I agree that probably nothing was done with the tensioner. After the chain goes slack, the tensioner moves and will not return to its original position. This will put too much force on sprockets. The tensioner is a combination one-way ratchet and a hydraulic plunger that runs off oil pressure.

I'm not sure if you realize the torque you are asking for has little effect on the tensioner force applied to the chain. It is only a mounting load.

To properly reset tensioner load, the following sequence must be followed:

1. Remove tensioner assembly
2. Install chain
3. Disassemble tensioner
4. Install tensioner outer body
5. Install inner works of tensioner

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95 E320 Cabriolet, 169K