Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 300ZX 1984-1985,1988,1990,1994-1996 Approved 1988 Brakes
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BRAKE-SY STEN
SECTION BR
CONTENTS
BRAKE HYDRAULIC LINE ................................................ BR- 2
BRAKE PEDAL .......................................................... BR- 4
MASTER CYLINDER ....................................... . . . . . . . . . . . . . . . B R. 6
BRAKE BOOSTER ......................................................... BR- 7
FRONT DISC BRAKE (CL28VE, CL2BVB) -
Caliper ........................... BR- 9
.
FRONT DISC BRAKE (CL2BVE CL28VB) - Rotor ........................... BR-12
REAR DISC BRAKE (CL14HVB) Caliper- ................................... BR-13
REAR DISC BRAKE - Rotor .............................................. BR-17
PARKING BRAKE ........................................................ BR-18
SERVICE DATA AND SPECIFICATIONS (S.D.S.). .............................. BR-20
SPECIAL SERVICE TOOL .................................................. BR-22
BRAKE HYDRAULIC LINE
Recommended fluid is brake fluid "DOT 3".
Do not reuse drained brake fluid.
0 Be careful not to splash brake fluid on painted areas. Brake hose connector
\
Front brake (CL28VE. CL2aVB)
(ol 1 7 - 2 0
-
(1.7 2.0. 12.14)
Rear brake KL14HVE) 7 /
7
m 15. 18 11.5. 1.8. 11 .13)
Brake how eonnsctor
Front Three-wav connector
(1.5. 1.8, 11. 13)
-
5 7 (0.5 .0.7,3.6 .5.1 I
Flare nut
15-18(1.5-1.8.11 -13)
Brake hoY) connector
m17-20 ([1 15. 18 (1.5. 1.8. 11. 13) (ql17-20
11.7-2.0.12-14) 11.7-2.0.12-14)
-
WARNING:
Clean pad and shoe dust using a dust collector after
cleaning with waste cloth.
Primary line
secondaryline m: Nm lkgm. ft-lb)
S6R821
Bleeding Procedure
PRECAUTIONS
Carefully monitor brake fluid level at master
cylinder during bleeding operation.
0 Bleed air according to the following pro-
cedure:
Left rear caliper @ + Right rear caliper @
+ Right front caliper @ + Left front caliper
@
Connect a transparent vinyl tube t o air bleeder
valve of caliper.
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 connectors re-tighten 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 to
check for oil leakage by fully depressing brake
pedal.
BR-3
BRAKE PEDAL
Clevis pin
'<
Fulcrum b o l t 1
I
[91: N m (kern. ft-lbl
SERB22
Inspection
Check brake pedal for the following items.
Brake pedal bend
Clevis pin deformation
Crack of any welded portion
BR-4
BRAKEPEDAL
Adjustment
Check brake pedal free height from melt sheet. (1) Adjust pedal free height with brake booster
Adjust if necessary. input rod. Then tighten lock nut.
*
Input rod Be sure that tip of input rod stays inside.
-It- Stays inside
Input rod-/
Lock nut
SBR930
(2) Adjust clearance "C1" and "CZ" with stop
lamp switch and A.S.C.D. switch respectively.
Then tighten lock nuts.
(3) Check pedal free play.
(01 : N.rn Ikg-m,ft-lbl Make sure that stop lamp is off when pedal is
SBR838
released.
H: Free height (4) Check brake pedal depressed height with
MTr 182 - 192 mm (7.17 - 7.56 in) engine running.
ATr 184 - 194 mm (7.24 7.64 in)
~
If depressed height is below the specified
D: Depressed height value, check brake system for leaks, accumula-
M/T 90 mm (3.54 in) or more tion of air or any damage regarding component
A/T 90 mm (3.54 in) or more parts (master cylinder, wheel cylinder, etc.),
Under force of 490 N (50 kg, 110 Ib) with and make the necessary repairs.
engine running.
C, : Clearance between pedal stopper and threaded
end of stop lamp switch.
