tow ACURA NSX 1991 Service Owner's Guide

Rear 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 calipe r shiel d (se e pag e 19-17 ).
2 . Disconnec t th e parkin g cabl e (se e pag e 19-17 ).
3 . Remov e th e banj o bol t an d tw o sealin g washers .
4 . Remov e th e tw o calipe r mountin g bolt s an d calipe r
body fro m th e bracket .
5. Remov e th e pa d sprin g fro m th e caliper .
6. Remov e th e pisto n an d pisto n boo t whil e rotatin g
the pisto n wit h a commercially-availabl e locknu t
wrench .
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Power Uni t
Torque/Inspectio n
CAUTION:
• D o no t attemp t t o disassembl e th e powe r uni t ex -
cep t fo r thos e component s show n in thi s illustration .
• 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 . 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
do 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 .
BANJ O BOL T(To modulator )35 N- m (3. 5 kg-m , 2 5 Ib-ft )
SEALIN GWASHER SReplaceBANJO BOL T35 N- m (3. 5 kg-m , 2 5 Ib-ft )
MAINTENANC EBLEEDER9 N- m (0. 9 kg-m , 6. 5 Ib-ft )
POWE R UNI TDo no t disassembl e
PUMP BRACKE T
6 m m FLANG E BOL T10 N- m (1. 0 kg-m , 7 Ib-ft )
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Accumulator/Pressure Switch

Index/Torque
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 jpints 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.

Before disassembling the accumulator unit, bleed the
high-pressure brake fluid out from the system using
the Bleeder T-wrench (see page 19-62('91-'92)('93-'96)

the Bleeder

*: CORROSION RESISTANT BOLT

Make sure no dirt or other foreign matter is allowed
to contaminate the brake fluid. Do not reuse the drained fluid.
Use only clean DOT 3 or 4 brake fluid.

NOTE: Replace the 0-ring with a new one before

reassembly. The accumulator contains high-pressure
nitrogen gas, do not puncture, expose to flame, or at-
tempt to disassemble the accumulator or it may ex-
plode; severe personal injury may result.

19 N·m
(1.9 kg-m,

14 Ib-ft)

PRESSURE SWITCH

SEALING WASHERS

Replace.

BANJO BOLT

35 N·m (3.5 kg-m, 26 Ib-ft)
6 x 1.0 mm

9 N·m
(0.9 kg-m,7 Ib-ft)
ACCUMULATOR

Disposal, page 19-68
* 6 x 1.0 mm

10 N·m (1.0 kg-m, 7 Ib-ft)

O-RING

Replace.
PRESSURE SWITCH

JOINT
6 x 1.0 mm

10 N·m
(1.0 kg-m,

7 Ib-ft)ProCarManuals.com

Disassembly
NOTE: Lowe r th e glas s fully .
1 . Carefull y pr y ou t th e tri m plat e wit h a fla t ti p
screwdrive r a s shown .
CAUTION : T o preven t damag e t o th e tri m plate ,
wra p th e en d o f th e screwdrive r wit h a sho p towel .
TRIM PLAT E
SHO P TOWE L
FLA T TI P SCREWDRIVE R
2. Remov e th e tri m plat e b y pullin g i t backward , an d
remov e th e mountin g screws .
MOUNTIN G SCREW SRemove th e mountin g screw s whil epulling th e handle .
INNER HANDL E HANDL E
TRI M PLAT E
3. Disconnec t th e connecto r an d handl e cable , the n
remov e th e inne r handl e b y pullin g i t forward .
NOTE : Tak e car e no t t o ben d th e handl e cable .
HANDL E CABL E
INNE R
HANDL E
CONNECTO R
4. Carefull y remov e th e fron t an d rea r sas h covers .
NOTE : Tak e car e no t t o scratc h th e sas h covers .
FRONT SAS H COVE R
Tak e car e no t t o
brea k here .
CLIP
REA R SAS H COVE R
SAS
H COVE R
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Doors

Moldings Removal
NOTE: Lower the glass fully.
Remove: (see pages 20-7('93-'96),6('91-'92),
8('93-'96),7('91-'92) Trim plate Sash covers Inside door handle Door panel
Inner molding:

NOTE: Pry the clips out using a flat tip

screwdriver, then pull up the inner molding.

