Assembly overview - parts of chain drive — VW

Assembly overview - parts of chain drive
Timing housing
Cylinder bank 2.
Lightly lubricate contact surfaces of oil seals before installing.
Removing and installing (see the separate procedure)
Removing and installing camshafts.
Dismantling and assembling
Fig..
8 Nm
Pivot pin, 18 Nm
For tensioning rail
Item
Tensioning plate
For camshaft timing chain
Item
20 Nm
Pivot pin, 18 Nm
For guide rail
Item.
Guide rail
For camshaft timing chain
Item
Timing housing
Cylinder bank 1.
Lightly lubricate contact surfaces of oil seals before installing.
Removing and installing (see the separate procedure)
Removing and installing camshafts.
Dismantling and assembling
Fig..
Exhaust camshaft adjuster
Cylinder bank 1.
Identification: B1.
With dowel pin, installation on camshaft is possible in one position only.
Rotate engine only with camshaft adjuster installed.
Installing (see the separate procedure)
Adjusting valve timing.
60 Nm + (1)
/ (4) turn (90°) further
Renew.
Contact surface of sender wheel must be dry around bolt head when installed.
To remove and install, counterhold using 32 mm open-end spanner on camshaft (see the separate procedure)
Removing and installing camshafts.
Inlet camshaft adjuster
Cylinder bank 1.
Identification: B1.
With dowel pin, installation on camshaft is possible in one position only.
Rotate engine only with camshaft adjuster installed.
Installing (see the separate procedure)
Adjusting valve timing.
Camshaft timing chain
Cylinder bank 1.
Before removing, mark direction of rotation (installation position)
Fig..
Installing (see the separate procedure)
Adjusting valve timing.
Pivot pin, 12 Nm
For tensioning rail
Item
Tensioning plate
For camshaft timing chain
Item
To remove, rear sealing flange must be removed.
Seal
Renew if damaged or leaking.
Chain tensioner, 40 Nm
For camshaft timing chain
Item
Only rotate engine when chain tensioner is installed.
60 Nm + (1)
/ (4) turn (90°) further
With
“left-hand thread”.
Renew.
To loosen or tighten, use counterhold
T10069 (see the separate procedure)
, Adjusting valve timing.
Intermediate shaft
Before installing, moisten with engine oil.
Chain sprocket
For camshaft timing chains
Item,
Item and
Item.
Installing (see the separate procedure)
Adjusting valve timing.
Chain tensioner with tensioning plate
For timing chain
Item.
Secure chain tensioner with a drill bit (∅ 3.5 mm).
Only rotate engine when chain tensioner is installed.
Securing clip
Chain sprocket
For timing chain
Item.
Built into crankshaft.
Fitting chain (see the separate procedure)
, Adjusting valve timing.
Timing chain
Before removing, mark direction of rotation (installation position)
Fig..
Installing (see the separate procedure)
Adjusting valve timing.
Guide rail
For timing chain
Item.
Locating pin without collar, 10 Nm
For guide rail
Item.
10 Nm
Renew.
Intermediate shaft
Thrust bearing for
Item.
Guide rail
For camshaft timing chain
Item
To remove cylinder head, upper pivot pin
Item needs to be unbolted from cylinder head.
To remove guide rail, rear sealing flange must be removed.
Pivot pin, 10 Nm
For guide rail
Item.
9 Nm
Chain tensioner
For camshaft timing chain
Item
Before removal, press together chain tensioner and secure it with drill bit (∅ 3.5 mm).
Only rotate engine when chain tensioner is installed.
Stop
For chain tensioner
Item.
Screwed into tensioning rail
Item.
Exhaust camshaft adjuster
Cylinder bank 2.
Identification: B2.
With dowel pin, installation on camshaft is possible in one position only.
Rotate engine only with camshaft adjuster installed.
Installing (see the separate procedure)
Adjusting valve timing.
Inlet camshaft adjuster
Cylinder bank 2.
Identification: B2.
With dowel pin, installation on camshaft is possible in one position only.
Rotate engine only with camshaft adjuster installed.
Installing (see the separate procedure)
Adjusting valve timing.
Camshaft timing chain
Cylinder bank 2.
Before removing, mark direction of rotation (installation position)
Fig..
Installing (see the separate procedure)
Adjusting valve timing.
Marking timing chains
Mark timing chains before removing (e.g. with paint, arrow pointing in direction of rotation).
Note
Do not mark chain by way of centre punch, notch or the like.