2003 SUZUKI GRAND VITARA spring

YH4
GRAND
VITARA
3. LSPV stay
1. Master cylinder
2. Disconnect brake pipe1. LSPV lever
2. LSPV spring
3, ªAº 2
1
2(a)
ªaº
ªbº
5-14 BRAKES
3) Depress brake pedal gradually till fluid pressure of front brake
becomes as specified below and check corresponding pressure
of rear brake then. It should be within specification given below.
Front brake
Rear brake
8,000 kPa
80 kg / cm2
3 Door
6,000 ± 7,300 kPa
60 ± 73 kg / cm2
853 ± 1,038 psi80 kg / cm2
1,138 psi5 Door
4,500 ± 7,300 kPa
45 ± 73 kg / cm2
640 ± 1,038 psi
As done above, apply 100 kg / cm2 pressure to front brake and
check that rear brake pressure then is within specification as giv-
en below.
Front brake
Rear brake
10,000 kPa
100 kg / cm2
3 Door
6,500 ± 8,000 kPa
65 ± 80 kg / cm2
924 ± 1,138 psi100 kg / cm2
1,422 psi5 Door
5,000 ± 8,000 kPa
50 ± 80 kg / cm2
711 ± 1,138 psi
4) If rear brake pressure is not within specification, adjust it by
changing stay ªAº position as follows.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)

If rear brake pressure is higher than specification, move stay
ªAº to direction ªaº and if it is lower, to direction ªbº.

Repeat steps 3) and 4) until rear brake pressure is within spec-
ification.

After adjustment, be sure to torque bolt to specification.
5) Disconnect brake pipe (connecting between master cylinder
secondary side and 4-way joint) from master cylinder.
Tighten plug (special tool) to master cylinder.
Depress brake pedal. If rear brake pressure is 95 ± 100 kg / cm
2
when front brake pressure is 100 kg / cm2, it means that front fail-
safe system functions properly.
Front brake
Rear brake
10000 kPa
100 kg / cm2
1422 psi
9500 ± 10000 kPa
95 ± 100 kg / cm2
1350 ± 1422 psi
Special Tool
(A): 09956-02210

YH4
GRAND
VITARA
BRAKES 5-17
TIGHTENING TORQUE SPECIFICATIONS
FasteningpartsTightening torqueFastening artsN.mkg-mlb-ft
Brake pipe 2-way (or 4-way) joint bolt232.317.0
Brake pipe flare nut161.611.5
Front caliperM88.00.86.0
Brake bleederplug
Front cali erM108.50.856.5Brake bleeder lugWheel cylinder7.50.755.5
LSPV7.50.755.5
LSPV mounting bolt
LSPV stay bolt232.317.0
LSPV spring nut
Wheel nut10010.072.5
Stop light switch lock nut7.50.755.5
REQUIRED SERVICE MATERIAL
MATERIALSRECOMMENDED
SUZUKI PRODUCTUSE
Brake fluid
Indicated on reservoir
cap or described in owner's
manual of vehicle
To fill master cylinder reservoir.

To clean and apply to inner parts of master
cylinder caliper and wheel cylinder when
they are disassembled.

YH4
GRAND
VITARA
[A]: With ABS
[B]: Without ABS
1. Piston stopper circlip
2. Piston stopper
3. Cylinder cup
4. Plate
5. Primary piston
6. Piston cup
7. Primary piston return spring
8. Primary spring retainer
9. Secondary piston pressure cup
10. Secondary piston
11. Return spring secondary seat
12. Secondary piston return spring
13. Secondary piston stopper bolt
14. Master cylinder body
ªAº: Primary piston
ªBº: Secondary piston
[B] [A]
5A-2 BRAKES PIPE / HOSE / MASTER CYLINDER
GENERAL DESCRIPTION
MASTER CYLINDER ASSEMBLY
The master cylinder has two pistons and three piston cups. Its hydraulic pressure is produced in the primary (ªaº
in the figure below) and secondary (ªbº) chambers. The hydraulic pressure produced in the primary chamber (ªaº)
acts on the front (for vehicle without ABS, rear) wheel brakes.
Also, the hydraulic pressure produced in the secondary chamber (ªbº) acts on the rear (for vehicle without ABS,
front) wheel brakes.
NOTE:
Replace all components included in repair kits to service this master cylinder. Lubricate rubber parts with
clean, fresh brake fluid to ease assembly. Do not use lubricated shop air on brake parts as damage to rub-
ber components may result. If any hydraulic component is removed or brake line disconnected, bleed the
brake system.
The torque values specified are for dry, unlubricated fasteners.
BOOSTER ASSEMBLY
The booster is located between the master cylinder and the brake pedal. It is so designed that the force created
when the brake pedal is depressed is mechanically increased combined with the engine vacuum.
The booster has two diaphragms of
ù7.5 in. (191 mm) effective diameter.
CAUTION:

