m103 chain tensioner

[redrocket]

Well today I pulled cam out of my 89 300se and lo and behold the lobes were totally thrashed on #6 and # 5 cyl. wasn't much better along with bad rocker's i only have one question if anyone can help that would be good,before i took apart i wedged a big screw driver down between the chain where they almost come together and you can move the tensioner back very easy so i did so and removed the cam gear easily and left the chain in place while i slid the c-clip towards the top of cam and pulled up and back and it came out very easy,i just don't know if the tensioner should move back that easy ,and with engine running does oil pressure apply to the tensioner to make it go forward,thanks for any help on this.