length ACURA NSX 1997 Service Repair Manual

Overhaul (Cont'd )
Manual Steerin g
1 5 . Wra p th e spline d are a o f th e steerin g pinio n wit h
viny l tap e an d greas e th e surfac e o f th e tape .
16 . Slid e th e pinio n se t scre w ove r th e steerin g pinion ,
bein g carefu l no t t o damag e th e sealin g li p o f th e
dus t seal , the n remov e th e viny l tape .
18. Tur n th e pinio n shaf t righ t an d lef t severa l time s t o
se t it , the n loose n th e pinio n se t screw .
NOTE : B e sur e tha t th e pinio n gea r an d rac k gea r
ar e no t engaged .
19 . Instal l th e specia l too l ont o th e pinio n shaft . Attac h
a sprin g scal e t o th e too l an d pul l th e scale . Adjus t
th e pinio n se t scre w unti l th e gaug e read s 1. 5- 2. 5
N (0.15-0.25 kg, 0.33-0.55 Ib).
STEERIN G INSPECTIO N AR M07974-SD9000 0
LOCKNUT WRENC H07908-ME9000 0
17. Tighte n th e pinio n se t scre w t o a torqu e wrenc h
readin g (indicated )
of 9.4-10. 4 N-m (94-104kg -
cm, 84-9 3 Ib-in) .
NOTE : Th e abov e specificatio n is th e torqu e wrenc h
readin g (indicated ) whe n th e se t scre w is tightene d
usin g a torqu e wrenc h 2 5 c m (1 0 inches ) long . I f yo u
tighte n th e se t scre w usin g a torqu e wrenc h o f th e
differen t length , obtai n th e torqu e valu e usin g th e
followin g formulas .
LOCKNUT WRENC H07908-ME9000 0
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29. Instal l th e ne w boo t band s o n th e boo t an d ben d bot h
set s o f lockin g tabs .
30 . Lightl y ta p o n th e double d portion s t o reduc e thei r
height .
NOTE : Afte r assembling , slid e th e rac k righ t an d lef t
t o b e certai n tha t th e boot s ar e no t deforme d o r
twisted .
32 . Instal l th e gearbo x o n th e fron t crossbea m (se e
pag e 17-20 ).
33 . Chec k th e whee l alignmen t an d adjus t i f necessar y
(se e sectio n 18 ).
31
. I f th e tie-ro d end s wer e removed , instal l th e tie -
rod s o n th e righ t an d lef t rac k end s an d scre w the m
i n unti l th e threade d sectio n i s 1 1 m m (0. 4 in ) i n
length .
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3-2
Standards and Service Limits
MEASUREMENTSTANDARD (NEW)SERVICE LIMIT
CompressionCheck the engine with the Minimumstarter cranking Maximum variation
kPa (kgf/cm
2, psi)
980 (10.0, 142)
200 (2.0, 28)
Cylinder headWarpage
Height—150.95 – 151.05 (5.943 – 5.947)0.05 (0.002)—
CamshaftEnd play
Camshaft-to-holder oil clearance
Total runout
Cam lobe height M/T IN Primary Mid
Secondary
EX Primary Mid
Secondary
A/T IN Primary Mid
Secondary
EX Primary Mid
Secondary0.05 – 0.15 (0.002 – 0.006)
0.050 – 0.089 (0.002 – 0.004)
0.03 (0.0012) max.
37.086 (1.4601)
38.037 (1.4975)
37.326 (1.4695)
36.559 (1.4393)
37.398 (1.4724)
36.741 (1.4465)
37.266 (1.4672)
37.655 (1.4825)
37.504 (1.4765)
36.559 (1.4393)
37.398 (1.4724)
36.741 (1.4465)0.5 (0.02)
0.15 (0.006)
0.04 (0.0016)
—
—
—
—
—
—
—
—
—
—
—
—
ValveValve clearance IN EX
Valve stem O.D. IN EX
