Vaz -21213 Repair Manual page 17

Fig. 2-18. Cylinder head bolt tightening sequence
Fig. 2-19. Aligning the timing marks on the crankshaft sprocket and cylin-
der block
Fig.2-20. Centering pins for camshaft bearing housing
Turn the flywheel so that the mark on the crankshaft sprock-
et is against the cylinder block mark (Fig.2-19).
Check to see the camshaft bearing housing centering pins
are in position (Fig.2-20). Refit the sprocket to the camshaft com-
plete with the bearing housing and turn the camshaft so that the
timing mark in the sprocket is aligned against the mark on the
bearing housing (Fig.2-21). Remove the sprocket and without
changing the camshaft position, refit the bearing housing to the
cylinder head so that the centering pins are in the respective
bores of the bearing housing. Secure the bearing housing, tight-
ening the nuts in the sequence as shown in Fig.2-22.
Refit the chain vibration damper.
Refit the camshaft timing chain:
- fit the chain onto the camshaft sprocket and position the
sprocket so its TDC mark is aligned with the respective mark on
the bearing housing (Fig.2-21). Do not tighten the sprocket bolt
fully;
- fit the sprocket to the oil pump shaft, but do not tighten the
retaining bolt fully;
- fit the chain tensioner shoe and tensioner, but do not tight-
en the cap nut so that the tensioner spring can compress the
shoe; screw the chain stop pin into the cylinder block;
- turn the crankshaft two turns forward to ensure the chain
tension required; check the indentations in the sprockets are
aligned with TDC marks in the cylinder block and bearing hous-
ing (Fig.2-19 and Fig.2-21);
- when the marks are aligned, hold the flywheel stationary
with tool Ä.60330/R (Fig.2-10), then tighten the sprocket securing
bolts and chain tensioner cap nut to the torques specified, bend
the sprocket bolt lock washers; should the marks are not aligned,
repeat the chain refitting procedure.
Fig.2-21. Aligning the timing mark on the camshaft sprocket against bear-
ing housing mark:
1 - mark in sprocket; 2 - mark on bearing housing
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