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SVO 2814
Fig. 2-30.
Removing
the
polygon
hub
REPlACING THE Oll SEAl IN TIMING
GEAR CASING
VOLVO
l
OJ 279
1.
Empty
the
co'o
lant
from
the
system and
remove
~he
radiart.orand
.radi.ator
grill.
2.
R ~l
ea'se
the fan belt. Unscrew
th
e
bolts for the
pul'ley
and
the
flywheel
dampe'
r and rem ove
,
t he
bolts.
3.
Remove
the centre
bolt
and
tak
e off
the polygon
hub with plJlUer SVO 2814,
see
Fig. 4-30. (First
·
c heck
to
see
whether it is possible
TO
puH off the poly-
glon
hub
by hand.)
4. Remove the oi,1 seal. Lubricote ;the
sealvng
Hp on
the new seal and fit the
seal
with drift SVO 2816,
see liig. 2-31.
N.B. Filrst inspect the wear
slJ'r~ace
of the polygon
hub. The o:i·1 seal can be fitted in three positions
with 1.001 SVO 2816. With a new polygon hub,
the centre bolt of the tool shoU'ld be screwed in
fully, see Fig. 2-32. In this position, the seal will
Fig. 2-31.
Fitting the oiJ
sea
I
2:
16
Fig. 2-32.
Centre spindle position on SVO 2816
be f
Med in its
outer position
(position
1).
Wi.
t h
a
wear
ma,rk on the
polygon hub,
fit
the
seal
in
position
2
.(11;4
turns of centre
ho
lt
screwed out).
With
two
wear
marks on
the
hub,
fit
the
sea
lin
g
in
posil
f i.on 3 (centre bolt
screwed
ou·
t fuHy ). With
tf'rree
wear
marks, the
polygon
hub
should
be
rep laced with
a
new ·one.
5. Fit
the
polygon
hub with tool
SVO
2815,
see
Fig.
2-33. Before f itt
in
g,
t
he
slidin
g su,rfaces of the
polygon
hub should
be greased.
Note the mark·
ing,
that
is, the
centre punch
marks
on
t he crank-
shaft end and polygon
hub.
Fit
the
centre bolt
and
t,ighten
,it
to
a
I
t orque
of
7-
8
kgm (50-57
Ib.ft.).
6.
Fit
,
t he f1ywheel
damper
and pulley.
Since the
bolt holes are not
locot,
e d symmetrkally, fitting
can on'ly be done in one ,position.
7. Fit the fan beH. This shou·ld be tensioned
so
that
the
~ri'Gtion
d'orque
of the fan pulleyin the dkec-
tion is 1.2-1.7 kgm (8.7-12.3 IbJt.). Use a torque
wrench with suitable g'raduation on the
olterna.
t or
pulley nut.
Fi,
t the radiator.
Fig.
2-33.
Fitting the polygon hub
VOLVO
103276
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