Yes, the oil tubes just pull out. Check the O-rings on each one though- about 1/4 of mine were nicked. The O-rings are available as an individual part or you can buy them from any bearing store if you use an old one for size.
You can turn the engine over with the starter provided the entire valve train, including the tensioner, is intact and properly tightened. That said, it is unlikely you will hit the mark correctly without having to do it multiple times so it is not worth it in my opinion. As others have said, just use a wrench or ratchet to turn the engine the correct direction (the correct direction only!).
Once any part of the valve train is loosened or removed, including the cam chain tensioner, you should not turn the engine over with the starter. Valves may strike pistons and that will surely turn into a very expensive valve adjustment. The best method is not to use the starter again until the engine is buttoned up and all hoses and wiring is in place.
Brian
I'm in the planning stage of adjusting the valves on my C14. In fact I pulled the fairings off last night.
I've done it multiple times on my old 99 C10, but the C14 is a little different =8-)) !!
I've read just about all the threads on both forums and the service manual but still have a few questions.
Do the 4 oil tubes just pull out ?? IE no clamps or brackets holding them in place.
To turn the engine over to get to # 1 and # 4 piston TDC, I'm assuming bumping it with the starter is acceptable or not ??
Thanks in Advance !