Downloaded from www.Manualslib.com manuals search engine BRAKES 5-1
6F1
6F2
6G
6H
6K
7A
7A1
7B1
7C1
7D
7E
5
9
10
10A
10B
9
10
10A
10B
SECTION 5
BRAKES
CONTENTS
General Description ......................................... 5-3
Diagnosis .......................................................... 5-4
Road Testing Brakes ...................................... 5-4
Brake Fluid Leaks .......................................... 5-4
Substandard or Contaminated Brake Fluid .... 5-4
Diagnosis Table ............................................. 5-5
Brake Pedal Free Height Adjustment ............. 5-8
Brake Pedal Play Check ................................ 5-8
Stop Light Switch Adjustment ........................ 5-8
Excessive Pedal Travel Check ....................... 5-9
Front Brake Disc Check ................................. 5-9
Front Brake Pad Check .................................. 5-9
Rear Brake Shoe Check .............................. 5-10
Master Cylinder and Brake Fluid Level
Check ........................................................... 5-10
Rear Drum Brake Shoe Adjustment ............. 5-11
Parking Brake Inspection and Adjustment ... 5-11
Booster Operation Check ............................. 5-12Fluid Pressure Test
(If Equipped with LSPV) ............................... 5-15
On-Vehicle Service ........................................ 5-17
Air Bleeding of Brake System ...................... 5-17
Brake Hose and Pipe Inspection.................. 5-18
Front Disc Brake .......................................... 5-19
Brake pad ................................................. 5-20
Caliper assembly...................................... 5-22
Brake Disc.................................................... 5-26
Rear Brake ................................................... 5-29
Brake drum............................................... 5-29
Brake shoe ............................................... 5-32
Wheel Cylinder............................................. 5-33
Brake back plate ...................................... 5-34
Master Cylinder .............................................. 5-36
Master Cylinder Reservoir ........................... 5-36
Master Cylinder Assembly ........................... 5-37 WARNING:
For lifting point of vehicle, refer to Section 0A.
WARNING:
For vehicles equipped with Supplement Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
When inspecting and servicing vehicle equipped with ABS, be sure to refer to section 5E first.
All brake fasteners are important attaching parts in that they could affect the performance of vital
parts and systems, and/or could result in major repair expense. They must be replaced with one of
same part number or with an equivalent part if replacement becomes necessary. Do not use a
replacement part of lesser quality or substitute design. Torque values must be used as specified
during reassembly to assure proper retention of all parts. There is to be no welding as it may result
in extensive damage and weakening of the metal.
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General Description
When the foot brake pedal is depressed, hydraulic pressure is developed in the master cylinder to actuate pis-
tons (two in front and four in rear).
The master cylinder is a tandem master cylinder. Three (or two) brake pipes are connected to the master cylin-
der and they make two independent circuits. One connects front brakes (right and left) and the other connects
rear brakes (right and left).
The load sensing proportioning valve (LSPV), the proportioning and bypass (P & B) valve or proportioning (P)
valve is included in these circuits between the master cylinder and the rear brake.
In this brake system, the disc brake type is used for the front wheel brake and a drum brake type (leading/trailing
shoes) for the rear wheel brake.
The parking brake system is mechanical. It applies brake force to only rear wheels by means of the cable and
mechanical linkage system. The same brake shoes are used for both parking and foot brakes.
NOTE:
The figures shows left-hand steering vehicle.
WARNING:
If any hydraulic component is removed or brake line disconnected, bleed the brake system. The
torque values specified are for dry, unlubricated fasteners.
[A] : Vehicle without ABS, LSPV 1. Master cylinder 4. P & B valve F: Forward
[B] : Vehicle with LSPV 2. 5-way joint (4-way joint) 5. P (Proportioning) valve
[C] : Vehicle with ABS 3. LSPV (Load Sensing Proportion-
ing valve)6. Hydraulic Unit
Downloaded from www.Manualslib.com manuals search engine BRAKES 5-5
Diagnosis Table
Condition Possible Cause Correction
Not enough braking
forceBrake oil leakage from brake lines Locate leaking point and repair.
Brake disc or pads stained with oil Clean or replace.
Overheated brakes Determine cause and repair.
Poor contact of shoes on brake drum Repair for proper contact.
Brake shoes linings stained with oil or wet with
waterReplace.
Badly worn brake shoe linings Replace.
Defective wheel cylinders Repair or replace.
Malfunctioning caliper assembly Repair or replace.
Air in system Bleed system.
Maladjusted sensor spring length of LSPV Check or adjust.
Broken sensor spring of LSPV Replace.
Defective collar of LSPV Replace.
Malfunctioning ABS (Antilock brake system), if
equippedCheck system and replace as nec-
essary.
Brake pull (Brakes not
working in unison)Pad or shoe linings are wet with water or
stained with oil in some brakesReplace.
Drum-to-shoe clearance out of adjustment in
some brakes (Malfunctioning auto adjusting
mechanism)Check for inoperative auto adjusting
mechanism.
Drum is out of round in some brakes Replace.
Wheel tires are inflated unequally Inflate equally.
Malfunctioning wheel cylinders Repair or replace.
