1987 300D - Need vacuum pump old vs new verification - Pictures
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Attached is a photo of the vacuum pump case on my newly acquired 1987 300D showing that the cover is secured by bolts. Does this mean that the pump is of the new style and I don't need to worry about it grenading my engine?
Thanks! |
That looks like the upgraded one to me.
But I would wait for verification by others. |
Thanks Brian, I'm hoping I can take that off my urgent list. I'll probably still replace it in the somewhat near future for good measure when I have to get down into that area.
Also, is Pierburg the OEM supplier? PS: Sorry about the crappy too-close picture, it's tight in there. |
Bump.
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Impossible to tell without removing it, or cleaning it and reporting the date code on the cover.
It is not original, it has been changed. |
Well, it not being original is a good first sign, I suppose. How long/hard of a job is it to get it out to for inspection? Bad enough that I probably want to just order a new unit and put it in?
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Fairly easy. Pull fan, and shroud, pull belt, and then slowly back the bolts out 2 turns and tap on the pump to free it from the block. If it's pushing HARD against the bolts, rotate the motor slowly by hand until tension is reduced, then remove all the bolts, pull the pump, and visually look at the follower to see if it's got open or closed bearings.
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x2 what vstech said - remove the pump to be sure. Have the right gasket ready for your engine -
http://www.w124performance.com/image...mp_gaskets.jpg Set the engine to TDC to release drive cam pressure on the vacuum pump for R&R. If you don't have a 2-piece shroud, get one (set) so removing the fan is less dreadful. All the OE and dealer replacement pumps I've seen have Pierburg markings. Aftermarket Pierburg pumps have the MB star logo ground off. Sixto MB-less |
I have a '92 300D 2.5 Turbo with the dreaded original vacuum pump (it has no screws on the faceplate). Which is the better replacement pump: Pierburg or Febi?
Thanks Herb |
Pierburg.
But you shouldn't need to remove the pump to check the date code. I was able to do it by taking a photo with a small camera, with the pump in place. AFAIK, the only gasket readily available is the supercede part, 601-238-08-80 |
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Sixto MB-less |
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Sixto MB-less |
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