Valmet 611 - Cylinder head construction

CYL lilDER
HEAD AND VALVE
TECH Nlsll
CYLINDER HEAD
10
to
Cyllnd,ar
head
4ll
l. Cy llnd€r
head
z.
v-f
tng
l. Injoc+f s leeve
4.
Cup
p
lug
5. Cup
plug
6. Va
lve
gu
lde
7.
Va lve seai
8.
Valve ssat
9. Thread
p
lug
10.
Valve
gear
cover
ll. Gaske+
12,
Nu+
15. Washer
14. Rubber
sea I
15. Breaiher
p
lpe
16.
C
lamp
17.
Ll{ilng lug
18. Scre{
19.
S+ud
20.
Seal r Ing
2l
.
Plug
22. Hose
connecfor
21.
Seal
rlng
24.
P
lu9
25.
Sfud
26.
Siud
27.
Cy I lnder
head
gaske+
28.
O-rl ng
29.
O-rlng
109,
,ll cnd 4ll €nglnes
have
a one-part,
cross-flor
cyllnder
head of casf lron }rhere
each
cyllnder
has
l+s ol'n
Inlei and exhausi
channel
on opposlte sldes
of
+he
head. The
rlgld cons+ructlon
and ihe
evenly spaced head
bol+s
con+r lbute +o
good
s€allng. The coolant
clrculatlon
is dlrected
In such a wav lh8i the
coollng
of the valve
seat area ls as efflclent
as
posslble.
6ll and 612
englnes have
iwo
separate
cyllnder
heads whlch are
+he same ln
baslc
consiruct
lon
as those of 3-cy I and 4-cy
I
englnes.
Än exiernal {ater-co I
lec+
| ng
plpo
jolns
+he
cyllnder
heads
io fhe ihermos+af
hous lng.
7ol
3-4