Infiniti G37 Coupe. Manual — part 256
BR-62
< ON-VEHICLE REPAIR >
REAR DISC BRAKE
2.
Apply rubber grease to piston boots (1). Cover the piston (2) end
with piston boots, and then install caliper side lip on piston boot
securely into a groove on caliper.
CAUTION:
Never reuse piston boots.
3.
Apply brake fluid to piston. Push piston into caliper by hand and
push piston boot piston-side lip into the piston groove.
CAUTION:
Press the piston evenly and vary the pressing point to pre-
vent caliper inner wall from being rubbed.
4.
Install the caliper to tighten the caliper mounting bolts to the
specified torque.
BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Inspection and Adjustment
INFOID:0000000001664898
INSPECTION AFTER DISASSEMBLY
Caliper
Check the inner wall of the caliper for rust, wear, cracks or damage. Replace the caliper if any abnormal con-
dition is detected.
CAUTION:
Always clean with new brake fluid. Never clean with mineral oil such as gasoline and light oil.
Pistons
Check the surface of the piston for rust, wear, cracks or damage. Replace the piston if any abnormal condition
is detected.
CAUTION:
A piston sliding surface is plated. Never polish with sandpaper.
ADJUSTMENT AFTER INSTALLATION
Brake Burnishing Procedure
Burnish contact surfaces between disc rotors and pads according to following procedure after refinishing or
replacing disc rotor, or if a soft pedal occurs at very low mileage.
CAUTION:
• Be careful of vehicle speed because the brake does not operate easily until pad and disc rotor are
securely fitted.
• Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1.
Drive vehicle on straight, flat road.
2.
Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.
3.
Drive without depressing brake for a few minutes to cool the brake.
4.
Repeat steps 1 to 3 until pad and disc rotor are securely fitted.
PFIA0906J
SERVICE DATA AND SPECIFICATIONS (SDS)
BR-63
< SERVICE DATA AND SPECIFICATIONS (SDS)
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
INFOID:0000000001647892
FRONT AND REAR CALIPER 1 PISTON TYPE
Unit: mm (in)
FRONT CALIPER 4 PISTON, REAR CALIPER 2 PISTON TYPE
Unit: mm (in)
Brake Pedal
INFOID:0000000001647893
Unit: mm (in)
Brake Booster
INFOID:0000000001647894
Vacuum type
Unit: mm (in)
Front brake
Cylinder bore diameter
57.15 (2.250)
Pad length
×
width
×
thickness
116.1
×
51.7
×
10.3 (4.57
×
2.035
×
0.406)
Rotor outer diameter
×
thickness
330
×
32.0 (12.99
×
1.260)
Rear brake
Cylinder bore diameter
38.1 (1.500)
Pad length
×
width
×
thickness
83.0
×
33.0
×
8.5 (3.268
×
1.299
×
0.335)
Rotor outer diameter
×
thickness
330
×
16.0 (12.99
×
0.630)
Master cylinder
Cylinder bore diameter
23.8 (15/16)
Control valve
Valve type
Electric brake force distribution
Brake booster
Diaphragm diameter
Primary: 230 (9)
Secondary: 205 (8)
Recommended brake fluid
DOT 3
Front brake
Cylinder bore diameter
41.3 (1.626)
×
2 + 44.45 (1.750)
×
2
Pad length
×
width
×
thickness
123.2
×
55.0
×
11.0 (4.85
×
2.165
×
0.433)
Rotor outer diameter
×
thickness
355
×
32.0 (13.98
×
1.260)
Rear brake
Cylinder bore diameter
41.3 (1.626)
×
2
Pad length
×
width
×
thickness
95.8
×
41.5
×
9.5 (3.772
×
1.634
×
0.374)
Rotor outer diameter
×
thickness
350
×
20.0 (13.78
×
0.787)
Master cylinder
Cylinder bore diameter
25.4 (1)
Control valve
Valve type
Electric brake force distribution
Brake booster
Diaphragm diameter
Primary: 230 (9)
Secondary: 205 (8)
Recommended brake fluid
DOT 3
Brake pedal height (H
1
)
171.5 – 181.5 (6.75 – 7.15)
Clearance (C
1
) between ASCD brake switch threaded end and the stopper rubber
0 – 0.6 (0 – 0.024)
Clearance (C
2
) between the stop lamp switch threaded end and the stopper rubber
0.74 – 1.96 (0.0291 – 0.0772)
Brake pedal play (A)
2.0 – 8.0 (0.079 – 0.315)