Never disassemble brake booster assembly. If it is found faulty, replace it with new assembly.

The torque values specified are for dry, unlubricated fasteners. If any hydraulic component is re-
moved or brake line disconnected, bleed the brake system.

YH4
GRAND
VITARA
1. LSPV
2. LSPV lever
3. Spring
4. LSPV stay
5. Brake flare nut
[A]: Type A
[B]: Type B
1. Plunger
2. Lip seal
3. LSPV lever
4. Sensor spring
5. From master cylinder
primary chamber
(Rear wheel brake)
6. From master cylinder
secondary chamber
(Front wheel brake)
7. To rear wheel brake
8. Pin
9. Bolt hole
[A] [B]
44
BRAKES PIPE / HOSE / MASTER CYLINDER 5A-3
LSPV (Load Sensing Proportioning Valve) ASSEMBLY (if equipped)
As shown in figure below, LSPV is included within the brake circuit which connects the master cylinder and the rear
wheel brake. It controls the hydraulic pressure applied to the rear wheel brake according to the loaded state of the
vehicle (or weight of the load), whereby preventing the rear wheels from getting locked prematurely.
Also, it releases the above described control over the hydraulic pressure applied to the rear wheel brake, should
any failure occur in the hydraulic circuit of the front wheel brake so that the hydraulic pressure produced in the mas-
ter cylinder is applied to the rear wheel brake directly to operate it.
CONSTITUTION
The LSPV components are grouped into three sections as follows.
ªAº: Sensor section
The main parts in this section are a lever and a spring which senses variation in the vehicle height as affected
by the loaded condition and converts it into the load.
ªBº: Hydraulic pressure control section
Included in this section are a stepped plunger and valve mechanism to execute proportional control.
ªCº: Fail-safe section
The main parts in this section are a chamber which draws in the hydraulic pressure from the front wheel brake
system and a fail-safe piston which releases the valve mechanism in the control section connected to the rear
wheel brake, should any failure occur in the front wheel brake system.

YH4
GRAND
VITARA
1. LSPV
2. Brake pipe
1. LSPV assembly
2. LSPV spring
3. LSPV stay
4. Bolt
5. Stepper bole
BRAKES PIPE / HOSE / MASTER CYLINDER 5A-17
LSPV (Load Sensing Proportioning Valve)
ASSEMBLY (if equipped)
REMOVAL
1) Clean around reservoir cap and take out fluid with syringe or
such.
2) Hoist vehicle.
3) Disconnect brake pipes from LSPV.
4) Remove LSPV assembly with spring from vehicle body.
5) Remove spring from lever.
CAUTION:

LSPV assembly must not be disassembled.
Replace with new one if defective.

Stopper bolt should not be loosened or tightened. (if
equipped)
INSTALLATION
CAUTION:
Refer to above CAUTION.
Install by reversing removal procedure, noting the following.
1) Apply multi-purpose grease ªAº to upper and lower joint of coil
spring.

YH4
GRAND
VITARA
5A-18 BRAKES PIPE / HOSE / MASTER CYLINDER
1. LSPV spring bolt
2. LSPV bolt
3. Brake pipe flare nut
4. Air bleeding plug
1. LSPV lever
2. Stopper bolt (if equipped)
3. Coil spring ªAº: Don't turn(a)
2) Torque each bolt and nut to specification as indicated respec-
tively in figure.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
(b): 16 N
.m (1.6 kg-m, 11.5 lb-ft) (brake flare nut)
(c): 7.5 N
.m (0.75 kg-m, 9.0 lb-ft) (bleeder plug)
3) Upon completion of installation, fill reservoir tank with specified
fluid and bleed air from brake system.
NOTE:
Make sure to bleed air from LSPV bleeder without failure.
4) After bleeding air, check that LSPV is installed properly, referring
to following INSPECTION & ADJUSTMENT.
INSPECTION & ADJUSTMENT
Confirm the following before inspection and adjustment.

