Nissan Terrano model r20 series 2004. Instruction — part 295
Removal and Installation
NBR312
LOAD SENSING VALVE
BR-10
Removal
CAUTION:
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.
I
Remove flare nuts and LSV bolts.
Installation
CAUTION:
I
Refill with new brake fluid “DOT 4”.
I
Never reuse drained brake fluid.
I
Check level in brake fluid reservoir.
1. Tighten provisionally flare nuts.
2. Tighten LSV bolts.
: 20 - 24 N
⋅
m (2.0 - 2.4 kg-m, 14 - 17 ft-lb)
3. Tighten flare nuts.
: 15 - 18 N
⋅
m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
4. Bleed air. Refer to “Bleeding Brake System”, “BRAKE
HYDRAULIC LINE”, BR-8.
5. Adjust load sensing valve (LSV). Refer to “Inspection and
Adjustment”, “LOAD SENSING VALVE”, BR-12.
YBR293
LOAD SENSING VALVE
BR-11
Inspection and Adjustment
CAUTION:
I
Check level in brake fluid reservoir.
I
Refill with recommended brake fluid “DOT 4”.
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
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 and
engine 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 “L”.
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 “L”
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/cm
2
, 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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