-
0.3 - 1.0 mm (0.012 0.039 in)
C, : 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
- -
1.0 3.0 mm (0.039 0.118 in)
BR-5
MASTER CYLINDER
Reservoir tank
Secondary piston
Stopper cap
Piston cup (Primarvl
Sscondary Piston
Piston cup ISecondarvl
Secondary return spring
8 . 11 N m (0.8. 1.1 kg-m, 5.8.8.0 ft-lbl
Proportioning valve
(Do not disassemble)
0 Apply brake fluid or rubber grease to sliding contact sur-
face when assembling master cylinder.
0 Check parts for wear or damage. Replace if any of above
conditions are observed.
0 Replace piston assembly when disassembled.
BR-6
BRAKE BOOSTER
Operating Check Removal and Installation
Depress brake pedal several times with engine R16-22
off, then check that there is no change in pedal
stroke.
Depress brake pedal, then start engine. If pedal
goes down slightly, operation is normal.
11.6-22.12- 18
7
Airtight Check
Start engine, then stop it in one or two minutes. m 8 - 11 10.8-1.1.5.8-8.0) \
Depress brake pedal several times slowly. If 8 - 1 1 10.8-1.1.5.8-8.0)
pedal goes further down the first time, but
gradually rises after second or third time, the
m : N m (kg-m. ft-lbl
SBR831
booster is airtight.
Depress brake pedal while engine is running,
then stop it with pedal depressed. If there is
no change in pedal stroke after holding pedal
for thirty seconds, brake booster is airtight.
BR-7
BRAKE BOOSTER
HOSES AND CONNECTORS OUTPUT ROD LENGTH CHECK
0 Check condition of vacuum hoses and 1. Supply brake booster with vacuum of -66.7
connectors. kPa (-500 mmHg, -19.69 inHg) using a handy
0 Check vacuum hoses and check valve for air vacuum pump.
tightness. 2. Check output rod length.
0 Do not apply any oil or lubricants to vacuum Specified length:
hose and check valve. 10.275 - 10.525 mm (0.4045 - 0.4144 in)
Output rod
length
SBR986
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.
Manifold side Brake booster side
SBR846
BR-8
FRONT DISC BRAKE (CL28VE, CL28VB)-Caliper
CL28VE
Copper washer 0
ml7-2011.7-2.0.12-141 &-Air bleeder cap
Brake hose -, -Air bleeder
-
LuJ -
7 9 1 . .OS. 6.1 ESI
07 .
Inner h i m
ha 231
22- 31 1 2 1 ~ 3 1 , l B ~
pad retainer @
'Wear
indicstor
--[01 : N.m (kp-m,ft-lb)
(i : P.B.C. (POWB ~ . VCunrvritl orease
i, . I . . -
or rilimnbased grease point
@: Rubber grase point
0: Brake fluid p i n t SBR28SA
BR-9
FRONT DISC BRAKE (CL28VE, CL28VB)-Caliper
CL28VB rPad
Torque member fixing bolt
(91 72.97 l7.3.9.9,53.721
r l n n e r shim
Main pin @ t o sliding portion
+ylinder body
Torque member
Wear indicator
(Lower ridel
pin B@ to sliding portion
CAUTION: 2. Swing cylinder body upward. Then remove pad
When cylinder body i s swung up, do not depress retainer and inner and outer shims.
brake pedal because piston will pop out. I
1. Remove brake hose lock spring and pin bolt.
Be careful not t o damage piston boot or get oil on
rotor. Always replace shims when replacing pads.
I
BR-10
FRONT DISC BRAKE (CL28VE, CL28VB)-Caliper
Removal and Installation
Remove torque member fixing bolts and brake CAUTION:
hose connector. Use brake fluid t o clean. Never use mineral oil.
CYLINDER BODY
0 Check inside surface of cylinder for score, rust,
wear, damage or presence of foreign materials.
I f any of the above conditions are observed,
replace cylinder body.
0 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 cover with compressed
CAUTION:
air.
Piston sliding surface is plated. Do not polish with
For CL28VE (2-piston type), use a wooden block
emery paper even if rust or foreign materials are
so that the 2 pistons come out evenly.
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.
0 With dust seal fitted to piston, insert dust seal
into groove on cylinder body and install piston.
S0R005A 0 Properly secure dust seal.
