Note: Replace screws that are tightened to the specified angle. If the o-ring of the screw plug is damaged, replace the o-ring.
Check position "TDC" camshaft and crankshaft. Install camshaft clamp -T10494- on camshaft housing.
Carefully! Risk of damage to camshafts. The camshaft clamp -T10494- must not be used as a stop.
Screw in locking bolt -T10340- into cylinder block as far as it will go and tighten to 30 Nm. Crankshaft turned forward until it touches locking screw -T10340- ="TDC" position". Screw in new screws -1, 2- for camshaft pulleys by hand. The camshaft pulleys should still turn on the camshafts, but should not oscillate.
The protrusion of the tensioning roller -arrow- must fit into the molded recess in the cylinder head.
When installing/reserving the toothed belt, observe the correct sequence. Raise the toothed belt and place it on the guide pulley -1- and tensioning pulley -2- and then on the camshaft pulleys -3- and -4-.
Turn eccentric -2- of tensioning pulley with wrench -T10499- in direction of arrow- until arrow -3- is approx. 10 mm to the right beyond the recess. Turn the eccentric back so that the arrow is exactly opposite the notch.
Carefully! Use torque wrench -VAS 6583- for tightening! When setting the tightening torque on the torque wrench -UAZ 6583-, you must enter the length parameter indicated on the nozzle -T10500-!
While holding the eccentric in this position, tighten the bolt -1- to 25 Nm. To do this, use socket -T10500- on torque wrench -VAS 6583-.
Note: Later on, after turning the crankshaft or starting the engine, the arrow -3- may slightly deviate from the position opposite the notch. This is normal and will not adversely affect the timing belt tension.
Tighten screws -1, 2- to 50 Nm using stopper -T10172- with adapters -110172/1- and -T10172/2-. Unscrew locking bolt -T10340-. Unscrew bolt -arrow- and remove camshaft clamp -T10494-.
Checking the installation of the timing phases
Rotate crankshaft 2 turns in direction of engine rotation. Screw locking bolt -T10340- into cylinder block as far as it will go and tighten to 30 Nm. Turn the crankshaft further in the direction of engine rotation until it stops. The counterweight of the crankshaft is now adjacent to the locking bolt.
Note: The locking bolt -T10340- only locks the crankshaft in the working direction of rotation. Camshaft lock -T10494- must be easy to insert. The camshaft lock must not be installed with an impact tool.
Insert locking pin -T10494- into camshafts as far as stop and hand-tighten screw -arrow-. If the camshaft clamp -T10494- cannot be inserted, the valve timing is incorrect: repeat the valve timing adjustment. If the camshaft lock is moved, the valve timing is normal. Unscrew locking bolt -T10340-. Unscrew bolt -arrow- and remove camshaft clamp -T10494-. Tighten bolts -1, 2- to final tightening torque using stop -T10172- with adapters -T10172/1- and -710172/2-.
Tighten screw plug -1- to 20 Nm using stop -T10172- with adapter -T10172/1-.
Carefully! Risk of engine damage. After completing the work, make sure that the locking bolt -T10340- and the camshaft lock -T10494- are not left on the engine.
Installation in reverse order.