NISSAN 300ZX 1984 Z31 Brake System User Guide

FRONT DISC BRAKE (CL28VA, CL28VB) - Rotor
Inspection
RUBBING SURFACE
Check rotor for roughness, cracks or chips.
RUNOUT
Make sure axle shaft has
no axial end play Then
check runout using
a dial guage.
SBR826
Rotor repair limit:
Maximum runout
(Total indicator reading at
center
of rotor pad contact surface)
Less than 0.07 mm (0 0028 in)
THICKNESS
SERE27
Rotor repair limit:
Minimum thickness
More than 20.0 mm (0.787 in)
BR-11

Pin bolt ' /rm 22.31 I2 2 -32.16 -231
=@ to sliding portion pin
Torque member fixing bo1
Torsue member 72 -97 I7 3 -99.53. Pin @ to sliding partm
Inner shim
22- 31 12 2.3 2.16-23)
Pad spring
Wear indicator
L.,
Outerrhim
Pd rnr,nn
Cam boot
Bleeder screw Adiurtinp cam
Piston assembly
Wave washer
N m Ikg m, 11-lbl P B C IPoly Butyl I Cuprysdl grease or silicone bared grease point =@ Rubber grease point
yPiston boot. @ f Always replace a1 each dirarremblv

REAR DISC BRAKE (CL14H, CL14HB) - Caliper
Pad Replacement
CAUTION:
When cylinder body IS open, do not depress brake
pedal, or piston will pop out.
1 Disconnect parking brake cable, then remove
pin bolts
2 Remove pad retainer, pads and shims.
SBR840
SBR640
3. When inaalllng pads, retract piston into cylin-
der body by turning
it clockwise
Be careful not to damage piston boot or get oil on
rotor.
Always replace shims when replacing pads.
SBR641
Removal and Installation
Disconnect parking brake cable and brake hose,
then remove caliper assembly
u SBRB41
BR-13

REAR DISC BRAKE (CL14H, CL14HB) - Caliper
1 Remove piston by turning it counterclockwise
with suitable long nose pliers.
SBR646
i--/
2 Pry off ring from piston and remove adjusting
nut
SBR648
3 Disassembly cylinder body
(1) Pry off ring A with suitable pliers, then remove
spring cover, spring and seat
SBR651
rnbly
(2) Pry off rmg B, then remove key plate, push rod
and rod
(3) Removepi Bn seal
Be careful not to damage cylinder body
4. Remove return spring and lever
SBR663
SBR656
SBR657
BR-I 4

REAR DISC BRAKE (CL14H, CL14HB) - Caliper
CAUTION:
Use brake fluid to clean Never use mineral oil
CYLINDER BODY
Check inside surface of cylinder for score, rust,
wear,
damage or presence of foreign materials
If any of the above conditions are observed,
replace cylinder body
Minor damage from
rust of foreign materials
may be eliminated by polishing surface with
a
fine emery paper Replace cylinder body if
necessary
TORQUE MEMBER
Check for wear, cracks or other damage Replace if
necessary
PISTON
Check piston for score, rust, wear, damage or
presence of foreign materials Replace
if any of the
above conditions are observed
CAUTION.
Piston sliding surface IS plated. Do not polish with
emery paper even
if rust or foreign matter is stuck
to sliding surface.
PIN AND PIN BOOT
Check for wear, cracksor other damage Replace if
any of the above conditions are observed
Assembly
Install cup securely in the specified direction
Adjust nu1
SBR849
Fit push rod into square hole in key plate Also
fit convex portion of key plate with concave
portion of cylinder
onvex portmn
v SBRB42
Install ring B with suitable tool
Rmg B
Key plate
Push rod
S0R843
Install seat, spring, spring cover and ring A with
suitable press and
drift.
Ring A-
Spring cover-
Seat-
BR-15

REAR DISC BRAKE - Rotor
Inspection
RUBBING SURFACE
Check rotor for roughness, cracks or chips Repair
or replace if necessary
RUNOUT
Make sure that axial end play IS within the specifi-
cations before measuring Refer to section
RA
Then check runout using a dial guage.
Rotor repair limit:
Maximum runout
(Total indicator reading at
center of rotor pad contact surface)
Less than 0.07 mm (0.0028 in)
THICKNESS
SBR847
Rotor repair limit:
Minimum thickness
More than 9.0 mm (0.354 in)
BR-16

PARKING BRAKE
Rear cable assembly [L H 1
(9) 3 1 -4 3 IO 32.0 44,2 3 - 3 21
[01 8-11 108-1 1.58-80)
Rear cable assembly [R H Front cable assembly-
(9116.21 116-2.1.12- ~16-21H6-21,12-151
[01 N m (kg-m, ft-lbl
Warning switch
SBR834
I'nspection
Removal
If necessary, separate front cable from parking
brake lever by breaking pin
Front cable, clevis pin and cotter pin are available
as service parts.
SBR835
1 Check control lever for wear or other damage
Replace if necessary.
2 Check wires for discontinuity or deterioration
Replace
if necessary
3 Check warning lamp and switch Replace if
necessary.
4. Check parts at each connecting portion and, if
found deformed or damaged, replace
BR-17

