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Camshaft timing chain - exploded view >
< Removing and installing timing chain cover (bottom)
A3 Mk2
Power unit
4-cylinder direct petrol injection engine (1.8 ltr., 2.0 ltr. 4-valve turbo), mechanics
Engine cylinder head, valve gear / Chain drive
Renewing oil seal for vibration damper
Renewing oil seal for vibration damper
Renewing oil seal for vibration damper
Special tools and workshop equipment required
t
Locking pin -T10060 A-
t
Counterhold tool -T10355-
t
Thrust piece -T10354-
t
Thrust piece -T10368-
t
Extractor tool -T20143-
Removing
–
Release fasteners
-1 and 2-
and remove centre noise insulation.
–
Release fasteners
-1, 2, 3-
and remove noise insulation (right-side).
Vehicles with auxiliary heater:
–
Slacken clip
-1-
and remove bolt
-2-
.
–
Detach exhaust silencer for auxiliary heater.
All vehicles:
–
Remove bolts
-arrows-
.
–
Remove air pipe (lift clips
-items 1 and 2-
).
Caution
If a used belt runs in the opposite direction when it is refitted, this can cause breakage.
Before removing, mark direction of rotation of poly V-belt with chalk or felt-tipped pen for re-installation.
–
To slacken poly V-belt turn tensioner in direction of
-arrow-
.
–
Lock tensioner with locking pin -T10060 A-
–
Remove poly V-belt from pulley on vibration damper.
Caution
Risk of damage to engine.
To avoid disturbing valve timing, do not turn crankshaft out of “TDC” position when vibration damper is removed.
–
Turn vibration damper to “TDC” position
-arrow-
using counterhold tool -T10355-.
l
Notch on vibration damper must align with arrow marking on cover for timing chains (bottom).
–
Remove bolt for vibration damper using counterhold tool -T10355-.
–
Detach vibration damper and fit thrust piece -T10368- in its place.
–
Pull out oil seal using extractor tool -T20143/2-.
Installing
l
Tightening torques
→ Chapter „Poly V-belt drive - exploded view“
–
Clean contact surface and sealing surface.
–
Remove thrust piece -T10368-.
–
Use thrust piece -T10354- and bolt for vibration damper to pull in oil seal
-arrow-
onto stop.
Note
t
Renew bolt for vibration damper.
t
Renew O-ring.
Perform further installation in reverse order, paying attention to the following:
–
Install vibration damper
→ Chapter
.
–
Install poly V-belt
→ Chapter
.
Power unit
4-cylinder direct petrol injection engine (1.8 ltr., 2.0 ltr. 4-valve turbo), mechanics
Engine cylinder head, valve gear / Chain drive
Renewing oil seal for vibration damper
Camshaft timing chain - exploded view >
< Removing and installing timing chain cover (bottom)