Mazda RX-7 - Machining Operations

CHASSIS/BRAKE
SYSTEM
5.
Friction
Pad,
SS-100:4352
33
625
SS'123:
4352
33
725
The
SS-100
is a
harder
comPound
for
endurance
racing;
the
SS'123
is
intended
for
sPrint
races'
C.
Rear
brakes.
1.
Rotor,435226251
This
is a
solid
rotor,
with
an
outer
diameter
of
254
mm
(10 in), and
is
10
mm
thick.
2.
CaliPer,
R:
4352
26
980
L:
4352
26 990
These
are
sliding
pin
type
calipers
and
include
Provision
for
a
Park'
ing
brake'
TheY
attach
to
th.e
axle
housing
with
a
mounting
adaPl^oi'
and
the
cylinder
diameter
is 1'3/8"'
3.
Mounting
adaPtor'
R:4352
26921
L:
4352
26
931
These
adaptors
are
required
to
mount
the
rear brake
assemblies
to
the
axle
housing.
4.
Rear
dust
Plate'
R:4352
26260
L:4352
2627O
5.
Friction
Pad,
SS'100;
inner:
4352
49 625
outer:435249725
ss-123;
inner:435226625
outer:435226725
As
with
the
front
Pads,
the
SS'100
is for
endurance
races;
the
SS-123
is
for
sprint
races.
6.
Variable
ProPortioning
valve,
3863
43 900
This
valve
will
limit
the
line
pres'
sure
to
the
rear
brakes.
The
varia'
ble
range
is 30'100
kg/cm''
With
each
clockwise
turn
of the
adjust-
ment,
the
line
Pressure
will
in'
crease
bY
10
kg/cm'.
7.
Variable
proportioning
valve
hold'
er,8871
43
750
Use
the
strut
tightening
nut
to
at'
tach
this
holder
to
the
struGture
of
the
car.
ll.
Machining
OPerations.
A.
Changing
the
position
of
the
clurch
master
cYlinder-
Due
to
the
larger
Power
assist
vac'
uum
diaPhragm,
the
clutch
master
cylinder
must
be
moved
to
the
left'
1.
The
Procedure
for
moving
the
clutch
master
cYlinder
is as
fol'
lows:
(1)
As
shown
in the
illustration
below'
locate
and
mark
the
new
mounting
holes
on
the
firewall,
25
mm
to
the
left
of
the
standard
ones'
Block
off
the
original
holes
with
a
suitable
steel
Plate.
Cut
and
drill
the
new
holes.
After
comPleting
the
installa'
tion,
cover
and
seal
anY
holes
that
would
allow
water
into
the
interior
of
the
car.
(2)
(3)
(4)
Power
assist \
"nf
o\-/O
rl
o
o10
j-e
9?
i;4
-l
\
L
t
{-
I
/
I
I
I
I
\
32,1'
100
q,
o
o
o
o
o
o
t
o
30
I
lz
-+'
2.
Modification
to
clutch
pedal
push'
rod.
With
the
change
of
the
master
cylinder's
location
in the
preced-
ing
operation,
the
push.rod's
p,osi'
tidn
irvitt
have
to
be
changed
as
shown
in the
illustration.
30
Input
oil
Pressure
100