Brake caliper HONDA CR-V 2000 RD1-RD3 / 1.G User Guide

Master Cylinder/Brake Booster
Removal/lnstallation
1, Disconnect the brake fluid level switch connectors.
2. Remove the reservoir cap from the master cylinder.
3. Remove the brake fluid from the master cvlinder
reservoir with a syringe.
4. Disconnect the brake lines from the master cylinder.
To prevent spills, cover the line joints with rags or
shop towels.
5. Remove the master cylinder mounting nuts and
wasners.
6. Remove the master cylinder from the brake booster.
CAUTION: Be careful not to bend or damage the
brake lines when removing the master cylinder.
Do not spill brake fluid on the vehicle; it may dam.
age the paint; it brake fluid does cont.ct the paint,
wash it oft immediately with water.
7. Disconnect the vacuum hose from the brake booster.
8. Remove the cotter pin and clevis pin from the clevis.
Do not disconnect the clevis by removing it from
the operating rod of the brake booster. lf the clevis
is loosened, adjust the pushrod length before
installing the brake booster (see page 19-15).
To Front Caliper (Without ABS)
\\
15 N.m {1.5 kgtm, vAcuuM HosE
r r rbf.ft) |
/ | BRAKE FLUTD LEvEL
/l /
swrrcHcoNNEcroRs
/ I I I COTTER PIN
I I / neotace
l,/-- ro Rear wheet cylinders / | I
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9. Remove the four booster mounting nuts.'10. Pull the brake booster forward until the clevis is
clear of the bulkhead.
11. Remove the brake booster from the enqine com-
panment.
12. Install the brake booster and master cylinder in the
reverse order of removal, and note these items:
. When connecting the brake lines, make sure that
there is no interference between the brake lines
and other parts.
. Be careful not to bend or damage the brake lines
when installing the master cylinder.
. lf replacing the master cylinder or brake booster,
check and adjust the pushrod clearance before
installing the master cylinder (see page 19-14).
Fill the master cylinder reservoir, and bleed the
brake system (see page 19-7).
After installation, check the brake pedal height and
brake pedal free play (see page 19-5), and adjust if
necessary.
13 N.m 11.3 kg{.m,I rbf.ft)
13.
14.
To Master Cylinder(Without ABS)To Modulator Unit(with ABs)@-\
\
^ To Front Caliper
9i\.
-#qCLEVIS PIN
):-,/
PROPORTIONING CONTROL VALVE
MASTER CYLINDER
15 N.m (1.5 kgf.m, 11 lbl.ftl
BRAXE BOOSTER
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6.
7.
8.
lf the clearance between the gauge body and
adjusting nut is 0.4 mm (0.02 in), the pushrod-to-
piston clearance is 0 mm. However. if the clearance
between the gauge body and adjusting nut is 0 mm,
the pushrod-to-piston clearance is 0.4 mm (0.02 in)
or more. Therefore it must be adjusted and
recheck€d.
lf clearance is incorrect, loosen the star locknut, and
turn the adjuster in or out to adjust.
. Adjust the clearance while the specified vacuum
is applied to the booster.
. Hold the clevis while adjusting.
Tighten the star locknut securely.
Remove the special tool.
0 - 0.4 mm (0 - 0.02 inl
Adjust the pushrod length as shown if the
is removed,
booster
11610.5 mm{4.6 t 0.02 inl
PUSHRODLOCKNUT1.5N.m 11.5 kgf.m. '11 lbtfl)
Install the master cylinder (see page 19-13).
9.
STAR LOCKNUT22 N.m12.2 kgt m. 16 lbtftl
10.
(Check valve is built-in)
Brake Booster Inspection
FunctionalTest
1. With the engine stopped, press the brake pedal sev-
eral times to deplete the vacuum reservoir. thenpress the pedal hard, and hold it for 15 seconds. lf
the pedal sinks, either the master cylinder is
bypassing internally, or the brake system (master
cylinder, lines, modulator, proportioning valve. or
caliper) is leaking.
2. Start the engine with the pedal pressed. lf the pedal
sinks slightly. the vacuum booster is operating nor-
mally. lf the pedal height does not vary, the booster
or check valve is faultv.
3. With the engine running, press the brake pedal light-
ly. Apply just enough pressure to hold back auto-
matic transmission creep. lf the brake pedal sinks
more than 10 mm (3/8 in.) in three minutes, the mas-
ter cylinder is faulty. A slight change in pedal height
when the Ay'C compressor cycles on and off is nor-
mal. (The Ay'C compressor load changes the vacuum
available to the booster.)
Leak Test
1.Press the brake pedal with the engine running, then
stop the engine. lf the pedal height does not vary
while pressed for 30 seconds, the vacuum booster is
OK. lf the pedal rises, the booster is faulty.
