Rolling in a new chain was a cake walk. The important thing is to use a guide or zip straps to ensure the infeed AND out flow of old chain stay in constant contact with the cam sprocket on the right side (passenger). Took about an hour to roll the chain in, would have only been 25-30 minutes if I had used the guide.
If you don't keep both feeds in contact with the sprocket, you are sure to jump time. If you catch it when it happens, you can correct it as you go, if not, you'll get jammed up with valve/piston interference.
I have a running diary of what I've been doing to the 560 in the Open Forum, I discussed the guides and rolling in the chain. I was advised to do the guides prior to rolling the chain, so I did and I offer the same advice.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.