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  #1  
Old 11-17-2012, 12:09 AM
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Question OM603 Installing new head gasket on Sunday

Removed the head, cleaned the 2 mating surfaces and ready to put the head back on. This is the biggest job I have ever done on a diesel engine and I do not want to mess up. I have the torquing sequence from the FSM and read everything thru. Anything I need to pay attention to? Any pitfalls? Do I need to do something special to the timing chain tensioner?

Thanks
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  #2  
Old 11-17-2012, 11:40 AM
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Just have a helper for placing the head; the gasket is $80 so you don't really want to booger it, especially if you don't notice until tomorrow when it leaks . . .

The tensioner just screws in. Oil pressure will charge it back up.
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  #3  
Old 11-17-2012, 08:30 PM
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Problem with my engine??

I put 2 spoonful of MMO into each cylinders to soak the rings last night as the head was removed. I found the oil is drained into the oil pan in 2 cylinders, the other 4 still has oil in there. I have problem with the rings on the 2 cyl? I also reached down the cylinders wall and swipe it with my hand. I found cyl two has 2 scratches.

Is my engine block shot? Shall I put the head together and hope for the best. The engine was running and did not smoke. The problem is shaky idle and smoke coming of the 1mm vent hole on the left back valve cover. Also I had water in the cylinders so the HG is definitely shot.

Any opinions?
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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

2 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.
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  #4  
Old 11-17-2012, 09:50 PM
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Pictures please !
You may have a problem with the rings.
How bad are the scratches?
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  #5  
Old 11-18-2012, 12:33 AM
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I can feel it. I have never seen a diesel cylinder wall up close so I do not know how bad it could be. I did a compression test on this engine a while back and they do not seem to be low.
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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

2 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.
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  #6  
Old 11-18-2012, 12:56 AM
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Oil flowing past the rings is not a big deal, after all they do have a gap. Maybe the ones that didn't flow might just have more carbon build-up. Since the compression check was OK, I wouldn't worry about a few scratches. I assume the block is still in the car. Removing it is a major task, so don't jump into that lightly.

I don't know about replacing cylinder liners in your OM603 aluminum block, if it came to that. That was cheap and easy in my OM617 (5 cyl) once the block was stripped.
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  #7  
Old 11-18-2012, 07:40 AM
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Make sure you are FOCUSED when tightening the head bolts. It is easy to lose track of where you are during the tightening sequence. In addition, I always put a line accross the top of the head bolt with a paint stick to make it easier to tell when they have been turned that 90 degrees.
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  #8  
Old 11-18-2012, 07:49 AM
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Quote:
Originally Posted by engatwork View Post
Make sure you are FOCUSED when tightening the head bolts. It is easy to lose track of where you are during the tightening sequence. In addition, I always put a line accross the top of the head bolt with a paint stick to make it easier to tell when they have been turned that 90 degrees.
I have four paint marks on each bolt of my 617 representing the 4 torque stages.

Are you sure the head is ok?
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  #9  
Old 11-18-2012, 10:41 AM
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Thanks for all the inputs. The head should be OK as the engine was running. I am not a very sophisticated mechanics and tackling engine work is not something I like to do.

I am going to put it back together and report.
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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

2 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.
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  #10  
Old 11-18-2012, 04:13 PM
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HELP HELP !!!

It all comes down to my inexperience. I had the head put back on and everything is going well until I try to put back the 2 front allen head bolts. I DROPPED the right hand side one into the engine.

How can I get it out. Is there anything I can remove to fish it out?
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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

2 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.
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  #11  
Old 11-18-2012, 04:26 PM
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About all you can do is try to fish it out with a magnet. You may luck out with a magnet.
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  #12  
Old 11-18-2012, 04:31 PM
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I cannot see it. Is there anything I can remove to have better access?
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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

2 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.
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  #13  
Old 11-18-2012, 04:43 PM
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Is it open to the pan like on an om617? If so, you could pull the oil pan and get it or find it from underneath.
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1986 300SDL - Coda
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  #14  
Old 11-18-2012, 04:50 PM
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Remove the lower oil pan. Hopefully it made it all the way through but I'd be surprised. You may have to just get yoru magnet on the stick and stick it down there and hope it picks it up.
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  #15  
Old 11-18-2012, 09:45 PM
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Don't need to drop the pan

On your 603 there is a side oil pan cover on the passenger side. You can pull that if needed for easier fishing!
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