brake system SUZUKI SWIFT 2000 1.G RG413 Service Owner's Manual

5-6 BRAKES
Excessive pedal travel
(Pedal stroke too
large)Partial brake system failure Check brake systems and repair as
necessary.
Insufficient fluid in master cylinder reservoirs Fill reservoirs with approved brake
fluid.
Check for leaks and air in brake
system.
Check warning light. Bleed system
if required.
Air in system (soft/spongy pedal) Bleed system.
Rear brake system not adjusted
(malfunctioning auto adjusting mechanism)Repair auto adjusting mechanism.
Adjust rear brakes.
Bent brake shoes Replace brake shoes.
Worn rear brake shoes Replace brake shoes.
Brake locked
(For vehicle equipped
with ABS)Malfunctioning ABS Check system referring to Section
5E1.
Dragging brakes
(A very light drag is
present in all brakes
immediately after
pedal is released)Master cylinder pistons not returning correctly Replace master cylinder.
Restricted brake pipes or hoses Check for soft hoses or damaged
pipes and replace with new hoses
and/or new double-walled steel
brake piping.
Incorrect parking brake adjustment on rear
brakesCheck and adjust to correct specifi-
cations.
Weakened or broken return springs in the brake Replace.
Sluggish parking brake cables or linkage Repair or replace.
Wheel cylinder or caliper piston sticking Repair as necessary.
Badly worn piston seal in caliper Replace piston seal.
Pedal pulsation
(Pedal pulsates when
depressed for brak-
ing)Damaged or loose wheel bearings Replace wheel bearings.
Distorted steering knuckle or rear wheel spindle Replace knuckle or rear wheel spin-
dle.
Excessive disc lateral runout Check per instructions. If not within
specifications, replace or machine
disc.
Parallelism between pad and disc not within
specificationsCheck per instructions. If not within
specifications, replace or machine
disc.
Rear drums out of round Check runout.
Repair or replace drum as neces-
sary.
Braking noise
Glazed shoe linings, or foreign matters stuck to
liningsRepair or replace shoe linings.
Worn or distorted shoe linings Replace shoe lining (or pad).
Loose front wheel bearings Replace wheel bearing.
Distorted backing plates or loose mounting
boltsReplace or retighten securing bolts.
Contact wear indicator to brake disc Replace pads. Condition Possible Cause Correction

BRAKES 5-7
Brake warning lamp
lights after engine
startParking brake applied Release parking brake and check
that brake warning lamp turns off.
Insufficient amount of brake fluid Add brake fluid.
Brake fluid leaking from brake line Investigate leaky point, correct it
and add brake fluid.
Brake warning lamp circuit faulty Repair circuit.
Malfunctioning EBD system, if equipped with
ABS.Check system referring to Table-E
of Section 5E1.
Brake warning lamp
turns on when brake
is appliedBrake fluid leaking from brake line Investigate leaky point, correct it
and add brake fluid.
Insufficient amount of brake fluid Add brake fluid.
Brake warning lamp
fails to turn on even
when parking brake is
appliedBrake warning lamp circuit faulty Replace bulb or repair circuit.
ABS warning lamp
turns on after engine
start (If equipped)Malfunctioning ABS Check system referring to DIAG-
NOSIS of Section 5E1.
ABS warning lamp
turns on when brake
is applied (If
equipped)Malfunctioning ABS Check system referring to DIAG-
NOSIS of Section 5E1.
ABS warning lamp
does not turn on for 2
sec. after ignition
switch has turned ONBulb burnt out Replace bulb.
Malfunctioning ABS Check system referring to DIAG-
NOSIS of Section 5E1.
ABS warning lamp
flashesNew ABS hydraulic unit/control module assem-
bly installed.Perform “ABS Hydraulic Unit Oper-
ation Check”. Condition Possible Cause Correction

BRAKES 5-9
EXCESSIVE PEDAL TRAVEL INSPECTION
1) Start engine.
2) Depress brake pedal a few times.
3) With brake pedal depressed with approximately 30 kg (66
lbs) load, measure brake pedal to wall (dash panel silencer)
clearance “a”.
If clearance “a” is less than specification, the most possible
cause is either rear brake shoes are worn out beyond limit or
air is in lines.
Should clearance “a” remain less than specification even
after replacement of brake shoes and bleeding of system,
other possible but infrequent cause is malfunction of rear
brake shoe adjusters or booster push rod length out of
adjustment.
–Bleed brake system. Refer to “AIR BLEEDING OF BRAKE
SYSTEM”.
–Remove brake drums for adjuster inspection. (Refer to
“REAR BRAKE”.) If defective, correct or replace.
Clearance “a” between brake pedal and dash panel
silencer
LH steering vehicle : over 135 mm (5.32 in.)
RH steering vehicle : over 140 mm (5.52 in.)
FRONT BRAKE PAD INSPECTION
Inspect pad linings (1) periodically according to maintenance
schedule whenever wheels are removed (for tire rotation or other
reason). Take a look through each end (or hole) of caliper and
check lining thickness of outside and inside pads.
If lining is worn and its thickness (“a” in figure) is less than limit, all
pads must be replaced at the same time.
Front brake pad thickness “a” (lining thickness)
Standard : 10 mm (0.40 in.)
Limit : 2 mm (0.08 in.)
BRAKE DISC INSPECTION
Refer to “BRAKE DISC” for inspection point and procedure.
“a”

