Ultimate OM642 build (2009 R320L CDI, 7G-Tronic)

[Ge2tis]

More photos...

 

[Ge2tis]

More photos...

 

[Ge2tis]

Those are he last from today..quality not great as lightning was very poor...will try to make better ones tomorrow..

 

[M80]

I hope you don't have a copyright on those many, many photo's as I've copied them into a folder.
I expect they will be very useful in the future should I need to strip down the Viano engine, thanks.

 

[Ge2tis]

I hope you don't have a copyright on those many, many photo's as I've copied them into a folder.
I expect they will be very useful in the future should I need to strip down the Viano engine, thanks.

Please, be my guest..

 

[LostKiwi]

That lòoks like classic oil starvation to that crank journal. You can see where the bearing has picked up on the journal.
That crank need a checking by a reconditioning place to check for journal wear and possible regrind. If you have compressed air blow through the gallery from the main to the big end to check it's clear.

 

[ajlsl600]

The new ones are purple in colour

There is a Diesel V8 in the ML420CDi

i think there is a diesel v8 in one of the later g wagon as well.

 

[JBell]

i think there is a diesel v8 in one of the later g wagon as well.

It was put in the GL, don't think the G had it

 

[Ge2tis]

That lòoks like classic oil starvation to that crank journal. You can see where the bearing has picked up on the journal.
That crank need a checking by a reconditioning place to check for journal wear and possible regrind. If you have compressed air blow through the gallery from the main to the big end to check it's clear.

That was my thought as well...the bearings and the journals are like sanding paper...will definitely gonna have it checked..

 

[M80]

Aye, the cause will be interesting.
Was it run on low oil in its previous life?
Is the oil pressure switch working correctly? it may have been replaced anyway.

Have you found the bearing fragments in the old oil?
What else may have been affected? Low oil could affect rings and small ends.

 

[ajlsl600]

i think there is a diesel v8 in one of the later g wagon as well.

It was put in the GL, don't think the G had it

think so.
https://www.autoblog.com/2015/05/04/mercedes-g-class-update-v8-official/

 

[Mr Filipov]

It was put in the GL, don't think the G had it

I went for a ride in a G420 CDI many years ago. Was around 03/04.

 

[Pathfinder]

If you decide to rebuild it, grind in the valve seats and fit new valve seals, it would be false economy not to while the heads are off.

 

[Ge2tis]

If you decide to rebuild it, grind in the valve seats and fit new valve seals, it would be false economy not to while the heads are off.

Actually I'm removing the valves as I am writing...will update with pictures later on...a lot of them..

 

[EXMERCTECH]

When you get the crank checked.
Take the block and the rods with caps fitted and torqued up.
To check they haven't gone oval.

 

[Wighty]

Have you got space in the shed to put seating in buddy , you could sell tickets for this to recoup some of the money

 

[Ge2tis]

When you get the crank checked.
Take the block and the rods with caps fitted and torqued up.
To check they haven't gone oval.

Thanks for advice..will do...
As I understand, you've been MB technician...I am looking everywhere for information about installing new rods after the removal of old ones but can't really find anything anywhere...WIS advises to put new ones if they have ever been opened because of them being cracked or something and they wouldn't be fit for purpose...is that something that they do at dealership...hoping someone would know...

 

[Ge2tis]

Have you got space in the shed to put seating in buddy , you could sell tickets for this to recoup some of the money

Well...it's not the smallest of sheds but I couldn't fit a car inside..

 

[Wighty]

Well...it's not the smallest of sheds but I couldn't fit a car inside.. View attachment 39964 View attachment 39965

That's impressive , if that was in central London you could retire and live off the sale . Keep up the good work !

 

[LostKiwi]

Thanks for advice..will do...
As I understand, you've been MB technician...I am looking everywhere for information about installing new rods after the removal of old ones but can't really find anything anywhere...WIS advises to put new ones if they have ever been opened because of them being cracked or something and they wouldn't be fit for purpose...is that something that they do at dealership...hoping someone would know...

http://www.enginebuildermag.com/2015/09/connecting-rods/