1997 ACURA NSX light

Front Suspensio n
Hub Replacemen t
1. Loose n th e whee l nut s slightly .
2. Rais e th e fron t o f vehicle , an d suppor t i t o n safet y
stands i n prope r location s (se e sectio n 1 ).
3 . Remov e th e whee l nut s an d wheel .
NOTE : Befor e installin g th e wheel , clea n th e
matin g surface s o f th e brak e dis c an d insid e of the
wheel .
WHEE L NU T108 N- m(11 kgf-m , 8 0 Ibf-ft )
4. Remov e th e brak e hos e mountin g bolts .
FRON T BRAK E HOS E
BRAK E HOS E MOUNTIN G BOLT S
2 2 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
Corrosio n resistan t bolt/nu t
5. Remov e th e whee l senso r fro m th e knuckl e an d
fron t lowe r contro l arm .
NOTE :
• D o no t disconnec t th e whee l sensor .
• B e carefu l whe n installin g th e sensor s t o avoi d
twistin g wires .
WHEE L
SENSO R
Corrosio n resistan t bolt/nu t
22 N- m(2.2 kgf-m , 1 6 Ibf-ft )
6. Remov e th e calipe r bracke t mountin g bolts , an d
han g th e calipe r assembl y t o on e side .
CAUTION : T o preven t accidenta l damag e t o th e
calipe r assembl y o r brak e hose , us e a shor t piec e o f
wir e t o han g th e calipe r assembl y fro m th e
undercarriage .
CALIPER BRACKE T MOUNTIN G BOLT S
10 8 N- m (1 1 kgf-m , 8 0 Ibf-ft )
9.8 N- m(1.0 kgf-m , 7 Ibf-ft )
Corrosio n resistan t bolt/nu t
9.8 N- m(1.0 kgf-m , 7 Ibf-ft )
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Knuckle/Control Arms/Complianc e Pivo t
Ball Join t Boo t Replacemen t
NOTE: Th e uppe r contro l ar m bal l joint , lowe r contro l
ar m bal l join t an d knuckl e uppe r bal l join t ar e attache d
wit h th e boo t retaine r t o improv e th e sealin g efficienc y
of th e boot .
1. Remov e th e se t rin g an d boot .
TWO-JA W PULLE R
(Commerciall y
available )
Replaceas a set .
NOTE :Do no t damag e th etapere d sectio n o f th ebal l pi n wit h th e bear -ing puller .
2. Remov e th e retainer .
NOTE : Th e knuckl e lowe r bal l join t doe s no t hav e a
retainer .
3. Pac k th e interio r o f th e boo t an d li p wit h grease .
BOOT INSTALLATIO N SECTIO N
CAUTION : D o no t contaminat e th e boo t installa -
tio n sectio n wit h grease . 4
. Wip e th e greas e of f th e slidin g surfac e o f th e bal l
pin , an d pac k wit h fres h grease .
5 . Inser t th e ne w retaine r lightl y int o th e bal l join t pin .
NOTE : Whe n installin g th e bal l joint , pres s th e
retaine r int o th e bal l join t pin .
BAL L PI N TAPERE D SECTIO N
BOO T INSTALLATIO N
SECTION
CAUTION :
• Kee p greas e of f th e boo t installatio n sectio n an d
th e tapere d sectio n o f th e bal l pin .
• D o no t allo w dust , dirt , o r othe r foreig n materi -
al s t o ente r th e boot .
6 . Instal l th e boo t i n th e groov e o f th e boo t installatio n
sectio n securely , the n blee d air .
7 . Adjus t th e specia l too l wit h th e adjustin g bol t unti l
th e en d o f th e too l align s wit h th e groov e o n th e
boot .
BAL L JOIN T ADJUSTIN G BOL T
