brake pads NISSAN X-TRAIL 2001 Service Repair Manual

PRECAUTIONS
BR-3
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS002F9
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
●To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
●Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors.
Precautions for Brake SystemEFS000BZ
●Clean dust on brake pads, shoes, drums, and back plates with a vacuum dust collector. Do not blow with
compressed air.
●Recommended fluid is brake fluid “DOT 3” or “DOT 4”.
●Never reuse drained brake fluid.
●Be careful not to splash brake fluid on painted areas such as the body. If brake fluid is splashed or spilled
on paint, wipe it off and flush the area with water immediately.
●Use only clean brake fluid when cleaning master cylinder and disc brake components.
●Never use mineral oils such as gasoline or kerosene to clean. They will ruin the rubber parts and cause
improper operation.
●Always use a flare nut torque wrench to securely tighten brake
tube flare nuts.
●The brake system is an important safety part. If a brake fluid
leak is detected, always disassemble the related parts. If dam-
age, deformation or excessive wear is detected, replace
affected parts with new ones.
●Before staring operation, be sure to turn the ignition switch OFF
and disconnect the ABS actuator and control module connector
or battery cables.
●When installing brake piping, be sure to check torque.SBR820BA

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
BR-5
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEFS000TK
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
X: ApplicableReference page
BR-21
,BR-26
BR-21
,BR-26
.
BR-21
,BR-26—
—
BR-24,BR-29—
—
—
BR-24,BR-30—
NVH in PR section
NHV in RFD section
NVH in FAX, RAX and FSU, RSU section
NVH in WT section
NVH in WT section
NVH in RAX section
NVH in PS section
Possible cause and
SUSPECTED PARTS
Pads - damaged
Pads - uneven wear
Shims damaged
Rotor imbalance
Rotor damage
Rotor runout
Rotor deformation
Rotor deflection
Rotor rust
Rotor thickness variation
Drum out of round
PROPELLER SHAFT
DIFFERENTIAL
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
STEERING
Symptom BRAKENoise××× ×× ×××
××
Shake×××××
××
Shimmy, Judder××××××× ××× ×

BR-10
BRAKE FLUID
4. Be sure there is no foreign material in reservoir tank. Refill with
new brake fluid.
5. Connect a vinyl tube to the air bleeder.
6. Rest foot on brake pedal. Loosen air bleeder. Slowly depress
pedal until it stops. Tighten air bleeder. Release brake pedal.
Repeat this process a few times, then pause to add new brake
fluid to master cylinder. Continue until new brake fluid flows out.
For bleeding procedure. Refer to BR-10, "
Bleeding Brake Sys-
tem" .
Brake Burnishing ProcedureEFS001C8
Burnish the brake contact surfaces according to the following procedure after refinishing or replacing drums or
rotors, after replacing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:
Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1. Drive the vehicle on a straight smooth road at 50 km/h (31 MPH).
2. Use medium brake pedal/foot effort to bring the vehicle to a complete stop from 50 km/h (31 MPH). Adjust
brake pedal/foot pressure such that vehicle stopping time equals 3 to 5 seconds.
3. To cool the brake system, drive the vehicle at 50 km/h (31 MPH) for 1 minute without stopping.
4. Repeat steps 1 to 3, 10 times or more to complete the burnishing procedure.
Bleeding Brake SystemEFS000C4
CAUTION:
●Carefully monitor brake fluid level at master cylinder during bleeding operation.
●Fill reservoir with new brake fluid “DOT 3” or “DOT 4”. Make sure it is full at all times while bleed-
ing air out of system.
●Place a container under master cylinder to avoid spillage of brake fluid.
●While bleeding, pay attention to master cylinder fluid level.
●For models with ABS, turn ignition switch OFF and disconnect ABS actuator connectors or bat-
tery ground cable.
●Bleed air in the following order.
Right rear brake, Left front brake, Left rear brake, Right front brake
1. Turn OFF ignition switch. Remove ABS actuator connector.
2. Connect a vinyl tube to the air bleeder.
3. Fully depress the brake pedal 4 to 5 times.
4. With brake pedal depressed, loosen air bleeder and bleed air.
5. Close air bleeder.
6. Slowly release brake pedal.
7. Tighten air bleeder to the specified torque.
8. Repeat steps 2 - 7. Occasionally refill master cylinder reservoir tank. Be sure to keep it at least half-full.
BRA0006D
: 6.9 - 8.8 N·m (0.7 - 0.9 kg-m, 61- 78 in-lb)

