How can there be no room to get vice grips or a socket type extractor on the water pump pulley bolts with the radiator in place? Doesn't the 190D 2.2 have clearance of at least the thickness of the fan and clutch between the water pump pulley and the radiator? This looks like plenty of room, far more than in a 124.133 -



... though the water pump pulley bolts look recessed which presents another problem.

Does the 190D 2.2 have an electric fan clutch like the 190E 2.3?

Sixto
87 300D

Yes it should have the electro magnetic fan clutch.

Then you'll never have to deal with an M103 water pump

Sixto
87 300D

I changed out the tensioner on the OM603 ( 87 300D ) and the tensioner can come out without removing the WP pulley. It is better than the OM601. However, the radiator and shroud is in the way and it makes life difficult.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

I've done this job a few times on my 2.5 turbo. There was no need to remove the radiator...just the shroud. It's a bit easier on the 2.5, because it has a viscous fan clutch. But it shouldn't be too much harder for you.

Do you have the large allen socket to remove the rocker? You're going to need to apply a good deal of force, because it's in there with thread locker.

Well in fairness, the OP mentioned in his post just prior to yours an 87 300D so that's a 124 chassis, as it appears yours might also be. His has a 6 cylinder 603 and yours a 5 cylinder 602, they both use the same viscous clutch & fan setup, but in his situation there is the extra cylinder!

A 124 with a 603 has precious little room between the fan and the radiator, just barely enough for the Allen Head bolt on the fan clutch to back all its way out. I just measured my 87 still with the original aluminum fan and there is exactly 1 1/4" between the fan and the radiator.

I suspect with a 602 and the difference of that missing cylinder split fore and aft of the engine mounts yours probably has almost another 2" of room.

Later 124's came with the two piece shroud which makes things easier also.

I have not worked on a OM602 so I cannot comment.

1) I have removed the viscous fan on 300SDL, OM603 engine, with radiator in place. It was royal pain in the a$$ as there is little room to insert the allen key.

2) I have NOT removed the viscus fan on a W124, OM603 engine, with radiator in place. There seems to be even less room than the W126. I do not even want to go there. Has anyone done it successfully?

3) OM601 has ton of room as it is 2 cyl short.

What I am saying is that the design of the tensioner, shroud, limited space makes R&R the front of the engine components very difficult. Remove the radiator makes access better but it is messy with coolant and ATF connections. All in all, I do not think it was well thought out.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

That's why they have developed a special tool! The stubby 8 mm Allen, Stahlwille makes one probably HAZET does also. If someone is trying to get it done with any old tool of course they will experience difficulties, as far as the design any engineer understands that every design is compromise, in this case the chassis exists as a parameter and the OM603 does as well so the compromise is getting just enough space to get things accomplished and the modified tool allows that.

I知 going to buy a w201 with a 601 engine soon. I知 going to drive it home long distance and I want to be ready for belt issues.

Is there a photo of the 201/601 front end/pulleys so I can better visualize the issue?

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

I see two photos in this thread...

what photo are you looking for?

__________________
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!

There’s a grainy (ruined because of the photobucket issue) picture of the front of a nondescript car with no radiator or structure… and I can see the tensioner Allen so I’m not grasping the issue there.

And then a photo of the top of an engine that isnt helpful.

Obviously I have a collection of 602/603 engines in my fleet. And I have plenty of experience replacing pullleys/belts/tensioners on them. So I’m trying to see better what to expect on a 601.

I’m buying a 1985 190D and driving it a long distance. So understanding the potential issue in case for whatever reason I encounter a belt failure, is my desire.

A simple better photo of the interference and overall issue.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)