boot INFINITI QX56 2010 Factory Service Manual

FRONT DISC BRAKEBR-29
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FRONT DISC BRAKE
Exploded View of Brake PadsINFOID:0000000005147912
Removal and Installation of Brake PadsINFOID:0000000005147913
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of air borne
particles or other materials.
CAUTION:
• While removing cylinder bod y, do not 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 caliper assembly. In this case, hang cylinder body with a wire so as not to stretch
brake hose.
• Do not damage piston boot.
• If any shim is subject to serious corrosion, replace it with a new one.
• Always replace shim and shim cover as a set when replacing brake pads.
• Keep rotor free from brake fluid.
• Burnish the brake pads and disc rotor mutually contacting surfaces, after refinishing or replacing rotors, after replacing pads, or if a so ft pedal occurs at very low mileage.
REMOVAL
1. Remove front wheel and tires. Refer to WT-49, "Rotation".
2. Partially drain some brake fluid from the reservoir.
3. Remove the sliding pin bolts.
1. Inner multi-layered shim 2. Pad wear sensor 3. Pad retainer
4. Outer shim cover 5. Outer shim6. Outer pad
7. Inner pad 1: Molykote M-77 grease
AWFIA0291GB
Revision: April 20092010 QX56

FRONT DISC BRAKEBR-31
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Exploded View of Brake CaliperINFOID:0000000005147915
Removal and Installation of Brake Caliper and RotorINFOID:0000000005147916
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of air borne
particles or other materials.
CAUTION:
• While removing cylinder bod y, do not depress brake pedal because piston will pop out.
• Do not damage piston boot.
• Keep rotor free from brake fluid.
• Refill with new specified brake fluid.
• Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or it a soft
pedal occurs at very low mileage. Refer to BR-30, "
Brake Burnishing Procedure".
REMOVAL
1. Remove front wheel and tire. Refer to WT-49, "Rotation".
2. Fasten disc rotor using wheel nut.
3. Remove brake reservoir cap.
4. Remove union bolt, and then disconnect brake hose from caliper assembly. NOTE:
Discard the copper washers, do not reuse.
1. Sliding pin bolt 2. Bleed valve 3. Cap
4. Union bolt 5. Brake hose 6. Copper washer
7. Torque member bolt 8. Sliding pin boot 9. Torque member
10. Washers 11. Bushing 12. Sliding pin
13. Piston boot 14. Piston 15. Piston seal
16. Cylinder body Brake fluid1: Molykote M-77 grease
2: Rubber grease
AWFIA0573GB
Revision: April 20092010 QX56

BR-34
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REAR DISC BRAKE
REAR DISC BRAKE
Exploded View of Brake PadsINFOID:0000000005147917
Removal and Installation of Brake PadINFOID:0000000005147918
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of air borne
particles or other materials.
CAUTION:
• While removing cylinder body, do not depress brake pedal because piston will pop out.
• It is not necessary to disconnect brake hose connection except for disassembly or replacement of
caliper assembly. In this case, ha ng cylinder body with a wire so as not to stretch brake hose.
• Do not damage piston boot.
• If any shim is subject to serious corrosion, replace it with a new one.
• Always replace shim and shim cover as a set when replacing brake pads.
• Keep rotor free from brake fluid.
• Burnish the brake pads and disc rotor mutually contacting surfaces, after refinishing or replacing
rotors, after replacing pads, or if a soft pedal occurs at very low mileage.
REMOVAL
1. Remove rear wheel and tires using power tools.
2. Partially drain some brake fluid from the reservoir.
3. Remove the sliding sleeves and sliding pin bolts from the cylinder body.
4. Support the cylinder body with wire, remove pads, shims, cover and retainers.
INSTALLATION
1. Push piston in using suitable tool.
CAUTION:
By pushing in piston, brake fluid returns to mast er cylinder reservoir tank. Watch the brake fluid
level in the reservoir tank.
NOTE:
Using a suitable tool, makes it easier to push in the piston.
1. Inner shim cover 2. Outer pad3. Outer multi-layered shim
4. Pad wear sensor 5. Inner pad (RH)6. Pad retainer
7. Inner pad 8. Inner shim
1: Molykote M-77 grease
AWFIA0293GB
Revision: April 20092010 QX56