Stem-to-guide clearance IN EX0.15 – 0.19 (0.006 – 0.007)*3
0.17 – 0.21 (0.007 – 0.008)*3
5.475 – 5.485 (0.2156 – 0.2159)
5.45 – 5.46 (0.2146 – 0.2150)
0.025 – 0.055 (0.001 – 0.002)
0.05 – 0.08 (0.002 – 0.003)—
—
5.445 (0.2144)
5.42 (0.2134)
0.08 (0.003)
0.11 (0.004)
Valve seatWidth INEX
Stem installed height IN EX0.80 – 1.00 (0.031 – 0.039)
1.25 – 1.55 (0.049 – 0.061)
41.55 – 42.35 (1.6358 – 1.6673)
41.55 – 42.35 (1.6358 – 1.6673)1.5 (0.059)
2.0 (0.079)
42.435 (1.6707)
42.435 (1.6707)
Valve springFree length M/T IN Outer
Inner
EX
A/T IN EX43.23 (1.7020)*1
43.24 (1.7024)*2
39.79 (1.5665)*1
39.82 (1.5677)*2
46.00 (1.8110)*1
45.98 (1.8102)*2
44.59 (1.7555)*1
44.60 (1.7559)*2
47.40 (1.8661)*1
47.43 (1.8673)*2—
—
—
—
—
—
—
—
—
—
Valve guideI.D. IN and EX
Installed height IN and EX5.51 – 5.53 (0.2169 – 0.2177)
13.75 – 14.25 (0.541 – 0.561)5.53 (0.218)—
Rocker armArm-to-shaft Primary and Secondary IN and EXclearance Mid IN and EX0.025 – 0.052 (0.0010 – 0.0020)
0.024 – 0.053 (0.0009 – 0.0021)0.08 (0.003)
0.08 (0.003)
M/T: Manual Transmission A/T: Automatic Transmission
*1: NIHON HATSUJO made, *2: CHUO HATSUJO made.
*3: Measured between the rocker arm and camshaft.
Cylinder Head/Valve Train — Section 6
*04-NSX (61SW004)SEC03(01-16) 9/22/04 1:48 PM Page 3-2
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3-13
TDesign Specifications
(cont’d)
ITEMMETRICENGLISH
DIMENSIONSOverall length
Overall width
Overall height
Wheelbase
Track F/R
Ground clearance
Seating capacity4,425 mm 174.2 in
1,810 mm 71.3 in
1,170 mm 46.1 in
2,530 mm 99.6 in
1,510/1,540 mm 59.4/60.6 in
130 mm 5.1 in
2
WEIGHT (USA)
Single plate dry, diaphragm spring
Torque converter
239 cm
237.0 sq in
CLUTCHClutch M/T
A/T
Clutch lining area M/T
Gross Vehicle Weight Rating (GVWR)
NOTES
Gear reduction/DENSO
1.4 kW
12 V
30 seconds
Counterclockwise as viewed
from gear end
4.75 kg 10.47 lbs
ENGINEWater cooled, 4-stroke DOHC VTEC
gasoline engine
90 °V6-cylinder, transverse
93.0 x 78.0 mm 3.66 x 3.07 in
90.0 x 78.0 mm 3.54 x 3.07 in
3,179 cm
3(cc) 194 cu in
2,977 cm3(cc) 182 cu in
10.2
Belt driven DOHC
Forced and wet sump
Premium UNLEADED grade gasoline
with 91 Pump Octane Number
or higher
STARTERType/Make
Normal output
Nominal voltage
Hour rating
Direction of rotation
Weight
WEIGHT (CANADA)Gross Vehicle Weight Rating (GVWR)
Synchronized 6 speed forward 1 reverse
Electronically controlled
4-speed forward automatic 1 reverse
Direct 1 : 1Transmission M/T
A/T
Primary reduction
Manual AutomaticType
3.066 2.611
1.956 1.551
1.428 1.025
1.125 0.684
0.914—
0.717—
3.186 1.909Gear ratio 1st
2nd
3rd
4th
5th
6th
Reverse
Single helical gear
4.062 4.428
TRANSMISSION
Final reduction Gear type
Gear ratio
Type
Cylinder arrangement
Bore and strokeC32B1 engine
C30A1 engine
DisplacementC32B1 engine
C30A1 engine
Compression ratio
Valve train
Lubrication system
Fuel required
M/T 1,630 kg 3,593 lbs
A/T 1,655 kg 3,649 lbs
*04-NSX (61SW004)SEC03(01-16) 9/22/04 1:49 PM Page 3-13
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Driveshafts

