2002 NISSAN TERRANO brake pads

Supplement Restraint System (SRS) ªAIR BAGº
and ªSEAT BELT PRE-TENSIONERº
The Supplemental Restraint System ªAir Bagº and ªSeat Belt Pre-tensionerº, used along with a seat belt, help
to reduce the risk or severity or injury to the driver and front passenger in a collision. The Supplemental
Restraint System consists of an air bag module (located in the center of the steering wheel and on the instru-
ment panel on the passenger side, where fitted), seat belt pre-tensioners, a diagnosis sensor unit, warning
lamp, wiring harness and spiral cable. Information necessary to service the system safely is included in the
BT sectionof this Service Manual.
WARNING:
ITo 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 dealer.
IImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
IDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses (except ªSEAT BELT-TENSIONERº connector) can be iden-
tified with yellow harness connector and with yellow harness protector or yellow insulation tape
before the harness connectors.
Precautions
IUse only ªDOT 4º fluid from a sealed container.
INever reuse drained brake fluid.
IBe 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.
ITo clean master cylinder parts, disc brake caliper parts or
wheel cylinder parts, use clean brake fluid.
INever use mineral oils such as Petrol or kerosene. They
will ruin rubber parts of hydraulic system.
IUse flare nut wrench when removing and installing brake
tubes.
IAlways torque brake lines when installing.
IBurnish 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 speed. Refer to ªBrake
Burnishing Procedureº, ªCheck and Adjustmentº, BR-5.
WARNING:
IClean brakes with a vacuum dust collector to minimize risk
of health hazard from airborne materials.
IAvoid prolonged and repeated skin contact with brake
fluid.
IWear protective clothing, including impervious gloves.
IWhere there is a risk of eye contact, eye protection should
be worn Ð for example chemical goggles or face shield.
YBR293
PRECAUTIONS AND PREPARATION
BR-3

Checking Brake Fluid Level
ICheck fluid level in reservoir tank. It should be between Max.
and Min. lines on reservoir tank.
IIf fluid level is extremely low, check brake system for leaks.
IWhen brake warning lamp comes on even when parking brake
lever is released, check brake system for leaks.
Checking Brake Line
CAUTION:
If leakage occurs around joints, retighten or, if necessary,
replace damaged parts.
1. Check brake lines (tubes and hoses) for cracks, deterioration
or other damage. Replace any damaged parts.
2. Check for oil leakage by fully depressing brake pedal while
engine is running.
Changing Brake Fluid
CAUTION:
IRefill with new brake fluid ªDOT 4º.
INever reuse drained brake fluid.
IBe 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 RUB IT OFF.
1. Connect a vinyl tube to each air bleeder valve.
2. Drain brake fluid from each air bleeder valve by depressing
brake pedal.
3. Refill until new brake fluid comes out of each air bleeder valve.
Use same procedure as in bleeding hydraulic system to refill
brake fluid. Refer to ªBleeding Brake Systemº, ªBRAKE
HYDRAULIC LINEº, BR-8.
Brake Burnishing Procedure
Burnish the brake contact surfaces according to the following pro-
cedure after refinishing or replacing rotors or drums, after replac-
ing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:
Only perform this procedure under safe road and traffic con-
ditions. Use extreme caution.
1. Drive the vehicle on a straight smooth road at 50 km/h (31
MPH).
2. Use medium brake pedal/foot to bring the vehicle to a com-
plete 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 for 10 times or more to complete the
burnishing procedure.
SBR849B
SMA732A
SBR992
CHECK AND ADJUSTMENT
BR-5

Inspection and Adjustment
CAUTION:
ICheck level in brake fluid reservoir.
IRefill with recommended brake fluid ªDOT 4º.
INever reuse drained brake fluid.
IBe 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 RUB IT OFF.
1. Before adjusting load sensing valve spring length, check for
proper installation and abnormal wear of brake pads and
shoes.
2. Remove the air bleeder from the wheel caliper, and install a
pressure gauge (A) to the bleed valve hole.
3. Bleed the air from the front brake piping.
4. Remove the air bleed valve from the rear wheel cylinder, and
install a pressure gauge (B) to the bleed valve hole.
EBR019
EBR020
EBR021
LOAD SENSING VALVE
BR-12

