Valmet 309 - Flywheel; A. REPLACING THE FLYWHEEL STARTER RIM; B. FITTING THE FLYWHEEL

4.
FLYHHEEL
REPLAC
I
NG TI{E
FLYTI€EL STARTER R
I
I,t
lf
the sfar+er rlm
ls worn, replace l+.
The
s+arier
rlm
cannot be +urngd around because
lts
+eeih
have been chamfered
and +empered on ihe
slde
of
+he s+arlor.
Remove +he
old s+arior rlm by tapplng l+ a+
varlous
polnfs
wlth a drlft.
Clean
lhe flywheel
confaqt face
vrl+h a wlre brush.
B.
433
2. Heat fhe slarter
rlm evenly +o a
iomperalure
of
150
-
200uC.
Fl+ the rlm In
posltlon
on
ihe
flyvlheel so
+hat ihe
chamfer
of
ihe openlng ls
towards the flv*heel and
+he chönfe.ed side
ot
ihe
teeth
iovrards the s-tarter.
f.
Lef
ihe
siarter
rlm cool
dorn na+urallv.
F ITTII{G T}€ FLYXHEEL
Clean
+he maflng faces on
ihe crankshafl
rear
f lange
and
f
lywhee
|
.
Flx +he
flvwheel on the crankshaf+
end. Foi
guldlng you
can uso lV l2 siuds
(2
pcs) whlch
sult
the flywheel retalnlng
screr
holes.
The
poslilon
of ihe flyrheel ls
{ree ln englnes
where ihe
lnjecilon ilmlng
ls marked on
the
crankshaf+ fron+ end. In
sone englne
vorslons
one of +he relalnlng
screws have
been replaced
by a
gulde pln
i'o deiermlne
ihe crankshaf+
posli
lon.
Tlgh+en the
llyvlheel re+alnlng screris
evenly
In
phases
io ihe torque of 120 Nm.
4
-'18