5-10 BRAKES
PARKING BRAKE INSPECTION AND
ADJUSTMENT
INSPECTION
Hold center of parking brake lever grip and pull it up with 200 N
(20 kg, 44 lbs) force.
With parking brake lever pulled up as shown, count ratchet
notches. There should be 4 to 9 notches.
Also, check if both right and left rear wheels are locked firmly.
To count number of notches easily, listen to click sounds that
ratchet makes while pulling parking brake lever without pressing
its button.
One click sound corresponds to one notch.
If number of notches is out of specification, adjust cable referring
to adjustment procedure so as to obtain specified parking brake
store.
ADJUSTMENT
After confirming that above conditions are all satisfied, adjust
parking brake lever stoke by loosening or tightening adjust nut
(1).NOTE:
Check tooth tip of each notch for damage or wear.
If any damage or wear is found, replace parking brake
lever.
NOTE:
Make sure for the following conditions before cable
adjustment.
No air is trapped in brake system.
Brake pedal travel is proper.
Brake pedal has been depressed a few times with
about 100 N (10 kg, 22 lbs) load.
Parking brake lever is pulled up a few times with about
500 N (50 kg, 110 lbs) load.
Rear brake shoes are not worn beyond limit, and self
adjusting mechanism operates properly.
If parking brake lever stroke is less than specification,
loosen adjusting nut (1) as far as end of bolt. Then
depress brake pedal repeatedly with about 300 N (30
kg, 66 lbs) load until adjuster actuator clicking sound
can not be heard from drum brake.
NOTE:
Check brake drum for dragging after adjustment.

5-14 BRAKES
5) If rear brake pressure is not within specification, adjust it by
changing bolt (2) position as follows.
If rear brake pressure is higher than specification, move bolt
(2) center side and if it is lower, out side.
Repeat steps 3) and 4) until rear brake pressure is within
specification.
After adjustment, be sure to torque nut (1) to specification.
Tightening torque
LSPV nut (a) : 25 N·m (2.5 kg-m, 18.0 lb-ft)
6) Upon completion of fluid pressure test, bleed brake system
and perform brake test.
MASTER CYLINDER AND BRAKE FLUID
LEVEL INSPECTION
1) Check master cylinder and reservoir tank for crack, damage
and brake fluid leakage. If any faulty condition exists, correct
or replace.
2) Check that brake fluid level is between MAX and MIN marks
on reservoir tank.
2
1, (a)
NOTE:
Be sure to use particular brake fluid either as indicated
on reservoir cap of that vehicle or recommended in
owner’s manual which comes along with that vehicle.
Use of any other fluid is strictly prohibited.
Fluid level should be between MIN and MAX lines marked
on reservoir.
When brake warning lamp lights sometimes during driv-
ing, replenish fluid to MAX level.
When fluid decreases quickly, inspect brake system for
leakage. Correct leaky points and then refill to specified
level.
CAUTION:
Do not use shock absorber fluid or any other fluid which
contains mineral oil. Do not use a container which has
been used for mineral oil or a container which is wet from
water. Mineral oil will cause swelling and distortion of
rubber parts in hydraulic brake system and water mixed
into brake fluid will lower fluid boiling point. Keep all fluid
containers capped to prevent contamination.
MAX
MIN

BRAKES 5-15
BRAKE HOSE AND PIPE INSPECTION
HOSE
The brake hose assembly should be checked for road hazard
damage, for cracks and chafing of outer cover, for leaks and blis-
ters. A light and mirror may be needed for an adequate inspec-
tion. If any of above conditions are observed on brake hose, it is
necessary to replace it.
PIPE
Inspect the pipe for damage, cracks, dents and corrosion. If any
defect is found, replace it.
ON-VEHICLE SERVICE
AIR BLEEDING OF BRAKE SYSTEM
Bleeding operation is necessary to remove air whenever it
entered hydraulic brake system.
Hydraulic lines of brake system are based on the diagonal split
system. When a brake pipe or hose was disconnected at the
wheel, bleeding operation must be performed at both ends of the
line of the removed pipe or hose. When any joint part of the mas-
ter cylinder of other joint part between the master cylinder and
each brake (wheel) was removed, the hydraulic brake system
must be bled at all 4 wheel brakes.
CAUTION:
Brake fluid is extremely damaging to paint. If fluid should
accidentally touch painted surface, immediately wipe
fluid from paint and clean painted surface.
NOTE:
Perform bleeding operation starting with wheel cylinder
farthest from master cylinder and then at front caliper of
the same brake line. Do the same on the other brake line.
1. Right brake caliper 4. Left wheel cylinder
2. Left brake caliper A : FRONT
3. Right wheel cylinder B : REAR

