Valmet 309 - Replacing Crankshaft Gears; Installing the Crankshaft

D.
REPI.AC
ING TTE CRANKSHAFT
Gf,ARS
Flx the extractor
(8360
973271 loio ihe ihread
holes
of +he
gear
drlvlng
+he
oll
pump
and
pull
+he
gears
oui.
Clean
+he llxlng
polnt
of +h6
gears
oo +he
crankshaft |,lth
a
*ire brush, for instance.
Heai the ne* gears
'.rp
io a 2O0oC
ienperature.
Place the
gears
on
ihe
crankshöf+
and
iap +he
hot
gears
dorn to ihe boliom using a brass
drlfi or a sultable sleeve. Check
thöl- the key
ls In
posl+lon
and tha+ +ho Insiallaiion
mark
of
the
fron+
gear
remalns
in
slghl-. Lei
ihe
gears
cool
natura
lly.
I
NSTAI.L
II{G
TI.IE CRANKSMFT
l. Clean the oll channels and the con+ac+ sur{aces
of +he bsarlng shells, cyllnder block and
bearlng
caps. Ensure lhat +he crankshal+ ls
cl
ean.
Fli +he bearlng shells lnto +he cyllnder block
and +he bearlng
caps. Ensure that
+he
bearlng
shell clamplng claws flt ln+o +helr noiches and
ihai the
shells io be fliied In
ihe
cyllnder
block
have a hols colncldlng t{lih the oli
port.
Lubrlca+e +he bearlng shells In the cyllnder
block
and the c.ankshaft
bearlng
journals.
Llfl'
ihe
crankshaft back
lnio
l+s
placa
and sllp the
thrusi bearlng shells
ot
the
cyllnder
block
ln+o thelr
posltlons.
Placo the thrus+ bearlngs
so
+hat
thelr lubrlcatlon
grooves
are
agalnst
fhe slldlnq
surface of ihe crankshaft.
Place
+he bearlng
c6ps
lnto +helr
posltlons
ln
the
crder lndlcatod
by the
numbors.
Place
+hrust
bearlngs shells
equlpped
{lth clamplng
claws
on +he slde
of
ihe andmost
beårlng
caP.
Lubrlcate
+he
lhreads of
the retalnlng
screws
llgh+ly wl+h
otl and
+lghten
+he screws
fo the
coirecl
torques
(200
t{m lll,
4ll, 6ll,
612
and 160 Nn J09).
Ensure ihö+ tho crankshaf+ rofates
easl
ly.
fGasure +he crankshaft end
play
t|lth
a dlal
Indlca+oi. Irench ihe
qankshafi
io one end
llml+
poslilon
and
-ihen
back +o
+he o+her and
note ihe dlal
Indlcator readlng for end
play.
Codpare
{lth the
roilng 0,10-O,r5
f,I||. lf
+he readlng
ls too
hlgh,
replace ihe thrus+
bearing
sholls wlth overslzed
onss.
lloigl
Never rean l-he bearlng shells or make
+he
bearlng
clearanca smaller by {lllng ths
edges of
'the
bearlng caps.
2.
E.