Disturbed front wheel alignment Adjust as prescribed.
Unmatched tires on same axle Tires with approximately the same
amount of tread should be used on
the same axle.
Restricted brake tubes or hoses Check for soft hoses and damaged
lines.
Replace with new hoses and new
double-walled steel brake tubing.
Malfunctioning caliper assembly Check for stuck or sluggish pistons
and proper lubrication of caliper
slide bush.
Loose suspension parts Caliper should slide.
Check all suspension mountings.
Loose calipers Check and torque bolts to specifica-
tions.
Noise (high pitched
squeak without brake
applied)Front lining worn out Replace brake pads.
Rear brake locked pre-
maturelyMaladjusted sensor spring length of LSPV Check or adjust.
Malfunctioning LSPV assembly Replace assembly.
Brake locked
(For vehicles
equipped with ABS)Malfunctioning ABS, if equipped Check system and replace as nec-
essary.
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4) When fluid pressure in the cylinder is almost depleted,
retighten bleeder plug.
5) Repeat this operation until there are no more air bubbles in
hydraulic line.
6) When bubbles stop, depress and hold brake pedal and
tighten bleeder plug.
Tightening torque
Front caliper bleeder plug
(b) : 11 N·m (1.1 kg-m, 8.0 lb-ft)
Rear wheel cylinder and LSPV bleeder plug
(c) : 8 N·m (0.8 kg-m, 6.0 lb-ft)
7) Then attach bleeder plug cap.
8) After completing bleeding operation, apply fluid pressure to
pipe line and check for leakage.
9) Replenish fluid into reservoir up to specified level.
10) Check brake pedal for “sponginess”. If found spongy, repeat
entire procedure of bleeding.
Brake Hose and Pipe Inspection
HOSE
The brake hose assembly should be checked for road hazard
damage, for cracks and chafing of the outer cover, for leaks and
blisters. A light and mirror may be needed for an adequate inspec-
tion. If any of the above conditions are observed on the brake
hose, it is necessary to replace it.
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INSTALLATION
1) Install pad shim (1) (to outside pad) and pads (2) to caliper
carrier (3).
2) Install caliper and torque caliper pin bolts (1) to specification.
Tightening torque
Brake caliper pin bolts
(a) : 22 N·m (2.2 kg-m, 16.0 Ib-ft)
3) Install wheel and torque front wheel nuts to specification.
Tightening torque
Wheel nuts
(a) : 95 N·m (9.5 kg-m, 69.0 lb-ft)
4) Upon completion of installation, perform brake test.NOTE:
See NOTE at the beginning of this section.
NOTE:
Make sure that boots are fit into groove securely.
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3) Install brake flexible hose (4) as shown and torque hose
mounting bolt (3) to specification.
Tightening torque
Front brake flexible hose bolt
(a) : 23 N·m (2.3 kg-m, 17.0 lb-ft)
4) Install wheel and torque wheel nuts to specification.
5) After completing installation, fill reservoir with brake fluid and
bleed brake system. Perform brake test and check each
installed part for oil leakage.
Brake Disc
REMOVAL
1) Hoist vehicle and remove wheel.
2) Remove caliper assembly by loosening carrier bolts (2 pcs).
3) Pull brake disc off by using 8 mm bolts (1) (2 pcs).
1. Brake caliper
2. Washer
CAUTION:
During removal, be careful not to damage brake flexible
hose and not to depress brake pedal.
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INSPECTION
Check disc surface for scratches in wearing parts. Scratches on
disc surface noticed at the time of specified inspection or replace-
ment are normal and disc is not defective unless they are serious.
But when there are deep scratches or scratches all over disc sur-
face, replace it. When only one side is scratched, polish and cor-
rect that side.
Brake disc thickness “a”
Standard : 10 mm (0.394 in.)
Limit : 8.0 mm (0.315 in.)
Use wheel nuts (1) and suitable plain washers (2) to hold the disc
securely against the hub, then mount a dial indicator as shown
and measure the runout at 10 mm (0.39 in.) from the outer edge
of the disc.
Disk deflection
Limit : 0.15 mm (0.006 in.)
INSTALLATION
1) Install disc to wheel hub.
2) Install caliper assembly to steering knuckle.
3) Torque caliper carrier bolts to specification.
Tightening torque
Brake caliper carrier bolts
(a) : 85 N·m (8.5 kg-m, 61.5 lb-ft)
4) Install wheel and torque front wheel nuts to specification.
5) Upon completion of installation, perform brake test.
NOTE:
Check front wheel bearing for looseness before measure-
ment.
NOTE:
See NOTE at the beginning of this section.
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Rear Brake
Brake drum
REMOVAL
1) Hoist vehicle and pull up parking brake lever.
2) Remove wheel.
3) Release parking brake lever.
4) Loosen parking brake cable adjusting nut (1).
1. Brake back plate 5. Shoe return spring lower 9. Shoe hold down pin
2. Brake shoe 6. Adjuster lever 10. Wheel cylinder
: Apply brake fluid to piston cap
3. Spring and rod assembly 7. Adjuster spring Tightening torque
4. Parking brake shoe lever 8. Shoe hold down spring