2005 SUZUKI JIMNY front

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Diagnosis
Road Testing Brakes
Brakes should be tested on dry, clean, smooth and reasonably level roadway which is not crowned. Road test
brakes by making brake applications with both light and heavy pedal forces at various speeds to determine if the
vehicle stops evenly and effectively.
Also drive vehicle to see if it leads to one side or the other without brake application. If it does, check the tire
pressure, front end alignment and front suspension attachments for looseness. See diagnosis table for other
causes.
Brake Fluid Leaks
Check the master cylinder fluid levels. While a slight drop in reservoir level does result from normal lining wear,
an abnormally low level indicates a leak in the system. In such a case, check the entire brake system for leak-
age. If even a slight evidence of leakage is noted, the cause should be corrected or defective parts should be
replaced.
If fluid level is lower than the minimum level of reservoir, refilling is necessary. Fill reservoir with specified brake
fluid.
Brake fluid: Refer to reservoir tank cap.
Substandard or Contaminated Brake Fluid
Improper brake fluid, mineral oil or water in the fluid may cause the brake fluid to boil or the rubber components
in the hydraulic system to deteriorate.
If primary piston cups are swollen, then rubber parts have deteriorated. This deterioration may also be evi-
denced by swollen wheel cylinder piston cups on the drum brake wheels.
If deterioration of rubber is evident, disassemble all hydraulic parts and wash with alcohol. Dry these parts with
compressed air before assembly to keep alcohol out of the system. Replace all rubber parts in the system,
including hoses. Also, when working on the brake mechanisms, check for fluid on the linings. If excessive fluid is
found, replace the linings.
If master cylinder piston seals are satisfactory, check for leakage or excessive heat conditions. If condition is not
found, drain fluid, flush with brake fluid, refill and bleed the system.
The system must be flushed if there is any doubt as to the grade of fluid in the system or if fluid has been used
which contained parts that have been subjected to contaminated fluid.CAUTION:
Since brake system of this vehicle is factory-filled with brake fluid indicated on reservoir tank cap, do
not use or mix different type of fluid when refilling; otherwise serious damage will occur.
Do not use old or used brake fluid, or any fluid from a unsealed container.

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.

Downloaded from www.Manualslib.com manuals search engine 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
systems.
Check warning light. Bleed system
if required.
Air in system (pedal soft/spongy) 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.
Dragging brakes (A
very light drag is
present in all disc
brakes immediately
after pedal is released)Master cylinder pistons not returning correctly Repair master cylinder.
Restricted brake tubes or hoses Check for soft hoses or damaged
tubes and replace with new hoses
and/or new brake tubes.
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.
Malfunctioning ABS, if equipped with ABS Check system and replace as nec-
essary.
Pedal pulsation (Pedal
pulsates when
depressed for brak-
ing.) Damaged or loose wheel bearings Replace wheel bearings.
Distorted steering knuckle or rear axle shafts Replace knuckle or rear axle shaft.
Excessive disc lateral runout Check per instructions. If not within
specifications, replace or machine
the disc.
Parallelism not within specifications Check per instructions. If not with
specifications, replace or machine
the 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 brake shoe.
Worn or distorted shoe linings Replace brake shoe (or pad).
Loose front wheel bearings Replace wheel bearing.
Distorted backing plates or loose mounting
boltsReplace or retighten securing bolts.
Brake warning light
turns on after engine
startParking brake applied Release parking brake and check
that brake warning light 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 light circuit faulty Repair circuit. Condition Possible Cause Correction

Downloaded from www.Manualslib.com manuals search engine BRAKES 5-9
Excessive Pedal Travel Check
1) Start engine.
2) Depress brake pedal a few times.
3) With brake pedal depressed with approximately 30 kg (66
Ibs) load, measure brake pedal to wall clearance “d” or “e”.
Clearance “d” or “e” between brake pedal and wall
LH steering vehicle clearance “d” : Over 55 mm (2.17 in.)
RH steering vehicle clearance “e” : Over 76 mm (2.99 in.)
4) If clearance “d” or “e” is less than specification, the most pos-
sible cause is either rear brake shoes are worn out beyond
limit or air is in lines.
Should clearance “d” or “e” remain less than specification
even after replacement of brake shoes and bleeding of sys-
tem, 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 Sys-
tem” in this section.
–Remove brake drums for adjuster inspection. Refer to
“Rear Brake” in this section. If defective, correct or replace.
Front Brake Disc Check
Refer to item “Front Disc Brake” in this section for inspection point
and procedure.
Front Brake Pad Check
Inspect pad linings (3) 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)
Limit : 2.0 mm (0.08 in.)
[A]: LH steering vehicle
[B]: RH steering vehicle
1. Pad rim
2. Disc

