Unlock the "arrow" clamps using the "T10527" puller and remove the air duct.
Press the release buttons and disconnect the hose "1". Unscrew the screws "arrows" and remove the crankcase ventilation hose.
Hang up the wiring harness "arrows". Unscrew screws -1, 3- and remove the protective cover "2" of the toothed belt of the cooling system pump.
Unscrew the "arrow" screws and remove the cover "1". Release the hoses from the fastening "3".
[Material is available on the website: skodabook]
Unscrew bolt "2". Disconnect clamps "arrows" and remove upper protective cover of toothed belt "1".
Unscrew the "arrow" screws and remove the cover from the exhaust valve timing adjuster.
Caution! Collect leaking engine oil! To protect the timing belt from leaking engine oil, place a rag under the valve timing adjuster. Belt drive parts - camshaft sprockets, crankshaft sprocket, tension roller and guide roller must be degreased.
Drain the coolant. Unscrew screws -A...D- and press cover "1" of the thermostat to the side. Remove the noise-insulating casing.
Turn the crankshaft to "TDC" as follows. Unscrew the threaded plug of the "TDC" hole on the cylinder block. Screw the locking bolt "T10340" into the cylinder block until it stops and tighten to a torque of 30 Nm. Turn the crankshaft until it stops in the direction of engine rotation. The crankshaft counterweight is now adjacent to the locking bolt.
Note: The locking bolt "T10340" locks the crankshaft only in the working direction of rotation.
Caution! Risk of engine damage! If the locking screw "T10340" does not screw in all the way, the crankshaft is not in the correct position! In this case, proceed as follows; Loosen the locking screw. Turn the crankshaft 90° in the direction of engine rotation. Screw the locking bolt "T10340" into the cylinder block until it stops and tighten to a torque of 30 Nm. Turn the crankshaft in the direction of engine rotation until it stops.
On both camshafts, the asymmetrically located recesses "arrows" on the gearbox side should now point upwards, as shown in the figure. On the exhaust camshaft "A", these recesses - the upper arrows - are accessible through the holes in the pulley for driving the coolant pump. On the intake camshaft "E", these recesses - the lower arrows - are located above the middle of the camshaft.
Note: The camshafts have two pairs of recesses: one symmetrical, the other asymmetrical. At TDC, the asymmetrical pair of recesses should be located above an imaginary horizontal center line.
If the camshafts are not installed as described above: unscrew the locking bolt "T10340", turn the crankshaft one turn and set it to "TDC" again. If the camshafts are installed as described above: insert the locking tool "T10494" into the camshafts until it stops and tighten the screw "arrow" by hand.
Note: The camshaft locking tool "T10494" must be inserted easily. The camshaft locking tool must not be installed with an impact tool.
If the camshaft locking tool "T10494" does not install easily.
Caution! To avoid damaging the timing belt, do not use sharp tools!
Press the "T10487" tool in the "direction of the arrow" onto the toothed belt.
At this time, insert the camshaft locking tool "T10494" all the way into the camshaft and tighten it by hand using the bolt "arrow".
Caution! Risk of damage to the camshaft. Do not use the "T10494" camshaft locking devices as a stop.
Tighten the "arrow" screw by hand.
Unscrew the threaded plug "1" on the intake camshaft pulley using the stop "T10172" with the adapter "T10172/1".
Loosen bolts -1,2- by about one turn. To do this, use the puller "T10172" with adapters "T10172/2" and "T10172/1".
Caution! Changing the direction of rotation of a used timing belt can damage it. Before removing the belt, mark the direction of rotation with chalk or a felt-tip pen for reinstallation.
Loosen screw "1" with key "T10500". Loosen tension roller by turning eccentric "2" with key "T10499".
Caution! Risk of damage to the timing belt! The timing belt is made using fiberglass. Therefore, its bending diameter should not be less than 50 mm. Otherwise, the service life of the timing belt will be significantly reduced.
Remove the timing belt from the camshaft pulleys.