Vaz -21213 Repair Manual page 31

Fig.2-50. Limit sizes for valve chamfer regrinding:
I - inlet valve; II - outlet valve
Fig.2-51. Pressing out the valve guides:
1- tool Ä.60153/R
Fig.2-52. Basic lengths to check the valve outer (a) and inner (b) springs
Fig.2-53. Valve spring checking diagram:
Ä - dimension in free state; Ç - dimension under load
When a new valve fails to take up clearance between the
valve guide and the valve rim, renew the valve guides using tool
Ä.60153/R (Fig.2-51).
Push in the valve guide complete with the circlip to the cylin-
der head to their stop.
After the valve is pressed into position, ream the valve guide
bores using tool Ä.90310/1 (for the inlet valve guides) and tool
Ä.90310/2 (for the exhaust valve guides).
Valve stem oil caps must always be renewed during the
engine overhaul.
Any damaged oil caps are renewed on the cylinder head
removed. Use special tool 41.7853.4016 to push the oil seals on
the guide.
Springs. Check the springs are not cracked and are ade-
quately tense; load test the springs to reveal any deformation
(Fig.2-52).
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