HONDA CIVIC 1999 6.G Workshop Manual

'1.Clean the piston and caliper bore with brake fluid,
and inspect for wear and damage.
Coat the new piston seal with the recommended
rubber grease in the caliper seal set. and install the
seal in the cylinder groove.
Apply the recommended seal grease in the caliper
seal set to the sealing lips and inside of a new pis-
ton boot, and securely install it in the caliper with the
new boot clip.
CAUTION: Be careful nol to damage the caliper
cylinder wall.
PISTON SEALReplace.
--^.,:=-qE!!!-HRUBBER GREASE
Lubricate the caliper and piston with brake fluid,
then install the piston in the cylinder with the dished
end facing in.
IJPISYON BOOTReplace.
j@i
SILICONE GREASE
CALIPER
-6lCALIPEB PIN B
Apply the recommended seal grease in the caliper
seal set to the sliding surface of the pins and the
lnside of the new pin boots.
lnstall the pin boots into the grooves in the caliper
bracket properly.CALIPER ERACKET
7. Insert pin A and pin B into the caliper bracket.
8. Install the pin boots into the grooves in the pans
propeny.
9. Install the brake pads in their original positions (see
page 19-9).
10. Push in the piston so that the caliper will fit over the
pads, and install the caliPer.
11. Tighten the caliper bolts.
12. Connect the brake hose to the caliper with new seal-
ing washers, and tighten the banjo bolt.
-6.lPIN BOOTSReplace.
-6lCALIPER PIN
BANJO EOLT34 N.m (3.5 kg{ m, 25 lbflt}SEALING WASHERSReplace.
'13.
CALIPER BOLT32 N.m 13.3 kgt.rn, 24lblft)
Fill the brake reservoit and bleed the brake system
{see page 19-7).
Perform the following checks:
. Check for leaks at hose and line joints and con-
nections. and retighten if necessary.
. Check for brake hoses for interference and twisting.(cont'd)
14.
19-17

Front Brake Caliper
Reassembly (cont'd)
2056 Type:
. Never use an air hose or dry b.ush to clean brake assemblies.. Uso an OSHA approved vacuum cleansr to avoid breathing brake dust.. Contaminated brake discs or pads reduce stopping ability.t when reusing the pads, always r6instsll the brake pads in their original positioos to prevent loss ol braking efficiency.
CAUTION:
' Do not spill brake tluid or th€ vehicle; it m8y damage the paint; if brake fluid does contact the paint, wash it off imme-diately with water.
. Clean all parts in brake tluid and air dry; blow out all passages with compr63ed air.. Beforo reassembling, check that all parts are fr€e of dust and other foreign particles,. Replace parts with new ones whenevea specified to do so.. Make sure no dirt or other foreign matter is allowad to contaminato the brake fluid,' Always use Genuine Honda DOT 3 Brake Fluid. Using a non-Honda brake fluid can caus€ corrosior and decrease thelife ol the system.
NOTE:
. Coat the piston, piston seal, and caliper bore with clean brake fluid.. Replaceall rubber parts with new ones whenever disassembled.
.'=5@: Use recommended rubber grease in the caliper seal set,
-6l ' Use recommended seal grease In the caliper seal set.
@6--i#i['i,?li"..;:l]l?Y]li"'"'
I
r""'"rr r"""ip"autr, -/ffr
e"6ft 'ADRETATNERSitswearndcatoru'ward
MffiA pr
GUIDE PIN BOOT ) {I I II ) I I
% caL,PER
\I\d/ tt ' id 6
u -es'---r..'.* ".-,."oo*'J.l, ru,oonW U
**=*t
WEAR,INDICAToR. ,ffi OUTERIPAD
BLEED SCREW9 N.m (0.9 kgf.m, 6.5 lbf.ft)
\o@
CALIPER BRACKET
PISTON EOOTReplace. -.&l
BOOT CLIPReplace.
SLEEVE A
SLEEVE 8
-"-41
r{.i'""Jg*'
a,t/ c'f3!@
q.-
t\
20 tbf.ftl
CALIPER BOLT B26Nm{2.7kgf.m,
CALIPER BODY
PIN BOOTReplace.
BRAKE PAOS
19-18

