Datsun 1000 User Manual

3
Brakes
Adjust
the brake
pedal
height
See rel
vant
section for
adjusting
procedure
Check the
master
cylinder
for fluid leaks
TO DISMANTLE
I
Remove the
reservoir
cap
and seal
and drain
the
fluid from
the
cylinder
reservoir
2 Pull back the dust boot from the rear end of
the
cylinder
and with
a suitable
pair
of
snap
ring
pliers
remove
the
snap
ring
3
From the rear
end
of the
cylinder
withdraw
the
push
rod
assembly
with dust boot
piston primary cup
return
spring
check valve and
check valve seat in
that
order
4
Remove the
secondary cup
from the
piston
being
careful not to SCore
the
piston
5
Loosen the
reservoir
to cylinder retaining
clip
and
detach the
reservoir
TO
CLEAN
AND
INSPECT
I
Wash
all
component parts
thoroughly
in clean
brake fluid or alcohol
2 Check the master
cylinder
bore
for excessive wear
scoring
or
pitting
3
Inspect
the
piston
for
pilling
excessive
wear
or
scoring
4 Check the
piston
to
cylinder
clearance and
renew
the
piston
and or
cylinder
if the clearance
is in excess
of
that
specified
see
SPECIFICATION section
for
piston
clearance
limit
5
Check the
lips
on the
primary
and
secondary
cups
for wear
and the check valve
rubber fnr
swelling
perforation
or distortion
6 Check the
piston compression spring
for weakness
or
rusting
7
Renew all
oomponen
ts
of
the
cylinder
assembly
that
upon
checking prove
to
be
unserviceable
NOTE
It is
always
advisable tu
instal
new
UPS
check valve
and dust
boot
to a
master
cylinder that
has been
dismantled
This
l
ill ensure
a
thorough
overhaul
and
long
service
from
the unit
TO ASSEMBLE
I
Soak all
internal
components
of the
cylinder
in
c1ean
hydraulic
brake
fluid before
assembling
2
Carefully
instal the
secondary
cup
to its recess
in
the
piston
Ensure
that the
leading lip
of the
cup
is
facing
to
the
front of
the
piston
3 Instal
the check
valve
seat check
valve
spring
primary
cup
and
piston
in
that
order into
the
rear
end
of
the
cylinder
Ensure that the
leading lip
of the
primary cup
is
facing
towards the
front of
the
cylinder
4 Fit
the
push
rod
assembly
to the rear of
thc
cylinder
and instal the
snap ring
5 Instal the
dust
boot
to
the rear
of
the
cylinder
making
sure
that
the
dust boot
is
positioned
correctly
over
its
retaining lip
on the
cylinder body
6
Attach
the reservoir to the
cylinder
and fit
and
securely lighten
the reservoir
retaining dip
7
Fill the reservoir
with clean
hydraulic
brake fluid
8 Fit the reservoir
cap
and
seal and bleed the
cylinder by
hand
by slowly pumping
the
piston
via
the
push
rod at the rear of
the
cylinder
until all
trapped
air is
expelled
from
the
cylinder
eN
AND SEAL
V
C
p
RESERVOIR
SECONDARY
CUP
rs PIN
PRIMARY
CUP
CHECK
VALVE SEAT
A
f
0
1
BOOT
1
cUP
J
il
ll Q
1
ON
I
CHECK VALVE
cyLINDER
BODY
SPRING PIN PUSH
ROO
ASSV RETURN
SPRING
Dismantled
View
of
Single
Circuit
Type
Master
Cylinder
J nu u IR UIT M ST II
UND
The
dual circuit
type
master
cylinder
assembly
was
introduced as
a
safety
factor
on later
type
vehicles
and can
be of
either
Nabco
or
Tokico
manufacture
The front and rear
brakes are
applied
by
independant
circuits If
a
malfunction
occurs in one circuit
the
remaining
circuit is
capable
of
stopping
the
vehicle
safely
A brake
line
pressure
differential
warning light
switch
if corporated
within the
system
allows
a
bulb
to
glow
on
the dash
panel
when
a malfunction occurs
within the
system
The switch
is actuated
by
a
shuttle
valve when a
pressure
difference of lH
hu 3
and
17
kg 185
and 242
psi
is encountered between the two
hydraulic
circuits
NOTE The complete
switch assembly should be
renewed
if
it is
found
to be unserviceable Under
no circumstances
should an
attempt
be made
to
repair
the
switch
132
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Datsun 1000 Specifications

General

Brand	Datsun
Model	1000
Category	Automobile
Language	English