2004 NISSAN TERRANO Service Repair Manual

Removal and Installation
NBR312
LOAD SENSING VALVE
BR-10
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Removal
CAUTION:
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.
I Remove flare nuts and LSV bolts.
Installation
CAUTION:
IRefill with new brake fluid ªDOT 4º.
I Never reuse drained brake fluid.
I Check level in brake fluid reservoir.
1. Tighten provisionally flare nuts.
2. Tighten LSV bolts.
:20-24N ×m (2.0 - 2.4 kg-m, 14 - 17 ft-lb)
3. Tighten flare nuts.
:15-18N ×m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
4. Bleed air. Refer to ªBleeding Brake Systemº, ªBRAKE HYDRAULIC LINEº, BR-8.
5. Adjust load sensing valve (LSV). Refer to ªInspection and Adjustmentº, ªLOAD SENSING VALVEº, BR-12.
YBR293
LOAD SENSING VALVE
BR-11
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Inspection and Adjustment
CAUTION:
ICheck level in brake fluid reservoir.
I Refill with recommended brake fluid ªDOT 4º.
I Never reuse drained brake fluid.
I 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 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
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5. Bleed the air from the rear brake piping.
6. To adjust the LSV correctly, proceed as follows:
a. With unladen vehicle (12 liters of fuel, radiator coolant andengine oil are full). Spare tire, hand tools and mats in desig-
nated positions. Ensure all doors are closed and no one is
inside of the car. Check the length of LSV spring ªLº.
b. If the spring length is different from that specified, move the regulation lever (2) until the specified value is obtained. Move
the LSV lever (1) until it contacts the stopper bolt and recheck
the spring length.Sensor spring length ªLº Hardtop: 211 mm (8.31 in)
Wagon: 209 mm (8.23 in)
NOTE: Do not disturb stopper bolt.
c. Start the engine and run it at idling speed.
d. Slowly depress the brake pedal until an input pressure of 4,805 kPa (48.1 bar, 49 kg/cm
2, 697 psi) is obtained (at the front axle
pressure gauge) and an output pressure of 1,736 - 2,501 kPa
(18 - 26 bar, 17.7 - 25.5 kg/cm
2, 252 - 363 psi) is obtained (at
the rear axle pressure gauge).
If the output pressure at the rear axle pressure gauge is not within
the specified values, adjust LSV spring length as described under
b) until the output pressure measured is within the specified range.
Unit: kPa (bar, kg/cm2, psi)
Front axle* 4,805 (48.1, 49.0, 697)
Rear axle* 1,736 - 2,501 (18 - 26, 17.7 - 25.5, 252 - 363)
* Load conditions as indicated under 6.a, driver seat occupied.
EBR022
NBR313
EBR026
LOAD SENSING VALVE
Inspection and Adjustment (Cont'd)
BR-13
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Removal and Installation
YBR446
BRAKE PEDAL AND BRACKET
BR-14
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Removal
1. Remove stop lamp switch connector and stop lamp switch.
2. Remove bolt for (LHD) or nut for (RHD) securing pedal bracketto the front panel.
3. Remove snap ring and pull clevis pin from the brake pedal.
4. Remove 4 mounting nuts securing pedal bracket to the brake booster.
Installation
Install pedal bracket in the reverse order of the removal.
NOTE:
Pay attention to the direction of the clevis pin for installation.
Inspection
Check brake pedal for following items:
IBrake pedal bend
I Clevis pin deformation
I Crack of any welded portion
I Crack or deformation of clevis pin stopper
SBR997
BRAKE PEDAL AND BRACKET
BR-15
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Adjustment
Check brake pedal free height from dash reinforcement panel.H: Free heightRefer to SDS, BR-86.
D: Full stroke Refer to SDS, BR-86.
C: Clearance between pedal stopper and threaded end of stop lamp switch0.3 - 1.0 mm (0.012 - 0.039 in)
A: Pedal free play 1.0 - 3.0 mm (0.039 - 0.118 in)
If necessary, adjust brake pedal free height.
1. Loosen lock nut and adjust pedal free height by turning brake booster input rod. Then tighten lock nut.
Make sure that tip of input rod stays inside of clevis as shown.
2. Loosen lock nut and adjust clearance ªCº with stop lamp switch. Then tighten lock nuts.
3. Check pedal free play.
Make sure that stop lamps go off when pedal is released.
4. Check brake system for leaks, accumulation of air or any dam- age to components (master cylinder, etc.); then make neces-
sary repairs.
5. After installation and adjustment, operate the brake pedal to full stroke several times to confirm that strange sound interference
hitching or other do not arise working smoothly throughout the
stroke.
YBR450
YBR300
BRAKE PEDAL AND BRACKET
BR-16
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Removal
CAUTION:
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 RUB.
1. Connect a vinyl tube to air bleeder valve.
2. Drain brake fluid from each air bleeder valve, depressing brakepedal to empty fluid from master cylinder.
3. Remove brake pipe flare nuts.
4. Remove master cylinder mounting nuts.
5. Remove protector of master cylinder, and avoid scratching the surface of master cylinder during removal.
CAUTION:
Do not disassemble master cylinder.
NOTE:
If it is necessary to change the brake fluid reservoir, remove it
as shown in the illustration on the left, while holding the seals
with one hand.
It is not necessary to replace the seals if they are in a good
condition.
Installation
CAUTION:
I Refill with new brake fluid ªDOT 4º.
I Never reuse drained brake fluid.
1. Place master cylinder onto brake booster and secure mounting nuts lightly.
2. Fit flare nuts to master cylinder.
3. Tighten mounting nuts.
:21-29N ×m (2.1 - 3.0 kg-m, 15 - 22 ft-lb)
4. Tighten flare nuts.
:15-18N ×m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
5. Bleed air. Refer to ªBleeding Brake Systemº, ªBRAKE HYDRAULIC LINEº, BR-8.
YBR258
EBR080
MASTER CYLINDER
BR-17
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