Datsun 610 Series 1973 Service Manual page 150

BRAKE
1 Brake disc
2 Return
spring
3 Brake shoe
assembly
Removal
1
Jack
up
front of
car
just high
enough to
remove
tire brake drum
and hub
If brake drum
is
hard
to
remove
screw
in
bolt
8
mm
dia
meter
1 25
mm
pitch
to drive drum
out
B l267
Fig
BR 26
Removing
brake drum
2
Remove return
springs and brake
shoes
3
Disconnect brake tube and
bridge
tube
4 Remove cylinder
mounting bolts
and detach fore and aft wheel
cyl
inders
lIIflI
BA266
4 Wheel cylinder
fore
5
Wheel cylinder aft
6 Bleeder
Fig BR
25
Front drum brake
2
I
8
1 Brake tube
B
242
2
Wheel
cylinder attaching
bolts
3
Bridge
tube
Fig
BR 27 Remove wheel cylinders
5 Remove four bolts
securing
brake
disc
in place
and detach brake disc
Disassembly
of wheel
cylinder
CID
1
re
1 Dust
cover
2 Piston
3 Piston cup
4 Spring retainer
Fig BR 28
5 Spring
6 Cylinder
7 Bleeder
8 Bleed
cap
Wheel
cylinder
SR
Remove dust cover
Apply air
through
oil hole and parts will be
disassembled in the order enumerated
in
Figure
BR 28
Notes
a
As the
fore cylinder
is
equipped
with
an
air
bleeder the bottom
cOnIJguration
of air bleeder
mount
ing
screw
hole lends difference in
shape
between
fore and aft
cylinders
Care
should be taken
not
to
confuse the
one
with another
b Exercise
care
in
disassembling
these
parts
not to
damage cylinder
piston
and
piston
cup
c
Apply
a
coating
of brake fluid
to
piston
cup at
assembly
Inspection
Brake drum
1
Replace
brake
drum
whose
dia
meter is
beyond
the limit
of
1 4
mm
0 0551 in with
respect
to the
standard inner diameter
of 228 6
mm
9 in
2
The allowable
maximum out
of
round
of brake drum
is
0 02
mm
0 0008 in
Re condition
or
replace
brake drum
if
specified
limit
is
exceeded
3
Measure
for tapered brake drum
If specified limit of 0
02
mm
0
0008
in is exceeded
as
measured
at
a
position
where the distance of 40
mm
1 5 75
in is kept
away
from inlet
re
condition
or
replace
brake drum
4 Contact surface with which
linings
come
into contact
should be
finished
to
such
an
extend that
it is
ground by
a
No 120 to 150
sandpaper
5
Using
a
drum
racer
fmish brake
drum
by machining
if
it
shows
any
sign of
score
marks
partial
wear or
stepped
wear on
its contact
surface
Note
After brake drum is
completely
re conditioned
or
renewed
check
drum and
shoes
for proper
contact
pattern