Timing Marks - '91 9000 CD 2.3L Turbo

They should all match up. FYI there are more timing marks than you described. At No. 1 piston TDC,

1. each cam sprocket has a mark and it should be at 12 o'clock,
2. each cam shaft has a mark at the first cam hold down and it should line up with the index on the hold down,
3. the Woodruff key on the crank shaft is at 12 o'clock,
4. there is a mark on the flywheel, it should be at 12 o'clock and line up with an index on the rear engine plate.

Of course if you do not remove the timing cover, you cannot see 3. and if you don't remove the transmission you cannot see 4.

If you pull off the harmonic balancer (not a trivial affair) you will see the keyway, even with the timing cover still on.

On some transmissions (my '92 and '93 9000's w/ auto boxes for example) there is a hole in the upper trans bellwhousing to allow you to see a timing indicator.

-Fred W

You're right about the crank pulley. More information probably than you'll need. This is after completing my auto to 5 speed conversion on a 94 cde. The timing sprocket has 19 teeth. The balance shaft sprocket has 38 teeth, so are the two cam sprockets. So the crank rotate twice as much as the cam. The flywheel has 135 teeth.

When you try to line everything up, do not be alarmed if you line up the timing sprocket and the cam sprocket and then find the flywheel timing mark is off by a tooth or two. Remember a timing sprocket tooth spans about 7 teeth on the flywheel (135/19).

AND remember that the two balance shafts rotate in opposite directions so if the cams are a little bit out, the balance shafts are twice as much out and in opposite directions. Took me a long time to figure this out after altering the chain about ten times!