Help!! 103 timing marks
 

Hi Guys,

I have searched but could not find any pics for this, I hope some one can help. I am trying to align the timing mark on my 89 300E with the 103 motor. My questions are:

1. What mark is the timing mark on the crank? I have a fin on the front of the lower timing cover, and the left edge of the crank sensor bracket. What do I use? Should it be on the number or the little line to the left or right of the T.

2. I see a dot on the lip of the crank, I feel like it should be straight up and down with the cam tower , at the 12 o'clock position. This aligns the cam locating pin to the left of the head at 9 o'clock, it the cam right?

3. What would be a common problem that a novice mechanic could do in replacing the head gasket on this motor that would keep it from starting.

Thanks guys for all of the help.

Rickie

Here is a picture for the crank
 

The T is aligned with the crank position sensor.
For the camshaft, there is a small hole at the front end of the cam (the piece that holds the cam gear) aligns with a notch on #1 rocker.

Camshaft notch
 

Meza,

I see many holes on the cam flange, where the gear attaches, how do I know which one? also I cant seem to locate a Notch on the rocker assembly. Can you describe it better as I don't have a service manual (yet), bought one on ebay last night.

Thanks,

Rickie