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  #16  
Old 04-16-2008, 04:23 PM
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I am guessing the belt might be a bit short. Thus the PS Pump and its pulley is rotated a bit down. So the belt sits a bit lower and rubs against the Vacum Pump housing. That and or the belt isn't tensioned right. If its tensioned loose then it might be flopping around a bit. Also check that the puley runs concenrtric. There seems to be some numbers on the belt. Post them. It should be a width by length or something. I think they are 13mm by whatever. I would try and get a Continental made belt. NAPA listed the belt as 12mm or 12.7 by 1153mm. I might have the wrong model. It listed TD or Turbo models for the 300.
Tom
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  #17  
Old 04-16-2008, 07:46 PM
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i do have correct belt...from pictures i've seen belt runs in front of vacuum pump not on it or over it...the pullies line up...doesn't appear to be original engine so who knows what it might be...is it possible for any vacuum pump but the right one to attach to engine? it is non turbo 300d euro think it's 1980 0r 81
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  #18  
Old 04-16-2008, 07:51 PM
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Quote:
Originally Posted by newpastlife View Post
i do have correct belt...from pictures i've seen belt runs in front of vacuum pump not on it or over it...the pullies line up... Correct. doesn't appear to be original engine How can you tell? so who knows what it might be...is it possible for any vacuum pump but the right one to attach to engine? it is non turbo 300d euro think it's 1980 0r 81
Perhaps an incorrect pulley shim?
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  #19  
Old 04-16-2008, 08:18 PM
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the pullies have shims?...looks like it needs half inch at least for belt to clear vacuum pump
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  #20  
Old 04-16-2008, 08:47 PM
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anyone know if the diaphragm style vacuum pump is shorter than the piston style?...according to my engine # the wrong vacuum pump is on...this possible?...would fit?...maybe reason for rubbing power steering belt?...thanks...engine # is 617912 12 008962 ...what is correct pump?...looks like the piston type on there now...thanks everyone!!
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  #21  
Old 04-16-2008, 10:20 PM
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Quote:
Originally Posted by newpastlife View Post
...thanks...engine # is 617912 12 008962 ...what is correct pump?...!
Run your vin on this site:

http://old.mbclub.ru/mb/vin/?lng=eng

You can see your original engine number on the results.
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  #22  
Old 04-16-2008, 10:51 PM
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yes already ran it and engine # is different than engine in car...my guess is that someone used vin to replace vacuum pump but didn't realize it was different engine than what vin states....could this older(diapghagm) and newer(piston) style vacuum pumps be interchanged?...would it bolt in and work right?...thinking if i get bigger pully for power steering pump the belt might ride around the vacuum pump
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  #23  
Old 04-16-2008, 11:41 PM
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If you find a source for a larger ps pulley let me know. I'd like one for my autocrosser.

Tom W
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..I also have a 427 Cobra replica with an aluminum chassis.
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  #24  
Old 04-17-2008, 12:12 AM
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Quote:
Originally Posted by newpastlife View Post
yes already ran it and engine # is different than engine in car...my guess is that someone used vin to replace vacuum pump but didn't realize it was different engine than what vin states....could this older(diapghagm) and newer(piston) style vacuum pumps be interchanged?...would it bolt in and work right?...thinking if i get bigger pully for power steering pump the belt might ride around the vacuum pump
Judging by the engine number given. I am guessing your engine is pre 1980. Which is why I think your A/C setup is for the older vehicles and uses a York compressor. The later A/C compressor is located on the bottom on the driver side. I think they used the late model power steering pump and main pulley. The earlier power steering pulley goove is forged further out towards the radiator to clear the early style vacuum pump.

Not sure if you a newer style vacuum pump would work with an earlier engine bock, but I don't see why not.
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  #25  
Old 04-17-2008, 07:01 AM
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the pullies have shims?...looks like it needs half inch at least for belt to clear vacuum pump
Grabbing at straws, something isn't right.
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  #26  
Old 04-17-2008, 10:28 AM
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I would look for another car just like yours and compare the two set ups.
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