1997 ACURA NSX Service Repair Manual

Intermediate Shaf t
Reassembl y
1. Pres s th e intermediat e shaf t bearin g int o th e bear -
in g suppor t usin g th e specia l tool s an d a press .
Press
DRIVE R07749 - 001000 0
OIL SEA L DRIVE R07GAD - PG4010 0
BEARINGReplace .
HUB DIS/ASSEMBL YBASE07GA F - SD4070 0
2 . Sea t th e interna l circli p i n th e groov e o f th e bearin g
support .
CAUTION : Instal l th e circli p wit h the radiuse d sid e
facin g out .
INTERNA L CIRCLI P
3. Pres s th e intermediat e shaf t inne r sea l int o th e
bearin g suppor t usin g th e specia l tool s an d a press .
Press
SEAL DRIVE RATTACHMEN T07JAD - SH3010 A
DRIVER07749 - 001000 0
(3-4 g)INNE R SEA LReplace .
HUB DIS/ASSEMBL YBASE07GAF - SD4070 0
4. Pres s th e intermediat e shaf t int o th e shaf t bearin g
using th e specia l tool s an d a press .
Press
INTERMEDIAT E SHAF T
HUB ASSEMBL Y GUID EATTACHMEN T07GAF - SE0020 0Fit th e inne r rac eof th e bearing .
HUB DIS/ASSEMBL Y BAS E07GA F - SD4070 0
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5. Sea t th e externa l circli p i n th e groov e o f th e in -
termediat e shaft .
CAUTION : Instal l th e circli p wit h the radiuse d sid e
facin g out .
EXTERNA LCIRCLIP
6. Pres s th e oute r sea l int o th e bearin g suppor t usin g
th e specia l tool s an d a press .
Press
PINIO N COVE RDRIVER ATTACHMEN T07LAD - PW5050 0
DRIVER07749-001000 0
HUB DIS/ASSEMBL Y BAS E07GA F - SD4070 0
16-17
OUTE R SEA LReplace .
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Special Tool s
17-53
17-6 1
17-23
17-59, 17-42
17-58
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Component Location s
Index
NOTE :
• I f a n intac t airba g assembl y ha s bee n remove d fro m a scrappe d vehicl e o r ha s bee n foun d defectiv e o r damage d durin g
transit , storag e o r service , i t shoul d b e deploye d (se e sectio n 24 ).
• Befor e removin g th e gearbox , remov e th e ignitio n ke y t o loc k th e steerin g shaft .
• Afte r installin g th e gearbox , chec k th e whee l alignmen t an d adjus t i f necessary .
STEERING GEARBO XRemoval/Installation , pag e 17-5 3
Illustrate d Index , pag e 17-5 7
Pinio n Preloa d Inspection , pag e 17-5 8
Rac k Guid e Scre w Adjustment , pag e 17-5 8
STEERIN
G COLUM N
Removal , pag e 17-4 7
Inspection , pag e 17-4 9
Installation , pag e 17-5 0
STEERIN G WHEEL /AIRBAG ASSEMBL YRemoval, pag e 17-4 3
Disassembly , pag e 17-4 4
Installation , pag e 17-4 5
EP
S CONTRO L UNI T
Replacement , pag e 17-62
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System Description

Steering Column

The NSX/NSX-T has a tilt/telescopic steering column. The tilt/telescopic mechanism makes it possible to adjust the steer-

ing wheel in fore and aft, and up and down directions.

Tilt Mechanism

In the upper portion of the steering column is a joint on the steering shaft. This joint allows the steering wheel to be

adjusted
up or
down. When
the
tilt
lever
is
operated,
the
lock gears
are
detached
from
the
column
gear
to
release
the
lock.

The column moves upward or downward on two pivot bolts. When the tilt lever is returned to a fixed position after select-

ing the steering wheel height, the lock gear is engaged with the column gear to secure the column.ProCarManuals.com

Telescopic Mechanism

The upper steering shaft is divided into two shafts, connected by splines, making it possible for the shaft to telescope

while transmitting the rotation of the steering wheel. When the telescopic lever is lowered, the lever pivot turns in a direc-

tion to loosen the stop shim at the tip of the lever pivot, allowing the shaft to telescope. The telescopic stroke is limited by

the slot and stop on the movable shaft. After selecting a steering wheel position and locking the telescopic lever, the stop

shim presses, against the movable shaft, holding it in position.ProCarManuals.com

System Descriptio n
Energy-absorbin g Steerin g Column/Whee l
Both th e steerin g colum n an d steerin g whee l ar e designe d to absor b impac t energ y durin g a collision .
Steerin g Whee l
Th e steerin g whee l absorb s th e energ y o f a collisio n throug h th e deformatio n o f th e spok e portion . Shoul d th e impac t
absorbin g capacit y o f th e colum n sid e decreas e du e to th e deformatio n o f th e vehicl e bod y durin g a collision , th e steerin g
whee l wil l hel p absor b th e impact .
Steerin g Colum n
Th e steerin g colum n is fastene d o n th e bod y throug h a U-shape d plate , an d th e lowe r par t o f th e colum n is inserte d int o a
lowe r holder . Du e t o thi s construction , th e steerin g colum n wil l slid e in it s axia l directio n whe n a larg e impac t i s give n i n
th e axia l directio n o f th e column . Sinc e th e U-shape d plat e i s fastene d t o th e body , th e U-shape d plat e i s ben t an d
deforme d alon g th e guid e whe n th e colum n slide s i n it s axia l direction . Throug h th e deformatio n o f th e plate , th e energ y
i s absorbe d an d th e colum n slide s forward . Whe n expose d t o a greate r impact , a shea r pi n wil l brea k an d th e energ y i s
absorbe d b y th e lowe r shaft .
The U-plate s absor b a n energ ywhile the y ar e straightene d b ythe uppe r bracket .
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Electrical Powe r Steerin g (EPS )
Outlin e
The NSX/NSX- T use s a n electri c motor-drive n powe r steering , whic h possesse s th e characteristic s bes t suite d fo r a mid -
engin e automobile . Thi s syste m is a power-assiste d steerin g device , wit h a moto r insid e th e steerin g gearbo x drive n b y
th e EP S contro l unit . It s distinctiv e feature s ar e describe d below :
• Minimize d los s o f engin e horsepowe r an d decrease d fue l consumption .
• A linea r steerin g fee l an d th e reductio n o f kickback .
• Th e syste m is compac t an d lightweigh t becaus e it require s n o complicate d hydrauli c piping , etc .
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