1991 ACURA NSX Service Repair Manual

Front Dampe r
Inspectio n
SELF-LOCKIN G NU T10 x 1.2 5 mmReplace .
3 0 N- m (3. 0 kg-m . 2 2 Ib-ft )
DAMPE R MOUNTIN GRUBBER
SELF-LOCKIN GNUT10 x 1.2 5 mmReplace .44 N- m(4.4 kg-m , 3 2 Ib-ft )
DAMPE R MOUNTIN G
BASE
DAMPE R MOUNTIN G WASHE R
Chec k fo r weakness .
DAMPE R MOUNTIN G
COLLAR
DAMPE R MOUNTIN GRUBBER
DUST COVE R PLAT E
DUS T COVE R EN D
DUS T COVE R
Chec k fo r damage .
SPRIN G MOUNTIN G RUBBE R
Chec k fo r damage .
DAMPER STO P
PLAT E
BUMP STO P
Chec k fo r weaknes s an d
damage .
DENT in DAMPE R
DAMPE R SPRIN G
Chec k fo r weakness ,
compression an d damage .
DAMPER UNI T
• Chec k fo r leak s an d
fault y operation .• Chec k fo r rust .
8 m m FLANG E NU T
13 N- m(1.3 kg-m , 9 Ib-ft )
Corrosio n resistan t bolt/nu t BRAK
E HOS E
BRACKE TNOTE: Alig n th e brak ehose bracke t bol t wit hthe den t i n th e damper ,then loosel y tighte n th ebrak e hos e bracket . Se t
th e brak e hos e bracke t
a t th e cente r o f it s wob -
bling rang e an d tighte nthe nu t securely .
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Reassembly
1. Instal l th e dampe r uni t o n a sprin g compressor .
2 . Assembl e th e dampe r i n revers e orde r o f remova l
excep t th e dampe r mountin g washe r an d self -
lockin g nut .
NOTE : Alig n th e botto m o f dampe r sprin g an d spr -
in g lowe r sea t a s shown .
3 . Positio n th e dampe r mountin g bas e o n th e dampe r
unit a s shown .
NOTE: Follo w th e manufacturer' s instructions .
LEFTFron tRIGH T
Uppe r vie w
17°30 ' ± 3°Bracke tposition
18°30' ± 3°
Stu d bol t
positio n
17°30' ± 3 °Bracke tposition
Mountin g bol tdirectio n
STRUT SPRIN G COMPRESSOR :
(Commerciall y available )
BRANICK ® T/ N MST-580 A
o r equivalen t
18°30" ± 3 °
Stu d bol t
positio n
Mountin g bol tdirectio n
SPRING LOWE R SEA T
4. Compres s th e dampe r spring .
CAUTION : D o no t compres s th e sprin g mor e tha n
necessar y t o instal l th e nut .
5 . Instal l th e dampe r moun t washe r an d a ne w self -
lockin g nut .
6. Hol d th e dampe r shaft , the n tighte n th e self-lockin g
nut.SELF-LOCKIN G NU T10 x 1.2 5 mmReplace .
3 0 N- m (3. 0 kg-m , 2 2 Ib-ft )
Installatio n
1. Repositio n th e dampe r o n th e fram e wit h th e weld -
e d nu t o f th e hos e bracke t facin g outsid e a s
shown .
DAMPE R
MOUNTIN G BOL T BRAK
E HOS E MOUNTIN G BOL T
2 2 N- m (2. 2 kg-m . 1 6 Ib-ft )
SELF-LOCKIN G NU T
12 x 1.2 5 mmReplace .
9 5 N- m (9. 5 kg-m . 6 9 Ib-ft )
Corrosio n resistan t bolt/nu t
2. Instal l th e dampe r en d o n th e lowe r arm , the n loosel y
tighten th e mountin g nut .
NOTE : Th e bolt s an d nut s shoul d b e tightene d
with the vehicle' s weigh t o n th e damper .
3. Secur e th e dampe r mountin g bol t usin g a ne w self -
lockin g nut .
4 . Secur e th e dampe r assembl y t o th e fram e wit h th e
ne w thre e self-lockin g nuts .
5 . Instal l th e cap s i n th e to p o f th e cowl .
CAPSELF-LOCKIN G NU T10 x 1.2 5 mmReplace .44 N- m (4. 4 kg-m , 3 2 Ib-ft )
Corrosio n resistan t bolt/nu t
6. Instal l th e brak e hos e mountin g bolt .
DAMPE RMOUNTIN G WASHE R
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Rear Suspension

Torque Specifications

CAUTION:

• Replace the self-locking nuts after removal.

• Replace the self-locking bolts if you can easily thread a non-self-locking nut past their nylon locking inserts. (It should

require 1 N-m (0.1 kg-m, 0.7 Ib-ft) of torque to turn the test nut on the bolt).

• The vehicle should be on the ground before any bolts or nuts connected to rubber mounts or bushings are tightened.

