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

__________________
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.

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.

__________________
James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k

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?

__________________
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.

Pictures please !
You may have a problem with the rings.
How bad are the scratches?

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

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.

__________________
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.

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.

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.

__________________
Jim

I have four paint marks on each bolt of my 617 representing the 4 torque stages.

Are you sure the head is ok?

__________________
Chad
2006 Nissan Pathfinder LE
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
1985 300CD - Gladys

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.

__________________
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.

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?

__________________
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.

About all you can do is try to fish it out with a magnet. You may luck out with a magnet.

__________________
Jim

I cannot see it. Is there anything I can remove to have better access?

__________________
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.

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.

__________________
Chad
2006 Nissan Pathfinder LE
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
1985 300CD - Gladys

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.

__________________
Jim

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

__________________

1986 300SDL 440,xxx