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Does anyone have experience with using the MB WIS? If you get a 3 day membership, can you just download all the info for a single vehicle, or do you have to log in to access it each time?
Does anyone have experience with using the MB WIS? If you get a 3 day membership, can you just download all the info for a single vehicle, or do you have to log in to access it each time?
I bought a OM642 with a leaking rear main seal. It turned out to be much worse than originally thought it was. The vehicle runs, but it's got very heavy oil in it. I don't know if the heavy oil was put in to slow the leak down, or to hide main bearing issues.
I was hoping to get into WIS to look at what would be involved with checking and/or replacing the main bearings. From looking at it, It looks like it would be possible to drop the front sub-frame to get at the bottom end. It also looks like it would be possible to pull the engine out the top. I was hoping WIS would have detailed work procedures for this.
The first thing you must do is update your profile to include the year, model, is it gas, CDI or Blue and where you live, which tells us you have right or left hand drive.
Last edited by Maj. Dundee; Dec 12, 2020 at 11:05 AM.
You don't remove the engine, you remove the transmission to replace the eng. rear main seal. Then when the trans. is removed, replace the trans. front seal. This is not an easy task and special tools needed and on a lift.
Thanks, those docs look great! My comments about removing the engine were regarding main bearing inspection/replacement. I don't suppose you have any thoughts/info on that?
The bearings that hold the crankshaft in place. I'm concerned about their condition, so I'd like to inspect/measure them and if necessary, replace them.
these bearings are at least partially held in place by big bolts that run horizontal from the bearing cap through holes in the side of the engine block, with the hex head visible and accessible externally. These are one time use only bolts with specific tightening procedures.
The bearings that hold the crankshaft in place. I'm concerned about their condition, so I'd like to inspect/measure them and if necessary, replace them.
The bearings that hold the crankshaft in place. I'm concerned about their condition, so I'd like to inspect/measure them and if necessary, replace them.
@Black_smoke Have you ever done this before, measured bearings on an engine that wasn't being fully rebuilt on a stand, outside the vehicle? You are asking about several things in this thread.
Major oil leaks on the OM642 can come from several places, the oil cooler and the rear main seal. Possibly other sources. Have you ruled out the oil cooler as the leak source? It leaks down the rear of the engine. You need to spend a good chunk of time under the vehicle with a high power flashlight to see what's going on.
You don't remove the engine, you remove the transmission to replace the eng. rear main seal. Then when the trans. is removed, replace the trans. front seal. This is not an easy task and special tools needed and on a lift.
Maj Dundee - would you have the WSI pages for the oil cooler seals job?
I have the 2008 Jeep Grand Cherokee with the OM642.
Maj Dundee - would you have the WSI pages for the oil cooler seals job?
I have the 2008 Jeep Grand Cherokee with the OM642.
That would be amazing.
1: You should really consider starting your own thread or doing some reading on the many other oil cooler threads on this forum.
2: Major Dundee has left the building.
'You can get a bootleg copy of the WIS on ebay for about $20. It's a big file...
Edited to add: Is there not a Jeep page for these engines? Just curious.
Last edited by rapidoxidation; Jun 3, 2025 at 03:26 PM.
1: You should really consider starting your own thread or doing some reading on the many other oil cooler threads on this forum.
2: Major Dundee has left the building.
'You can get a bootleg copy of the WIS on ebay for about $20. It's a big file...
Edited to add: Is there not a Jeep page for these engines? Just curious.
Thanks for pointing me in the right direction. Found some threads that have the WSI pages for the work I was looking for.
As for the Jeep pages, not with the Mercedes specific work steps. Me being German, I like to go right to the source of who built this great engine.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