BOO T CLI P Adjus t th e dept h
GUIDE by turnin g the bolt .07GA G - SD4070 0
SE T RIN G
BOO T
Uppe r knuckl e an d
upper/lowe r contro l arm .
BALL JOIN T
BOO T CLI P
GUID E
07MA G - SL0020 0Adjust th e dept hby turnin g th e tool .
Knuckl e lowe r bal l join tonly.
8. Slid e th e se t rin g ove r th e too l an d int o position .
CAUTION : Afte r installin g th e boot , chec k th e bal l
pi n tapere d sectio n an d thread s fo r greas e contami -
natio n an d wip e the m if necessary .
SET RIN G
BOO T
RETAINE R
RETAINER
LIP
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Ball Join t Boo t Replacemen t
NOTE: Th e uppe r contro l ar m bal l join t i s attache d wit h
th e boo t retaine r t o improv e th e sealin g efficienc y o f th e
boot .
1 . Remov e th e se t rin g an d boot .
TWO-JA W PULLE R
(Commerciall y
available)
SET RIN G
BOO T
RETAINE R
NOTE: D o no t damag e th e tapere dsection o f th e bal l pi n wit h th ebearin g puller .
2. Remov e th e retaine r (uppe r bal l join t only) .
3 . Pac k th e interio r o f th e boo t an d li p wit h grease .
BOOT INSTALLATIO N SECTIO N
CAUTION : D o no t contaminat e th e boo t installa -
tio n sectio n wit h grease . 4
. Wip e th e greas e of f th e slidin g surfac e o f th e bal l
pin , an d pac k wit h fres h greas e (uppe r bal l join t
only) .
5. Inser t th e ne w retaine r lightl y int o th e bal l join t pin .
NOTE : Whe n installin g th e bal l joint , pres s fi t th e
retaine r int o th e bal l join t pin .
BAL L PI N TAPERE D SECTIO N
RETAINE R
BOOT INSTALLATIO NSECTION
CAUTION :
• Kee p greas e of f th e boo t installatio n sectio n an d
th e tapere d sectio n o f th e bal l pin .
• D o no t allo w dust , dirt , o r othe r foreig n materi -
al s to ente r th e boot .
6 . Instal l th e boo t i n th e groov e o f th e boo t installatio n
sectio n securely , the n blee d air .
7 . Adjus t th e specia l too l wit h th e adjustin g bol t unti l
the en d o f th e too l align s wit h th e groov e o n th e
boot .
Adjus t th e dept h b yturnin g th e bolt .
BAL L JOIN TBOOT CLI P
GUID E
0797 4 - SA5080 0
(To e Contro l Ar m Bal l Joint )
07GA G - SD4070 0
Upper contro l ar m bal l join tKnuckl e lowe r bal l join t
SE T RIN G
BOO T
8. Slid e th e se t rin g ove r th e too l an d int o position .
CAUTION : Afte r installin g th e boot , chec k th e bal l
pi n tapere d sectio n an d thread s fo r greas e contami -
natio n an d wip e the m if necessary .
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Pedal Heigh t
Adjustmen t
1. Lo osen th e brak e switc h locknut , an d bac k of f th e
brak e switc h unti l i t i s n o longe r touchin g th e brak e
pedal .
PUSHRO D
LOCKNU TBRAKE SWITC H
BRAKE SWITC H LOCKNU T
2. Loose n th e pushro d locknut , an d scre w th e pushro d
i n o r ou t wit h plier s unti l th e standar d peda l heigh t
fro m th e floo r i s 21 8 m m (8 9/1 6 in) . D o no t adjus t
th e peda l heigh t wit h th e pushro d depressed . Afte r
