I need to replace the head gaskets on my 2.8L 12v 1995 Cabriolet. I understand the procedure up to removing the camshaftsprocket. I get it that the Camshaft Holding Tool fits into the holes on the locking plates, you loosen the nut, loosen the sprocket with a pullerand remove the belt. What I don't understand is, after I remove the sprocket from the cam shaft, remove the head, replace the gasket and the camshaft seals, How do I get the camshaft positioned so that the timing is correct?Knowledge is Power. Thanks for the help.
Hubturn

 

http://www.12v.org/engine/

 

http://www.12v.org/maintenance/repairs/tbelt.php

cool site

 

I always check that site first. Having never removed the cam or cam sprocket, Ido not know exactly how the sprocket attaches to the shaft, how the lock plate fitsto the sprocket, and if it is possible to install the shaft incorrectly, even using the cam holding tool.The lock plates look symmetrical, and that makes me think the cam holding tool will fit them correctly or 180 degrees out of proper rotation. That leaves 4 possibilities. Both correct, one 180 out, the other 180 out, or both 180 out. Am I worrying about nothing andwillitbe obvious once I have it apart? Bentleys diagrams are not always obvious. Thanks.

 

The Flat metal pieces that mount to the end of the camshaft onlt fit on one way. these are used to refrence the Camshaft at top dead center. After you remove the camshaft sprocket replaced these pieces and reinstall the Camshaft locking bar. Just a side note. Make sure that you leave the sprockets loose for the tensioning process when you retighten the belt. Once proper tension is obtained, Retorque the cam sprocket bolts and remove locking bar.

 

ccole4
I noticed in one of your other posts that you mention that the camshaft plates have holes in them that are of different size. Would I be correct in assuming that my 2.8L V-12 is also configured this way and therefore the camshaft holding tool will only fit into these holes one way - essentially idiot proofing the process of getting the camshafts at TDC for reassembly?It would have been nice if the Bentleys statement in the procedure, "Large holes in camshaft sprocket locking plates must faceeach other" had indicated the OTHER holes were smaller.Thanks

 

It should be the same. If you do not have the locking tool I would suggest getting one. Also get the tool for locking the crank. They are essential for proper belt tensioning. I think they are about $119.00 total for both.