PARKING BRAKE
Adjustment
STROKE
0 Pull lever with specified amount of force
Check lever stroke and smooth operation
Number of notches 8 .9
Adjust lever stroke
SERB36
WARNING LAMP SWITCH
Bend parking brake warning lamp switch plate so
that brake warning light comes on when ratchet at
parking brake lever is pulled one notch and goes
out when fully released.
BR-18

SERVICE DATA AND SPECIFICATIONS (S. D. S.)
250 19 841
General Specifications
274 110 791
Front brake
Brake model
CL14H
Pad Width x thickness x
length mm lml
CL14HB
Rotor outer diameter
mm linl
Caliper inner diameter mm Iinl
Rear brake
Brake model
Pad Width x th$Ckness x
length mm (in)
Rotor outer diameter
mm lml ~
Callper cnner
diameter mm On1
Master
cylinder Inner diameter
mm (In1
Brake booster
Model
Dtaphragm dtameter
mm On1
Control valve
Model
Sprlt pomt
kPa Ikglcm', psi)
Reducing ratto
Recommended brake fluid
VG30E IVG3LT
CL28VA I CL28VB
Inner 43x llx 12651169~043~4981
3uter
43 x 11 x 129 0 I1 69 x 0 43 x 5 08)
40x80~ 75 I1 57 x0315x 295)
258 110 161 290 I1 1 421
42 8 I1 6851
2381 115/161
M20T
Primary 205 (8 071 Secondary 201 17 911
Proport,o"l"g YalYe
(within master cylinder)
3,432
3,923 140.5691
04
DOT 3
--Inspection and Adjustment-
BRAKE PEDAL -
Pedal ratio
Maximum stroke
mm Itnl
-
Free helght mm 18")
Depiessed height [Under force of
490
N 150 kg, 110 Ibl wlth engme
runn,ngl mm On)
Clearance between pedal stopper and
threaded end
of stop lamp swmh
mm (("1
Clearance between pedal stopper and
thredded end of AS
C D switch
mm Inn1 ~~~
~
Pedal free play mm lml
PARKING BRAKE
38
More than 134 15 281
M/T
182 1921717-7561
AIT
184 194 17 24 - 7 641
More than 90 13 541
03 1010012-00391
03-3810012 01501
Type Center lever type
Number of notches when warnmg lamp
sw8tch comes on 1
Number of notches [When pulled under
force of 196 N (20 kg, 44 lbll 8-9
-
CHECK VALVE
Maximum vacuum leakage
115 seconds after
66 ? kPa (500 mmHg,
19 69 mHg1
16 applied 1 1 3 (10. 0 39)
kPa ImmHg, mHg1
BRAKE BOOSTER
Maximum vacuum leakage
115 seconds after engme
IS ~toppedl 3 3 125.0 981 kPa ImmHg. inHgl
Input rod length mm Iml 140 15 511

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
I Front brake
-inspection and Adjustment
(Cont'd)
Rear brake
Pad repair limit
Minimum
thickness
mm lml
Brakemodel I CL28VA I CL28VB I CL14H I CL14HB
2 IO 081 2 IO 081
Mmmum
thcknerr More than
20 0 10 7871 mm (in)
Rotor repair limit I I
More than
9 0 (0 354)
Less than
0 07 IO 00281
Maximum
r"nO"1 Less than
0 07 10 00281 mm lid
Tightening Torque
Item Nm kg-m ft-lb
Brake pedal Pedal bracket to body
.Pedal bracket
to pedal
Stop lamp witch lock
nut
Brake booster
Brake booster to body
Input rod lack nut
Brake booster to
master cylinder
Three-way connector
Three-way connector
to brake tube
Three-way
connector mounting bolt
Brake hose connector
Brake tube flare nut
Wheel cylinder air bleeder
Front disc brake
Baffle plate
Torque member fixing
bolt
Torque member
to
cylinder body
8- 11
30.40 12 15
8-11
16
- 22
8-11
15 - 18
5-7
17 - 20
15 18
7-9
32-43 72.97
22-31
Disc rotor to wheel hub 49 69
Rear disc brake Baffle plate 8-11
Torque member fixing 72 - 97
bolt
Torque member to
22-31
cylinder body
Parkmg brake Center lever type
Control lwer to body 16.21 Adjuster lock nut 31-43
Front cable clamp to
body 8 - 11
08 11
31-41 12-15
08-1 1
16-22
08 11
15-18
05-07
17 20
15 18
07-09
58-80
22
- 30
9-11
58-80 12 16
58-80
11 13
36-51
12.14
11
- 13
51-65
033-044 24-32
73-99 53-72
22-32 16-23
50 70 36-51
08-11 58 80
73-99 53 72
22-32 16-23
16-21 12-15
032-044 23-32
08-11 58-80