0 Pay attention t o piston seal direction.
+OOt r l
Piston seal
LCylinder body
80n574
BR-11
FRONT DISC BRAKE (CL28VE, 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 with a dial indicator.
Rotor repair limit:
Maximum runout
(Total indicator reading at
center of rotor pad contact surface)
0.07 mm (0.0028 in)
THICKNESS
SBR159A
Rotor repair limit:
Minimum thickness
24.0 mm (0.945 in)
BR-12
REAR DISC BRAKE (CL14HVB)-Caliper
SBR151A
BR-I3
REAR DISC BRAKE (CL14HVB)-Caliper
Pad Replacement
CAUTION:
When cylinder body i s swung up, do not depress
brake pedal because piston will pop out.
1. Disconnect parking brake cable, then remove
pin bolts.
SBR641
Removal and Installation
W Disconnect parking brake cable and brake hose,
SBR 166A
then remove caliper assembly.
2. Remove pad retainer, pads and shims.
SBR160A
3. When installing 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-I 4
REAR DISC BRAKE (CL14HVB)-Caliper
!mbly
1. Remove piston by turning it counterclockwise (2) off ring B, then remove key plate, push rod
Pry
with suitable long nose pliers. and rod.
SBR 164A
SBR646
2. Pry off ring from piston and remove adjusting (3) Remove piston seal.
nut. Be careful not to damage cylinder body.
I
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.
SBRl49A
BR-15
REAR DISC BRAKE (CL14HVB)-Caliper
Inspection
CAUTION: Fit push rod into square hole in key plate. Also
Use brake fluid t o clean. Never use mineral oil. match 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.
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
SER842
Check for wear, cracks or other damage. Replace if
necessary. Install ring B with suitable tool.
Ring B
PISTON
Check piston for score, rust, wear, damage or
Key pt-
a
le
presence of foreign materials. Replace if any wear
or damage i s found.
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.
R0d-N
PIN AND PIN BOOT
SBR165A
Check for wear, cracks or 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-
Spring
S a-
et
Adjust nut
SBR15OA
BR-16
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 with a dial indicator.
SBRl6lA
Rotor repair limit:
Maximum runout
(Total indicator reading a t
center of rotor pad contact surface)
0.07 mm (0.0028 in)
THICKNESS
SBR162A
Rotor repair limit:
Minimum thickness
18.0 mm (0.709 in)
BR-17
PARKING BRAKE
Rear cable assembly IL.H.17
Rear cable assembly LR.H.1
Front cable assembly
fl 1 6 - 2 1 (1.5-2.1.12-15) 1 6 - 2 1 (1.6-2.1,12-15)
Warning switch
fl : N m lkg-m, ft-lb)
SBR163A
Removal Installation
If necessary, separate front cable from parking When installing parking brake cable at rear caliper,
brake lever by breaking pin. make sure to pull back rubber boot to expose
cable.
Front cable, clevis pin and cotter pin are available
as service parts.
lbolrr to rear calipers1
Boot
Cable c o w fining
SBRZSOA
SBR835
BR-18
PARKING BRAKE
Installation (Cont'd) Adjustment
After cable cover fitting is installed in cable guide, STROKE
reattach boot to fitting. Pull lever with specified amount of force.
CAUTION: Check lever stroke and ensure smooth
It is important not to damage boot as it prevents operation.
water from entering cable. Water in cable may
freeze during winter or cause corrosion.
Inspection
1. Check control lever for wear or other damage.
Replace if necessary. arning lamp switch plate
2. Check wires for discontinuity or deterioration.
Replace if necessary.
-
Number of notchas: 8 10
S0R836
3. Check warning lamp and switch. Replace if
Adjust lever stroke.
necessary.
4. Check parts at each connecting portion and, if
found deformed or damaged, replace.
WARNING LAMP SWITCH
Bend parking brake warning lamp switch plate u)
that brake warning light comes on when ratchet a t
parking brake lever is pulled one notch and goes
out when fully released.
BR-19
SERVICE DATA AND SPECIFICATIONS (S.D.S.)
