Installing (adjusting valve timing) Audi A6 C5 facelift

Installing (adjusting valve timing)

1. Camshafts aligned using T40030 camshaft adjuster gauge
2. Crankshaft aligned using T40026 locking pin
3. Camshaft gears loosened.

Note. Replace gaskets, O-rings and self-locking bolts. When turning camshaft, crankshaft must not be at TDC for any cylinder. Valves and/or pistons may be damaged.

1. Bolt in camshaft gears 1 to 4 far enough so they can still just be turned without canting.
2. Install toothed belt as depicted in illustration. see scheme 133 For exact valve timing adjustment, the toothed belt must make exact contact with front edge of all toothed belt gears.
3. Using 3387 pin wrench, turn eccentric pulley -1- in clockwise direction until the handle of the pin wrench is exactly above the center axle of coolant pump gear -2-.
4. Hold pin wrench in this position and tighten bolt -3- to 45 Nm.
5. Place torque wrench horizontally on socket-head of tensioning lever.
6. Turn with 45 Nm in direction of arrow to pre-tension toothed belt.
7. Using 8 mm socket head wrench, turn toothed belt tensioning roller in direction of arrow until T40011 pin can pulled out.
8. Place torque wrench horizontally on socket-head of tensioning lever.
9. Turn with 25 Nm in direction of arrow to tension toothed belt.
10. Insert T40028 socket at camshaft adjuster of exhaust camshaft on left cylinder bank.
11. Turn rotor of camshaft adjuster clockwise to 10 Nm up to stop (arrow).
12. Turn rotor of camshaft adjuster at right cylinder bank clockwise to 10 Nm up to stop (arrow).
13. Tighten bolts for all four camshaft gears to 100 Nm.
14. Insert caps -2- with new O-rings -1- at camshaft gears and secure them with the securing ring.
15. Remove T40030 camshaft adjuster gauge.
16. Remove T10026 alignment bolt and thread sealing plug of TDC marking with new O-ring into cylinder block.
17. Installation is reverse of removal, noting the following
18. Install cylinder head covers, see «INSTALLING»(ref-196254-S32205047082005100700000) or «INSTALLING»(ref-196254-S38205107462005100700000).
19. Install toothed belt guards (see «TOOTHED BELT COVER, REMOVING AND INSTALLING»(ref-196254-S35451058232005100700000) ).
20. Install harmonic balancer (see «HARMONIC BALANCER, REMOVING AND INSTALLING»(ref-196254-S37420162542005100700000) ).
21. Install ribbed belt (see «INSTALLING»(ref-196254-S10883342812005100700000) ).

Scheme 363