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  #1  
Old 07-09-2002, 01:46 PM
KrautBoy
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removing alternator so i can take off the H2O Pump

Does anyone know how to take off the alternator or set it aside on a '93 300E 2.8 so I can get to the water pump? Yesterday we got as far as removing the fan shroud, fan and pulleys in the area. I saw a topic on here about changing the pump stating NOT to remove the power steering pump. They are so close together. Does the alternator also have some sort of lubrication system because I see a line going into it and I'm not sure if its oil or powersteering. I wanna get this puppy on the road ASAP so our 928 S4 stops racking up the mileage

Last edited by KrautBoy; 07-09-2002 at 08:30 PM.
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Old 07-09-2002, 08:29 PM
KrautBoy
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*bump*
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  #3  
Old 07-09-2002, 11:40 PM
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I believe your vehicle is equipped with a double-overhead cam engine - 24 valves - 4 per cyl. The engine is referred to as an M104. Mine is an M103 and while different, in regards to your situation, I believe they are similar enough for me to hopefully help.

Open the hood and stand in front of the vehicle.

The alternator should be on the LEFT side of the engine facing from the front. It's down below. Follow the serpentine belt.
You are likely loooking at the power steering pump which is on the RIGHT side looking at things from the front. Your alternator and H2O pump are on OPPOSITE sides. You do not need to remove/loosen the alternator.

Look in your owners manual. There's a layout for routing the serpentine belt. Within this diagram is a depection of where the various belt-driven components are. This should help your clarify where things are.

There's been alot said at this site about replacing H2O pumps on single-overhead cam - 12 valve - M103 engines. You may be able to use this to change out your H2O pump. Who knows. There may even be some info on changing an M104 H2O pump.

In my opinion, at least in the case of an M103 H2O pump, you need some special tools(Snap-On Flex tool-use search facility here to locate it's actual name) and a wide assortments of flexible extensions of various lengths and quality sockets. This is not an impossible task by any means, but it is work, especially the first time you do it.

Read everything you can find on the subject here, buy the proper MB repair manual for your car and take your time.

Last edited by Mike Richards; 07-09-2002 at 11:46 PM.
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  #4  
Old 07-10-2002, 01:54 AM
KrautBoy
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both the PS pump and alternator are on the driver's side of the vehicle. They are both held by some metal bracket but we can't tell if there is anything else holding it up.
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  #5  
Old 07-10-2002, 10:47 AM
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Are you sure you're not confusing the alt. with the A/C compressor?
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  #6  
Old 07-10-2002, 09:25 PM
KrautBoy
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positive, the AC compressor is located on the passenger side of the engine compartment. I take it this is the way to identify the M104 motor? After looking at the Mercedes shop book it just says that its only held by that bracket holding the PS pump too. Hopefully thats all...
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  #7  
Old 07-10-2002, 10:25 PM
engatwork's Avatar
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hmmm - I don't know. My 1995 104 engine has the alt and air pump on the pass side and the power steering pump and a/c compressor on the drivers side (along with the water pump).
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Old 07-10-2002, 11:56 PM
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Old 07-11-2002, 10:49 AM
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KrautBoy, somebody must have modified your car.
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Old 07-11-2002, 10:51 AM
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Or you live in the UK ???
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  #11  
Old 07-25-2002, 12:43 AM
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Didn't he say this was a 2.8??? I have had a 3.0 12 valve car and a 3.0 24 valve car. They are as you stated but I think that the 2.8 had a 190 drivetrain and the 2.8 was a different setup.



moose <--- doing dennis miller disclaimer at end of rant
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  #12  
Old 07-26-2002, 09:14 PM
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93 2.8 same as 3.2 alternator on passenger side us car ,

my thread on h20 pump done 2 weeks ago

300E water pump replacement
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