1.Clean the piston and caliper bore with brake fluid,
and inspect for wear and damage.
Coat a new Diston seal with the recommended rub-
ber grease in the caliper seal set, and installthe seal
in the cylinder groove.
Apply the recommended seal grease in the caliper
seal set to the sealing lips and inside ol a new pis-
ton boot, and securely install it in the caliper with a
new boot clip.
CAUTION: Be carelul not to damage ths calipor
cylinder wall.
Replace.
=_.-1!!4!!nRUBEER GREASE
IJ
Replace.
-6,SILICONE GREASE
t./
4. Lubricate the caliper and piston with brake fluid,
then install the piston in the cylinder with the
dished end facing in.
Apply the recommended seal grease in the caliper
seal set to the sliding surface oJ sleeve B and the
inside of the new pin and sleeve boots.
lnstall the new sleeve and pin boots 8nd sleeve B
on the caliDer.
NOTE: Make sure to install the boots into the grooves
in the caliper and sleeve B properly.
SI.EEVE BOOT
YPIN BOOTReplace.
(cont'd)
19-19
SLEEVE B

Front Brake Caliper
Reassembly (cont'dl
7.Apply the recommended seal grease in the caliperseal set to the sliding surface of sleeve A and theinside of a new guide pin boot.
Install the guide pin boot into the groove in thesleeve A.
Make sure that the brake pad retainers and brakepads are in their original positions (see page 19-10).
Install the caliper onto sleeve A, and pivot it downinto position.
NOTE: Install the guide pin boot into the groove inthe caliper properly.
BRACKET
SLEEVE A
19-20
11.Connect the brake hose to the caliper with new seal-ing washers, and tighten the banjo bolt.
Tighten the caliper bolt B.
Fill the brake reservoir and bleed the brake svstem(see page 19-7).
Perform the following checks.. Check for leaks at hose and line ioints and con-nectaons, and retighten if necessary.. Check for brake hoses for interference and twist-Ing.
13.
14.
BANJO BOLT
26 N.m (2.7 kgl.m, 20 lbtftl

Master Cylinder/Brake Booster
IRemovaUlnstallation
CAUTION:
. Be care{ul nol to bend or damage the brake lines when
rsmoving the mastsr cYlinder.
. Do not soill brakefluid on the vehicle; it may damage
the paint; if brake fluid does contact the paint, wssh
it off immediatelY with water'
. To prevent spill3, cover the hose ioints with rags or
shop towels.
9. Remove the four booster mountlng nuts
10. Pull the brake booster forward until the clevis is
clear of the bulkhead.
11. Remove the brake booster from the engine com-
panmenr.'12. Install the brake booster and master cylinder in the
reverse order of removal.
CAUTION:
. When connecting the brake lines. make sure
that there is no inte erence between the brake
lines and oth6r Parts.
r Be careful not to bend or damage the brake lines
when installing the master cylinder.
NOTE: lf replacing the master cylinder or brake
booster, check and adiust the pushrod clearance
be{ore installing the master cylinder (see page 19-221'
Fill the master cylinder reservoir, and bleed the
brake svstem (see Page 19-7).
After installation. check the brake pedal height and
brake pedal tree play (see page l9-5) and adjust if
necessary.
BRAKE BOOSTER(With ABS: 7" + 8" tandem brake booster)
BRAKE FLUIO LEVELSWITCH CONNECTORS
MASTER CYLINDER
VACUUM HOSE
1.
2.
3,
5.
Disconnect the brake fluid level switch connectors'
Remove the reservoir cap from the master cylinder'
The brake fluid may be sucked out through the top
of the master cylinder reservoir with a syrlnge.
Disconnect the brake lines from the master cylinder'
Remove the master cylinder mounting nuts and
washers.
\l/
6. Remove the master cylinder from the brake booster'
7. Disconnect the vacuum hose trom the brake booster'
8. Remove the cotter pin and clevis pin from the clevis'
CAUTION: Do not disconnect the clevb by remov-
ing it from the operating rod of the brako booster' lf
the clevis is loosened, adiust the pushrod length
before installing th€ brake booster (see page 19-221'
COTTER PINReplace.
To Rear Wheel Cylinders
14.
-6.4CLEVIS PIN
To Front Caliper(Without ABS)$
t'N't'ttrnt'-''
To Front CaliperlWithout ABSi
PBOPORTIONING CONTROL VALVE
15 N.m {1.5 kgl m,11 tbtft)
15 N.m {1.5 kgif.m, 11 lbtft}(With ABS: To modulator unit)lr
19-21