FRONT DISC BRAKE
BR-21
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FRONT DISC BRAKEPFP:41000
ComponentEFS000CG
WARNING:
●Clean brake pads with a vacuum dust collector to minimize the hazard of airborne particles or
other materials.
CAUTION:
●When cylinder body is open, do not depress brake pedal because piston will pop out.
●Be careful not to damage piston boot or get oil on rotor. Always replace shims when replacing
pads.
●If shims are rusted or show peeling of the rubber coat, replace them with new shims.
●It is not necessary to remove connecting bolt except for disassembly or replacement of caliper
assembly. In this case, suspend cylinder body with wire so as not to stretch brake hose.
●Burnish the brake contact surfaces after refinishing or replacing drums or rotors, after replacing
pads or linings, or if a soft pedal occurs at very low mileage. Refer to BR-10, "
Brake Burnishing
Procedure" .
InspectionEFS000CH
PAD THICKNESS
Check pad thickness by lifting vehicle, removing the wheel, and
looking through check hole on cylinder body. If necessary, use a
scale.
1. Torque member 2. Slid pin boot 3. Slid pin
4. Outer shim cover 5. Outer shim 6. Outer pad
7. Pad retainer 8. Inner pad 9. Inner shim
10. Inner shim cover 11. Piston boots 12. Piston
13. piston seal 14. Cylinder body 15. Copper washer
16. Air bleeder 17. Brake hose union bolt
SFIA0328E
Standard pad thickness : 11 mm (0.43 in)
Pad wear limit : 2.0 mm (0.079 in)
MAA0439D

BR-22
FRONT DISC BRAKE
Pad Replacement
EFS000CI
REMOVAL
CAUTION:
When replacing brake pads, always replace inner shims, outer shims, and shim covers as a set.
1. Remove master cylinder reservoir tank cap.
2. Remove lower sliding pin bolt.
3. Hang cylinder body with a wire, and remove pads, pad retainers,
shims and pad return springs.
INSTALLATION
1. Apply brake grease on back of the pad and both sides of the shim. Install inner shim and inner shim cover
to inner pad, outer shim to outer pad.
2. Apply brake grease on the pad retainer pad contact surface. Install pad retainers, pads and pad return
springs to the torque member.
3. Connect cylinder body to the torque member.
CAUTION:
When replacing pads with new ones, press piston in until the pads can be installed. Carefully mon-
itor brake master cylinder reservoir fluid level. Brake fluid will return, raising master cylinder res-
ervoir tank fluid level.
4. Insert lower sliding pin bolt and tighten to the specified torque.
5. Check brakes for drag.
Caliper Removal and InstallationEFS000CJ
REMOVAL
1. Connect a vinyl tube to the air bleeder.
2. Drain brake fluid gradually from air bleeder while depressing brake pedal.
3. Remove union bolts and torque member mounting bolts, and
remove caliper assembly.
4. Remove disc rotor.
SBR433D
SBR932C
SBR979B

FRONT DISC BRAKE
BR-25
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2. Apply brake fluid or rubber lubricant to piston boots. Cover pis-
ton end with piston boot. Install cylinder side lip on piston boot
properly into groove on cylinder body.
CAUTION:
Do not reuse piston boot.
3. Apply brake fluid to piston. Press piston into cylinder body by
hand. Assemble piston side lip on piston boot properly into
groove on piston.
CAUTION:
Press piston evenly and change pressing point to prevent
cylinder inner wall from being rubbed.
BRAKE BURNISHING PROCEDURE
Burnish the brake contact surfaces according to the following procedure after refinishing or replacing drums or
rotors, after replacing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:
Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1. Drive the vehicle on a straight smooth road at 50 km/h (31 MPH).
2. Use medium brake pedal/foot effort to bring the vehicle to a complete stop from 50 km/h (31 MPH).
Adjust brake pedal/foot pressure such that vehicle stopping time equals 3 to 5 seconds.
3. To cool the brake system, drive the vehicle at 50 km/h (31 MPH) for 1 minute without stopping.
4. Repeat steps 1 to 3, 10 times or more to complete the burnishing procedure.
SFIA0155E
SBR574