REAR DISC BRAKEBR-35
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2. Apply Molykote M-77 grease to knuckle slide where brake pad contacts and to the outer multi-layered
shim, pad retainers and inner shim.
CAUTION:
Do not get grease on the brake pads or brake rotor friction surfaces.
3. Install pads, shims, cover and retainers to cylinder body.
4. Apply rubber grease to the sliding sleeves and install cylinder body, sliding sleeves and sliding pin bolts and tighten to specification. Refer to BR-35, "
Exploded View of Brake Caliper".
5. Check rear disc brake for drag.
6. Install rear wheel and tires. Refer to WT-49, "
Rotation".
Brake Burnishing ProcedureINFOID:0000000005147919
Burnish contact surfaces between disc rotors and pads according to following procedure after refinishing or
replacing rotors, after replacing pads, 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 seated.
• 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 through 3 until pad and disc rotor are securely seated.
Exploded View of Brake CaliperINFOID:0000000005147920
1. Union bolt 2. Brake hose 3. Copper washer
4. Cap 5. Bleed valve 6. Sliding pin bolt
7. Cylinder body 8. Piston seal 9. Piston
10. Piston boot 11. Knuckle slide 12. Sliding sleeve boot
AWFIA0423GB
Revision: April 20092010 QX56

BR-36
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REAR DISC BRAKE
Removal and Installation of Brake Caliper and Disc Rotor
INFOID:0000000005147921
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of air borne
particles or other materials.
CAUTION:
• While removing cylinder body, do not depress brake pedal because piston will pop out.
• Do not damage piston boot.
• Keep rotor free from brake fluid.
• Refill with new specified brake fluid.
• Burnish brake contact surface after refinishing or re placing rotors, after replacing pads, or it a soft
pedal occurs at very low mileage. Refer to BR-35, "
Brake Burnishing Procedure".
REMOVAL
1. Remove rear wheel and tire using power tool.
2. Fasten disc rotor using wheel nut.
3. Remove brake reservoir cap.
4. Remove union bolt and cylinder body bolts, then remove cylin-
der body.
NOTE:
Discard the copper washers, do not reuse.
5. Apply matching marks to disc rotor and wheel hub assembly if the disc rotor is to be reused, then remove disc rotor.
CAUTION:
Put matching marks on wheel hub assembly and disc rotor
if the disc rotor is to be reused.
INSTALLATION
1. If reusing the disc rotor, use the matching marks to align disc rotor on the wheel hub assembly, then install
disc rotor using a wheel nut to hold it in place.
CAUTION:
Use matching marks on wheel hub assembly and di sc rotor if the disc rotor is to be reused.
2. Install cylinder body and tighten cylinder body bolts to specification. CAUTION:
Before installing cylinder body to the vehic le, wipe off mating surface of cylinder body.
3. Install brake hose to cylinder body with new copper washers and tighten union bolt to specification.
CAUTION:
• Do not reuse copper washers.
• Securely attach brake hose to projection on cylinderbody.
4. Refill with new brake fluid and bleed. Refer to BR-17, "
Bleeding
Brake System".
5. Check rear disc brake for drag and correct as necessary.
6. Install rear wheel and tire. Refer to WT-49, "
Rotation".
13. Sliding sleeveB. Brake fluid R. Rubber grease
M. Molykote M-77 Front
LFIA0211E
SFIA1137E
Revision: April 20092010 QX56

FRONT DISC BRAKEBR-39
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FRONT DISC BRAKE
Disassembly and AssemblyINFOID:0000000005147923
DISASSEMBLY
1. Remove sliding pin bolts, and then remove the pads, sh ims, shim cover, and pad retainers from the torque
member.
2. Remove sliding pins and sliding pin boots from torque member.
3. Place a wooden block as shown, and blow air from union bolt hole to remove pistons and piston boots.
CAUTION:
Do not get your fingers caught in piston.
1. Sliding pin bolt 2. Bleed valve 3. Cap
4. Union bolt 5. Brake hose 6. Copper washer
7. Torque member bolt 8. Sliding pin boot 9. Torque member
10. Washers 11. Bushing 12. Sliding pin
13. Piston boot 14. Piston 15. Piston seal
16. Cylinder body Brake fluid1: Molykote M-77 grease
2: Rubber grease
AWFIA0573GB
BRB0032D
Revision: April 20092010 QX56

