Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 300ZX 1984-1985,1988,1990,1994-1996 Approved 1984 Brakes
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BRAKE SYSTEM
7
I
-
P
SECTION BR
CONTENTS
BRAKE HYDRAULIC LINE .. . . .. .. BR- 2
BRAKE P E D A L . . . . . . BR- 4
MASTER CYLINDER . BR- 6
BRAKE BOOSTER BR- 7
FRONT DISC BRAKE (CL28VA, CL28VB) - Caliper BR- 9
FRONT DISC BRAKE (CL28VA, CL28VB) - Rotor .. . BR-11
REAR DISC BRAKE (CL14H, CL14HB) - Callper . . BR-12
REAR DISC BRAKE - Rotor .. BR-16
PARKING BRAKE . .. . BR-17
SERVICE DATA AND SPECIFICATIONS 6 D.S) . BR-19
SPECIAL SERVICE TOOL .. . .. BR-21
BRAKE HYDRAULIC LINE
rn Recommended fluid is brake fluid "DOT 3".
Do not reuse drained brake fluid
Be careful not to splash brake fluid on painted areas
7Front brake lCL28VA. CL28VB) Rear brake lCL14H. CL14HB)
\ rFlare nut 7
0
@@.A 7 15-18 I1 5 -18.11.131
Three-way connector
I1 5 . 1 8 11 - 11
, 3
Flare nut
15-18I1 5 -18.11 -13)
\Flare nut
015.18 I1 5.18.11.13) - Primary llne
Secondary lone
WARNING
Clean pad and shoe dust using a dust collector after
cleaning with waste cloth N m lkg-m,ft Ibl
SBR821
Bleeding Procedure
Precautions
Carefully monitor brake fluid level at master
cylinder during bleeding operation.
Bleed air according t o the following pro-
cedure
Left rear caliper @ -t Right rear caliper @
-t Right front caliper @ Left front caliper
-f
Connect a transparent vinyl tube to air bleeder
valve of caliper.
U
SBRSOS
BR-2
BRAKE HYDRAULIC LINE
Removal and Installation - Inspection
CAUTION Check brake lines (tubes and hoses) for evidence of
a. When removing and installing brake tube, use cracks, deterioration or other damage Replace any
Tool. damaged parts.
If leakage occurs around joints, retighten or, if
necessary, replace damaged parts.
b Cover openings t o prevent entrance of dirt
whenever disconnecting hydraulic line.
To remove brake hose, first remove flare nut
securing brake tube to hose, then withdraw
lock spring. Next disconnect the other side
All hoses must be free from excessive bending,
twisting and pulling
Whenever installing brake lines, be sure t o
check for oil leakage by fully depressing brake
pedal
BR-3
BRAKE PEDAL
Input rod lock nut
3 0 - 4 0 I3 1 . 4 1 , Z Z - 30)
Pedal bracket
Stop lamp switch
I1 2 . 1 5 , 9 - 111
N rn lkg-m, ft-lb)
SBR822
Inspection
Check brake pedal for the following items,
servicing as necessary.
Brake pedal bend
Clevis pin deformation
Crack for any welded portion
BR-4
BRAKEPEDAL
Adjustment
Check brake pedal free height from melt sheet (4) Check brake pedal depressed height with
Adjust if necessary engine running.
If depressed height is below the specified
value, check brake system for leaks, accumula-
tion of air or any damage regarding component
parts (master cylinder, wheel cylinder, etc.),
and make the necessary repairs.
I1 2 . 1 5 . 9 - 111
AS CD switch
I /-k -
I1 2 1 5,9.111
Dash insulator sheet
N m 1kg-m. ft-lbl
SERE38
H: Free height
M/T I82 - 192 mm (7.17 - 7 56 in)
A/T 184 - 194 mm (7.24 - 7 64 in)
D: Depressed height
M/T More than 90 mm (3.54 in)
A/T More than 90 mm (3.54 in)
Under force of 490 N (50 kg. 110 Ib) with
engine running.
C, : Clearance between pedal stopper and threaded
end of stop lamp switch.
