Removing And Installing Camshaft; Replacing Valve Stem Seals - Skoda Octavia Workshop Manual

OCTAVIA
Repairing Valve Gear
Notes:
♦ Cylinder heads with cracks between the
valve seats or between a valve seat ring and
the spark plug thread may continue to be
used without any reduction in life provided
these are slight initial cracks which are not
more than 0.3 mm wide, or cracks exist only
at the first 4 turns of the spark plug thread.
♦ After installing new bucket tappets, the en-
gine must not be started for about 30 min-
utes (otherwise valves would strike the pis-
tons.
♦ After carrying out work on the valve gear,
carefully crank engine at least 2 revolutions
to ensure that no valve touches the piston
when the engine is started.
1 - 100 Nm
♦ use counterholder T30004 for slack-
ening and tightening.
2 - Camshaft
♦ with sensor rotor for Hall sender -G40-
♦ to remove and install, take off toothed
belt ⇒ page 13-7 installation position
fixed by parallel key -item 4-
Edition 04.03
S00.5127.54.20
Cylinder Head/Valve Gear
3 - Seal
♦ replace ⇒ page 15-14
4 - Parallel key
♦ ensure tightly fitted
5 - 20 Nm
6 - Bearing cap
♦ installation position ⇒ Fig. 2
♦ installation sequence ⇒ page 15-16,
♦ apply a thin film of sealant AMV 174
7 - Camshaft
♦ inspecting axial play ⇒ Fig. 1

♦ removing and installing camshaft

♦ runout: max. 0.01 mm
♦ marking, timing ⇒ Fig. 4
8 - Bucket tappet
♦ do not mix up
♦ with hydraulic clearance compensa-
♦ inspecting ⇒ page 15-18
♦ place down with contact surface fac-
♦ before installing, inspect axial play of
♦ oil contact surface
9 - Collets
10 - Valve spring retainer
11 - Valve spring
♦ removing and installing
-
-
12 - Valve stem seal
♦ replacing ⇒ page 15-19
13 - Valve guide
♦ inspecting ⇒ page 15-21
♦ replacing ⇒ page 15-21
♦ repair version with collar
Removing and installing camshaft
004 01 to contact surface of bearing
cap 1
⇒ page 15-16
tion
ing down
camshaft ⇒ Fig. 1
with cylinder head removed:
use MP 1-211 and MP 1-213 together
with supporting plate MP 1-218
with cylinder head installed:
⇒ page 15-19, Replacing valve stem
seals
15
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