Master Cylinder/Brake Booster
Pushrod Glearance Adjustment
NOTEr
. The master cylinder pushrod-to-piston clearancemust be checked and adjustments made, if neces_sary, before installing the master cylinder.. ABS type is shown, conventional brake type is similar.
1. Set the special tool on the master cylinde. body; push
in the center shaft until the top of it contacts the endofthe secondary piston by turning the adjusting nut.
Without disturbing the center shaft's Dosition, installthe specialtool upside down on the booster.Install the master cylinder nuts, and tighten to thespecified torque.
Connect the booster in-line with a vacuum gauge O _
101 kPa (0 - 760 mmHg, 30 in.Hg) to the booster,sengine vacuum supply, and maintain an enginespeed that will deliver 66 kpa (500 mmHg, 20 in.Hg)vacuum.
With a feeler gauge. measure the clearance Detweenthe gauge body and the adjusting nut as shown.
Clearance: 0 - 0.4 mm {0 - 0.02 in)
VACUUM GAUGE(Comm€rcially availeblel0 - 101 kPa{0 - 760 mm Hg, 30 in.Hg)
AOJUSTING NUT
FEELER GAUGE
19-22
10.
NOTE: lf the clearance between the gauge bodyand adjusting nut is 0.4 mm (0.02 in), the pushrod-to-piston clearance is 0 mm. However, if the clear_ance between the gauge body and adjusting nut is0 mm, the pushrod-to-piston clearance is 0.4 mm(0.02 in) or more. Therefore, it must be adjusted andrechecked.
6. lf clearance is incorrect, loosen the star locknut, andturn the adjuster in or out to adjust.
NOTE;
. Adjust the clearance while the specified vacuumis 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 in)
7.
ADJUSTERPUSHRODADJUSTMENT GAUGE07JAG - SD('1(x)
9. Adjust the pushrod length as shown if the boosterrs removed.
STAR LOCKNUT22 N.m{2.2 kg,f.m, 16lbtft)
11610.5 mm{{.571 0.02 in)
PUSHRODLOCKNUT15 N.m 11.5 kgf.m, 11 tbtftl
Install the master cylinder {see page l9-21).

Brake Booster InsPection
FunctionalTest
1. With the engine stopped, depress the brake pedal
several times to deplete the vacuum reservoir, then
depress 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 control
valve, or caliPer) is ieaking.
2. Start the engine with the pedal depressed lf the
pedal sinks slightly, the vacuum booster is operating
normally. lf the pedal height does not vary, the
booster or check valve is faultY.
3. With the engine running. depress the brake pedal
lightly. Apply just enough pressure to hold back
automatic transmission creep. lf the brake pedal
sinks more than 25 mm (1.0 in.) in three minutes,
the master cvlinder is faulty. A slight change in
pedal height when the A'lC compressor cycles on
and off if normal. (The A/C compressor load
changes the vacuum available to the booster')
Leak Test
1. Depress the brake pedal with the engine running.
then stop the engine. lf the pedal height does not
vary while depressed for 30 seconds, the vacuum
booster is OK. lf the pedal rises. the booster is
faulty.
2, With the engine stopped, depress the brake pedal
several times using normal pressure When the
Dedal is first depressed, it should be low On con-
secutive applications, the pedal height should grad-
uallv rise. lf the pedal position does not vary, checK
the booster check valve.
l./
19-23
Booster Check Valve Test
1. Disconnect the brake booster vacuum hose at the
booster.
2. Stan 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.
BRAKE BOOSTERVACUUM HOSE(Check valve
built-in)

Rear Brake Pads
Inspection and Replacement
Never use an air hose or dry brush to clean brakeassemblies.
Use an OsHA-apptoved vacuum cl€aner to avoidbreathing brake dust,
Block the front wheels, loosen the rear wneet nutsslightly, support the rear of the vehicle on safetystands, then remove the rear wheels.
Release the parking brake, and remove the calioersh ield.
CALIPER SHIELD
Remove the brake hose clamp bolt from the trailingarm first, then remove the two caliper mountingbolts and the caliper from the bracket.
CAUTION:
. Thoroughly clean the outside of the caliDer toprevent dust and dirt trom entering inside.. Support the calipor with a pieco of wire so thatit does not hang fuom the brake hose.
NOTEr Check the hoses and pin boots for damageor deterioration.
PARKING BRAKE CABLE ^.. ._-_ ---.
'L
19-24
4. Remove the outer pad shim, pads, and pad retainers.
PAO RETAINERS
OUTER PAOSHIMCheck for
REAR BRAKE PADSCheck for wear.
Using vernier calipers, measure the thickness ofeach brake pad lining. The measurement does notanclude the pad backing plate thickness.
Brake Pad Thickness:
Standard: 7.0 - 8.0 mm {0.28 - 0.31 in}Service Limit: 1.5 mm {0.06 in}
lf the pad thickness is less than the service limit,replace the pads and shims together as a set.
BACKING PI-ATE