0.3 - 1.0 mm (0.012 0.039 in)
~
Cz : Clearance between pedal stopper and threaded
end of A.S.C.D. switch.
-
0.3 - 1.0 mm (0.012 0.039 in)
A: Pedal free play
-
0.3 - 3 8 mm ( 0 012 0.150 in)
(1) Adjust pedal free height with brake booster
input rod. Then tighten lock nut.
(2) Adjust clearance "C1" and "C2" with stop
lamp switch and A.S.C D switch respectively.
Then tighten lock nuts.
(3) Check pedal free play.
Make sure that stop lamp is off when pedal is
released.
BR-5
I
I
\
t13aNllA3 t131SVW
BRAKE BOOSTER
Operating Check --Removal and Installation
Depress brake pedal several times with engine (9116-22
off, then check that there is not change in (1 6 - 2 2.12.16
pedal stroke
Depress brake pedal, then start engine. I f pedal
goes down slightly, operation i s normal
Airtight Check
Start engine, then stop it in one or two minutes.
(91 8 . 11 (0 8 . 1.1,5.8.8.01 1
Depress brake pedal several times slowly. If - -
8 11 (0 8 1 1,5.8.8.01
pedal goes further down the first time, but
(c1 N rn (kg-m, ft-lbl
SBR831
gradually rises after second or third time, the
booster is airtight.
Depress brake pedal while engine is running,
then stop it with pedal depressed. I f there is
no change in pedal stroke after holding pedal
for thirty seconds, brake booster is airtight
BR-7
BRAKE BOOSTER
Inspection Adjustment
HOSES AND CONNECTORS INPUT ROD LENGTH
0 Check condition of vacuum hoses and con- Adjust length by turning Clevis.
nections. Length "B":
0 Check vacuum hoses and check valve for air 140 m m (5.51 in1
tightness
68R832
CHECK VALVE
0 When pressure is applied t o the brake booster
side of check valve and valve does not open,
replace check valve with a new one.
Manlfold %de Brake booster ride
S8R846
OUTPUT ROD LENGTH
PV servo cannot be adjusted as output rod thread
portion is secured by adhesive
BR-8
FRONT DISC BRAKE (CL28VA, CL28VB) - Caliper
Toraue member fixing bolt- rWear indicator
[9) 72 - 97 (7 3 . 9 9,53.721
\ / / /rlnner~hm
Sub p ~ =@
n to rildlng portion
Rubber bushing
Retainer bushing
Pin b o o t 1 h e t a m e r boot
=@ PBc I P O I ~~ u t yCupryrill grease or
l
rhcone-based grease Pomt
=@ Rubber grease point (c1 N m Ikg-rn. ft-lbl
I Always replace when disassembled SEI3824
CAUTION: 2. Open cylinder body upward. Then remove pad
When cylinder body IS open, do not depress brake retainer, and Inner and outer shims
pedal, or piston w ~ lpop out.
l
1. Remove pin bolt.
SBR825
Be careful not to damage piston boot or get oil on
S B R ~ rotor. Always replace shims in replacing pads.
FRONT DISC BRAKE (CL28VA, CL28VB) - Caliper
Removal and Installation Inspection
Remove torque member fixing bolts and brake CAUTION:
hose connector Use brake fluid to clean. Never use mineral oil
CYLINDER BODY
a 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.
a Minor damage from rust of foreign materials
may be eliminated by polishing surface with a
fine emery paper. Replace cylinder body if
necessary.
SBR839 PISTON
Check piston for score, rust, wear, damage or
Disassembly presence of foreign materials. Replace if any of
the above conditions are observed.
Push out piston with dust seal using compressed
CAUTl ON :
air
Piston sliding surface S plated. Do not polish with
I
emery paper even if rust or foreign materials IS
stuck to sliding surface.
PIN, PIN BOLT, RETAINER BOOT, RUBBER
BUSHING, RETAINER BUSHING, AND
PIN BOOT
Check for wear, cracks or other damage. Replace
if any of the above conditions are observed
SER772
0 With dust seal fitted t o piston, insert dust seal
into groove on cylinder body and install piston.
