tow ACURA NSX 1991 Service Owner's Manual

Mainshaft Thrus t Shi m
Adjustmen t
7. Instal l th e bal l bearin g ont o th e mainshaf t usin g th e
specia l tools , the n instal l th e 7 5 m m sprin g washe r
an d mainshaf t assembl y int o th e clutc h housing .
DRIVER, 4 0 m m I.D .07746 - 0030100
ATTACHMENT , 3 5 m m I.D .07746 - 0030400
BAL L BEARIN G
8. Instal l th e transmissio n housing .
Torque : 4 5 N- m (4. 5 kg-m , 3 3 Ib-ft )
9. Chec k th e thrus t clearanc e in th e manne r describe d
below.
NOTE : Carr y ou t th e measuremen t a t norma l roo m
temperature .
a . Slid e th e mainshaf t bas e ove r th e mainshaft ,
b . Attac h th e mainshaf t holde r t o th e mainshaf t a s
follows :
• Back-ou t th e mainshaf t holde r bol t an d
loose n th e tw o he x bolts .
• Fi t th e holde r ove r th e mainshaf t s o it s li p i s
toward s th e transmission .
• Alig n th e mainshaf t holder' s li p aroun d th e
groov e a t th e insid e of the mainshaf t splines ,
then tighte n th e he x bolts .
HEX BOL T
MAINSHAFT
HOLDER BOL T
MAINSHAF THOLDER07GAJ - PG20110
MAINSHAF T BAS E07GAJ - PG20130
c. Sea t th e mainshaf t full y b y tappin g it s en d
wit h a plasti c hammer .
d . Threa d th e mainshaf t holde r bol t i n unti l i t
jus t contact s th e wid e surfac e o f th e main -
shaf t base .
e . Zer o a dia l gaug e o n th e en d o f th e mainshaft .
DIAL GAUG E
f. Tur n th e mainshaf t holde r bol t clockwise ; sto p
turnin g whe n th e dia l gaug e ha s reache d it s
maximu m movement . Th e readin g o n dia l
gauge i s th e amoun t o f mainshaf t en d play .
CAUTION : Turnin g th e shaf t holde r bol t mor e
tha n 6 0 degree s afte r th e needl e o f th e dia l
gaug e stop s movin g ma y damag e th e
transmission .
g. I f th e readin g i s withi n th e standard , th e
clearanc e is correct .
I f th e readin g i s no t withi n th e standard , rechec k
th e shi m thickness .
Standard :
0.14-0.21 mm (0.006-0.00 8 in)
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Driveshafts
Reassembl y
Outboard join t sid e
NOTE : Wra p th e spline s wit h viny l tap e t o preven t
damag e t o th e boot .
1 . Instal l th e outboar d boo t t o th e driveshaft , the n
remov e th e viny l tape .
OUTBOAR D BOO T
VINY L TAP E
2. Instal l th e se t rin g int o th e driveshaf t groove .
3 . Instal l th e spide r o n th e driveshaf t b y alignin g th e
mark s o n th e spide r an d en d o f th e driveshaft .
4 . Instal l th e se t rin g int o th e driveshaf t groove .
SET RIN G
Mar k
Mark
SPIDE R
SE T RIN G
5. Fi t th e roller s to th e spide r wit h thei r hig h shoulder s
facing outward .
CAUTION :
• Reinstal l th e roller s in thei r origina l position s o n
th e spider .
• Hol d th e driveshaf t assembl y pointe d u p t o pre -
ven t th e roller s fro m fallin g off .
SPIDE R
ROLLE RHigh shoulde r face stowar d outside .
6. Pac k th e join t wit h join t greas e include d in th e ne w
join t boo t set .
Greas e Quantity : 17 0 - 18 0 g (6.0-6. 3 oz)
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Driveshafts
Reassembl y
13. Fi t th e roller s t o th e spide r wit h thei r hig h shoulder s
facin g outward .
CAUTION :
• Reinstal l th e roller s i n thei r origina l position s o n
the spider .
• Hol d th e driveshaf t assembl y wit h th e roller s u p
to preven t the m fro m fallin g off .
SPIDE R
ROLLE RHigh shoulde r face stowar d outside .
14. Pac k th e join t wit h join t greas e include d in th e ne w
join t boo t set .
Greas e Quantity : 120-130 g (4.2-4. 6 oz)
1 5 . Fi t th e inboar d join t ont o th e driveshaft .
INBOARD JOIN T
Align th e rolle r holder s wit h th einboar d join t a s show nbelow.
HOLDE R
16. Adjus t th e lengt h o f th e driveshaft s t o th e figur e
below , the n adjus t th e boot s t o halfwa y betwee n
ful l compressio n an d extension .
NOTE : Th e end s o f th e boot s sea t i n th e groove s
o f th e driveshaf t an d joint .
Left Driveshaf tM/T: 501.0-506. 0 m m (19.72-19.9 2 in )A/T : 507.0-512. 0 m m (19.96-20.1 6 in )
Righ t Driveshaf tM/T an d A/T : 542.0-547. 0 m m (21.34-21.5 4 in )
Splin edirectio n
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Intermediate Shaf t
Replacemen t
1. Drai n th e oi l fro m th e transmissio n (se e sectio n 1 3
M/ T o r sectio n 1 4 A/T) .
2 . Remov e th e righ t driveshaf t assembl y (se e pag e
16-3).
3 . Remov e th e hea t shield .
Corrosio n resistan t bolt/nu t
FLANG E BOL T
6 x 1. 0 m m10 N- m(1.0 kg-m , 7 Ib-ft )
HEA T SHIEL D
4. Th e bearin g suppor t assembl y i s a ligh t pres s fi t i n
th e suppor t base . T o remov e th e bearin g suppor t
assembly , remov e th e 8 x 1.2 5 m m flang e bolt s
with the suppor t bas e stil l attache d t o th e engin e
block. Ta p th e flange d sectio n of the bearin g sup -
port wit h a plasti c hamme r towar d th e whee l side ,
then remov e th e bearin g suppor t assembl y fro m
th e suppor t base .
CAUTION : T o preven t damag e t o th e differentia l
oi l seal , hol d th e intermediat e shaf t horizonta l unti l
i t i s clea r o f th e differential . NOTE
: Mar k th e suppor t bas e an d bearin g suppor t
durin g disassembl y t o ensur e prope r positionin g
durin g reassembly .
CAUTION : Th e bearin g suppor t an d suppor t bas e
ar e mad e o f aluminum . B e carefu l no t t o damag e
the m whe n servicing .
Corrosion resistan t bolt/nu t
SUPPOR T BAS E
MarkMar k
BEARIN G SUPPOR T
ASSEMBL Y
Lightly ta p th e suppor t bas e usin ga plasti c hammer .
5. Remov e th e suppor t bas e fro m th e engin e block .
FLANG E BOL T8 x 1.2 5 mm22 N- m(2.2 kg-m , 1 6 Ib-ft )
SUPPOR T BAS E
6. Instal l i n th e revers e orde r o f removal . Alig n th e
marks , an d instal l b y tappin g o n th e bearin g suppor t
assembl y shaf t end .
Shaftend
FLANG E BOL T8 x 1.2 5 mm22 N- m(2.2 kg-m . 1 6 Ib-ft )
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Steering Gearbox

