Brake master cylinder HONDA CIVIC 1998 6.G Workshop Manual

ILubrication Points
For the details of lubrication points and types of lubricants to be applied, refer to the lllustrated Index and various workprocedures (such as Assembly/Reassembly, Replacement, Overhaul. Installation, etc.) contained in each section.
No.LUBRICATION POINTS
Engine
LUBRICANT
"Energy Conserving" grade oil,The oil container may also display the Apl Certification markshown below. Make sure it says ,,For Gasoline Engines.,,SAE Viscosity: See chart below,
I
TransmissionManualGenuine Honda MTF*1
Genuine Honda Premium FormulaAutomatic Transmission Fluid (ATF)*,
Genuine Honda CVT Fluid*3
Genuine Honda DOT3 Brake Fluid*a
Automatic
CVT
3Brake Line
ClL,tci t""e4
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Genuine Honda DOT3 Brake Fluid*aPower steering gearboxSteering grease P/N 08733 - BO70EShift lever pivots (manual transmission)Grease with molybdenum disulfide7-:ti
9
10'l'l
l3
14
't7
18
19
20
2122
Release fork (manual trancmi Steering bootsTailgate hinges and latches (2-door HatchbacklSteering ball joints
Shift lever (automatic transmission)Pedal linkageBrake master cylinder pushrod
Super High Temp Urea crease (p/N 08798 - 9OO2)
i Multi-purpose grease
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Honda White Lithium Grease
Multi-purpose grease
Silicone grease
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Trunk hinges and latch (4-door Sedan and 2-doorCoupe)Door hinges upper and lowerDoor opening detentsHood hinge and hood latch-FUet T ter ttd
Clutch master cylinder pushrodThrottle cable end and throttle linkageRear brake shoe linkagesSteering wheel (back side)
23
E-
Caliper piston seal, dust seal,caliper pin. pistonThrottle cable end (dashboard lower panel)
Power steering system (for cars with p/S)
Air conditioning compressorComDressor oil:SANDEN: SPlo P/N 38897 - p13 -A01AH or 38899 - p13_ A01{For Refrigerant: HFC-134a (R-134a))
CERTIFICATION SEAL
ffi
NorE: The items m arked * 1, *2, +3, *4 and +5 on above chan are described as folows:*1: Always use Genuine Honda Manual Transmission Fluid (MTF). Using motor oil can cause stiffer shifting because itdoes not contain the proper additives.*2: Always use Genuine Honda premium Formula Automatic Transmission Fluid (ATF). Using a non-Honda ATF can affectshift quality.+3: Use Genuine Honda cVTfluid only usingotherfluid can affect tra nsmission operation and may reduce transmission life.*4: Always use Genuine Honda DoT3 Brake Fluid. Using a non-Honda brake fluid can cause corrosion and dec.ease the lifeof the svstem.*5: Always use Genuine Honda Power steering Fluid. using any other type of power steering fluid or automatrc transmissionfluid can cause increased wear and poor steering in cold weather.
4-2
Recommended Engine Oil
Engine oil viscosity forambrent temperature ranges
API SERVICE LABEL

Glutch Master Gylinder
IRemovaUlnstallation
CAU'NON:
. Do not sDill brake lluid onthevehicle;it may damage
the paint; if brake fluid does contact the paint, wash
it off immediatelY with water.
. Plug the end ofthe clutch line and reservoir hos€ with
a shop towelto prevent brake tluid from coming out
1. The brake tluid can be removed from the clutch
master cylinder reservoir with a syringe
2. Disconnect the clutch line and reservoir hose from
the clutch master cylinder.
19N.m 11.9 kgf.m,14 tbf.ttl
[.
3. Pry out the lock pin, and pull the pedal pin out
the yoke. Remove the nuts
NUTS8 x 1 .25 mm13 N.m {'1.3 kgt.m,9.4lbf ft)
)
of
CLUTCH LINE
iffi,
4. Remove the clutch master cylinder.
CLUTCH MASTER CYLINDER
lnstall the clutch master cylinder in the reverse
order of removal.
NOTE: Bleed the clutch hydraulic system {see page
12-61,
12-5

Slave Gylinder
Removal/lnstallation
CAUTION:
. Do not spill brake tluid on the vehicle; it may damage
the paint; if brake fluid does contact th€ paint, wash
it off immodiatoly with water,
. Plug the end ot the clutch line with a shop towel to
prevsnt brake fluid from coming oul.
-61'srp", High Temp Urea crease (p/N
08798 - 90021.
: Brake Assembly Lube or equivalent rubber
grease.
1. Disconnect the clutch line from the slave cvlinder.
2. Remove the slave cylinder from the clutch housing.
12-6
3. Install the slave cylinder in the reverse order of
removal.
NOTE: Make sure the boot is installed on the slave
cvlinder.. CLUTCH LINE15 N.m (1 .5 kgf.m, 1 1 lbf.It)
SLAVE CYLINDER
-G4(P/N 08798- 90021
8 x 1.25 mm22 N.m 12.2 kgl.n,16 lbl.lt)
:^..:i!!!!! :l
(Brak€ AssemblyLubol
Bleed the clutch hydraulic system.
a Attach a hose to the bleeder screw, and suspend
the hose in a container of brake fluid.
. Make sure there is an adequate supply of fluid at
the clutch master cylinder, then slowly pump the
clutch pedal until no more bubbles appear at the
bleeder hose.
. Refill the clutch master cylinder with fluid when
done.
. Always use Genuine Honda DOT 3 Brake Fluid.
Using a non-Honda brake fluid can cause corro-
sion and decrease the life of the system.
. Confirm clutch operation, and check for leaking
flu id.

