Checking The Hydraulic Supporting Elements For Engines With Code Bkd, Azv - Skoda Octavia II 2004 Workshop Manual

2.6 Checking the hydraulic supporting ele‐
ments for engines with code BKD, AZV
Special tools and workshop equipment required
♦ Feeler gauges
Note
The hydraulic supporting elements pressed into the valve lev‐
♦
ers cannot be repaired.
Irregular valve noises when starting engine are normal.
♦
Test sequence
– Start engine and allow to run until the radiator fan starts. In‐
crease speed to about 2500 rpm for 2 minutes and undertake
a test drive if necessary.
Note
If there are irregular valve noises which disappear after a long
drive but keep reappearing on short journeys then the return-flow
check tube is defective. Fitting location: in the oil filter holder. The
return-flow check tube cannot be replaced individually.
If the valves are still making loud noises, determine the defective
hydraulic supporting element as follows:
– Remove cylinder head cover
– Turn the crankshaft so that the cams of the supporting element
being tested are pointing upwards.
♦ For vehicles with manual transmission, push the vehicle for‐
ward with the 4th gear engaged and the ignition switched off.
♦ For vehicles with automatic transmission, turn the crankshaft
at the central screw.
– Press the valve lever downwards using a screwdriver
-arrow- and measure the clearance between the cam and roll‐
er of the valve lever.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted
unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability
If a 0.20 mm feeler gauge can be fitted between the cam and the
with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�
valve lever roller:
– Replace valve lever with hydraulic valve clearance compen‐
sation; to do so, remove valve lever
Note
After installing the camshafts, the engine must not be started
♦
for about 30 minutes. The valve lever with hydraulic valve
clearance compensation must settle (otherwise the valves
would strike the pistons).
After carrying out work on the valve gear, carefully crank en‐
♦
gine at least 2 revolutions to ensure that no valve touches the
piston when the engine is started.
2.0/100; 103 kW TDI PD Engine - Edition 01.2018
⇒ page 72 .
⇒ page 98 .
Octavia II 2004 ➤ , Octavia II 2010 ➤
2. Repairing Valve Gear
107