3. Swing cylinder body upward. Then remove pad and anti-noise
shims.
CAUTION:
IWhen cylinder body is swung up, do not depress brake
pedal because piston will pop out.
IEnsure that brake fluid does not come into contact with
dustcover and rotor.
IBe careful not to twist brake hoses.
Brake pad thickness (new):
10 mm (0.39 in)
Wear limit (min. thickness):
2 mm (0.08 in)
IAfter installing new brake pads, check brake fluid level at
brake fluid reservoir.
Removal
IRemove torque member fixing bolts and union bolt.
Disassembly
Push out piston with dust cover with compressed air.
Use a wooden block so that the 2 pistons come out evenly.
CAUTION:
IWear protecting clothes and safety goggles.
IDo not hold your fingers in front of the pistons.
IBe careful not to scratch piston and/or cylinder faces.
Inspection
INSPECTION OF BRAKE DRAG FORCE
ªResidual pairº describes the friction pressure of the disc brake
shoes against the disc when the brake pedal is not applied.
1. Swing cylinder body upward.
2. Make sure that wheel bearing is adjusted properly. Refer to
section FA.
3. Measure rotating force (F
1).
NBR207
SBR012C
SBR085A
SBR168A
FRONT DISC BRAKE
Pad Replacement (Cont'd)
BR-27

4. Install caliper with pads to the original position.
5. Depress brake pedal for 5 seconds.
6. Release brake pedal, rotate disc rotor 10 revolutions.
7. Measure rotating force (F
2).
8. Calculate brake drag force by subtracting F
1from F2.
Maximum brake drag force (F
2ÐF1):
103.0 N (10.5 kg, 23.2 lb)
If it is not within specification, check pins and pin boots in
caliper.
IMake sure that wheel bearing is adjusted properly.
IDisc pads and disc rotor must be dry.
DISC PAD
Check disc pad for wear or damage.
Pad wear limit (A):
2.0 mm (0.079 in)
Assembly
Fit new piston seals.
Lightly apply clean brake fluid ªDOT 4º to piston outer face.
1. Insert piston seal into groove on cylinder body.
2. Install piston into cylinder body.
3. Install piston boot and secure properly.
Inspection
CYLINDER BODY
ICheck inside surface of cylinder for score, rust, wear, damage
or presence of foreign materials. If any of the above conditions
are observed, replace cylinder body.
IMinor damage from rust or foreign materials may be eliminated
by polishing the surface with a fine emery paper. Replace cyl-
inder body if necessary.
CAUTION:
Use brake fluid to clean. Never use mineral oil.
SBR130A
SBR041A
SMA364A
NBR007
SBR574
FRONT DISC BRAKE
Inspection (Cont'd)
BR-28

Preliminary Check
Check brake fluid level in reservoir
tank.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Low fluid level may indicate brake pad
wear or leakage from brake line.
Check brake line for leakage.
OKENG
Repair.
F
Check brake booster for operation and air
tightness. Refer to BR-14.
OK
ENG
Replace.
F
Check brake pads, rotor and drums.
OKENG
Replace.
Check brake fluid level in reservoir tank.
OKENG
Fill up brake fluid.
Check warning lamp(s) or warning sound
activation.
When ignition switch is turned on, warning
lamp(s) turn(s) on.
OK
ENG
Check fuse, warning lamp
bulb and warning lamp cir-
cuit.
Check warning lamp(s) for deactivation
after engine is started.
OK
ENG
Go to Self-diagnosis,
BR-59.
Drive vehicle at speeds over 30 km/h (19
MPH) for at least one minute.
Ensure warning lamp(s) remain(s) off
while driving.
OK
ENG
Go to Self-diagnosis,
BR-59.
END
SBR451D
SBR389C
SBR058C
SBR059C
YBR266
H
H
H
H
H
H
H
H
H
TROUBLE DIAGNOSES
BR-65

