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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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Caliper assembly
REMOVAL
1) Hoist vehicle and remove wheel.
2) Remove brake flexible hose mounting bolt from caliper. As
this will allow fluid to flow out of hose, have a container ready
beforehand.
3) Remove caliper pin bolts.
4) Remove caliper from carrier.
DISASSEMBLY
1) Before disassembly, clean all around caliper with brake fluid.
2) Remove piston set ring (1) and boot from caliper, pry off with
a flat-bladed tool. Be careful not to damage boot.
3) Blow compressed air into cylinder through bolt hole where
flexible hose was fitted. With this air pressure, piston can be
pushed out of cylinder.
4) Remove piston seal using a thin blade like a thickness
gauge, etc.
5) Remove bleeder plug and cap from caliper.
WARNING:
Do not apply too highly compressed air which will cause
piston to jump out of cylinder. Place a cloth (1) to prevent
piston from damage. It should be taken out gradually
with moderately compressed air. Do not place your fin-
gers in front of piston when using compressed air.
NOTE:
Be careful not to damage inside (bore side) of cylinder.
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ASSEMBLY
1) Check that slide bushes and boots for wear, corrosion, dam-
age, movement or deterioration. If it is found faulty, correct or
replace.
Apply rubber grease to bush outer surface. And then make
sure that each bush slides easily through each caliper bolt
hole.
2) Tighten bleeder plug to specified torque and install cap.
Tightening torque
Front caliper bleeder plug
(a) : 11 N·m (1.1 g-m, 8.0 lb-ft)
3) Piston seal is used to seal piston and cylinder and to adjust
clearance between pad and disc. Replace with a new one at
every overhaul. Fit piston seal into groove in cylinder taking
care not to twist it.
4) Before inserting piston (2) into cylinder, install new boot (1)
onto piston (2) as shown.
“A” : 2-grooved side directed inside
“B” : 3-grooved side directed outside CAUTION:
Wash each part cleanly before installation in the same
fluid as the one used in master cylinder reservoir.
Never use other fluid or thinner.
Before installing piston and piston seal to cylinder,
apply fluid to them.
After reassembling brake lines, bleed air from them.
NOTE:
Where temperature gets as low as – 30 °C (– 22 °F) in cold
weather, use rubber grease whose viscosity varies very
little even at – 40 °C (– 40 °F).
1. Apply rubber grease
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5) Fit boot as it is in figure into boot groove in cylinder with fin-
gers.
6) Insert piston into cylinder by hand and fit boot in boot groove
in piston.
7) To confirm that boot is fitted in its groove in cylinder properly,
pull piston out of cylinder a little but do not take it all out.
8) Insert piston into cylinder by hand.
9) Install piston set ring.
INSTALLATION
1) Install caliper to caliper carrier.
2) Torque caliper pin bolts (1) to specification.
Tightening torque
Brake caliper pin bolts
(a) : 22 N·m (2.2 kg-m, 16.0 lb-ft)
NOTE:
Boot’s face “B” should be at the same level from cylin-
der’s face “A” all around.
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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CHECK FOR FRONT BRAKE AFTER INSTALLATION
Mount tires and make certain that they rotate smoothly, with a
force of less than 3.0 kg (6.6 Ib).
If tire rotation is heavy, check the following:
Piston, piston seal and cylinder slide bush of caliper for
installation.
Wheel bearings for breakage.
Disc for flatness (Improper flatness brings disc into contact
with lining during rotation and makes rotation heavy).
To check this, measure disc deflection.NOTE:
For above check the following must be observed.
Jack up front wheels, both right and left, off the
ground.
Shift transfer shift lever to 2H (rear wheel) position (if
equipped) and start engine for a few seconds then
stop.
Side figure shows outer periphery of tire.
Be careful not to depress brake pedal when checking
tire for rotation.
1. String
2. Spring measure
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5) To increase clearance between brake shoe and brake drum,
remove rubber plug from brake back plate and turn adjuster
downward with flat-head screw driver.
6) Remove brake drum (1) off by using 8 mm bolts (2).
INSPECTION
Brake Drum
Inspect drum for cleanliness. Check wear of its braking surface by
measuring its inside diameter.
Drum inner diameter “a”
Standard : 220 mm (8.66 in.)
Service Limit : 222 mm (8.74 in.)
Whenever brake drums are removed, they should be thoroughly
cleaned and inspected for cracks, scores, deep grooves.
Cracked, scored, or grooved drum
A cracked, drum is unsafe for further service and must be
replaced.
Do not attempt to weld a cracked drum.
Smooth up any slight scores. Heavy or extensive scoring will
cause excessive brake lining wear and it will probably be neces-
sary to resurface drum braking surface.
If brake linings are slightly worn and drum is grooved, drum
should be polished with fine emery cloth but should not be turned.
NOTE:
When drum is removed, visually inspect wheel cylinder
for brake fluid leakage. Correct leaky point, if any.