The 116/117 engines do not use a ratcheting tensioner. The tensioner has a heavy spring and is then pumped up by oil pressure. When you did your timing chain and upper/lower rails you should have replaced the tensioner, even if on nothing more than principal.
'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.