720D timing

ps. If necessary, I can find TDC of left cylinder, identify that mark on the flywheel and go from there.

thanks for your input.
tks

I read the manual and was careful not to touch anything warned against unless special tools were available. Intrestingly enough, my manual warned that pump damage could occur if the timing were set so that the mark on the pump went out of sight when the flywheel was turned 90 degrees from the match marks which is exactly how I found mine before I touched anything.

With the new found confidence from the first response, I felt good about moving it. Could have been my lucky day, but afterwards the tractor cranked immediatly and had very little smoke (less than before I think). I did not get to work it hard, but as I moved the injection timing earlier, I am guessing it will pull at least as good as before.

If there is something otheres can learn, I would like to pass it along. Don't turn the flywheel backwards even for small adjustments to align timing marks. The apparent backlash gave me a slight but detectable misalignment when I went around 720 deg to verify. After I figured out what may be happening and made sure I only turned the flywheel forward, everything became very stable. Thanks for the help.

Matthew:

I think the mark is the same for a 720D as it is on my 70D. The mark is indeed pretty much on the horizontal centerline of the crankshaft. Also, there is a hole for the flywheel cover at about 8 o'clock. Count 10 teeth up from this and the mark ought to be there. If you need better photos, I can get you some tomorrow.

Frank-in-Tallahassee
70D // 855