Removal/Installation

NOTE: Before removing the steering gearbox, make
sure the front wheels are straight ahead. 1. Remove the steering joint cover.

STEERING JOINT COVER
7. Install the 10 mm hex nut on the balt joint. Be sure
that the 10 mm hex nut is flush with the ball joint
pin end, or the threaded section of the ball joint pin
might be damaged by the ball joint remover.
NOTE: Remove
the
ball
joint
using
the
ball
joint
remover, 28 mm. Refer to page 18-21('93-'96),('91-'92)

for how to use the ball joint remover.
8. Separate the tie-rod ball joint and knuckle using the
special tool.
CAUTION: Avoid damaging the ball joint boot.

NOTE: If necessary, apply penetrating type lubri-

cant to loosen the ball joint.

BALL JOINT REMOVER. 28 mm

07MAC–SL00200

CASTLE NUT

44 N·m (4.4 kg-m, 32 Ib-ft)

10 mm HEX NUT

CLAMP

CLIP
COTTER PIN

Replace.

On reassembly, bend

the cotter pin as shown.

Corrosion resistant bolt/nut

9. Remove the folding spare tire and spare tire holder plate,
10. Disconnect the battery negative terminal, then dis- connect the positive terminal and remove the bat-
tery.

11. Remove the spare tire holder and floor under cover.

FLOOR UNDER

COVER
10 N·m

(1.0kg-m, 7lb-ft)

SPARE TIRE

HOLDER

2, Remove the steering joint bolts, and disconnect the
steering joint by moving the joint toward the col-
umn.
STEERING JOINT

TOOTHED LOCK

WASHERS

STEERING JOINT BOLTS

22 N·m (2.2 kg-m, 16 Ib-ft)

3. Lock the steering shaft with ignition key to keep the steering shaft position.
4. Raise the front of the car, and place safety stands in the proper locations (see section 1).
5. Remove the front wheels.
6. Remove the cotter pin from the castle nut, and remove
the
nut.
8 x
1.25
mm

BOLT

WASHERS

25 N·m

(2.5 kg-m, 18 lb-ft)

Corrosion resistant bolt/nut
(cont'd)ProCarManuals.com

Rear Damper

Removal

1. Remove the rear wheels.

2. Remove the lower rear hatch glass trim.

REAR HATCH GLASS

TRIM

3. For NSX-T, remove the engine cover support rod

from the strut brace, then position the end of the rod

on the window lock mechanism to support the

engine cover.

NOTE: To prevent damage to the window lock

mechanism, place a shop towel over the mechanism.

STRUT BRACE
ENGINE

COVER

SUPPORT ROD

WINDOW LOCK MECHANISM

SHOP TOWEL
4. Remove the three self-locking nuts.

