Volvo D 20 Service Manual page 44

Group 2l Engine
Cylinder head, assembly
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G3
Early and late tvpe valves. valve collets (locks)
and upper spring seats
E a r l y t y p e v a l v e s a n d c o l e t s h a v e o n e l o c k i n g g r o o v e
whereas late tYpes have three
O n l y l a t e t y p e s a r e a v a i l a b l e a s s p a r e p a r l s
C o n s e q u e n t l y w h e n i n s t a L l i n g a n e w v a l v e , t h e c o l l e t
a n d u p p e r s p r i n g s e a l m u s t a l s o b e r e p l a c e d w i t h n e w
N e w s p r i n g s e a t s a r e e i r h e r c o p p e r c o a t e d o r c h r o m e d
E a r l y t y p e s a r e b r i g h t o r b l a c k .
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lnstalll
- upper spring seats, flanged side up.
lnstaLl va ve stem oil seal.
Protectivesleeves
must be used when instailing oilseal
To install valve, pl.ce valve in cylinder head and place
protecrive sleeve on stem. use tool 5219 to install oil
seal, note that tool should abut flange seal.
G5
lnstall:
inner and outer valve sp.ings
lmportantl Two types ol valves, upper spring seats and
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