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Old 05-03-2003, 11:11 AM
Kyle Blackmore's Avatar
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Join Date: Sep 2001
Location: almost beyond Hope...B.C.
Posts: 897
Do you have the M103 engine in that car?
1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
2007 R350 4matic- The Black Pearl
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1974 25' Trojan Sea Raider- 'Grannyknot'
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Old 05-03-2003, 11:59 AM
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Unhappy 190e Water Pump Replacement

I am looking for instructions on how to remove and replace the water pump in a MB 190E, 1989, six cylinder. Does the intake manifold have to be removed? If so, please include how to remove that. Does the power steering pump need to be removed? If so, please include how to rmove that. Water pump is packed tightly into the engine and has some tricky bolts to get to. Any advise is helpful.
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Old 05-03-2003, 05:54 PM
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Join Date: Dec 2001
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Much has been said on this subject:
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Old 05-03-2003, 05:55 PM
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I have done this on the same engine but in the larger 124 chassis. I have seen this engine in the 201 chassis such as yours and it is really shoehorned in there. In spite of that fact I'm sure you can do it.

There is a special tool that eases the job, without that you will need to remove the belt tensioner which will remove most bolts from the p/s pump. Once you have the p/s pump and tensioner out of the way you will be able to reach all the water pump bolts with extensions and u-joints. The fan must come off before the belt tensioner. Only loosen and remove the outer bolts that hold the fan to the clutch.

When replacing the pump also replace the hose above it that is about 1 1/2" dia by 2 inches or so. Also replace the o-ring on the heater connection and of course the o-ring between water pump and block. Put the block to water pump sealing o-ring in place in the water pump with grease so that it will stay in place while positioning the water pump.

This would be a good time to replace the belt and flush the cooling system.

Good luck,
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