Reassembly

1 3. Fit the rollers to the spider with their high shoulders

facing outward.

CAUTION.

• Reinstall the rollers in their original positions on

the spider.

• Hold the driveshaft assembly with the rollers up

to prevent them from falling off.

SPIDER

ROLLER

High shoulder faces

toward outside

14. Pack the joint with joint grease included in the new

joint hoot set.

Grease
Quantity:
120 - 130 g
(4.2-4.6
oz)
15. Fit the inboard joint onto the driveshaft.

CAUTION: Reinstall the inboard joint in the original

position on the rollers.

INBOARD JOINT

Align the roller holders with the

inboard joint as shown

below.

HOLDER

16. Adjust the length of the driveshafts to the figure

below, then adjust the boots to halfway between

full compression and extension. Bleed the air from

the boot, and check that the engs of the boot seat

are in the grooves of the joint and driveshaft.

Left Driveshaft

M/T: 501.0-506.0 mm (19.72-19.92 in)

A/T: 507.0-512.0 mm (19.96-20.16 in)

195.0
mm
(7.68
in)

Right Driveshaft

M/T and A/T: 542.0 - 547.0 mm (21.34-21.54 in)

195.0
mm
(7.68
in)
MarksProCarManuals.com

Steering Gearbo x
Inspectio n (cont'd )
7. Instal l th e boot s o n th e rac k en d wit h th e tub e clamps .
NOTE:
• Coa t th e rac k en d an d insid e o f th e boo t wit h th e
grease .
• Befor e installin g th e boot , b e sur e tha t th e pres -
sur e insid e of the boo t i s th e atmospheri c pres -
sure.
• Instal l th e boo t ban d wit h th e rac k i n th e straigh t
ahea d conditio n (righ t an d lef t tie-rod s ar e equa l
i n length) . 9
. I f th e tie-ro d end s wer e removed , instal l th e tie-rod s
o n th e righ t an d lef t rac k end s an d scre w the m in
until the threade d sectio n i s 1 1 m m (7/1 6 in ) i n
length .
10. Instal l th e gearbo x an d th e fron t crossbea m in th e
revers e orde r remova l (se e pag e 17-57 ).
11 . Chec k th e whee l alignmen t an d adjus t i f necessar y
(se e sectio n 18 ).
8 . Instal l th e ne w boo t band s o n th e boot , an d ben d
bot h set s o f lockin g tabs . Lightl y ta p o n th e double d
portion s t o reduc e thei r height .
NOTE : Afte r assembling , slid e th e rac k righ t an d
lef t t o b e certai n tha t th e boot s ar e no t deforme d o r
twisted .
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Wheel Alignmen t
Rear Whee l Alignmen t Adjustin g Procedur e
NOTE: NSX/NSX- T fou r whee l alignmen t require s th e
us e o f equipmen t designe d specificall y fo r fou r whee l
independen t suspension s an d capabl e o f immediat e
feedback.
1. Driv e th e vehicl e o n th e alignmen t rack .
2 . Chec k th e tir e pressur e an d rid e heigh t a s describe d
o n pag e 18-6 .
3 . Cente r th e steerin g wheel .
Toe
-1. Measur e th e lengt h o f th e threade d sectio n o n
th e righ t an d lef t to e contro l arms .
Standard : 4. 0 m m (3/1 6 in )
Differenc e betwee n righ t an d left :
1.0 m m (1/1 6 in) max .
LOCK NUT S54 N- m(5.5 kgf-m , 4 0 Ibf-ft )
TIE-RO D
LENGTH
Corrosio n resistan t bolt/nu t
-2. I f th e measuremen t i s ou t o f specification ,
loose n th e locknuts , an d adjus t th e rea r to e b y
turnin g th e righ t an d lef t tie-rods .
Camber
-1. Loose n th e self-lockin g nu t o n th e rea r lowe r
contro l ar m adjustin g point , the n adjus t th e
ca m positio n s o tha t th e righ t an d lef t gradua -
tion s o n th e adjustin g ca m ar e i n contac t wit h
groov e wall .
Graduatio n i n contac twith groov e wal l
SELF-LOCKIN G NU TReplace .123 N- m(12. 5 kgf-m , 9 0 Ibf-ft )
DIAL CENTE R
Corrosio n resistan t bolt/nu t
-2. Mar k th e ar m in th e positio n whic h align s wit h
the dia l cente r o f th e adjustin g cam .
4 . Measur e th e reading s fo r cambe r an d to e accordin g
t o th e alignmen t equipmen t manufacturer' s instruc -
tions .
5 . Adjus t th e cambe r an d to e a t th e sam e tim e o n on e
sid e o f th e vehicle . Repea t fo r th e othe r sid e o f th e