Downloaded from www.Manualslib.com manuals search engine BRAKES 5-15
Fluid Pressure Test (If Equipped with LSPV)
Test procedure for LSPV assembly is as follows.
Before testing, confirm the following.
Fuel tank is filled with fuel fully.
Vehicle is equipped with spare tire, tools, jack and jack han-
dle.
1) Stop vehicle on level floor and place approximately about
140 kg (309 Ibs) weight on rear housing so that rear axle
weights 600 kg (1323 Ib).
Rear axle weight
“L” : 600 kg (1323 lb)
2) Install special tool to front and rear brake.
Special tool
Front brake
(A) : 09956-02310
(B) : 55473-82030 (Use the air bleeder plug supplied as a
spare part)
Rear brake
(A) : 09956-02310
(B) : 55473-82030 (Use the air bleeder plug supplied as a
spare part)
3) Depress brake pedal gradually till fluid pressure of front
brake becomes as specified below and check corresponding
pressure of rear brake. It should be within specification given
below.
As done above, apply 100 kg/cm
2 pressure to front brake and
check that rear brake pressure is within specification as given
below.NOTE:
Special tool should be connected to bleeder plug hole of
front (driver’s side brake) and rear brakes.
1. Air bleeder plug
2. Weight
3. Attachment
Front brake Rear brake
5000 kPa
50 kg/cm
2
711 psi3800 – 5100 kPa
38 – 51 kg/cm
2
540 – 725 psi
Front brake Rear brake
10000 kPa
100 kg/cm
2
1422 psi5100 – 6500 kPa
51 – 65 kg/cm
2
725 – 924 psi

Downloaded from www.Manualslib.com manuals search engine 5-16 BRAKES
4) If rear brake pressure is not within specification, adjust it by
changing stay position as follows.
If rear brake pressure is higher than specification, move stay
“A” to direction “l” and if it is lower, to direction “r”.
Repeat steps 3) and 4) until rear brake pressure is within
specification.
After adjustment, be sure to torque bolt to specification.
Tightening torque
LSPV adjust bolt
(a) : 25 N·m (2.5 kg-m, 18 Ib-ft)
5) Disconnect brake pipe (2) (connecting between master cylin-
der secondary side and 4-way joint) from master cylinder (1).
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.
Special tool
(A) : 09956-02210
1. LSPV lever
2. LSPV spring
3. LSPV stay
Front brake Rear brake
10000 kPa
100 kg/cm
2
1422 psi9500 – 10000 kPa
95 – 100 kg/cm
2
1350 – 1422 psi

Downloaded from www.Manualslib.com manuals search engine BRAKES 5-17
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 consists of two separate lines,
one for front wheel brakes and the other for rear wheel brakes. Air
bleeding is necessary at right and left front wheel brakes, left rear
wheel brake and LSPV (if equipped), i.e. 3 (4 for vehicle with
LSPV) places in all.
Be sure to bleed air of brake system according to following proce-
dure when its oil hydraulic circuit has been disconnected.
1) Fill master cylinder reservoir with brake fluid and keep at
least one-half full of fluid during bleeding operation.
2) Remove bleeder plug cap (1).
Attach a vinyl tube (2) to bleeder plug, and insert the other
end into container (3).
3) Depress brake pedal several times, and then while holding it
depressed, loosen bleeder plug about one-third to one-half
turn. CAUTION:
Brake fluid is extremely damaging to paint. If fluid should
accidentally touch painted surface, immediately wipe
fluid from paint and clean painted surface.

Downloaded from www.Manualslib.com manuals search engine 5-18 BRAKES
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.