BR-26
REAR DISC BRAKE
REAR DISC BRAKE
PFP:44000
ComponentEFS0017X
WARNING:
●Clean dust on brake caliper and pad with a vacuum dust collector. Do not blow with compressed
air.
CAUTION:
●Never depress brake pedal while removing cylinder body because the piston will pop out.
●Do not remove brake hose and torque member mounting bolts unless disassembling or replacing
caliper assembly. Hang the cylinder body with a wire so that the brake hose is not under tension.
●Be careful not to damage the piston boot. Do not allow brake fluid to get on the rotor.
●When replacing brake pads, always replace inner shims, outer shims, and shim covers as a set.
InspectionEFS0017Y
PAD WEAR INSPECTION
Check pad thickness by lifting vehicle, removing the wheel, and
looking through check hole on cylinder body. If necessary, use a
scale.
1. Pad retainer 2. Outer shim cover 3. Outer shim
4. Outer pad 5. Pad retainer 6. Inner pad
7. Inner shim 8. Inner shim cover 9. Sliding pin boot
10. Sliding pin 11. Sliding pin bolt 12. Cylinder body
13. Copper washer 14. Brake hose 15. Union bolt
16. Copper washer 17. Air bleeder 18. Piston seal
19. Piston 20. Piston boot 21. Retaining ring
22. Torque member
SFIA0330E
standard thickness : 8.5 mm (0.335 in)
pad wear limit : 2.0 mm (0.079 in)
BRA0010D

REAR DISC BRAKE
BR-27
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Pad ReplacementEFS0017Z
REMOVAL
CAUTION:
When replacing brake pads, always replace inner shims, outer shims, and shim covers as a set.
1. Remove master cylinder reservoir tank cap.
2. Remove lower sliding pin bolt.
3. Hang cylinder body with a wire, and remove pads, pad retainers,
and shims.
INSTALLATION
1. Apply brake grease on back of the pad and both sides of the shim. Install inner shim and inner shim cover
to inner pad, outer shim to outer pad.
2. Install pad retainers to torque member and install pads.
3. Connect cylinder body to the torque member.
CAUTION:
When replacing pads with new ones, press piston in until the pads can be installed. Carefully mon-
itor brake master cylinder reservoir fluid level. Brake fluid will return, raising master cylinder res-
ervoir tank fluid level.
4. Insert lower sliding pin bolt and tighten to the specified torque.
5. Check brakes for drag.
BRB0302D
SBR042C

BR-28
REAR DISC BRAKE
Caliper Removal and Installation
EFS00180
REMOVAL
1. Connect a vinyl tube to the air bleeder.
2. Drain brake fluid gradually from air bleeder while depressing
brake pedal.
3. Remove brake hose connected to caliper assembly and union
bolts. Remove brake hose from caliper assembly.
4. Remove union bolts and torque member mounting bolts, and
remove caliper assembly.
5. Remove disc rotor.
INSTALLATION
CAUTION:
●Refill with new brake fluid “DOT 3 or DOT 4”.
●Never reuse drained brake fluid.
1. Install disc rotor.
2. Install caliper assembly. Tighten mounting bolts to the specified torque.
CAUTION:
Wipe oil and grease on axle assembly washer seats and caliper assembly mounting surface.
Install caliper assembly.
3. Connect brake hose to caliper assembly and tighten union bolts to the specified torque.
CAUTION:
●Do not reuse the copper washer for union bolts.
●Securely assemble brake hose to protrusions on cylinder body.
4. Bleed air. Refer to BR-10, "
Bleeding Brake System" .
Caliper Disassembly and AssemblyEFS00181
DISASSEMBLY
WARNING:
Be careful not to pinch your fingers in the piston.
CAUTION:
Be careful not to damage the cylinder inner wall.
1. Remove caliper assembly from vehicle.
2. Remove sliding pin from cylinder body. Then remove pads, shims, shim covers, and pad retainers from
caliper assembly.
3. Remove sliding pin boots from torque member.
4. Using flat-bladed screwdriver (as shown in the figure), remove
retaining ring.
SFIA0143E
SBR028A

REAR DISC BRAKE
BR-31
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4. Fix piston boot with retaining ring.
CAUTION:
●Be sure boot is securely engaged in groove on cylinder
body.
●Do not reuse retaining ring.
5. Connect sliding pins and sliding pin boots to torque member.
6. Connect torque member to axle assembly and tighten mounting
bolts to specified torque.
CAUTION:
Wipe oil and grease on axle assembly washer seats and torque
member mounting surface. Install torque member to axle
assembly.
7. Connect pads, pad retainers, shims, and shim covers to torque member and assemble cylinder body.
8. Tighten sliding pin bolts to the specified torque.
9. Connect brake hose to caliper assembly and tighten union bolts to the specified torque.
CAUTION:
Do not reuse union bolt copper washer.
10. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to BR-10, "
Bleeding Brake
System"
SFIA0158E