1997 ACURA NSX seats

P/S ADJUSTMENT GUIDE

07973-6920001

11. Insert the steering rack into the cylinder housing,

being careful not to damage the steering rack

sliding surface.
13. If the pinion dust seal was removed, drive in the

new dust seal until it bottoms on the step on the pi-

nion set screw.

14. Grease the sealing lip of the pinion dust seal.
• Press the new lower bearing into the gearbox

housing until it seats using a press and special

tool.

NOTE:

• Install the lower bearing with the wider side of

the outer race toward the bottom of the

gearbox.

• Hold the outer race with the tool securely.

• Do not allow dust and other foreign materials to

enter the lower bearing.
12. Install the steering pinion into the gearbox.

NOTE: Do not engage the steering pinion with the

steering rack this time.ProCarManuals.com

Valve Seat s
Reconditionin g
1. Rene w th e valv e seat s i n th e cylinde r hea d usin g a
valv e sea t grinder .
NOTE : I f guide s ar e wor n (se e pag e 6-41 ), replac e
the m (se e pag e 6-42 ) befor e grindin g th e valv e seats .
2 . Carefull y grin d a 45 ° seat , removin g onl y enoug h
materia l t o ensur e a smoot h an d concentri c seat .
3 . Beve l th e uppe r edg e o f th e sea t wit h th e 30 ° stone .
Beve l th e lowe r edg e i t tw o angles .
Firs t grin d th e edg e wit h th e 60 ° stone , the n grin d
th e botto m edg e wit h th e 67.5 ° stone .
Chec k widt h o f sea t an d adjus t accordingly .
4 . Mak e on e mor e ver y ligh t pas s wit h th e 45 ° ston e t o
remov e an y possibl e burr s cause d b y th e othe r
stones .
Valv e Sea t Width :
Standar d (New) :
Intak e 0.8 0 - 1.0 0 m m (0.03 1 - 0.03 9 in )
Exhaus t 1.2 5 - 1.5 5 m m (0.04 9 - 0.06 1 in )
Servic e Limit :
Intak e 1. 5 m m (0.05 9 in )
Exhaus t 2. 0 m m (0.07 9 in )
SEA T WIDT H
5. Afte r resurfacin g th e seat , inspec t fo r eve n valv e
seating : Appl y Prussia n Blu e compoun d t o th e valv e
face , an d inser t valv e i n origina l locatio n i n th e head ,
the n lif t i t an d sna p i t close d agains t th e sea t sever -
a l times .
ACTUA L
SEATIN G
SURFAC E
VALVESEAT
PRUSSIA N BLU E COMPOUN D
6. Th e actua l valv e seatin g surface , a s show n b y th e
blu e compound , shoul d b e centere d o n th e seat .
• I f i t i s to o hig h (close r t o th e valv e stem) , yo u
mus t mak e a secon d cu t wit h th e 60 ° ston e t o
mov e it down , the n on e mor e cu t wit h th e 45 °
ston e t o restor e sea t width .
• I f i t i s to o lo w (close r t o th e valv e edge) , yo u mus t
make a secon d cu t wit h th e 30 ° ston e t o mov e
it up , the n on e mor e cu t wit h th e 45 ° ston e t o
restor e sea t width .
NOTE : Th e fina l cu t shoul d alway s b e mad e wit h
th e 45 ° stone .
7 . Inser t intak e an d exhaus t valve s i n th e hea d an d
measur e valv e ste m installe d height .
Valv e Ste m Installe d Heigh t (Intak e an d Exhaust) :
Standard (New) : 41.55-42.3 5 m m
(1.6358-1.667 3 in )
Servic e Limit : 42.43 5 m m (1.670 7 in )
VALV E STE M
INSTALLE D HEIGH T
8. I f valv e ste m installe d heigh t i s ove r th e servic e limit ,
replac e th e valv e an d recheck . I f stil l ove r th e servic e
limit , replac e th e cylinde r head ; th e valv e sea t i n th e
hea d is to o deep .
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Valve Guide s
Replacemen t
1. A s illustrate d below , us e a commerciall y availabl e
air-impac t valv e guid e drive r attachmen t modifie d t o
fi t th e diamete r o f th e valv e guides . I n mos t cases ,
th e sam e procedur e ca n b e don e usin g th e specia l
too l an d a conventiona l hammer .
IMPACT VALV E GUID E DRIVE R
(Commerciall y available )
orVALV E GUID E DRIVER , 5. 5 m m07742-0010100
2. Selec t th e prope r replacemen t guides , an d chil l the m
in th e freeze r sectio n o f a refrigerato r fo r abou t a n
hour .
3 . Us e a ho t plat e o r ove n t o evenl y hea t th e cylinde r
head t o 300° F (150°C) . Monito r th e temperatur e
with a cookin g thermometer .
CAUTION:
• D o no t us e a torch ; i t ma y war p th e head .
• D o no t ge t th e hea d hotte r tha n 30 0°F (150°C) ;
excessiv e hea t ma y loose n th e valv e seats .
• T o avoi d burns , us e heav y glove s whe n handlin g
th e heate d cylinde r head . 4
. Workin g fro m th e camshaf t side , us e th e drive r an d
a n ai r hamme r t o driv e th e guid e abou t 2 m m (0. 1 in )
toward s th e combustion chamber. Thi s wil l knoc k of f
som e o f th e carbo n an d mak e remova l easier .
CAUTION :
• Alway s wea r safet y goggle s o r a fac e shiel d
whe n drivin g valv e guides .
• Hol d th e ai r hamme r directl y i n lin e wit h th e
valv e guid e t o preven t damagin g th e driver .
5 . Tur n th e hea d over , an d driv e th e guid e ou t towar d
th e camshaf t sid e o f head .
VALV E GUID E DRIVER , 5. 5 m m07742-001010 0
If a valv e guid e stil l won' t move , dril l i t ou t wit h a
8 m m (5/1 6 inch ) bit , the n tr y again .
CAUTION : Dril l guide s onl y i n extrem e cases ; yo u
coul d damag e th e cylinde r hea d if th e guid e breaks .
6 . Remov e th e ne w guide s fro m th e freezer , on e a t a
time , a s yo u nee d them .
ProCarManuals.com