BR-40
< DISASSEMBLY AND ASSEMBLY >
FRONT DISC BRAKE
4. Remove piston seals from cylinder body, using a suitable tool.CAUTION:
• Be careful not to damage cylinder inner wall.
• Do not reuse piston seals.
5. Remove the bleeder valve and cap.
CALIPER INSPECTION
Cylinder Body
Check inside surface of cylinder for score, rust, wear, damage or foreign materials. If any of the above condi-
tions are observed, replace cylinder body.
Minor damage from rust or foreign materials may be el iminated by polishing surface with a fine emery paper.
Replace cylinder body if necessary.
CAUTION:
Use new brake fluid for cleaning. Do not use mineral oils such as gasoline or kerosene.
Torque Member
Check for wear, cracks, and damage. If damage or def ormation is present, replace the affected part.
Piston
Check piston for score, rust, wear, damage or presence of foreign materials. Replace if any of the above con-
ditions are observed.
CAUTION:
Piston sliding surface is plated, do not polish with emery paper even if rust or foreign materials are
stuck to sliding surface.
Sliding Pins, and Sliding Pin Boots
Check sliding pin and sliding pin boot for wear, damage, and cracks. If damage or deformation is present,
replace the affected part.
CAUTION:
Trailing/upper slidi ng pin must be replaced at each service.
ASSEMBLY
CAUTION:
Do not use NISSAN Rubber Grease ( KRE00 00010, KRE00 00010 01) when assembling.
1. Install the bleeder valve and cap.
2. Apply Molykote M-77 grease to new piston seals and insert seals into grooves on cylinder body.
CAUTION:
Do not reuse piston seals.
SFIA0141E
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Revision: April 20092010 QX56

FRONT DISC BRAKEBR-41
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3. Apply Molykote M-77 grease to piston boots. Cover the piston ends with piston boots, and then install cylinder side lip on piston
boots securely into the grooves on cylinder body.
CAUTION:
Do not reuse piston boots.
4. Apply clean brake fluid to pistons, then install pistons into cylin- der body and insert piston boot side lip into groove of pistons as
shown.
CAUTION:
Press the pistons evenly to prevent damage to cylinder
wall.
5. Apply rubber grease and insert into cylinder body by hand and insert piston bo\
ot piston-side lip into piston groove.
CAUTION:
Press pistons evenly and vary the pr essing point to prevent cylinder inner wall from being rubbed.
6. Apply rubber grease and install sliding pins, bushing and sliding pin boots to torque member.
7. Install the pads, shims, shim cover, and pad retainers from the torque member.
8. Install cylinder body. Tighten sliding pin bolts to the specified torque.
SFIA2432E
WFIA0211E
Revision: April 20092010 QX56

BR-42
< DISASSEMBLY AND ASSEMBLY >
REAR DISC BRAKE
REAR DISC BRAKE
Disassembly and AssemblyINFOID:0000000005147924
DISASSEMBLY
1. Remove pads from cylinder body.
2. Remove sliding sleeve and boot from cylinder body.
3. Place a wooden block as shown, and blow air into union bolthole to remove piston and piston boot.
CAUTION:
Do not get your fingers caught in piston.
1. Union bolt 2. Brake hose3. Copper washer
4. Cap 5. Bleed valve6. Sliding pin bolt
7. Cylinder body 8. Piston seal9. Piston
10. Piston boot 11. Knuckle slide12. Sliding sleeve boot
13. Sliding sleeve B. Brake fluidR. Rubber grease
M. Molykote M-77 Front
AWFIA0423GB
BRD0041D
Revision: April 20092010 QX56

REAR DISC BRAKEBR-43
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4. Using a suitable tool, remove piston seal from cylinder body as shown.
CAUTION:
Be careful not to damage cylinder body inner wall.
5. Remove the bleeder valve and cap.
CALIPER INSPECTION
Cylinder Body
Check inside surface of cylinder body for score, rust wear, damage or foreign materials. If any of the above
conditions are observed, replace cylinder body.
Minor damage from rust or foreign materials may be eliminated by polishing surface with a fine emery paper.
Replace cylinder body if necessary.
CAUTION:
• Use new brake fluid to clean. Do not use mi neral oils such as gasoline or kerosene.
Torque Member
Check for wear, cracks, and damage. If damage or deformation is present, replace the affected part.
Piston
Check piston for score, rust, wear, damage or presence of foreign materials. Replace if any of the above con-
ditions are observed.
CAUTION:
• Piston sliding surface is plated, do not polish with emery paper even if rust of foreign materials are
stuck to sliding surface.
Sliding Pin Bolts and Sliding Pin Boots
Make sure there is no wear, damage, or cracks in sliding sleeve and sliding sleeve boots, and if there are,
replace them.
ASSEMBLY
CAUTION:
Do not use NISSAN Rubber Grease ( KRE00 00010, KRE00 00010 01) when assembling.
1. Install the bleeder valve and cap.
2. Apply clean brake fluid to new piston seal and insert in to groove on cylinder body.
CAUTION:
Do not reuse piston seal.
PFIA0269E
WFIA0210E
Revision: April 20092010 QX56