General Specifications Inspection and Adjustment-
BRAKE PEDAL
VG30E VG30ET
Pedal ratio I 3.8
Front brake
CL28VB CU8VE Free height mm (in) I ,;:
- -
182 192 17.17 7.561
I",
".
4 3 x 1 1 x126.5
(1.69~0.43 5ox11x132 490 N 150 kg, 110 Ibl with engine 90 13.54) or more
Pad
x 4.981 running1 mm (in1
Width x thickness x 11.97 xO.43
Outer
length mm (in) x 5.20)
43 129,0 Clearance between pedal stopper and
threaded end of stop lamp switch
mm lid
0.3. 1.0 10.012.0.0391
Rotor outer diameter 274 (10,791 280111.021 Clearance between pedal stopper and
threaded end of A.S.C.D. switch
mm linl
Caliper inner diamnter
60.6 (2.3861 42.8 (1.6851
I
~
mm lin) Pedal free olav mm (in) 1.0.3.0 10.039. 0.1 181
~
Rear brake
Brake model I CL14HVB
Pad I PARKING BRAKE
length mm (in1 I 3 9 . 5 x 8 . 0 ~ 7 5 1 . 5 5 5 ~ 0 . 3 1 5 ~ 2 . 9 5 l
(
Type Center lever type
Rotor outer diameter
mm linl I 282 111.1Ol Number of notches when warning lamp
switch comes on
1
Caliper inner diameter
42.8 (1.6851 Number of notches [When pulled under
mm (in1 8-10
force of 196 N (20 kg, 44 Ibll
Master cylinder
Inner diameter
23.81 (151161
mm linl
Brake booster CHECK VALVE
Diaphragm diameter
mm l i n l
I Primary 205 18.071
Secondary 201 17.91)
Maximum vacuum leakage
[15 recondsafter 66.7 kPa 1500 mmHg,
19.69 inHgl is applied.]
1.3 (10. 0.39)
kPa (mmHg, inHgl
I
Control valve
Proportioning valve
Model (within master cylinder)
I
Sprit point
kPa lkdcm'. mi) I 2942 (30,4271
~
BRAKE BOOSTER
Reducing ratio 0.4 Maximum vacuum leakage
(15 seconds after engine is stopped) 3.3 125.0.981
Remmmended brake fluid DOT 3 kPa ImmHg. inHgl
BR-20
SERVICE DATA AND SPECIFICATIONS (S.D.S.)
-Inspection
DISC BRAKE
and Adjustment
(Cont'd)
Front brake
7
Rear brake
Brake pedal
Tightening Torque
Pdal bracket to body
Nm
-
8 11
ks-m
0.8 - 1.1
it-lb
5.8 -'8.0
Pedal bracket to p d a l 30.40 3.1-4.1 22-30
Brake model CUEVE CU8VB CL14HVB
Stop lamp switch lock 12 15- 1.2-1.5 9-11
Pad wear limit nut
Minimum thickness Brake booster
2.0 (0.0791
mm lin) Brake booster to body -
8 11 0.8. 1.1 5.8. 8.0
Rotor repair limit
Input rod lock nut 16 22- 1.6-2.2 12-16
Maximum runout
Brake booster to 8-11 0.8. 1.1 -
5.8 8.0
0.07 (0.00281 master cylinder
mm (in)
Threeway mnnector
Minimum thickness 24.0 20.0 18.0 Three-way Connector 15.18 1.5-1.8 11-13
mm (in1 (0.9451 (0.7871 I0.709) to brake t u b
Threeway connector 5.7 0.5.0.7 3.6 - 5.1
1.7-2.0 12-14
1.5-1.8 11-13
0.7 .0.9 5.1 - 6.5
0.33.0.44 2.4 - 3.2
-
7.3 9.9 -
53 72
2.2.3.2 16 - 23
6 . 0 . 7.0 43 - 51
1.0-1.4 7-10
3.9.5.3 2 8 . 38
3.2 -4.2 23.30
1.6-2.1 12-15
0.32 0.44- 2.3 - 3.2
0.8. 1.1 -
5.8 8.0
BR-21
SPECIAL SERVICE TOOL
Tool number
Tool name
(Kent-Moore No.)
GG94310000
( - ) I Flare nut torque wrench
BR-22
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