0 Properly secure dust seal.
a Pay attention to piston seal direction.
y000t n
Plrron seal
PlStO"
U L d U
LCvlinder body SBR574
BR-10
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
=@ to sliding portion pin
Torque member fixing bo1
72 - 9 7 I7 3 - 9 9 . 5 3 . Pin @ to sliding p a r t m
Torsue member
Inner shim
' /rm Pin bolt
22.31 I2 2 - 3 2 . 1 6 -231
2 2 - 31 12 2 . 3 2 . 1 6 - 2 3 )
Pad spring
Outerrhim Wear indicator
L,
. Cam boot
Bleeder screw
Adiurtinp cam
P d rnr,nn
Piston assembly
Wave washer
N m Ikg m, 11-lbl
P B C IPoly ButylI 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
SBR641
Removal and Installation
SBR840
Disconnect parking brake cable and brake hose,
then remove caliper assembly
2 Remove pad retainer, pads and shims.
u SBRB41
SBR640
3. When inaalllng pads, retract piston into cylin-
der body by turning it clockwise
Be careful not t o damage piston boot or get oil on
rotor.
Always replace shims when replacing pads.
BR-13
REAR DISC BRAKE (CL14H, CL14HB) - Caliper
rnbly
1 Remove piston by turning it counterclockwise (2) Pry off rmg B, then remove key plate, push rod
with suitable long nose pliers. and rod
i--/
SBR646 SBR663
2 Pry off ring from piston and remove adjusting (3) Removepi B seal
n
nut Be careful not to damage cylinder body
SBR648 SBR656
3 Disassembly cylinder body
4. Remove return spring and lever
(1) Pry off ring A with suitable pliers, then remove
spring cover, spring and seat
SBR657
SBR651
BR-I4
REAR DISC BRAKE (CL14H, CL14HB) - Caliper
CAUTION: Fit push rod into square hole in key plate Also
Use brake fluid to clean Never use mineral oil fit convex portion of key plate with concave
portion of cylinder
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
onvex portmn
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 v
SBRB42
Check for wear, cracks or other damage Replace if
necessary Install ring B with suitable tool
PISTON Rmg B
Check piston for score, rust, wear, damage or
Key plate
presence o f foreign materials Replace if any of the
above conditions are observed
CAUTION.
Push rod
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
S0R843
Check for wear, cracksor other damage Replace if
any of the above conditions are observed Install seat, spring, spring cover and ring A with
suitable press and drift.
Assembly
Install cup securely in the specified direction
Ring A
-
Spring c v r
o e-
Seat-
Adjust nu1
SBR849
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 - 43 IO 3 2 . 0 44,2 3 - 3 21
[01 8-111 0 8 - 1 1.58-80)
Rear cable assembly [ R H Front cable assembly-
(9116.21 116-2.1.12- ~16-21H6-21,12-151
Warning switch
[01 N m (kg-m, ft-lbl
SBR834
Removal
I'
If necessary, separate front cable from parking 1 Check control lever for wear or other damage
brake lever by breaking pin Replace if necessary.
Front cable, clevis pin and cotter pin are available 2 Check wires for discontinuity or deterioration
as service parts. Replace if necessary
3 Check warning lamp and switch Replace if
necessary.
4. Check parts a t each connecting portion and, if
found deformed or damaged, replace
\
SBR835
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
SERB36
Adjust lever stroke
WARNING LAMP SWITCH
Bend parking brake warning lamp switch plate so
that brake warning light comes o n 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.)
