I believe you may have put the camshaft on backwards. I think the TDC mark lines up with the keyhole to make this an undetectable mistake. Please check.. not completely positive from your pictures

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yeah.. you do^^

http://www.pauldrayton.com/uploadfiles/merc/Service/W123/w123CD2/Program/Engine/617/05-220.pdf

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Bump

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

conclusion??

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i've still haven't figured this out...
it doesn't seem POSSIBLE to install the camshaft backwards...
or are you saying the camshaft SPROCKET?

i attached the picture from that pdf that JT20 referenced...sure seems to look like what i did.

anybody got any some helpful evidence?
JT20?
thoughts?

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-lee
'83 300CDT (286k)

former proud owner of:
'85 mercedes euro 300TD
'80 mercedes 300TD
'77 mercedes 280e
'80 mercedes euro 250
'82 mercedes euro 250

It's impossible to install the camshaft backwards...........

Take a look at the camshaft itself and attempt to determine if it's sitting forward of the desired position in the bearings. The cam usually moves rearward.........by itself.........until the thrust washer stops the movement.

However, if something has hung the camshaft and is preventing it from moving to the desired position.........that's your issue.

yes. It is possible that the cam SPROCKET is on backwards

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BC.. take a look at the photos an then the diagram above. Notice the lip and recess from the front of the camshaft. The keyhole on the camshaft goes all the way through.

If, however, the OP has marked the camshaft sprocket before dismantle, and has his/ her mark showing on the side that he / she made it, then I agree. - it is not wrong.

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http://www.peachparts.com/shopforum/attachments/diesel-discussion/58683d1220219007-timing-chain-big-uh-oh-assembly-1.jpg

this side.. with the negigeable recess goes on the front of the engine!!!

BC.. see difference

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Read the thread:

wow.. how did I miss that. feeling very stupid.

In the pictures the recess is shown frontwards.. this is incorrect. That is all that I am certain of.

sorry again BC

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one way to determine the original position (if the washers and sprocket are the original) is to remove the sprocket again, and look very closely a the markings on the rear spacer/ washer and the surfaces of the sprocket, it should be determinable from highlights and varnish. Did you take any pictures before you dissassembled?

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my engine works

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