I
7.
11.
Clean the caliper thoroughly; remove any rust, and
check for grooves and cracks.
Check the brake disc for damage and cracks.
lvlake sure that the pad retainers are installed in
their correct positions.
PAD RETAINERS
Apply grease to the points indicated by the arrow in
the following drawing:
NOTE: Use the pad grease included in the pad set
or lMolykote M77 grease, and apply a thin coat of
grease evenly to the designated points.
. Piston end and inner pad contact surface
. Pad and caliper bracket contact surface
. Outer pad shim and outer pad contact surface
. Outer pad shim and caliper body contact surface
lnstall the brake pads and outer pad shim on the
caliper bracket. Install the inner pad with its wear
indicator facing downward.
@iwhen reusing the pads, always reinstall the
brake pads in iheil original posiiions lo prevont
loss ol braking efficiency
. Contaminaled brake discs or pads reduce stop-
ping ability. Keep grease off the discs and pads.
t./
19-25
12. Rotate the caliper piston clockwise into the cylinder'
then align the cutout in the piston with the tab on
the inner pad by turning the piston back
CAUTION: Lubricate ths boot with rubber grease
to avoid twisting the piston boot. lf the piston boot
is twisted, back it out so it sits properly.
CALIP€R MOUNTINGBOLTS23 N,m {2.3 kg{.m, 17 lbt'ft)
13.
14.
15.
CUTOUT
BRAKE CALIPER
Install the brake hose clamp on the trailing arm.
Install and tighten the caliper mounting bolts.
Install the caliper shield.
After installation. check for leaks at hose and line
joints and connections, and retighten if necessary.
Depress the brake pedal several times to make sure
the brakes work, then test-drive
NOTE: Engagement of the brake may requrre greater
pedal travel immediately after the brake pads have
been replaced as a set. Several light applications of
the brake pedal will restore the normal pedal travel.
Greater than normal pedal travel may damage the
master cylinder.
16.
17.

Rear Brake Disc
Disc Runout Inspection
1.Loosen the front wheel nuts slightly, then raise thevehicle, and suppon it on safety stands. Removethe front wheels.
Remove the brake pads (see page 19-24).
Inspect the disc surface for damage and cracks.Clean the disc thoaoughly, and remove a

rust.
Use wheel nuts and suitable plain washers to holdthe disc securely against the hub. then mount a dialindicator as shown. and measure the runout at10 mm (0.4 in) from the outer edge of the disc.
Brake Disc Runout:
Service Limit:0.10 mm {0.00,t in)
5. lf the disc is beyond the service limit, refinish thebrake disc,
Max. Retinishing Limit: 8.0 mm {0.31 in)
NOTE: A new disc should be refinished if its runoutis greater than 0.10 mm (0.004 in).
19-26
Disc Thickness and Parallelism
Inspection
1. Loosen the front wheel nuts slightly, then raise thevehicle, and support it on safety stands. Removethe front wh6els.
2. Remove the brake pads (see page j9-24).
3. Using a micrometer. measure disc thickness aterght points, approximately 45" apart and 1o mm{0.4 in) in from the outer edge of the disc. Replacethe brake disc if the smallest measurement is lessthan the max. refinishing limit.
Brake Disc Thickness:
Standard: 8.9 - 9.1 mm (0.350 - 0.358 in)Max. Rsfinishing Limit: 8.0 mm {0.31 in}
Brake Disc Parallelirm: 0.015 mm(0.0006 inl msx.
NOTE; This is the maximum allowable differencebetween the thickness measurements.
4. lf the disc is beyond the service limit for Darallelism.refinish the brake disc.
NOTE; See section 18 for brake disc replacement.