Table of Contents
Advertisement
pension of the
shoes,
the primary
shoe
is thus
pressed
upwards and the secondary
shoe
downwards until the
lower end moves towards t he anchor bolt, see Fig.
5-79.
Due to th
e fact
that th
e
turning
ce ntre
o
f
th
e se-
condary
shoe lies
in the an chor bolt and that of th
e
primary
shoe
in the adjusting device, the friction
be-
tween the drum and the
li
nings will assist in brake
app
li
cation. Also contributing to this is the retarding
effect on
the
secondary shoe because of the primary
shoe's endeavour to accompany the direction of rota-
tion of
the
drum.
Fig. 5-79.
Duo-servo princ ip le
REPAIR INSTRUCTIONS
ADJUSTING
TH
E
HANDB'
R AKE
The
handbrake
should give
full
effect
at
the third-
fourth notch.
If
it
does
not
do
so,
adjustment
should
be carried
out.
Here
the
wheel brake
units
are first
adjusted and, if necessary, the
cable.
l.
Apply the handbrake, remove lhe hub
caps
of the
rear wheels and loosen the wheel nuts.
2. Jack up the rear end, place blocks und
er
the rear
axle, remove the nuts
and
take off the wheels.
Release the handbrake.
3. Check that the brake
pads
are not
stuck
to the
brake disc. To prevent the
lever
when
adjusting
from
influencing
the
shoes
and thus give mi sled
-
ing
results, the spring tension acting on the
lever
should be reduced. This
can
be done by fitting
holder SVO
2742 (Fig.
S-82)
or by disconnecting
the cable from the lever.
4.
Set the drum so that its hole coincides with the
serrations on the adjusting screw and
apply
the
shoes by moving the screwdriver hand
le
upwards,
see Fig.
S-80.
When the drum can be rotated
easily, discontinue applying the shoes. Then
tum
the adjusting
screw
back
4-
S
serrations. Check
that shoes do not
"drag" by
rotating the drum
in its normal direction of rotation. Very little
dragging
may be
permitted.
If, however, the
dragging is more pronounced, the adjusting
screw
should be released a further 2-3
serrations.
Con-
5
:
34
nect the
cable
to the lever
and remove
1he holder
SVO 2742.
S. Repeat
the
ad
ju
sting procedure w
ith
the other
rear wheel.
6.
Apply the handbrake lever
and check
that full
braking
effect
is
obtained on the
3rd-4th
notch.
If
the
handbrake
can
be
app
li
ed
still further, the
Fig
.
5-80.
Adjusting the
handbrake,
rear
wheel
VOLVO
1032 13
Advertisement
Table of Contents