vehicle .
Rea r Specification s
Toe-in: 4. 0 1. 0 m m (3/1 6 1/1 6 in )
Camber : -1°30 ' 30 '
ADJUSTIN G CA M
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Roof
Roof Sid e Seal/Retaine r Replacemen t (cont'd )
9. I f th e ol d roo f sid e retaine r i s t o b e reinstalled , glu e
th e ne w EP T seale r t o it a s shown .
NOTE : B e carefu l no t t o touc h th e roo f sid e retaine r
wher e th e EP T seale r wil l b e applied .
EPT SEALE RLength: 44 5 m m (17. 5 in )
Width : 1 0 m m (0.3 9 in )
Thickness : 1 0 m m (0.3 9 in )
EP T SEALE RLength: 1 5 m m (0.5 9 in )Width : 2 5 m m (0.9 8 in )Thickness : 5 m m (0. 2 in )
EP T SEALE RLength: 7 5 m m (3. 0 in )Width : 1 0 m m (0.3 9 in )Thickness : 3 m m (0. 1 in )
10. I f th e ol d roo f sid e sea l i s t o b e reinstalled , scrap e
th e ol d buty l tap e fro m eac h en d of it, the n clea n
eac h en d wit h alcohol . Glu e th e ne w buty l tap e o n
eac h en d a s shown .
Buty l tap e thickness : 0. 5 m m (0.0 2 in )
BUTY LTAPEROO F SID ESEA L(Fron t portion )
BUTYLTAPE
ROO F SID ESEA L(Rea r portion )
11. Instal l th e roo f sid e retainer .
NOTE :
• B e carefu l no t t o touc h th e roo f sid e retaine r
where sealan t wil l b e applied .
• Alig n eac h en d o f th e roo f sid e retaine r wit h th e
roo f corne r edges .
Screw locations , 3
Align .
Align.ROOF SID ERETAINE R
12. Glu e th e ne w EP T seale r o n th e roo f a s shown .
EPT seale r thickness : 3. 0 m m (0.1 2 in )
Front :
ROOF
Rear :
ROOF
ROOF SID ERETAINE R
EPTSEALE R
ROOF SID EHOO K
EPTSEALE R
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Starter Brus h Holde r Tes t
1. Chec k tha t ther e i s n o continuit y betwee n th e
and brus h holders .
I f continuit y exists , replac e th e brus h holde r
assembly .
BRUSH HOLDE R BRUSH HOLDE R
BRUSH HOLDE RBRUSH HOLDE R
2. Inser t th e brus h int o th e brus h holder , an d brin g th e
brus h int o contac t wit h th e commutator , the n at -
tac h a sprin g scal e t o th e spring . Measur e th e
sprin g tensio n a t th e momen t th e sprin g lift s of f th e
brush .
Spring Tension :
18.0-24.0 N (1.80-2.4 0 kg , 4.0-5. 3 Ibs )
SPRIN G SCAL E
BRUS H
SPRIN G
Starter Brus h Inspectio n
Measure th e brus h length . I f no t withi n th e servic e limit ,
replac e th e armatur e housin g an d brus h holde r
assembly .
Brus h Lengt h
Standar d (New) : 15.0-15. 5 m m (0.59 1 -0.61 0 in )
Servic e Limit : 10. 0 m m (0.39 4 in )
BRUS H
NOTE : T o sea t ne w brushe s afte r installin g the m i n
their holders , sli p a stri p o f #50 0 o r #60 0 sandpaper ,
with th e gri t sid e up , ove r th e commutator , an d
smoothl y rotat e th e armature . Th e contac t surfac e o f
th e brushe s wil l b e sande d t o th e sam e contou r a s th e
commutator .
23-83
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Rectifier Test

NOTE: The diodes are designed to allow current to

pass in one direction while blocking it in the opposite

direction. Since the alternator rectifier is made up of

eight diodes (four pairs), each diode must be tested for

continuity in both directions with an ohmmeter that has

diode checking capability; a total of sixteen checks.

1. Check for continuity in each direction, between the

B and P, and between the E (ground) and P ter-

minals of each diode pair. All diodes should have

continuity in only one direction.

E (GROUND)

2. If any of the eight diodes fails, replace the rectifier

assembly. (Diodes are not available separately.)
Alternator Brush Inspection

1. Remove the end cover, then take out the brush

holder by removing its two screws.

2. Measure the length of the brushes with a vernier

caliper.

Alternator Brush Length:

Standard: 10.5 mm (0.41 in)

Service Limit: 3.5 mm (0.14 in)

ALTERNATOR BRUSHES

VERNIER CALIPER

If the brushes are less than the service limit,

replace the assembly.ProCarManuals.com