5. Remove the rear strut brace.

STRUT BRACE
SELF-LOCKING NUT

10 x
1.25
mm

Replace.

Corrosion resistant bolt/nut

6. Hold the damper lower mount of stabilizer link with

a wrench, then remove the damper mounting nut.

7. Hold the ball pin of the stabilizer link with a hex

wrench, then loosen the self-locking nut.

DAMPER MOUNTING NUT

12 x
1.25
mm

Replace.

95 N-m (9.5 kg-m, 69 Ib-ft)

WRENCH

HEX WRENCH

STABILIZER LINK

SELF-LOCKING NUT

12 x
1.25
mm

Replace.

85 N-m (8.5 kg-m, 61 Ib-ft)

Corrosion resistant bolt/nutProCarManuals.com

Front Brake s
Index/Inspectio n
• 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 .
• Contaminate d brak e disc s o r pad s reduc e stoppin g
ability .
NOTE :
• Coa t piston , pisto n seal , an d calipe r bor e wit h clea n
brake fluid .
• Replac e al l rubber parts wit h ne w one s wheneve r
disassembled .
CAUTION:
• D o no t spil l brak e flui d o n th e car ; i t ma y damag e
th e paint ; i f brak e flui d doe s contac t th e paint ,
was h i t of f immediatel y wit h water .
• T o preven t spills , cove r th e hos e joint s wit h rag s
o r sho p towels .
• Clea n al l part s in brak e flui d an d ai r dry ; blo w ou t
al l passage s wit h compresse d air .
• Befor e reassembling , chec k tha t al l part s ar e
fre e o f dus t an d othe r foreig n particles .
• Replac e part s wit h ne w one s wheneve r
specifie d t o d o so .
• Mak e sur e n o dir t o r othe r foreig n matte r i s
allowe d t o contaminat e th e brak e fluid .
• D o no t reus e th e draine d fluid . Us e onl y clea n
DO T 3 o r 4 brak e fluid .
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Front Calipe r
Disassembl y
• 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 .
CAUTION :
• D o no t spil l brak e flui d o n th e car ; i t ma y damag e th e
paint ; i f brak e flui d doe s contac t th e paint , was h i t
of f immediatel y wit h water .
• T o preven t spills , cove r th e hos e joint s wit h rag s o r
sho p towels .
• Clea n al l part s i n brak e flui d an d ai r dry ; blo w ou t al l
passage s wit h compresse d air .
1 . Remov e th e banj o bolt , an d disconnec t th e brak e
hos e fro m th e caliper .
2. Remov e th e calipe r mountin g bolts , the n remov e
the caliper .
3 . Remov e th e pa d sprin g fro m th e calipe r body . 4
. I f necessary , appl y compresse d ai r t o th e calipe r
fluid inle t t o ge t th e piston s out . Plac e a sho p ra g o r
woode n bloc k a s show n t o cushio n th e piston s
when ther e ar e expelled . Us e lo w pressur e ai r i n shor t
spurts .
• D o no t plac e you r finger s i n fron t o f th e piston .
• D o no t us e hig h ai r pressure ; us e a n OSHA -
approve d 3 0 PS I nozzle .
5 . Remov e th e pisto n boot s an d pisto n seals .
CAUTION : Tak e car e no t t o damag e th e cylinders .
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Master Cylinder

Inspection

CAUTION:

• Be careful not to bend or damage the brake pipes when removing the master cylinder.

• Do not spill brake fluid on the car; it may damage the paint; if brake fluid does contact the paint, wash it off immediate-

ly with water.

• To prevent spills, cover the hose joints with rags or shop towels.

• Before reassembling, check that all parts are free of dust and other foreign particles.

• Do not try to disassemble the master cylinder assembly. Replace the master cylinder assembly with a new part if

necessary.

• Make sure no dirt or other foreign matter is allowed to contaminate the brake fluid.

• Do not reuse the drained fluid. Use only clean DOT3 or 4 brake fluid.

• When connecting the brake pipes, make sure that there is no interference between the brake pipes and other parts.ProCarManuals.com

Rear Brakes

Torque/Inspection

• Never use an air hose or dry brush to clean brake

assemblies.

• Use an OSHA-approved vacuum cleaner to avoid

breathing brake dust.

• Contaminated brake discs or pads reduce stopping

ability.
CAUTION:

• Do not spill brake fluid on the car; it may damage

the paint; if brake fluid does contact the paint,

wash it off immediately with water.

• To prevent spills, cover the hose joints with rags

or shop towels.

• Clean all parts in brake fluid and air dry; blow out

all passages with compressed air.

• Before reassembling, check that all parts are

free of dust and other foreign particles.

• Replace parts with new ones whenever

specified to do so.

• Make sure no dirt or other foreign matter is

allowed to contaminate the brake fluid.

• Do not reuse the drained fluid. Use only clean

DOT3 or 4 brake fluid.

NOTE:

• Coat piston, piston seal, and caliper bore with

clean brake fluid.

• Replace all rubber parts with new ones

whenever disassembled.ProCarManuals.com