I've got an 86 300e with the 103 engine.
I have to replace the water pump.
I can't figure out how to do it. DO i need to take off the visco clutch and all the accessories on the drivers side? I cant get to 1 of the bolts as it is burried behind the belt tensioner or water pump.

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1986 300e (runs like a top.. interior needs parts)
2006 GTO
2003 Mini S

http://mb.braingears.com/124_DISC1/Program/Engine/103/20-2100.pdf

which references -

http://mb.braingears.com/124_DISC1/Program/Engine/103/13-3450.pdf

Sixto
93 300SD
... just asking for trouble by posting links

hmm i can get to your links.. (thanks)
but when i try to use that site.. it says "404 not found"

__________________
1986 300e (runs like a top.. interior needs parts)
2006 GTO
2003 Mini S

Other one is too big to upload.

Sixto
93 300SD

Attached Files

20-2100.pdf (63.7 KB, 287 views)

Thanks.. i figured it out. I have to browse by folder. But since the files are named the same as the references, i can do it.
All set.

Thanks a bunch.

My manual says
"remove all coolant hoses. Unscrew 4 bolts holding pump to engine."

Is that the same manual i find available on dvd?

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1986 300e (runs like a top.. interior needs parts)
2006 GTO
2003 Mini S

This is a pretty big job, but a lot easier on the 300e where there's room to work than on the 190e.

Just finished replacing the water pump on my '86 300E. Took me about ten hours which also included replacement of the belt tensioner, all hoses, thermostat, and belt. I took my time and removed/cleaned many parts (radiator, fan, pulleys, etc.) while I had access.

Thanks to the tips in this forum I knew what I to expect and saved a ton of money.

I used a Sears Craftsman 13mm flex socket to get to the notorious water pump bolts. The most difficult part was not getting access but loosening the bolts which required an air wrench.

AH.. i haven't found much on the forum on water pump removal. But people love to title their threads for such things "what'll 8 hours and 3 cups of coffee get ya" instead of "103 water pump replacement w124" or something.
I have gotten estimates by people who have done it at 6-8 hours. Everything has been so easy thus far. This is making up for it. The water pump shouldnt be a longer job than a cam or head.
I guess i'll just pull it in the garage and work on it slowly over a few days.

__________________
1986 300e (runs like a top.. interior needs parts)
2006 GTO
2003 Mini S