BRAKES 5-23
4) Torque flexible hose joint bolt to specification.
Tightening torque
Flexible hose joint bolt (b) : 23 N·m (2.3 kg-m, 17.0 Ib-ft)
5) Install E-ring to strut securely.
6) Lower hoist.
7) Torque wheel nuts to specifications.
Tightening torque
Wheel nuts : 85 N·m (8.5 kg-m, 61.5 Ib-ft)
8) After completing installation, fill reservoir with brake fluid and
bleed air from 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 removing caliper carrier bolts
(2 pcs)
3) Pull brake disc off by using 8 mm bolts (1) (2 pcs).WARNING:
Make sure that flexible hose is not twisted when tighten-
ing joint bolt. If it is twisted, reconnect it using care not to
twist it.
CAUTION:
During removal, be careful not to damage brake flexible
hose and not to depress brake pedal.
NOTE:
Hang removed caliper with a wire hook or the like so as
to prevent brake hose from bending and twisting exces-
sively or being pulled.
Don’t operate brake pedal with brake pads removed.

BRAKES 5-31
INSTALLATION
1) Take off bleeder plug cap from brake pipe and connect pipe
to wheel cylinder (1) just enough to prevent fluid from leak-
ing.
2) Install wheel cylinder (1) to brake back plate (2) to specified
torque.
Tightening torque
Cylinder mounting bolts (a) : 10 N·m (1.0 kg-m, 7.5 lb-ft)
3) Tighten flare nut (3) of brake pipe to specified torque.
Tightening torque
Rear brake pipe flare nut (b) : 16 N·m (1.6 kg-m, 11.5 lb-ft)
4) Install bleeder plug cap.
5) Install brake shoes. (Refer to “BRAKE SHOE”.)
6) Install brake drum. (Refer to “BRAKE DRUM”.)
7) Fill reservoir with brake fluid and bleed brake system. (For
bleeding operation referring to “AIR BLEEDING OF BRAKE
SYSTEM”.)
8) Upon completion of all jobs, depress brake pedal with about
30 kg (66 lbs) load 3 to 5 times so as to obtain proper drum-
to-shoe clearance.
Adjust parking brake cable.
9) Install wheel and tighten wheel nuts to specified torque.
Tightening torque
Wheel nuts : 85 N·m (8.5 kg-m, 61.5 lb-ft)
10) Check to ensure that brake drum is free from dragging and
proper braking is obtained. Then remove vehicle from hoist
and perform brake test (foot brake and parking brake).
11) Check each installed part for oil leakage.
BRAKE BACK PLATE (FOR 2WD VEHICLE)
REMOVAL
1) Remove brake drum referring to “BRAKE DRUM”.
2) Remove brake shoe referring to “BRAKE SHOE”.
3) Remove wheel cylinder referring to “WHEEL CYLINDER”.
4) Remove parking brake cable securing clip (1) and discon-
nect brake cable (2) from brake back plate (3).

BRAKES 5-39
3) Remove push rod clevis pin (1).
4) Remove wiper motor. (For right-hand steering vehicle only)
5) Remove booster mounting nuts (2) and then booster.
INSTALLATION
1) Install booster (4) to dash panel. Then connect push rod cle-
vis (5) to pedal arm with clevis pin (2) and clip (6).
2) Tighten booster mounting nuts (3) to specified torque.
Tightening torque
Booster mounting nuts (a) : 13 N·m (1.3 kg-m, 9.5 lb-ft)
3) Install new master cylinder gasket to booster.
4) Install master cylinder (7) to booster and tighten mounting
nuts (8) to specified torque.
Tightening torque
Master cylinder mounting nuts (b) :
13 N·m (1.3 kg-m, 9.5 lb-ft)
5) Connect brake pipes and tighten flare nuts to specified
torque.
Tightening torque
Brake pipe flare nuts : 16 N·m (1.6 kg-m, 11.5 lb-ft)
6) Connect reservoir lead wire connector and booster vacuum
hose (1).
7) Fill reservoir with specified fluid.
8) Bleed air from brake system.
9) Perform brake test and check each installed part for fluid
leakage.
1
2
2
NOTE:
Adjust clearance between booster piston rod and mas-
ter cylinder piston. (Refer to “INSPECTION AND
ADJUSTEMENT” of “BRAKE BOOSTER”.)
Check length of push rod clevis.

BRAKES 5-41
BRAKE HOSE/PIPE
FRONT BRAKE HOSE/PIPE
REMOVAL
1) Raise and support vehicle properly. Remove tire and wheel.
2) Clean dirt and foreign material from both flexible hose end and pipe end fittings.
3) Remove brake flexible hose or pipe.
INSTALLATION
Reverse brake flexible hose installation procedure, noting the followings.
Make sure that steering wheel is in straight-forward position and flexible hose has not twist or kink.
Check to make sure that flexible hose doesn’t contact any part of suspension, both in extreme right and
extreme left turn conditions. If it does at any point, remove and correct. Fill and maintain brake fluid level in
reservoir.
Bleed brake system. Refer to “AIR BLEEDING OF BRAKE SYSTEM”.
Perform brake test and check installed part for fluid leakage. NOTE:
This operation is not necessary when removing pipes connecting master cylinder.