Brake pedal shaky fitting (B)
0 – 1.4 (0.0 – 0.055)
Depressed brake pedal height (H
2
)
[Depressing 490 N (50 kg, 110 lb) while turning the engine ON]
124.0 (4.88) or more
Input rod length (B)
128.0 (5.04)
BR-64
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Front Disc Brake
INFOID:0000000001647895
1 PISTON TYPE
Unit: mm (in)
4 PISTON TYPE
Unit: mm (in)
Rear Disc Brake
INFOID:0000000001647896
1 PISTON TYPE
Unit: mm (in)
2 PISTON TYPE
Unit: mm (in)
Brake pad
Standard thickness
10.3 (0.406)
Wear limit thickness
2.0 (0.079)
Disc rotor
Standard thickness
32.0 (1.260)
Wear limit thickness
30.0 (1.181)
Thickness variation (measured at 8 positions)
0.015 (0.0006)
Runout limit (with it attached to the vehicle)
0.035 (0.0014)
Brake pad
Standard thickness
11.0 (0.433)
Wear limit thickness
2.0 (0.079)
Disc rotor
Standard thickness
32.0 (1.260)
Wear limit thickness
30.0 (1.181)
Thickness variation (measured at 8 positions)
0.015 (0.0006)
Runout limit (with it attached to the vehicle)
0.035 (0.0014)
Brake pad
Standard thickness
8.5 (0.335)
Wear limit thickness
2.0 (0.079)
Disc rotor
Standard thickness
16.0 (0.631)
Wear limit thickness
15.0 (0.591)
Thickness variation (measured at 8 positions)
0.015 (0.0006)
Runout limit (with it attached to the vehicle)
0.055 (0.0022)
Brake pad
Standard thickness
8.5 (0.335)
Wear limit thickness
2.0 (0.079)
Disc rotor
Standard thickness
20.0 (0.787)
Wear limit thickness
18.0 (0.709)
Thickness variation (measured at 8 positions)
0.015 (0.0006)
Runout limit (with it attached to the vehicle)
0.055 (0.0022)
BRC-1
BRAKES
C
D
E
G
H
I
J
K
L
M
SECTION
BRC
A
B
BRC
N
O
P
CONTENTS
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW . . ..
Work Flow . . . . . . . . . . . . . . . .....
Diagnostic Work Sheet . . . . . . . . . . . ..
INSPECTION AND ADJUSTMENT . . . . . .
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT . . . . . . . . . . . . . . ..
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description . . . . . . . . ..
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement . ...
ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION . . . . . . . . . . . . ..
ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION : Description . . . . . . ..
FUNCTION DIAGNOSIS . . . . . . . ..
VDC . . . . . . . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Component Parts Location . . . . . . . . . ..
Component Description . . . . . . . . . . ...
TCS . . . . . . . . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Component Parts Location . . . . . . . . . ..
Component Description . . . . . . . . . . ...
ABS . . . . . . . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Component Parts Location . . . . . . . . . ..
Component Description . . . . . . . . . . ...
EBD . . . . . . . . . . . . . . . . ...
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . ..
Component Parts Location . . . . . . . . . ..
Component Description . . . . . . . . . . ...
DIAGNOSIS SYSTEM [ABS ACTUATOR
AND ELECTRIC UNIT (CONTROL UNIT)] . ...
CONSULT-III Function . . . . . . . . . . .
COMPONENT DIAGNOSIS . . . . . . .
C1101, C1102, C1103, C1104 WHEEL SEN-
SOR-1 . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . . .
Special Repair Requirement . . . . . . . . .
C1105, C1106, C1107, C1108 WHEEL SEN-
SOR-2 . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . . .
Special Repair Requirement . . . . . . . . .
C1109 POWER AND GROUND SYSTEM . .
Description . . . . . . . . . . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Special Repair Requirement . . . . . . . . .
C1110, C1153, C1170 ABS ACTUATOR AND
ELECTRIC UNIT (CONTROL UNIT) . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
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