adjustment , tighte n th e locknu t firmly .
PUSHRO D LOCKNU T
1 5 N- m (1. 5 kgf-m , 1 1 Ibf-ft )
3. Scre w in th e brak e switc h unti l it s plunge r i s full y
depresse d (threade d en d touchin g th e pa d o n th e
peda l arm) . The n bac k of f th e switc h 1/ 2 turn , an d
tighte n th e locknu t firmly . Chec k tha t th e brak e
light s g o of f whe n th e peda l i s released .
LOCKNUT
THREADE DEND
Brak e Peda l Pla y Inspection :
Sto p th e engine , an d inspec t th e pla y b y pushin g th e
peda l b y hand . I f th e peda l fre e pla y i s insufficient , i t
ma y resul t i n brak e drag .
Brake Peda l Play : 1 - 5 m m (1/1 6 - 3/1 6 in )
Parkin g Brak e
Adjustmen t
NOTE: Afte r rea r brak e calipe r servicing , loose n th e
parkin g brak e adjustin g nut , star t th e engine , an d
depres s th e brak e peda l severa l time s t o se t th e self -
adjustin g brake s befor e adjustin g th e parkin g brake .
1 . Remov e th e consol e mat , th e fou r screw s an d th e
consol e box .
CONSOL E BO X
ADJUSTIN G NU T
2. Bloc k th e fron t wheels , the n rais e th e rea r wheel s
of f th e ground .
3 . Mak e sur e th e leve r o f th e rea r brak e calipe r con -
tact s th e brak e calipe r pin .
4 . Pul l th e parkin g brak e leve r u p on e notch .
5 . Tighte n th e adjustin g nu t unti l th e rea r brake s dra g
slightl y whe n turned .
6 . Releas e th e parkin g lever , an d chec k tha t th e rea r
brake s d o no t dra g whe n turned . Readjus t i f neces -
sary.
7. Wit h th e equalize r properl y adjusted , th e rea r
brake s shoul d b e full y applie d whe n th e parkin g
brak e leve r i s pulle d u p 1 0 to 1 4 clicks .
PARKIN G BRAK E LEVE R
BRAKE CALIPE R PI N
MA T
SCRE W
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Front Brak e Pad s
Inspection/Replacemen t
• Neve r us e a n ai r hos e o r dr y brus h t o clea n brak e
assemblies .
• Us e a n OSHA-approve d vacuu m cleane r t o avoi d
breathin g brak e dust .
1 . Loose n th e fron t whee l nut s slightly , the n rais e eac h
sid e o f th e ca r an d suppor t i t o n safet y stand s (se e
pag e 1-10 throug h 1-12 ). Remov e th e fron t wheels .
2 . I f th e brak e pa d thicknes s i s les s tha n servic e limi t
a t ste p 5 , replac e th e fron t pad s a s a set . 3
. Remov e th e tw o brak e hos e mountin g bolts . Remov e
th e tw o calipe r mountin g bolts , an d mov e th e calipe r
ou t o f th e way . Suppor t th e calipe r wit h a piec e o f
wir e s o tha t i t doe s no t han g fro m th e brak e hose .
4 . Remov e th e pa d shims , pa d retainer s an d brak e
pads .
5 . Usin g vernie r calipers , measur e th e thicknes s o f eac h
brak e pa d lining .
Brak e Pa d Thickness :
Standard : 11. 0 m m (0.4 3 in ) max .
Servic e Limit : 1. 6 m m (0.0 6 in )
NOTE : Measuremen t doe s no t includ e pa d backin g
thickness .
(cont'd)
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Tests
Brake Booster