INNER MOLDING
CLIP
INNER MOLDING
Outer molding: NOTE:Remove the front sash panel (see page 20-9

('93-'96),8('91-'92) and mounting screw.

Starting at the front, release the clips, and lift

and slide the outer molding forward.
SHOP TOWEL
CLIP (6) FRONT SASH
PANEL CLIP


OUTER

MOLDING

MOUNTING

SCREW

OUTER

MOLDING
REAR SASH
STABILIZERS

OUTER

MOLDING

Installation is the reverse of the removal procedure.
NOTE:
Before installing, set the clips onto the moldings.

If necessary, replace any damaged clips.
: CORROSION RESISTANT SCREW Door Removal
1. Lower the glass fully.
2. Remove the seat (see page 20-39('93-'96),38('91-'92)

3. Disconnect the connectors.
4. Remove the door by removing the door mounting
bolts and detent rod pin, and by pulling out the wire

harness.
CAUTION: Place a shop towel or rubber pad on the
jack to prevent damage to the door.
NOTE: Let an assistant hold the door.

Lower the glass.

DOOR
JACK

SHOP TOWEL/
RUBBER PAD
DOOR MOUNTING

BOLTS
8 x
1.25
mm

30 N·m (3.0
kg-m,
22 Ib-ft)

CONNECTORS

WIRE HARNESS
DETENT ROD

PIN

5. Installation is the reverse of the removal procedure.
NOTE: Adjust the door position (see page 20-19). ('93-'96),18('91-'92)
: CORROSION RESISTANT BOLTProCarManuals.com

Position Adjustmen t
After installin g th e door , chec k fo r a flus h fi t wit h th e
body , the n chec k fo r equa l ga p betwee n th e front , rear ,
an d botto m doo r edge s an d th e body .
Th e doo r an d bod y edge s shoul d als o b e parallel . Adjus t
a t th e doo r hinge s a s shown .
CAUTION : Plac e a sho p towe l o r rubbe r pa d o n th e
jac k t o preven t damag e t o th e doo r whe n th e hing e
bolt s ar e loosene d fo r adjustment .
Lower th e glass .
SHOP TOWEL /RUBBER PA D
HING E MOUNTIN G BOLT S8 x 1.2 5 mm30 N- m (3. 0 kg-m,2 2 Ib-ft )Loose n th e hing e mountin g bolts ,and mov e th e doo r BACKWAR Dor FORWARD , U P o r DOW N a snecessar y t o equaliz e th e gaps .
DOOR HING E
DOOR MOUNTIN G BOLT S8 x 1.2 5 mm30 N- m (3. 0 kg-m,2 2 Ib-ft )Loose n th e doo r mountin g bolt sslightl y t o mov e th e doo r I N o rOU T unti l flus h wit h th e body .If necessary , yo u ca n instal l ashi m behin d on e hing e t o mak ethe doo r edge s PARALLE L wit hthe body .
CORROSIO N RESISTAN T BOL T
The doo r an d bod y edge s shoul d b e parallel .
NOTE : Chec k fo r wate r leaks .
Striker Adjustmen t
Make sur e th e doo r latche s securel y withou t slamming .
If i t need s adjustment :
1 . Dra w a lin e aroun d th e strike r fo r reference .
2. Loose n th e mountin g screws , an d mov e th e strike r
IN o r OU T t o mak e th e latc h assembl y fi t tighte r o r
looser . Mov e th e strike r U P o r DOW N to alig n i t
wit h th e latc h assembl y opening . The n lightl y
tighten th e mountin g screw s an d recheck .
STRIKER
MOUNTIN G SCREW S8 x 1.2 5 mm22 N- m (2. 2 kg-m ,16 Ib-ft )
NOTE :
• Hol d th e outsid e handl e out , an d pus h th e doo r
agains t th e bod y t o b e sur e th e strike r allow s a
flus h fit .
• D o no t ta p th e strike r wit h a meta l hamme r t o
adjus t th e position .
3. I f th e doo r latche s properly , tighte n th e mountin g
screw s an d recheck .
NOTE : Replac e th e strike r i f i t i s cracked .
CORROSIO N RESISTAN T SCRE W
DOOR
JACK
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Front and Center Pillar Retainer/Upper Weatherstrip/
Center Pillar Panel

Replacement

Disassemble in numbered sequence. CAUTION: Wear gloves to remove and install the retainer.