• Torque the castle nut to the lower torque specification, then tighten it only far enough to align the slot with the pin

hole. Do not align the nut by loosening.

NOTE: Wipe off the dirt, oil or grease on the threads before tightening the fasteners.

Corrosion resistant bolt/nut

SELF-LOCKING NUT

10 x
1.25
mm

Replace

54 N-m (5.4 kg-m, 39 Ib-ft)
FLANGE BOLT

12 x
1.25
mm

95 N-m
(9.5
kg-m,

69 Ib-ft)

SELF-LOCKING NUT

12 x
1.25
mm

Replace.

85 N-m

(8.5 kg-m, 61 Ib-ft)

SELF-LOCKING NUT

14 x 1.5 mm

Replace.

125 N-m

(12.5 kg-m, 90 Ib-ft)

FLANGE BOLTS

10 x
1.25
mm

60 N-m

(6.0 kg-m, 43 Ib-ft)
CASTLE NUT

10 x
1.25
mm

40-48
N-m
(4.0-4.8
kg-m,

29-35
lb-ft)

CASTLE NUT

12 x
1.25
mm

55-65
N-m

(5.5-6.5
kg-m,
40-47
Ib-ft)

SPINDLE NUT

26 x 1.5 mm

Replace.

335 N-m (33.5 kg-m, 242 Ib-ft)

NOTE: After tighten-

ing, use a drift to

stake the spindle nut

shoulder against the

driveshaft.

SELF-LOCKING NUT

14 x 1.5 mm

Replace.

125 N-m

(12.5 kg-m, 90 Ib-ft)
CASTLE NUT

12 x
1.25
mm

55-65 N-m

(5.5-6.5
kg-m,
40-47
Ib-ft)
DAMPER MOUNTING NUT

12 x
1.25
mm

Replace.

