BMW S38B38/M5 Chain Tensioner Step by Step Procedure Guide

The herein step by step guide are for BMW S38B38 (M5) Chain Tensioner Procedures:

1.  Put the seal on the new chain tensioner and place the tensioner by hand (The tensioner hook will get the tensioner rail)
2.  Torque the Chain tensioner to 55 Nm
3.  Put the gearbox in 5th gear and push the car for-and backwards (or turn the crankshaft several times). Repeat this until the camshafts start turning. This causes that the chain tensioner will be unlocked.
4.  Before checking the unlocking, the crankshaft has to be turned within the tolerance of the chain. This means that the camshafts may not turn. The chain tensioner is unlocked if the maximum movement near the vibration damper is one tooth and one tooth hole.

5.  Turn the M8 bolt at the back side of the chain tensioner until you feel resistance, if this is not the case. Turn the bolt loose again and repeat the procedure from step 3 and start checking the chain tensioner again with step 4.