NOTE:
Check the upper weatherstrip for damage and deterioration, and replace it if necessary.
Take care not to bend the front and center pillar retainer.

After installing the upper weatherstrip, check for water leaks.
If necessary: Adjust the position of the door glass (see page 20-14('93-'96),13('91-'92).

If necessary: Replace any damaged clips.

SHOP TOWELADHESIVE TAPE
SPECIAL BOLT (2)

INSIDE

CUP

(4)

CENTER PILLAR
PANEL

MOUNTING

NUTS

5 x 0.8 mm

4 N·m

(0.4 kg-m,

2.9 lb-ft)

Center pillar panel removal:

1. Open the door, and remove the center pillar trim

panel (see page 20-38('93-'96),37('91-'92).

2. Remove the mounting nuts from the hole in the
body panel, and pull the center pillar panel out by

hand.

NOTE: Do not drop the mounting nuts inside the
body panel.
CENTER PILLAR
RETAINER
CENTER PILLAR
PANEL

FRONT PILLAR
RETAINER
SCREW (19) FRONT PILLAR
RETAINER

Seal with black

weatherstrip adhesive.

SCREW (3)

GLASS

STOPPER
UPPER PANEL

WEATHERSTRIP
CENTER PILLAR
CENTER PILLAR
RETAINER
B-B Section
FRONT PILLAR

RETAINER

UPPER

WEATHERSTRIP

C-C Section

UPPER

WEATHERSTRIP
FRONT PILLAR
RETAINER
A-A Section

Seal with black

weatherstrip adhesive.

