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#1
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Central Locking Vacuum Pump: Repairable?
1989 260E
My vacuum door locks have stopped working because the vaccum pump under the back seat does not appear to be producing suction. When I turn the key in the lock, and put my ear very close to the pump, I can hear it hum -- although MUCH more faintly than its normal, louder hum, which I could hear from anywhere in the car. Sounds like whatever motor is in there is failing. Are these pumps fixable, or do I need to replace it?
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2008 E350 4matic / Black/Anthracite ------------------------------------ Gone but not Forgotten: 2001 E430 4matic, 206,xxx miles, Black/Charcoal 1995 E320, 252,xxx miles, Black/Grey 1989 260E, 223,00 miles, Black/Black |
#2
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Dear Eric Silver,
There is a site with a realy good explanation and pic's on the following web site. Good luck! Danny OJs W124 Tech Tips : Central Locking System http://ow.no/mb/w124/tech/electrical/centrallockingsystem.html |
#3
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Danny,
Thanks for the info; it's very good. I know, however, that the pump itself is at fault. I am wondering if it can be easily repaired, or does it need to just be replaced. (I hate to buy something new if a simple and cheap fix is available.)
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2008 E350 4matic / Black/Anthracite ------------------------------------ Gone but not Forgotten: 2001 E430 4matic, 206,xxx miles, Black/Charcoal 1995 E320, 252,xxx miles, Black/Grey 1989 260E, 223,00 miles, Black/Black |
#4
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Pump is not reparable.....l bought one on Ebay for $60, has been working well for the past yr or so, dealer wanted $800 for new.
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1993 500SEL |
#5
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Arif,
I did just that -- bought one on Ebay for $30, and got it today. Will install tonight. Hope it works -- and thanks for the scoop.
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2008 E350 4matic / Black/Anthracite ------------------------------------ Gone but not Forgotten: 2001 E430 4matic, 206,xxx miles, Black/Charcoal 1995 E320, 252,xxx miles, Black/Grey 1989 260E, 223,00 miles, Black/Black |
#6
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Well,
The pump is in and works fine. I suspect the old one burned out because I have a leak, it seems in the fuel filler door vacuum element, causing it to run, on unlock/pressurization, for too long. (Over a few years, those extra thirty seconds per unlock event probably add up.) I have no idea how to remove the element, and would probably be content with bypassing it.
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2008 E350 4matic / Black/Anthracite ------------------------------------ Gone but not Forgotten: 2001 E430 4matic, 206,xxx miles, Black/Charcoal 1995 E320, 252,xxx miles, Black/Grey 1989 260E, 223,00 miles, Black/Black |
#7
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Gas Tank flap
I think the diaphram is available, probably not a major repair. The entire assembly for a 560SL is less than $25, and the diaphrams for up to 84 were $7,or plug it untill you decide (Golf Tee)
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#8
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I Peter,
Thanks for the scoop. I will definitely do both of those -- plug the vacuum line for a a few days, and then install the replacement diaphragm after ordering it.
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2008 E350 4matic / Black/Anthracite ------------------------------------ Gone but not Forgotten: 2001 E430 4matic, 206,xxx miles, Black/Charcoal 1995 E320, 252,xxx miles, Black/Grey 1989 260E, 223,00 miles, Black/Black |
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