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.1.
I
© O©-O©
,
'
2'
,
.
3
4
5
6
'
Fig. 5·51.
Primary piston
l
,
Pisfon
4,
Washer
2.
Washer
S,
Pisfon sea
l
3,
Pisfon
sea
l
6.
Washe
r
VOLVO
103 179
5. Check
that the
hole
for the
stop screw is
clear
and
fit the
screw
(2,
Fig.
5-48)
with
a
new
sea
ling
washer. The
t
ightening torqu
e is
.5-.8
kgm
(3.6-
5.7
Ib.ft.).
6.
Check the movement of
th
e
pistons
a
nd make
sure
that the through -flow
holes are clear. The
eq ualiz
ing
hole
is checked
by pressing
the
pistons
in
abo
ut
1.0
mm
(.04/1
)
and
by
in
serting a soft
copper
wire diameter
.7
mm
(22 s.w.g.
)
down
through the hole
as shown
in
Fig.
5-53.
If th
e
equa liz
in
g
hole
is
not
clear,
the master
cylin
der
is genera
lly
wrongly
assemb led.
7. Fit the rubber sea ls (3 and
5,
Fig.
5-46).
Fit
the
brake
f
lui
d conta
in
er, see Fig.
5-45.
Fi
ll
the
con-
tainer w
ith
brake
f
lui
d and
vent the
cy lin-der.
Place plastic plugs
in
the
cy
lin der.
Check
to make
sure
that the
ventin
g
hol
e
in
the
cap
(l)
is
open
a
nd
fit the
strainer (2)
and cap
in
position.
FITTING
1. Place
the
sealing ring (6,
Fig
.
5-49)
on the master
cylinder. Fit the
cylind
er
in
position and
then th
e
Fig
.
5·52.
Fittin
g the
primary
piston
5:
22
VOLVO
103 193
VOLVO
103
194
Fig. 5·53. Checking the equalizing hole
l
. .77
mm
(22
s.w.g.
)
soft
wire
A=C learance
befween
washer and
sea
l
washers
toge
th
er
with the
attachin
g
nuts.
The
tightening
torque for
the nuts
is
1.2-1.5
kgm
(8.7-10.8
Ib.ft.).
2. Connect
up the lin
es,
see
Fig.
5-54.
Dep
re
ss
the
pedal
and
tighten the
nuts
for the
lin
es
when fluid
free
from
air forces
its
way out.
3.
Vent th
e
entire brake system.
Fig. 5-54. Master
cylinde
r
fitted
1.
Nuf
2.
Brake fluid
confainer
3.
Masfer
cy
l
i
nder
4. Brake
pipe,
primary
circuif
5.
Warning
valve
6. Elec. confacf
7. Brake
pipe,
secondary
circuif
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