WINDSHIELD
UPPER

WEATHERSTRIPProCarManuals.com

Rear Windo w
Installatio n
8. Pres s th e uppe r an d lowe r molding s int o positio n
around th e entir e edg e o f th e rea r window .
NOTE: Chec k tha t th e uppe r an d lowe r molding s
ar e no t wrinkle d o r lifte d awa y a t th e corners .
UPPER MOLDIN G
REAR WINDO W
LOWERMOLDIN G
LOWE R MOLDIN G
END CA P
UPPE RMOLDIN G
UPPE R MOLDIN G
LOWER
OUTER GLAS S MOLDIN G
INNE R GLAS S
9. Scrap e o r wip e th e exces s adhesiv e of f wit h a put -
ty knif e o r towel .
NOTE : Us e a sof t sho p towe l dampene d wit h
alcoho l t o remov e adhesiv e fro m th e rea r windo w
o r uppe r an d lowe r moldings .
10 . Afte r th e adhesiv e i s dry , instal l th e rea r defogge r
sub-harnes s an d ground cable/antenn a lea d i n th e
uppe r molding .
UPPER MOLDIN G
Righ t Side : Lef t Side :
Groun d cable / Rea r defogge r
Antenn a lea d INNE R GLAS S sub-harnes s
OUTE R GLAS S
UPPE R MOLDIN G UPPE R MOLDIN G
11. Se t th e rea r windo w uprigh t o n th e body , the n
cente r i t i n th e opening . Mak e alignmen t mark s b y
markin g line s acros s th e rea r windo w an d bod y wit h
a greas e penci l a t th e fou r point s shown .
ALIGNMEN T MARK S
REAR WINDO W
12. Glu e th e uppe r an d lowe r rubbe r dam s t o th e insid e
fac e o f th e rea r window , a s shown , t o contai n th e
adhesiv e durin g installation .
NOTE : B e carefu l no t t o touc h th e inne r glas s
wher e adhesiv e wil l b e applied .
LOWER RUBBE R DA M
INNE RGLAS S
UPPERRUBBE RDAM
INNE R GLAS S
REA R WINDO W
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6. Clea n th e glas s surfac e wit h alcoho l wher e th e ne w
moldin g is t o b e installed .
NOTE: Mak e sur e th e surfac e is kep t fre e o f water ,
oi l an d grease .
7. Wit h a brush , appl y a ligh t coa t o f glas s prime r
around th e edg e of the glass .
EXCES S PRIME R
GLAS S
6 m m(0.2 in )
SURFAC E
INSID E SURFAC E
6 m m(0. 2 in )
NOTE : Scrap e of f exces s glas s prime r wit h a putt y
knife afte r installin g th e ne w molding .
8. Degreas e th e inne r surface s o f th e ne w moldin g
thoroughly , the n appl y a ligh t coa t o f glas s prime r
t o th e surfaces .
NOTE:
• Appl y glas s prime r aroun d th e entir e groov e of
th e ne w molding .
• D o no t appl y glas s prime r t o th e oute r surface .
MOLDINGMOLDING
9. Ru n a bea d o f adhesiv e i n th e groov e o f th e
molding .
ADHESIV E
MOLDING
10. Pres s th e moldin g int o positio n aroun d th e entir e
edg e of the glass .
NOTE : Chec k tha t th e moldin g i s no t wrinkle d o r
lifte d awa y a t th e corners .
GLASSMOLDIN G
PROTECTIV ECOVER
11. Scrap e o r wip e th e exces s adhesiv e of f wit h a put -
ty knif e o r towel .
NOTE: Us e a sof t sho p towe l dampene d wit h
alcoho l t o remov e adhesiv e fro m a painte d surfac e
o r glass .
(Glass Surface )
MOLDING
EXCESS ADHESIV E
GLAS S
Inside :
Surface t o b e
wipe d clean .
5. Scrap e al l trace s o f th e ol d moldin g fro m th e cham -
fere d edge s o f th e glass .
NOTE : B e sur e t o scrap e al l trace s o f th e ol d mold -
ing throughly .
Scrape here . GLAS
S
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Inspection
SRS wir e harnesse s ar e route d nea r th e retractor .
Al l SR S wir e harnesse s an d connec -
tor s ar e colore d yellow . D o no t us e electrica l tes t
equipmen t o n thes e circuits .
CAUTION :
• B e carefu l no t t o damag e th e SR S wir e har -
nesse s whe n servicin g th e retractor .
• Remov e th e shor t connecto r (RED ) fro m th e it s
holde r an d disconnec t th e SR S wir e harnes s
connector , the n connec t th e shor t connecto r
(RED ) t o th e tensione r connector .
NOTE : T o kee p ou t dust , wra p th e SR S wir e har -
ness connecto r with a protectiv e cover .
RETRACTO R
SEAT BEL TTENSIONE R
PROTECTIV ECOVER
SRS WIR EHARNES S
SRS WIR E HARNES SCONNECTO R
Retractor Inspectio n
TENSIONE RCONNECTO R
CONNECTORHOLDER
SHORTCONNECTO R(RED)
CAUTION : Whe n checkin g th e retractor , d o no t
touc h th e sea t bel t tensioner .
1 . Befor e installin g th e retractor , chec k tha t th e sea t
belt ca n b e pulle d ou t freely .
2. Mak e sur e tha t th e sea t bel t doe s no t loc k whe n th e
retracto r i s leane d slowl y u p t o 15 ° fro m th e
mounte d position . Th e seat belt shoul d loc k whe n
the retracto r i s leane d ove r 40° .
CAUTION : D o no t attemp t t o disassembl e th e
retractor . * * : Mounte d Positio n
3. Replac e th e sea t bel t wit h a ne w on e if ther e is an y
abnormality .
On-the-Car Sea t Bel t Inspectio n
1. Chec k tha t th e sea t bel t i s no t twiste d o r caugh t o n
anything .
2. Afte r installin g a n anchors , chec k fo r fre e move -
men t o n it s retainin g bolt . I f necessary , remov e th e
bol t an d chec k tha t th e washer s an d othe r part s ar e
not damage d o r improperl y installed .
3. Chec k th e sea t belt s fo r damag e o r discoloration .
Clean wit h a sho p towe l i f necessary .
CAUTION: Us e onl y soa p an d wate r t o clean .
NOTE : Dir t built-u p i n th e meta l loop s o f th e sea t
bel t anchor s ca n caus e th e sea t belt s t o retrac t
slowly. Wip e th e insid e of the loop s wit h a clea n
cloth dampene d i n isopropy l alcohol .
4 . Chec k tha t th e seat belt doe s no t loc k whe n pulle d
ou t slowly . Th e sea t bel t i s designe d t o loc k onl y
durin g a sudde n sto p o r impact .
5. Mak e sur e tha t th e sea t bel t wil l retrac t
automaticall y whe n released .
6 . Replac e th e sea t bel t wit h a ne w on e i f ther e i s an y
abnormality .
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