Fuel tank is filled with fuel fully.

Vehicle is equipped with spare tire, tools, jack and jack handle.

Vehicle is free from any other load.
With vehicle in above conditions;
1) Place it on level floor.
2) Push up (for 5 door model) or push down (for 3 door model)
LSPV lever with finger till it stops and measure length ªLº of coil
spring as it is pulled.
3) Spring length ªLº should be the value specified below.
Spring length (between spring end and spring bolt)
ªLº: 103 mm (4.06 in.) (5 door model). . . . .
ªLº: 157 mm (6.18 in.) (3 door model). . . . .
4) If it isn't, adjust it to specification by changing stay positions as
shown in figure. After adjustment, tighten bolt to specified
torque.
For details, refer to left figure.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
NOTE:
Check to make sure that LSPV body and brake pipe joints
are free from fluid leakage. Replace defective parts, if any.

YH4
GRAND
VITARA
BRAKES PIPE / HOSE / MASTER CYLINDER 5A-19
09922-85811
Connector pin remover09950-96010
Booster piston rod gauge09952-16010
Booster piston rod adjuster
TIGHTENING TORQUE SPECIFICATIONS
FasteningpartsTightening torqueFastening artsN.mkg-mlb-ft
Brake flexible hose bolt (Brake caliper / 2 (4) way joint)232.317.0
Master cylinder attaching nut131.39.5
Booster nut131.39.5
Clevis nut252.518
2-way (or 4-way) joint mounting bolt101.07.5
Brake pipe flare nut161.611.5
Front caliperM88.00.86.0
Brake bleederplug
Front cali erM108.50.856.5Brake bleeder lugWheel cylinder7.50.755.5
LSPV8.00.86.0
LSPV mounting bolt
LSPV stay bolt232.317.0
LSPV spring nut
Wheel nut10010.072.5
REQUIRED SERVICE MATERIAL
MATERIALSRECOMMENDED
SUZUKI PRODUCTUSE
Brake fluid
Indicated on reservoir
cap or described in owner's
manual of vehicle
To fill master cylinder reservoir.

To clean and apply to inner parts of master
cylinder caliper and wheel cylinder when
they are disassembled.
SPECIAL TOOLS

YH4
GRAND
VITARA
[A]: TOKICO produced
[B]: SUMITOMO ELECTRIC produced1. Caliper pin bolt
2. Boot
3. Disc brake caliper
(Disc brake cylinder)
4. Piston seal
5. Disc brake piston
6. Cylinder boot
7. Disc brake inner pad
8. Disc brake outer pad
9. Brake caliper carrier
10. Pad spring
11. Bleeder plug
12. Bleeder plug cap
13. Caliper pin
14. Anti noise shim
15. Inner shim
Tightening torque
(a): 8.5 N.m (0.85 kg-m, 6.5 lb-ft)
(b): 8.0 N.m (0.80 kg-m, 6.0 lb-ft) [A]
[B]
5B-2 FRONT BRAKE
GENERAL DESCRIPTION
DISC BRAKE CALIPER ASSEMBLY
This caliper is mounted to the brake caliper carrier with two caliper pin bolts. Hydraulic force, created by applying
force to the brake pedal, is converted by the caliper to friction. The hydraulic force acts equally against the piston
and the bottom of the caliper bore to move the piston outward and to move (slide) the caliper inward, resulting in
a clamping action on the disc. This clamping action forces the pads (linings against the disc, creating friction to
stop the vehicle.
NOTE:

Lubricate parts as specified. Do not use lubricated shop air on brake parts as damage to rubber compo-
nents may result. If any component is removed or line disconnected, bleed the brake system.
Replace pads in axle sets only. The torque values specified are for dry, unlubricated fasteners.

For identification of the brake caliper type, see maker name or mark on brake caliper as shown.