Functional Test

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. If

the pedal sinks, either the master cylinder is

bypassing internally, or the brake system (master

cylinder, lines, modulator, proportioning valve, or

calipers) is leaking.

2. Start the engine with the pedal depressed. If the

pedal sinks slightly, the vacuum booster is operat-

ing normally, if 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. If the brake pedal

sinks more than 10 mm (3/8 in.) in three minutes,

the master cylinder is faulty. A slight change in

pedal height when the A/C 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. If the pedal height does not

vary while depressed for 30 seconds, the vacuum

booster is OK. If the pedal rises, the booster is

faulty.

2. With the engine stopped, depress the brake pedal

several times using normal pressure. When the

pedal is first depressed, it should be low. On con-

secutive applications, the pedal height should grad-

ually rise. If the pedal position does not vary, check

the booster check valve.
Booster Check Valve Test

1. Disconnect the brake booster vacuum hose at the

booster or at the booster side of the valve.

2. Start the engine and let it idle. There should be vac-

uum. If no vacuum is available, the check valve is

not working properly. Replace the check valve and

retest.ProCarManuals.com

Rear Brak e Pad s
Inspection/Replacemen t
• Neve r us e a n ai r hos e o r dr y brus h t o clea n brak e
assemblies .
• Us e a n OSHA-approve d vacuu m cleane r t o avoi d
breathin g brak e dust .
1 . Loose n th e rea r whee l nut s slightly , the n rais e eac h
sid e o f th e vehicl e an d suppor t i t o n safet y stand s
(se e pag e 1-10 throug h 1-12 ).
Remov e th e rea r wheels .
2 . Remov e th e calipe r shield . 4
. Remov e th e tw o brak e hos e mountin g bolts .
Remov e th e tw o calipe r mountin g bolts , an d th e
calipe r fro m th e bracket .
CAUTION :
• Thoroughl y clea n th e outsid e o f th e calipe r t o
preven t dus t an d dir t fro m enterin g inside .
• Suppor t th e calipe r wit h a piec e o f wir e s o tha t
i t doe s no t han g fro m th e brak e hose .
I f linin g thicknes s i s les s tha n servic e limi t a t ste p 6 ,
replac e th e brak e pad s a s a set .
3 . Remov e th e loc k pi n an d clevi s pin . Remov e th e
cabl e clip , an d disconnec t th e cabl e fro m th e arm .
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Features/Construction/Operation
Anti-lock Brake System (ABS) Description

General

In a conventional brake system, if the brake pedal is depressed excessively, the wheels can lock before the vehicle comes

to a stop. In such a case, the stability of the vehicle is reduced if the rear wheels are locked, and maneuverability of the

vehicle is reduced if the front wheels are locked, creating an extremely unstable condition.

The Anti-lock Brake System (ABS) modulates the pressure of the brake fluid applied to each caliper, thereby preventing

the locking of the wheels, whenever the wheels are likely to locked due to be excessive braking. It then restores normal

hydraulic pressure when there is no longer any possibility of wheel locking.

4-Channel Anti-lock Brake System (ABS) Features

• Increased braking stability can be achieved regardless of changing driving conditions.

• The maneuverability of the vehicle is improved as the system prevents the front wheels from locking.

• When the anti-lock brake system goes into action, kickback is felt on the brake pedal.

• The anti-lock brake system is equipped with a self-diagnosis function. When an abnormality is detected, the ABS indi-

cator light comes on. The location of the abnormality can be diagnosed from the frequency of the system indicator

light display blinks.

• This system has individual control of the front and rear wheels. Braking force is controlled on each of the four wheels

independently, resulting in optimum braking efects on the four wheels.

The system has a fail-safe function that allows normal braking if there's a problem with the anti-lock brake system.

Difference Between The 3-Channel And 4-Channel Anti-lock Brake System

Construction

In addition to the conventional braking system, the anti-lock brake system is composed of: gear pulsers attached to the

rotating part of individual wheels; wheel sensors, which generate pulse signals in correspondence to the revolution of the

gear pulsers; ABS control unit, which controls the working of the anti-lock brake system by performing calculations based

on the signals from the individual wheel sensors and the individual switches; a modulator unit, which adjusts the

hydraulic pressure applied to each caliper on the basis of the signals received from the ABS control unit; an accumulator,

in which high-pressure brake fluid is stored; a pressure switch, which detects the pressure in the accumulator and trans-

mits signals to the ABS control unit; a power unit, which supplies the high-pressure working fluid to the accumulator by

means of a pump; a motor relay for driving the power unit; a fail-safe relay, which cuts off the solenoid valve ground cir-

cuit when the fail-safe device is at work; and, an ABS indicator light.ProCarManuals.com