2000 HONDA CR-V Cylinder

Master Cylinder
I nspection/Disassembly
CAUTION: Do not spill brake fluid onthe vehicle; it may
damsge the paint; il brake fluid does contact th6 paint.
wash it off immodiately with water.
NOTE:
. Before reassembling, check that all parts are free of
dust and other foreign particles.
. Do not try to disassemble the master cylinder assem-
bly. Replace the master cylinder assembly with a new
pan it necessary,
. Make sure no dirt or other foreign matter is allowed
to contaminate the brake fluid.
RESERVOIR SEALCheck for damaoe anddeterioration,
RESERVOIRCheck for damage.
ROD SEALCheck for damageand deterioration.
-€-1SILICONE GREASE
MASTER CYLINOERCheck bore for wear, rust and damage.
19-14
Pushrod Clearance Adjustment
NOTE: Master cylinder pushrod-to-piston clearance must
be checked and adjustments made, if necessary. before
installing the master cylinder.
1. Set the special tool on the master cylinder body;
push in the center shaft until the top ot it contacts
the end of the secondary piston by turning the ad-justing nut.
PUSHROD ADJUSTMENT GAUGE07JAG - SD{o100
SECONDARY
MASTER CYLINDER
ADJUSTING NUT
Without disturbing the center shaft's position, in-
stallthe special tool upside down on the booster.
Install the master cylinder nuts, and tighten them to
the sDecified toroue.
Connect the booster iniine with a vacuum gauge 0 -
101 kPa (0 - 760 mmHg, 30 in Hg) to the booster's
engine vacuum supply, and maintain an engine
speed that will deliver 66 kPa (500 mmH9, 20 in Hg)
vacuum.
With a feeler gauge, measure the clearance between
the gauge body and the adiusting nut as shown.
Clearanco: 0 - 0.4 mm (0 - 0.02 inl
VACUUM GAUGElCommo.cidly 6vailablcl0 - 101 kPtl0 - 760 mm Hg, 30 in Hgl
MASTER CYLINDER NUT15 N.m 11.5 kgt m, 11 lbt.ftl
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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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Check the wheel cylinder for leakage.
Check the brake linings for cracking, glazing, wear,
and contamination.
Measure the brake lining thickness. Measurement
does not include brako shoe thickness.
Brake Lining Thicknoss:
Standard: 3.9 -,1.5 mm {0.15 - 0.18 inl
Sorvice Limil: 2.0 mm {0.08 in}
lf the brake lining thickness is less than the service
limit, replace the brake shoes as a set.
Check the bearings in the hub unit for smooth oper-
ation; if the bearing require servicing. refer to sec-
tion 18.
7.
WHEEL CYLINOER
LININGS
8. Measure the inside diameter of the brake drum
with inside vernier calioers,
Drum Insido Diamoter:
Standard: 219.9 - 220.0 mm (8.657 - 8.661 in)
Service Limit: 221.0 mm {8.700 inl
lf the inside diameter of the brake drum is more
than the service limit, replaca the brake drum.
Check the brake drum for scoring, grooves, and
cracKs.
10.
BRAKE DRUM
19-17
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Rear Drum Brakes
Brake Shoes Replacement
1. Remove the upper return spring with the tool.
l@ w€ar eye protestion when using the
brske spring wrench.
RETAINER SPRINGBRAKE SPRING WBENCH{Commerciallv available)
Remove the tension pins by pushing the retainer
spring and turning them.
Lower the brake shoe assembly, and remove the
lower return spring, Make sure not to damage the
dust cover on the wheel cylinder,
Disconnect the parking brake cable from the parking
brake lever.
Remove the brake shoe assembly,
Remove the upper return spring, self-adjuster lever,
and self-adjuster spring, and separate the brake
shoes.
TENSION PIN
5.
o.
SELF.ADJUSTER LEVER UPPER RETURN SPRING
19-18
7. Remove the wave washer, parking brake lever. and
pivot pin from the brake shoe by removing the U-
cliD.
BRAKE SHOE
Apply brake cylinder grease (P/N: 08733 - 80202) or
equivalent rubber grease to the sliding surface of
the pivot pin, 8nd insert the pin into the brake shoe.
Install the parking brake lever and wave washer on
the pivot pin, and secure them with a new U-clip.
. lnstall the wave washer with its convex side fac-
Ing our.
. Pinch the U-clip securely to prevent the pivot pin
from coming out of the brake shoe.
U.CLIPReplace.
\\
w

U-CLIPReplace.WAVE WASHERReplace.
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10.
11,
Connect the parking brake cable to the parking
brake lever,
Clean the threaded portions of clevises A and B.
Coat the threads of the clevises with grease. To
shorten the clevises, turn the adiuster bolt.
Hook the self-adjuster spring to the self-adjuster
lever first, then to the brake shoe,
Install the clevises and upper return spring noting
the installation direction. Be careful not to damage
the wheel cylinder dust covers.
Installthe lower return spring.
12.
14.
UPPER RETURN SPRING
Apply rubber greaseto sliding surface.
15. Apply grease on each sliding surface. Keep grease
or oil off the brake linings. Wipe any excess grease
off the parts.
. Apply brake cylinder grease (P/N: 08733 - 8020E)
or equivalent rubber grease to the sliding sur-
faces as shown.
..4 Slrdrng surface
Apply Molykote 44MA to the brake shoe ends
and opposite edges of the shoes as shown.
.. a Opposite edge of the shoe.: a) Brake shoe ends(Shoe side ends and backingplate contact surface)
(cont'd)
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Rear Drum Brakes
Brake Shoes Replacement (cont'd)
16. Install the brake shoes onto the backing plate. Be
careful not to damage the wheel cylinder dust cov-
ers.
17. Install the tension pins and the retainer springs.
18. Hook the upper return spring with the tool.
@ wsar eye proieclion whon using tho
brtko spring wronch.
lnstallthe brake drum.
lf the wheel cylinder has been removed, bleed the
brake system (see page 19-7).
Press the brake pedal several times to set the self-
adjusting brake.
Adjust the parking brako (see page 19-6).
19.
20.
21.
UPPER RETURN SPRING
TENSION PINS
19-20
7.
SEALANT
Wheel Cylinder Replacement
CAUTION:
. Do not spill brake fluid on th6 vehicle; it may damage
the paint; if brako fluid doos contact tho paint, wash
it off immedialely whh water.
. To pr6v6ni 3pills, cov6r th6 hose ioinls with rags ol
shop lowels,
. Use only a genuine Honda whoel cylinder spocial
bolt.
Remove the brake shoes {see page '19-18).
Disconnect the brake line,
BACKING PLATE
1.
15 N,m 11.5 kgt m,11 tbf.ftl
WHEEL CYLINDER
9 N.m 10,9 kgf'm.6.5 rbtft)
Remove the bolt and the wheel cylinder from the
backing plate.
Apply sealant between the wheel cylinder and back-
ing plate, and install the wheel cylinder.
Install the removed parts in the reverse order of
removal.
Fill the brake reservoir up. and bleed the brake sys-
tem {see page 19-7).
After installation. check for a leak at the line joint.
and retighten if necessary.
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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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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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