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

CALIPER BRACKET

MOUNTING BOLT

110 N-m

(11 kg-m, 80 Ib-ft)ProCarManuals.com

Hub Replacemen t
NOTE:
• Us e onl y genuin e Hond a whee l weight s fo r aluminu m wheels . Non-genuin e whee l weight s ma y corrod e an d damag e
the aluminu m wheels .
• O n th e aluminu m wheels , remov e th e cente r cap from insid e o f th e whee l afte r removin g th e wheel .
• Befor e installin g th e brak e disc , clea n th e matin g surfac e o f th e rea r hu b an d insid e o f th e brak e disc .
• 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 o f th e wheel .
Corrosio n resistan t bolt/nu t
FLANG E BOL T
10 x 1.2 5 mm65 N- m (6. 5 kg-m ,47 Ib-ft )
KNUCKL E
SPLASH GUAR D
HU B BEARIN G
ASSEMBL YInspect fo r fault ymovemen t an d wear .
Replacement , pag e 18-3 3
WHEEL NU T
12 x 1. 5 m m110 N- m (1 1 kg-m ,80 Ib-ft )
REA R HU B UNI T
Chec k fo r damag e an d
cracks .
Replacement , pag e 18-3 3
BRAK E DIS C
Chec k fo r wea r an d
rust .Inspection ,Section 19 .
FLAT HEA D SCRE W
6 x 1. 0 m m10 N- m (1. 0 kg-m ,7 Ib-ft ) CENTE
R CA P
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Rear Suspensio n
Hub Replacemen t
1. Remov e th e cente r cap , the n pr y th e spindl e nu t
loc k ta b awa y fro m th e spindl e an d loose n th e nut .
2 . Rais e th e car , an d suppor t i t wit h safet y stand s (se e
Sectio n 1 ).
WHEE L NU T110 N- m(11 kg-m , 8 0 Ib-ft )
SPINDL E NU T26 x 1. 5 m mReplace .NOTE: Afte r tightening , us e a drif tto stak e spindl e nu t shoulde ragainst th e driveshaft .
3. Remov e th e rea r wheels .
NOTE : Befor e installin g th e wheel, clean th e
matin g surface s o f th e brak e dis c an d insid e o f th e
wheel .
4. Remov e th e spindl e nut .
5 . Remov e th e whee l senso r fro m th e knuckl e an d th e
rea r o f th e lowe r contro l arm , the n secur e th e whee l
senso r wir e t o th e suspensio n 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 .
22 N- m(2.2 kg-m ,16 Ib-ft )
WHEE L SENSO R
Corrosio n resistan t bolt/nu t
10 N- m(1.0 kg-m , 7 Ib-ft ) 6
. Remov e th e banj o bol t an d disconnec t th e brak e
hose , the n remov e th e brak e hos e clam p fro m th e
knuckle .
CAUTION : Avoi d spillin g brak e flui d o n painted ,
plasti c o r rubbe r surface s a s i t ca n damag e th e
finish ; was h spille d brak e flui d of f immediatel y wit h
clea n water .
BANJO BOL T35 N- m (3. 5 kg-m , 2 5 Ib-ft )
BRAK E HOS E
WASHE RReplace.
BOLT 6 m m10 N- m (1. 0 kg-m , 7 Ib-ft )
Corrosio n resistan t bolt/nu t
7. Remov e th e rea r calipe r b y removin g th e mountin g
bolts.
CALIPE R BRACKE T MOUNTIN G BOL T110 N- m (1 1 kg-m , 8 0 Ib-ft )
CALIPE R ASSEMBL Y
Corrosion resistan t bolt/nu t
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8. Remov e th e fla t hea d screws .
Screw tw o 8 x 12 m m bolt s int o th e dis c t o pus h i t
awa y fro m th e hub .
NOTE : Tur n eac h bol t tw o turn s a t a tim e t o pre -
ven t cockin g th e dis c excessively .
FLAT HEA D SCRE W6 x 1. 0 m m10 N- m (1. 0 kg-m , 7 Ib-ft )
BRAK E DIS C
9. Remov e th e rea r hu b uni t fro m th e knuckle .
FLANGE BOL T10 x 1.2 5 mm65 N- m (6. 5 kg-m , 4 7 Ib-ft )
8 x 1 2 m mBOL T
REA R HU B UNI T
Corrosio n resistan t bolt/nu t
Rear Whee l Bearin g Replacement :
1 . Separat e th e whee l bearin g fro m th e hu b usin g th e
specia l tool s an d a press .
CAUTION : Hol d ont o th e hu b t o kee p it fro m fall -
in g whe n presse d clear .
Press
HUB DIS/ASSEMBL YBASE07GA F-SD4070 0
HUB DIS/ASSEMBL Y PI N07GA F-SD4010 0
WHEEL BEARIN GReplace.
HUB
2. Remov e th e whee l bearin g inne r rac e fro m th e hu b
a s shown .
Press
HUB DIS/ASSEMBL Y PI N07GA F-SD4010 0
INNER RAC EReplace .
BEARINGSEPARATO R
0-41/2 in.(Commerciall y
available )
NOTE: Was h th e bearin g an d hu b thoroughl y i n
hig h flas h poin t solven t befor e reassembly .
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Rear Suspensio n
Hub Replacemen t
NOTE: Replac e th e bearin g wit h a ne w on e afte r
removal .
3 . Pres s a ne w whee l bearin g ont o th e hu b usin g th e
specia l tool s an d a press .
Press HUB ASSEMBL Y
DRIVE R ATTACHMEN T
07GAF-SD4020 0
WHEEL BEARIN G
HU B DIS/ASSEMBL Y PI N
07GA F-SD4010 0
SUPPOR T BAS E07965-SD9010 0
4 . Instal l th e hu b i n revers e orde r of removal .
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Knuckle/Control Arm s
Illustrate d Inde x
Overal l Suspensio n
NOTE:
• Wip e of f th e greas e befor e tightenin g th e nu t a t th e bal l joint .
• Torqu e specifications , se e pag e 18-30 .
• Alig n th e whit e lin e o n th e stabilize r ba r wit h th e bushin g end , an d instal l th e stabilize r bar .
Corrosio n resistan t bolt/nu t
REAR DAMPE R
STABILIZER BA R
BRACKE TCheck fo r damage .
UPPE R CONTRO L AR M BUSHIN G
Check fo r deterioratio nand damage .
UPPER CONTRO L AR MChec k fo r damag e an d cracks .*UPPE R BAL L JOIN TInspec t fo r fault y movemen t an d wear .
KNUCKL ECheck for damag e an d cracks .LOWER CONTRO L BAL L JOIN TInspec t fo r faulty movemen tand wear .
FLANG E BOLT S10 x 1.2 5 mm60 N- m(6.0 kg-m , 4 3 Ib-ft )
STABILIZE R BA R
Chec k fo r damage .
FLANG E BOLT S
8 x 1.2 5 mm22 N- m (2. 2 kg-m , 1 6 Ib-ft )
TO E CONTRO L AR M BUSHIN G
Check fo r deterioratio n an d damage .
LOWER CONTRO L AR M
Chec k fo r damag e an d cracks .
TO E CONTRO L AR M
Chec k fo r damag e an d cracks .
BAL L JOIN T
Inspec t fo r fault y movemen t an d wear .
NOTE : Replac e th e join t boo t i f damaged . Th e part s marke d wit h a n asteris k (* ) hav e a retaine r attachin g th e bal l
joints . Replac e th e retaine r wheneve r th e boo t i s replaced .
CAUTION :
• D o no t remov e th e arm s an d knuckl e b y strikin g the m wit h a hammer , an d tak e car e no t t o dro p them .
• Mak e sur e tha t th e referenc e mark s o n th e to e contro l ar m ar e aligned .
STABILIZE R LIN KInspec t fo r fault ymovemen t an d wear .
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