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#1
10-30-2005, 10:25 PM
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where is the auxilliary water pump 87 300 TDT?
i can't find it. don't laugh or make fun of me :-)
is it under the air filter housing?
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________________ punkinfair 
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#3
10-31-2005, 06:03 AM
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Follow this for a visual . . .
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1NF0CS0JZ1NF0CWAMF&year=1987&make=MB&model=300-TDT-002&category=G&part=Auxiliary+Water+Pump
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Steve '87 300TD - 132K - Soon 4-Sale '84 300D Turbo - 122K - Driving '77 VW Type II - 77K - Restored '08 250EX Ninja English Bulldog (Brier) - My best friend. Passed away 12/02/04 while in my arms.
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#5
11-02-2005, 11:07 AM
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as far as i understand it, the auxilliary water pump is designed to circulate more coolant to the heater core at low rpm, idle for instance. i seem to have low heat output at idle, so i am trying to find out why.
thanks for the tips on location, i got it now.
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________________ punkinfair
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#6
11-02-2005, 02:17 PM
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Hey scott,
You can follow a coolant line (seemingly) coming out of the intake manifold in between cyls 5 & 6, which goes straight down into the aux coolant pump. Mine was malfunctioning as well. I tested it by just wiring it up to the battery and it didn't spin. I took the motor part apart (don't try to take the impeller off the shaft, I broke a vane off of mine  ). The motor was filled with gunk and the brushes were pretty corroded. I cleaned it all up, sanded the commutator, put it back together and it worked beautifully. There is hope!
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1987 300TDT (294,000 km)
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