t
Conventional Brake
Speciaf Tools .............19'2
Component Locations
lndex ................ ...... 19-3
Inspection and Adiustment
Brake System Rubber Parts
and Brake Booster ...........,.,............. 19-4
Brake Pedal ............ 19-5
Parking Brake ........ 19-6
Bleeding ................. 19-7
Front Brake Pads
Inspection and Replacement .......... 19-8
Front Erake Disc
Disc Runout Inspection ................... 19-12
Disc Thickness and Parallelism
Inspection .......... 19-12
Front Brake Caliper
Disassembly .......... 19'13
Reassembly ........... 19-16
Master Cylinder/Brake Booster
Removal/lnstallation ....................... 19-21
Pushrod Clearance Adiustment ...... 19-22
Brake Booster Inspection ................ 19-23
Rear Brake Pads
Inspection and Replacement ,,........ 19-24
Rear Brake Disc
Disc Runout lnspection ................... 19-26
Disc Thickness and Parallelism
Inspection .......... 19-26
Rear Brake Caliper
Disassembly ...........19-27
Reassembly ........." 19-31
Rear Drum Brake
Index/lnspection .............................. 19-35
Inspection ....,.,....... 19-36
Brake Shoe Disassembly ..............." 19-37
Brake Shoe Reassembly ...............'.. 19-37
Brake Hoses/Lines
Inspection/Torque Specifications ..... 19-39
Hose Replacement ........................... 19-40
Parking Brake Cable
lnspection and Replacement ........,. 19-41
l-l

Component Locations
I
lndex
ERAKE PEDALInspectron andAdjustment, page 19 5
BRAKE HOSES LINESInspection/Torque specif ications, page 1 9-39Hose Replacement, page 19-40
MASTER CYLINDER/BRAKE BOOSTERRemoval/lnstallation, page 19 21Pushrod Clearance Adjustment, page 19_22
Brake Booster Inspection, page 19-23
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PARKING BRAKE CASLEinspection and Replacement,page 19 41
FRONT BRAKESNOTE: There are two types offront brake calipers:The caliper types can be identitied by the "5410"
or "2056" stamped on the caliper body. Check thetype ot the brake caliper betore servicing.Front Brake Pads5410 Type: page 19-82056 Typer page 19 10Front Brake Disc, page 19-12Front Brake Caliper5410 Type: page 19-132056 Type: page 19-14
BBAKEAdiustment, page 19-6REAR ORUM BRAKESInspection, page 19-36
Brake Shoe Beplacement, page 19'37
REAR DISC BRAKESRear Brake Pads, page 19 24Rear Brake Disc, page 19 26Rear Brake Caliper, page 19'27
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19-3

Inspection and Adjustment
€)
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Brake System Rubber Parts and Brake Booster
Brake Boostet
Check brake operation by applying the brakes.
lf the brakes do not work properly, check the brake
booster, Replace the brake booster as an assembly
if it does not work properly or if there are signs of
leakage.
Piston Cup and Pressure Cup Inspeqtion
. Check brake operation by applying the brakes.
Visually check for damage or signs of fluid leak-
age.
Replace the master cylinder as an assembly if
the pedal does not work properly or if there is
damage or signs of fluid leakage.
. Check for a difference in brake pedal stroke
between quick and slow brake applications.
Replace the master cylinder if there is a differ-
ence in oedal stroke.
Brake Hoses
Visually check for damage or signs of fluid leakage.
Replace the brake hose with a new one if it is dam-
aged or leaking.
Caliper Piston Seal and Piston Boots
Check brake ope.ation by applying the brakes.
Visually check for damage or signs of fluid leakage.
lf the pedal does not operate properly, the brakes
drag. or there is damage or signs of fluid leakage,
disassemble and inspect the brake caliper. Replace
the boots and seals with new ones whenever the
brake caliDer is disassembled.
Wheol Cylindor Piston Cup and Dust Cover
Check brake operation by applying the brakes.
Visually check for damage or signs of fluid leakage.
lf the pedal does not operate properly, the brakes
drag, or there is damage or signs of fluid leakage,
disassemble and inspect the wheel cylinder. lf nec-
essary, replace the wheel cylinder as an assembly.
19-4

I
Bleeding
CAUTION:
. Always use Genuine Honda DOT 3 Brake Fluid. Using 8
non-Honda brak€ fluid can cause corrosion and
docrea3e the life of the system.
. Make surs ||o dirt or other foteign matter is allowed
to contaminate the brake fluid,
. Do not spill brake lluid on the vehicle, it may damago
the paint; if brake lluid doos contac{ the paint, wash
it ofl imm€diately with water.
NOTE: The reservoir on the master cylinder must be at
the MAX (upper) level mark at the start of the bleeding
procedure and checked after bleeding each brake
caliper. Add fluid as required.
1. Make sure the brake fluid level in the reservoir is at
the MAX lupper) level line.
MAX {UPPER) LEVEL
CYLINDER
Have someone slowly pump the brake pedsl several
times, then apply steady Pressure.
Loosen the brake bleed screw to allow air to escape
from the system. Then tighten the bleed screw
securely.
Repeat the procedure for each wheel in the sequence
shown below until air bubbles no longer appear in
the fluid.
Refill the master cylinder reservoir to the MAX (up-
per) level line.
ELEEDING SEOUENCE:
O Front Right(D Bo.r Right
O Front LeftO Rear Left1,,
19-7
FRONTT
REAR lDrum Brakel:
REAR (Disc Brake):
AIEED SCREW9 N.m (0.9 ksf m, 6.5 lbf'ft)

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)