With the engine stopped, press the brake pedal sev-
eral times using normal pressure. When the pedal is
first pressed. it should be low, On consecutive appli-
cations, the pedal height should gradually rise. lf thepedal position does not vary. check the booster
check valve.
Boostor Chock Valve Test
1. Disconnect the brake booster vacuum hose at the
booster.
2. Start the engine, and let it idle. There should be vac-
uum. lf no vacuum is available, the check valve is
not working properly. Replace the brake booster
vacuum hose and check valve. and retest.
ERAKE BOOSTERVACUUM HOSE
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Brake Hoses/Lines
Inspection/Torque Specif ications
1. Inspect the brake hoses for damage, deterioration, leaks, interference, and twisting
2. Check the brake Iines for damage, rusting, and leakage. Also check for bent brake lines.
3. Check for leaks at hose and line joints and connections, and retighten if necessary.
4. Checkthe master cylinder, proportioning control valve. and ABS modulator unit for damage and leakage.
NOTE: Replace the brake hose clip whenever the brake hose is serviced.
MASTER CYLINOER.Io.BRAKE LINE15 N.m 11.5 kgt m, 11 lbnftl
PROPORTIONING CONTROL VALVE.Io-BRAKE LINE15 N.m (1.5 kgf.m. 11 lbl.ftl
BRAKE LINE-Io-BRAKE HOSE15 N.m 11.5 kgd.m, 11 lbf'ft)
CYLINDER15 N.m 11.5 kgf.m, 11 lbf.ft)BLEED SCREW7 N.m 10.7 kgf.m, 5 lbt.fttBRAKE HOSE-to-CALIPER{8ANJO BOLTI34 N.m (3.5 kgf.m,25 lbf.ftlBLEED SCREW9 N.m 10.9 kgf.m, 6.5 lbf.ftlwith ABS:
19-21
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Brake Hoses/Lines
Hose Replacement
CAUTION: Do not spill brak€ fluid on the vehicl€; it m8y
damage th€ paint; if brak€ lluid doos contact tho paint,
wash it off immediately with water.
NOTE:
. Before reassembling, check that all pans are free of
dust and other foreign particles.
. Replace parts with new ones whenever specified to
qo so,
Replace the brake hose ifthe hose is twisted, cracked.
or if it leaks.
Disconnect the brake hose from the brake line using
a 10 mm flare nut wrench.
'1.
FLARE NUTWRENCH(Commercially
available)
BRAKE HOSE
Remove and discard the brake hose cliD from the
brake hose.
Remove the banjo bolt, and disconnect the brake
hose from the calioer.
5. Remove the brake hose from the knuckle.
19-22
6. Install the brake hose on the knuckle first, then con-
nect the brake hose to the caliper with the banjo bolt
and new sealing washers.
6 mm HOSE BRACKETEOLTS9.8Nm(1.0 kgf.m,7 lbf.ftlBRAKE HOSE
BANJO BOLT34 N.m
13.5 kgf.m, 25 lbl.ftl
SEALING WASHERSHeplace.
7. Installthe brake hose on the upper brake hose bracket
with a new b.ake hose clip.
Replace.
BRAKE HOSE ARACKET
Connect the brake line to the brake hose.
After installing the brake hose, bleed the brake sys-
tem (see page '19-7).
Perform the following checks;
. Check the brake hose and line joint for leaks, and
tighten if necessary.
. Check the brake hoses for interference and twist-
Ing
1 tbtftl
F
)
/
8.
9.
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Anti-lock Brake System (ABS)
Features/Gonstruction (cont'd)
ABS Modulator
The ABS modulator consists of the inlet solenoid valve, outlet solenoid valve, reservoir, pump, pump motor and thedampjng chamber.
The modulator reduces the caliper fluid pressure directly. lt is a circulating-type modulator because the brake fluid circulatesthrough the caliper, reservoir and the master cylinder.The hydraulic control has three modes: pressure reduction, pressure retaining and pressure intensifying modes.The hydraulic circuit is the independent four channel-type, one channel for each wheel.
SOLENOID VALVE
t-
Pressure intensifying mode: Inlet valve open, outlet valve closed,
Pressure retaining mode:
Pressure reduction mode:
Motor operation mode:
Master cylinder fluid is pumped out to the caliper.Inlet valve closed, outlet valve closed.
Caliper fluid is retained by the inlet valve and outlet valve.Inlet valve closed, outlet valve ooen
Caliper fluid flows through the outlet valve to the reservoir.When starting the pressure reduction mode. the pump motor is ON.When stopping ABS operation, the pump motor is OFF.The reservoir fluid is pumped out by the pump, through the damping chamber, to the mastercylinder.
PUMP MOTOR
19-30
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