Note: Replace the screws that are tightened to the specified angle. If the sealing ring of the threaded plug is damaged, replace the sealing ring.
Check the TDC position of the camshaft and crankshaft: The camshaft locking tool "T10494" is installed on the camshaft housing.
Caution! Risk of damage to camshafts. Do not use the "T10494" camshaft locking tool as a stop.
The locking bolt "T10340" is screwed into the cylinder block until it stops and tightened to a torque of 30 Nm. The crankshaft is turned forward until it touches the locking screw "T1034 0" ="TDC" position. Screw in new screws "1" and "2" for fastening the camshaft pulleys and tighten by hand. The camshaft pulleys should still turn on the camshafts, but should not wobble.
The projection of the tension roller "arrow" must enter the cast recess of the cylinder head.
Note: When installing/reeving the timing belt, observe the correct sequence.
Lift the toothed belt up and install it on the guide roller "1", the tension roller "2" and then on the camshaft pulleys "3" and "4".
Turn the eccentric "2" of the tension roller with the key "T10499" - in the direction of the arrow - so much that the arrow "3" goes approximately 10 mm to the right beyond the notch. Turn the eccentric back so much that the arrow is exactly opposite the notch.
Caution! Use a torque wrench to tighten "VAS 6583-1" When setting the tightening torque on the torque wrench "IMS 6583" it is necessary to enter the length parameter indicated on the nozzle "T10500"!
While holding the eccentric in this position, tighten bolt "1" to a torque of 25 Nm, using the "T10500" attachment with the torque wrench -VAS.6583-.
Note: Later, after turning the crankshaft or starting the engine, there may be slight deviations of the arrow "3" from the position opposite the notch. This is normal and does not have a negative effect on the tension of the toothed belt.
Tighten bolts -1,2- to an initial torque of 50 Nm, using the stop "T10172" with adapters "T10172/1". Unscrew the lock bolt "T10340". Unscrew the screw "arrow" and remove the camshaft lock "T10494".