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#1
09-02-2007, 05:22 PM
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water pump blocking plate
After spending the better part of the weekend pulling the water pump of of the 95 E320 and putting the new one on I discovered that the replacement has an extra port in the back. I bought a Graf pump for which I gave the parts guy my engine number so I don't understand how it happened... and how I didn't notice the port. I did notice the extra o-ring in the box but thought nothing of it.
The port in the backhas a recess for an o-ring and two bolt holes tapped. I wonder if anyone makes a blocking plate for this situation. I would much rather put on a blocking plate than mount this one and wait for the parts supplier to get one without the extra port. Has anyone else run in to this problem? I'd be interested in the remedy. Thanks!
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Tim Benner 00 ML320 170K 95 E320 wgn 160K 
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#2
09-02-2007, 06:31 PM
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If it is just a flat thing you might be able to make one from some 1/8" or 3/16" aluminum plate.
Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#3
09-02-2007, 08:42 PM
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The port is for a flange..
For a water line to the oil cooler.... if you have one. A careless mistake on my part for not noticing the port before installation. I'll use some 3/16 aluminum or steel bar stock to try and make one.
Does anyone happen to know what size screws mount the flange? I can pick those up tomorrow and just maybe be able finish it off. Anyone getting ready to do a waterpump job; be sure and count the ports before you start!!
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Tim Benner 00 ML320 170K 95 E320 wgn 160K
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#4
09-02-2007, 09:07 PM
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be aware that steel bolts screwing into aluminum will need about three times the length to develope the holding power of the bolt, in thread,compared to steel, so be sure to put in bolts that use all of the threads available in the aluminum casting. Then use some anti seize so they will come out in ten years when you go to change the water pump again.
Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#5
09-02-2007, 09:07 PM
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Are you talking about this plate in the picture?
http://img.eautopartscatalog.com/live/G300060733LAS.JPG
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2007 C 230 Sport.
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#6
09-03-2007, 07:44 AM
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That's the plate!
That would be what I am missing. Whoever manufactures the pump in the pic is kind enough to include the plate. Do I try and find one or make one? I'm still trying to figure out the bolt size if anyone knows.
Regards,
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Tim Benner 00 ML320 170K 95 E320 wgn 160K
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#7
09-03-2007, 11:21 AM
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I'd go see the dealer with that photo. They should easily be able to pull up the diagram, order the part and take your money. Cant be all that expensive and it will be correct and seal properly.
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Christopher Henkel 1990 190E 2.6 - Arctic white SOLD 1986 190E-16v - Blauswartze 1993 300CE - SOLD 2003 W208 CLK 320 Cabriolet - Magma Red
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