Does anyone on the forum have a diagram or FSM map showing the oil passage openings on a OM617 cylinder head -I want to chase the passages and check for any blockages and want to catch them all -thanks!

if you google, you will find.

edit: I actually couldn't find it. It used to be the first thing that would pop up.

I couldn't get my file to post either.

However, if you do some digging, you'll find a shop that purports to have found a solution for the weak oiling of the camshaft on some models.

Their fix was to drill out certain bores in the head to increase flow while having a low impact on pressure in the system.

Attached Files

oilpass.pdf (75.7 KB, 162 views)

no luck yet -do you have a link?

Yes, I remember reading about that....

Wasnt it summit about drilling out/reaming the cyl-head-bolt-hole and the cross-drilling that takes the oil to the front tower bearing?

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Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....

it escapes me, but it seemed much too complex for any DIYer with just common tools.

The fact that they went through such trouble and that they found the need for a remedy always worried me though.

I just want a simple cylinder head diagram that shows the oil galley passage openings so I can run a wire down them to check for blockages . . anybody?

sorry. its not working out.

I can tell you what I see in the diagram. And its not very detailed, so I don't think it would help you much.

oil comes from first main crank bearing, up IP side through bottom of head into first cam bearing the to the rest of the cam via oil tube on top.

rest of oil leaves first cam bearing and goes to tensioner.


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this confuses me though because there is an oil port in the back of the head also..... maybe its just a drain?

check the 2nd post

I thought that there were a series of small passages that allow oil to drain back to sump -am I wrong here? Who knows?

Answer to your question? Well I don't have that but my OM617 (cylinder) head is off at the moment. Do you need photographs?

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

do you see approximately where the drains are in the head? How many, what diameter (roughly) are they tiny or quite large? Thanks for the help!

For some reason I think they are large and at the back of head. Not sure why I think that.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
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1999 Fuso FG Expedition Camper
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Thanks Kerry, will take another look!

It is dark here now - no light in garage - add in any other pathetic excuse you choose...

I'll have a look tomorrow for you (in about 15 hours from now) and take some photos if I think they'll help.

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Thanks! Curious to see what you find, thanks!