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#1
06-17-2011, 08:06 PM
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orthopedic seats in '88 300E vacuum pump issue
I just picked up a '88 300E about a week ago and it had these funky controls that on the inside of the seat in between the center console and the seat on both the passenger and drivers side. The vacuum supply pump is dead on the car which is what led to my investigation of the problem. It has an outlet on the pump with the usual tee and two yellow vacuum lines coming off of it but it also had another outlet with 3 grey vacuum lines coming off of it. I have to assume those 3 lines are for the orthopedic bladder features in the seat? Correct me if I am wrong. Now my issue is locating one of these pumps so that I can have central locking again and to check out the orthopedic seats. If you can correct me or provide any additional information or even confirm what I have found is correct then it would be greatly appreciated, thanks.
Connor 
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#2
06-17-2011, 10:22 PM
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The pumps interchange between W124 and W126 cars, but as you noted, the ortho pump has an additional connection(s).
Need a pump with the ortho connections. Jim
__________________
14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles
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#3
06-19-2011, 02:14 PM
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Can you take a picture? My W126's pump just has two outlets; one for Central locking and one for the seats that T's off up front.
Is your pump NLA at the dealer? That may be your only option...
__________________
_______________________________________________ 1987 560SEL (210,000 miles)
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#4
06-19-2011, 03:47 PM
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Have you checked the power to the pump?
I recently repaired a pump by taking it apart and lubricating every moving part(the actual pump with graphite). It didn't turn at all and after the repair worked as before, cheap fix. Rob
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#5
06-20-2011, 02:04 PM
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Is that it?? My pump looks nothing like it, but that may be your only shot at a good used one!
__________________
_______________________________________________ 1987 560SEL (210,000 miles)
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#6
06-20-2011, 08:45 PM
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Quote:
Solid Snake, That is a pump used on the later model w124's, the pump I have that is original with the car has one spigot for a tee that connects two yellow lines to the pump for the central door lock system and the other spigot has a 3 into 1 collector that connects three grey vacuum lines into the pump. The gray ones are for the ortho seats. I was gonna take a picture but have been crazy busy at work.
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