Infiniti QX56 (JA60). Manual — part 113
BR-12
< BASIC INSPECTION >
BRAKE MASTER CYLINDER
BRAKE MASTER CYLINDER
On Board Inspection
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LEAK INSPECTION
Check for leaks at master cylinder to brake booster attachment point, reservoir tank, and brake tube connec-
tions.
BRAKE TUBE AND HOSE
BR-13
< BASIC INSPECTION >
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BRAKE TUBE AND HOSE
Hydraulic Circuit
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CAUTION:
• All hoses and piping (tubes) must be free from excessive bending, twisting and pulling.
• Make sure there is no interference with other parts when turning the steering wheel both clockwise
and counterclockwise.
• The brake piping is an important safety part. If a brake fluid leak is detected, always disassemble the
parts. Replace applicable part with a new one, if necessary.
• Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.
• Do not bend or twist brake hose sharply, or strongly pull it.
• When removing components, cover connections so that no dirt, dust, or other foreign matter gets in.
• Refill with new specified brake fluid. Refer to
MA-13, "Fluids and Lubricants"
.
• Do not reuse drained brake fluid.
FRONT BRAKE
FRONT BRAKE : Inspection
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INSPECTION AFTER REMOVAL
CAUTION:
Brake tubes and hoses are important safety parts. Always disassemble the parts and retighten their fit-
tings, if a brake fluid leak is detected. Replace applicable part with a new one, if damaged part is
detected.
1.
Actuator
2.
Master cylinder
3.
Brake booster
4.
Connector
A.
Union bolt
18.2 N·m (1.9 kg-m, 13 ft-lb)
B.
Flare nut M12
18.2 N·m (1.9 kg-m, 13 ft-lb)
C.
Flare nut M10
16.2 N·m (1.7 kg-m, 12 ft-lb)
AWFIA0411ZZ
BR-14
< BASIC INSPECTION >
BRAKE TUBE AND HOSE
1. Check brake lines (tubes and hoses) and connections for fluid leaks, damage, twists, deformation, con-
tacts with other parts, and loose connections. Replace any parts as necessary. Refer to
and Installation of Front Brake Piping and Brake Hose"
2. While depressing brake pedal under a force of 785 N (80 kg-f, 177 lb-f) with engine running for approxi-
mately 5 seconds, check each part for fluid leaks.
REAR BRAKE
REAR BRAKE : Inspection
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INSPECTION AFTER REMOVAL
CAUTION:
Brake tubes and hoses are important safety parts. Always disassemble the parts and retighten their fit-
tings, if a brake fluid leak is detected. Replace applicable part with a new one, if damaged part is
detected.
1. Check brake lines (tubes and hoses) and connections for fluid leaks, damage, twists, deformation, con-
tacts with other parts, and loose connections. Replace any parts as necessary. Refer to
and Installation of Rear Brake Piping and Brake Hose"
.
2. While depressing brake pedal under a force of 785 N (80 kg-f, 177 lb-f) with engine running for approxi-
mately 5 seconds, check each part for fluid leaks.
BRAKE PEDAL
BR-15
< ON-VEHICLE MAINTENANCE >
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ON-VEHICLE MAINTENANCE
BRAKE PEDAL
Inspection and Adjustment
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INSPECTION
1. Inspect the brake pedal free height (H) from the floor using Tool
at a 90
° angle to the floor as shown.
2. Adjust the brake pedal height to specifications.
CAUTION:
When equipped with adjustable pedal, the pedal must be in
the forward most (closest to the floor) position for pedal
height measurement.
Brake Pedal Specifications
Unit: mm (in)
ADJUSTMENT
1. Loosen the stop lamp switch and ASCD cancel switch by turning them 45
° counterclockwise.
Tool number :
—
(J-46532)
ALFIA0149ZZ
Pedal free height (H) with pedal in forward most position
Refer to
Pedal travel (T)
Refer to
Clearance between brake pedal bracket and threaded end of stop lamp switch and
ASCD cancel switch
Refer to
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