2005 INFINITI QX4 Factory Service Manual

four wheel drive audio gas type steering wheel wheel torque display

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Page 993 of 3419

INFINITI QX4 2005 Factory Service Manual BR-14
BRAKE MASTER CYLINDER
Revision: October 20052005 QX56
BRAKE MASTER CYLINDERPFP:46010
On-board InspectionEFS004W9
LEAK INSPECTION
Check for leaks at brake master cylinder to brake booster attach

Page 994 of 3419

INFINITI QX4 2005 Factory Service Manual BRAKE MASTER CYLINDER
BR-15
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Revision: October 20052005 QX56
INSTALLATION
Installation is in the reverse order of removal.
Refill brake fluid and bleed air. Refer to BR-10,

Page 995 of 3419

INFINITI QX4 2005 Factory Service Manual BR-16
BRAKE BOOSTER
Revision: October 20052005 QX56
BRAKE BOOSTERPFP:47200
On-Vehicle ServiceEF S0 04 WC
OPERATING CHECK
With engine stopped, change the vacuum to the atmospheric pres-
sure by depress

Page 996 of 3419

INFINITI QX4 2005 Factory Service Manual BRAKE BOOSTER
BR-17
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Revision: October 20052005 QX56
Removal and InstallationEFS004WD
REMOVAL
CAUTION:
Be careful not to deform or bend brake piping while removing and insta

Page 997 of 3419

INFINITI QX4 2005 Factory Service Manual BR-18
BRAKE BOOSTER
Revision: October 20052005 QX56
6. Connect active boost and delta stroke sensor harness connectors to brake booster assembly.
7. Connect vacuum hose to brake booster.
8. Install ma

Page 998 of 3419

INFINITI QX4 2005 Factory Service Manual VACUUM LINES
BR-19
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Revision: October 20052005 QX56
VACUUM LINESPFP:41920
Removal and InstallationEFS004WE
1. Disconnect vacuum hose from hose clip.
2. Release clamps and disc

Page 999 of 3419

INFINITI QX4 2005 Factory Service Manual BR-20
FRONT DISC BRAKE
Revision: October 20052005 QX56
FRONT DISC BRAKEPFP:41000
On-vehicle InspectionEFS004WG
PAD WEAR INSPECTION
Inspect the thickness of pad through cylinder body inspection
hole.

Page 1000 of 3419

INFINITI QX4 2005 Factory Service Manual FRONT DISC BRAKE
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Revision: October 20052005 QX56
WA RN ING:
Clean dust on cylinder body and brake pads with a vacuum dust collector to minimize the hazard of
airborne p

FRONT DISC BRAKE
BR-21
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Revision: October 20052005 QX56
WA RN ING:
Clean dust on cylinder body and brake pads with a vacuum dust collector to minimize the hazard of
airborne particles or other materials.
CAUTION:
While removing cylinder body never depress brake pedal because piston will pop out.
It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of cylinder body. In this case, hang cylinder body with a wire so as not to stretch
brake hose.
Do not damage piston boot.
Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or if a soft
pedal occurs at very low mileage. Refer to BR-24, "
BRAKE BURNISHING PROCEDURE" .
Removal and Installation of Brake PadEFS004WI
REMOVAL
1. Remove tires from vehicle using power tool.
2. Remove lower sliding pin bolt.
3. Suspend cylinder body with a wire and remove pad retainers, pads, and shims from torque member.
INSTALLATION
1. Push pistons in so that pad is firmly installed and mount cylinder body to torque member.
NOTE:
Using a disc brake piston tool (commercial service tool), makes it easier to push in piston.
CAUTION:
By pushing in piston, brake fluid returns to master cylinder reservoir tank. Watch the level of the
surface of reservoir tank.
2. Attach pad retainers, pads, and shims to torque member.
NOTE:
Apply Molykote M-77 grease to shims and pad retainers where brake pads contact.
CAUTION:
When attaching pad retainer, attach it firmly so that it does
not float up higher than torque member, as shown in the fig-
ure.
3. Install lower sliding pin bolt and tighten it to the specified torque.
Refer to BR-20, "
Components" .
4. Check brake for drag.
5. Install tires to the vehicle. Refer to WT-7, "
Rotation" .
Removal and Installation of Brake Caliper Assembly and Disc RotorEFS004WJ
REMOVAL
1. Remove tires from vehicle using power tool.
2. Drain brake fluid as necessary. Refer to BR-9, "
Drain and Refill" .
NOTE:
Do not remove union bolt unless removing cylinder body from vehicle.
3. Remove torque member bolts.
NOTE:
Position cylinder body aside using suitable wire, as necessary.
NOTE:
When servicing cylinder body, remove sliding pin bolts and torque member from cylinder body.
4. Remove disc rotor.
INSTALLATION
CAUTION:
Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" .
PFIA0273E

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