3. Tighten wheel bearing lock nut with Tool.
:78-98N×m
(8 - 10 kg-m, 58 - 72 ft-lb)
4. Turn wheel hub several times in both directions.
5. Loosen wheel bearing lock nut so that torque becomes 0 N×m
(0 kg-m, 0 ft-lb).
6. Retighten wheel bearing lock nut with Tool.
: 0.5 - 1.5 N×m
(0.05 - 0.15 kg-m,4-13in-lb)
7. Turn wheel hub several times in both directions.
8. Retighten wheel bearing lock nut with Tool.
: 0.5 - 1.5 N×m
(0.05 - 0.15 kg-m,4-13in-lb)
9. Measure wheel bearing axial end play.
Axial end play:
0mm(0in)
10. Measure starting force ªAº at wheel hub bolt when moving the
hub by 90É as shown.
11. Install lock washer by tightening the lock nut within 15 to 30
degrees.
12. Turn wheel hub several times in both directions to seat wheel
bearing correctly.
13. Measure starting force ªBº at wheel hub bolt. Refer to proce-
dure 10.
14. Wheel bearing preload ªCº can be calculated as shown below.
C=BþA
Wheel bearing preload ªCº:
7.06 - 20.99 N
(0.72 - 2.14 kg, 1.59 - 4.72 lb)
15. Repeat above procedures until correct axial end play and wheel
bearing preload are obtained.
16. Install free-running hub and brake pads.
YFA009
SFA892
YFA004
SFA830
CHECK AND ADJUSTMENT
Front Wheel Bearing (Cont'd)
FA-7

Chassis and Body Maintenance
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary L = Lubricate T = Tighten
[ ] = At the specified mileage only
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Refer-
ence
page Perform on a kilometer basis, but on
a semi-annual basis when driving
less than 20,000 km (12,000 miles)
per year.km x 1,000 10 20 30 40 50 60 70 80 90 100 110 120
(miles x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54) (60) (66) (72)
Months 6 12 18 24 30 36 42 48 54 50 66 72
Underhood and under vehicle
Headlamp aimingIIIIIIEL-37
Wheel alignment (if necessary, rotate & balance wheels)IIIIIIMA-43
Brake pads, discs & other components*IIIIIIMA-40
Brake linings, drums & other components*IIIIIIMA-41
Foot brake, parking brake & clutch (for free play, stroke &
operation)IIIIIIMA-42
Brake booster vacuum hoses, connections, check valve I I I MA-40
Brake & clutch, systems and fluid (for level and leaks)IIIIIIMA-36/
MA-40
Brake fluid*R R R MA-43
Power steering fluid and lines (for level and leaks)IIIIIIMA-44
Air bag system See NOTE (1)RS-15
Ventilation air filter*RRRRMA-44
Transfer and standard differential gear oil* I I R I I RMA-37/
MA-38
Manual transmission oil I I I [R] I I MA-36
LSD gear oil (for level and leaks)* I I R I I R MA-38
Steering gear & linkage, axle & suspension parts, propeller
shaft and exhaust system*IIIIIIMA-43/
FA-4/
RA-4/
MA-38/
MA-36
Greasing points of steering gear linkage,
propeller shaft and suspension*See NOTE (2)LLLLLLMA-44/
MA-38
Drive shafts*IIIIIIFA-13
Front wheel bearing grease*IRIRIRMA-39
Free running hub grease*IIIIIIMA-40
Body mounting bolts and nutsTTTTTTBT-48
Body corrosion See NOTE (3)MA-47
NOTE: (1) Inspect after 10 years, then every 2 years.
(2) The propeller shaft should be re-greased daily if it is immersed in water.
(3) Inspect once per year.
* Maintenance items with ª*º should be performed more frequently according to ªMaintenance under severe driving
conditionsº.
PERIODIC MAINTENANCE
Maintenance Schedule for Diesel Engine
Models (annual mileage < 30,000 km/year)
(Cont'd)
MA-7