General Specifications --Inspection and Adjustment-
VG30E IVG3LT - PEDAL
BRAKE
Pedal ratio 38
-
Maximum stroke mm Itnl More than 134 15 281
Front brake
Brake model CL28VA
Inner
I CL28VB
Free helght mm 18")
M/T
182 1 9 2 1 7 1 7 - 7 5 6 1
AIT
Pad 184 194 17 24 - 7 641
43x l l x 1 2 6 5 1 1 6 9 ~ 0 4 3 ~ 4 9 8 1
Width x thickness x
3uter
length mm lml Depiessed height [Under force of
43 x 11 x 129 0 I 1 69 x 0 43 x 5 08)
490 N 150 kg, 110 Ibl wlth engme More than 90 13 541
Rotor outer diameter runn,ngl mm On)
250 19 841 274 110 791
mm linl
Clearance between pedal stopper and
threaded end of stop lamp s w m h
Caliper inner diameter
mm Iinl mm (("1
0 3 1010012-00391
Rear brake Clearance between pedal stopper and
CL14HB thredded end of A S C D switch
Brake model CL14H
mm Inn1
~~~ ~
Pad
Width x th$Cknessx Pedal free play mm lml 0 3 - 3 8 1 0 0 1 2 01501
4 0 x 8 0 75 I1 57 x 0 3 1 5 x 2 9 5 )
~
length mm (in)
Rotor outer diameter
258 110 161 290 I1 1 421
mm l m l PARKING BRAKE
~
Callper cnner
42 8 I 1 6851 Type Center lever type
diameter mm On1
Number of notches when warnmg lamp
Master cylinder 1
sw8tch comes on
Inner diameter
2 3 8 1 115/161
mm (In1 Number of notches [When pulled under
8-9
Brake booster
Model M20T
-
force of 196 N (20kg, 44 lbll
Dtaphragm dtameter Primary 205 (8 071
mm On1 Secondary 201 17 911 CHECK VALVE
Control valve
Maximum vacuum leakage
Proport,o"l"g YalYe 115 seconds after 66 ? kPa (500mmHg,
Model
(within master cylinder) 1 3 (10. 0 39)
19 69 mHg1 16 applied 1
kPa ImmHg, mHg1
3,432
Sprlt pomt
kPa Ikglcm', psi) 3,923 140.5691
Reducing ratto 04
BRAKE BOOSTER
Recommended brake fluid DOT 3
Maximum vacuum leakage
115 seconds after engme I S ~ t o p p e d l 3 3 125.0 981
kPa ImmHg. inHgl
Input rod length mm Iml 140 1 511
5
SERVICE DATA AND SPECIFICATIONS (S.D.S.)
-inspection and Adjustment Tightening Torque
(Cont'd)
Item N m kg-m ft-lb
Brake pedal
I Front brake Rear brake Pedal bracket t o body 8 - 11 08 11 58-80
.Pedal bracket to pedal 30.40 31-41 22 - 30
Brakemodel I CL28VA I CL28VB I CL14H I CL14HB Stop lamp w i t c h lock 12 15 12-15 9-11
nut
Pad repair limit
Minimum Brake booster
thickness 2 I O 081 2 I O 081 Brake booster t o body 8-11 08-11 58-80
mm lml Input rod lack nut 16 - 22 16-22 12 16
Brake booster to 8-11 08 11 58-80
Rotor repair limit I I master cylinder
Maximum
Less than Less than Three-way connector
r"nO"1
0 07 10 00281 0 07 I O 00281 Three-way connector 15 - 18 15-18 11 13
mm l i d
to brake tube
Three-way connector 5-7 05-07 36-51
Mmmum
More than More than mounting bolt
thcknerr
20 0 1 7871
0 9 0 (0354)
mm (in) Brake hose connector 17 - 20 1 7 20 12.14
Brake tube flare n u t 15 18 15 1 8 11 - 13
Wheel cylinder air bleeder 7-9 07-09 51-65
Front disc brake
Baffle plate 32-43 033-044 24-32
Torque member fixing 72.97 73-99 53-72
bolt
Torque member to 22-31 22-32 16-23
cylinder body
Disc rotor to wheel hub 49 69 50 70 36-51
Rear disc brake
Baffle plate 8-11 08-11 58 80
Torque member fixing 72 - 97 73-99 53 72
bolt
Torque member t o 22-31 22-32 16-23
cylinder body
Parkmg brake
Center lever type
Control lwer t o body 16.21 16-21 12-15
Adjuster lock nut 31-43 032-044 23-32
Front cable clamp t o 8 - 11 08-11 58-80
body
SPEIAL SERVICE TOOL
* Special tool or a commercial equivalent
I
Tool number
Tool name
(Kent-Moore No )
GG94310000" Flare nut torque wrench
( - )
BR-21
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