Valves, Valve Springs and Valve Seals

Installation Sequence

NOTE: Exhaust and intake valve seals are NOT interchangeable.

INTAKE VALVE SPRING
VALVE KEEPERS

VALVE SPRING

RETAINER

VALVE SPRING

EXHAUST VALVE SEAL

(BLACK SPRING)

Replace.

NOTE: Place the end of valve

spring with closely wound coils

toward the cylinder head.

INTAKE VALVE SEAL

(WHITE SPRING)

Replace.

SPRING SEAT

NOTE: Install the valve spring seats

before installing the valve seals.

VALVE SEAL INSTALLER

(Commercially available)

KD-2899

NOTE: Use small ID end of tool

VALVE SEAL

Replace.ProCarManuals.com

Seats
Replacemen t
NOTE:
• Befor e removin g th e seat , mov e th e sea t unti l yo u
can se e it s mountin g bolt s an d sea t moun t cove r
caps.
• Tak e car e no t t o scratc h th e sea t cover , interio r trim ,
dashboar d an d cente r armrest .
• O n reassembly , replac e th e lowe r ancho r bol t (* ) an d
use liqui d threa d lock .
1. Pr y ou t th e seat moun t cove r caps .
2 . Remov e th e sea t mountin g bolts , the n remov e th e
sea t an d disconnec t th e connector .
3 . Pr y ou t th e cap , an d remov e th e sea t bel t lowe r
ancho r bolt . Remov e th e seat .
SEAT MOUN T
COVE R CA P SEA
T
SEA T MOUNTIN G BOLT S
10 x 1.2 5 mm39 N- m (4. 0 kgf-m , 2 9 Ibf-ft )
CONNECTO R SEA
T MOUNTIN G
BOLTS10 x 1.2 5 mm39 N- m (4. 0 kgf-m ,
2 9 Ibf-ft )
SEA T BEL T
LOWE R ANCHO R
BOLT7/16-2 0 UN F
3 2 N- m (3. 3 kgf-m ,
2 4 Ibf-ft )
I f necessary , remov e th e powe r slid e cable , powe r
seat switc h an d sea t moun t cover .OUTER SLID E
BO X GEA R CLI
P
Pr y here .
HOO K
Pr y here .
POWE R SLID E CABL E
NOTE : Tak e car e no t t o
ben d th e cable .
4. Installatio n i s th e revers e o f th e remova l procedure .
POWER SEA T
SWITC H
Disconnec t th e connectors .
NOTE : Appl y greas e t o th e inne r an d oute r slid e
bo x gears .
SEAT MOUN T COVE R
CORROSIO
N RESISTAN T BOL T
CAP
INNE R SLID E
BO X GEA R
ProCarManuals.com

