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#1
12-17-2013, 09:41 PM
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Water pump housing leak.
This concerns my 1980 300sd. Yesterday I noticed lots of coolant on my garage floor as I was pulling out. I could not locate the leak while the car was running and it appears that the leak only occurs when the car has been shut off for about an hour. Tonight I found that the leak is coming from the bottom of the water pump housing. The pump itself seems to be completely dry. I have changed water pumps on these diesels before but never have messed with the housing. Anyone change one of these out before? Any suggestions on tackling this job?
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#2
12-18-2013, 06:13 AM
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not sure about that one.... water pump and wp housing is one and the same part that has to be changed.. if leaks whole pump goes out you will need gasket... .
__________________
w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD  2.88 diff,EGR blindednext wish/project: w114 coupe OM603 powered
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#3
12-18-2013, 08:18 AM
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The water pump has a weep hole on top. Carefully inspect that short hose on the t'stat housing.
I had the same issue, noticed water on the garage floor.
__________________
83 SD 84 CD
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#4
12-18-2013, 08:29 AM
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if indeed, it is the housing, find out where it's leaking from.
the housing does unbolt from the block, and any parts yard 240 or 300 housing will work.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
12-18-2013, 08:31 AM
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If you pull the pump, be sure to use anti-seize on the bolts when you reinstall.
__________________
83 SD 84 CD
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#6
12-18-2013, 09:08 AM
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Is this not what the OP speaks of sold here at Pelican parts.
Of course the OP may need just the gasket. This may not be the correct part numbers for you , so double check. These numbers are for turbo 617 engines. But maybe this will get you on the right track to looking for parts. Housing Part number 617-201-05-01 Housing to block Gasket Part number 616-203-01-80 Water pump gasket part number 616-201-00-80 
Last edited by Rockyriver; 12-18-2013 at 10:14 AM.
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#7
12-18-2013, 10:35 AM
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Water Pumps sometimes have 2 weep holes but almost always they have at least one on the Bottom of the Pump.
If some sort of Hole is eaten through the the Housing behind the Water Pump it may be possible to repair it with JB Weld or those low temp Alumiloy Alminum Rapair Rods. For both repairs any corrosion needs to be removed down to the bare metal. Over on another forum someone broke the studs/bolts that go through the Water Pump and the Water Pump Housing.
__________________
84 300D, 82 Volvo 244Gl Diesel
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#8
12-18-2013, 11:42 AM
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I broke one of the screws when installing a new water pump on one of these cars.
That was the last straw, should not have bought that car. It went to the crusher.
__________________
83 SD 84 CD
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#9
12-18-2013, 11:58 AM
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You have to expect setbacks. If you lived in a really serious corrosion area like I do especially . It is the unusual when everything goes easy.
Of course you learn how to get stuck things separated etc with the least agony. I would not work on a local car without a lot of helpful things..
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