982 300TD Factory OM617A Turbo (Hans) - Project
W123 1982 300D - OM617 NA (Hektor) - Son's
W123 1985 230TE - Brother's
W123 1985 300D - Sister in Law's
1962 S-Series Valiant (Tho Daimler & Chrysler divorced, still part of the extended family)
Past benzes
W114 1969 250CE - PO put in an M110 transplant and nearly sent me around the bend
W123 1981 300TD - "Matilda" - RIP hit front side & rear but left my brother + niece A-OK
Current Projects
Coupe restoration, Turbo Wagon freshen up
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GrampiansMerc
- M-100
- Posts: 620
- Joined: Tue 06 Jan, 2009 9:48 am
- Model you own: w123
- Location: Western Victoria
Re: Heater fan motor
Same as Tim
Clean and check brushes and you should be all good - mine was.
Clean and check brushes and you should be all good - mine was.
1980 w123 300D Silver sedan
1980 w123 300TD "Anna" - sold
1979 300D - sold, gone to be restored
2006 Musso - Korean Mercedes, 5 cylinder diesel - Blown head gasket, buggered motor, grrrrrrr (I will stick with German Mercs)
I'm just a simple man trying to make my way in the universe
1980 w123 300TD "Anna" - sold
1979 300D - sold, gone to be restored
2006 Musso - Korean Mercedes, 5 cylinder diesel - Blown head gasket, buggered motor, grrrrrrr (I will stick with German Mercs)
I'm just a simple man trying to make my way in the universe