Seats
Seat Cove r Replacemen t
CAUTION: Wea r glove s t o remov e an d instal l th e sea t
cover .
NOTE :
• Tak e car e no t t o tea r th e seam s o r damag e th e
cover .
• Remov e th e powe r sea t switc h (se e pag e 20-39 ) an d
sea t bel t buckl e (se e pag e 20-43 ) fro m th e seat .
1 . Detac h th e clip s an d hook s fro m unde r th e seat .
Pul l th e sea t cove r back .
I: Cli p location s
SEA T COVE R
2. Detac h th e hook s whil e pullin g th e sea t cove r back .
SEAT COVE R
3. Detac h th e clip s fro m unde r th e seat , the n remov e
th e sea t cushion .
Clip location s
SEAT CUSHIO N
4. Remov e th e sea t bel t buckl e (se e pag e 20-43 ).
Detac h th e hook s a t bot h side s o f th e seat .
Remov e th e screw s a t bot h fron t edges .
SEAT COVE R
SCRE W
HOOKS
ADHESIV
E ARE A
HOOK S HOO
K (3 )
HOOK
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Seats

Seat Cover Replacement (cont'd)

7. Detach the hooks, then remove the seat-back

cushion.

HOOKS

8. Detach the clips, then remove the seat cover.

Clip locations

SEAT COVER
9. Installation is the reverse of the removal procedure.

NOTE:

• To prevent wrinkles when installing the seat

cover, make sure the material is stretched even-

ly over the frame before securing all the hooks

and clips.

• If necessary, replace any damaged clips.

• Before installing the seat cushion, scrape the old

adhesive smoothly from the seat cushion frame.

Clean the bonding surface with a sponge

dampened in alcohol.

Apply an adhesive to the shadowed area as

shown.

Forward

SEAT CUSHION

FRAME
SEAT-BACK

CUSHION

ADHESIVE AREAProCarManuals.com

SRS component s ar e locate d in thi s area . Revie w th e SR S componen t locations , precautions , an d procedure s in th e SR S
sectio n 24 befor e performin g repair s o r service .
UNDER-HOO D RELA Y BO X BBLOWE R MOTO R RELA Y
BLOWE R MOTO R HIG H RELA Y
COMPRESSO R CLUTC H RELA Y
POWER TRANSISTO R
BLOWE R MOTO R
RECIRCULATIO N
CONTRO L
MOTO R
CONDENSE R
FA N MOTO R UNDER-HOO
D RELA Y BO X A
(CONDENSE R FA N RELAY )
HEATER COR E TEMPERATUR E SENSO R
CLIMAT E CONTRO L UNI T VEN
T DOO R
CONTRO L MOTO R
OUTSID E AI RTEMPERATUR E SENSO R
A/C TRIPL E PRESSUR E SWITC H
ENGIN E COMPARTMEN T
FUSE/RELA Y BO X
FAN CONTRO L UNI T(Fan radiato r an d con -
dense r fan s insid e th e
vehicle , behin d seats )
EVAPORATO RTEMPERATUR E
SENSO R
MOD E CONTRO L
MOTO R
IN-CA R
TEMPERATUR E
SENSO R AI
R MI X CONTRO L MOTO R
UNDER-HOO
D
FUSE/RELAYBOX
SUNLIGH TSENSOR
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