1991 ACURA NSX torque

6. Install the new self-locking nuts on the top of the

damper assembly.

7. Tighten the damper mounting nut to the specified

torque.

8. Secure the damper assembly to the frame with the

self-locking nuts.

9. Install the strut brace.

10. Install the rear hatch glass trim.

11. Install the engine cover support rod onto the strut

brace.

12. Install the rear wheels.ProCarManuals.com

Illustrated Index

The accumulator contains high-pressure nitrogen gas; do not puncture, expose to flame or attempt to
disassemble the accumulator or it may explode; severe personal injury may result.

HYDRAULIC SYSTEM
Relieving Accumulator/line pressure, page 19-62 ('91-'92) ('93-'96)

MASTER CYLINDER
Index/Torque, page 19-12

Inspection, page 19-13

ABS CONTROL UNIT Replacement, page 19-70

BRAKE BOOSTER

Tests, page 19-14 Pushrod clearance adjustment, page 19-15

UNDER-HOOD

RELAY BOX B

UNDER-HOOD
FUSE/RELAY BOX

REAR WHEEL SENSOR

Inspection, page 19-71

Replacement, page 19-72
POWER UNIT
Torque/Inspection, page 19-66
ACCUMULATOR/PRESSURE SWITCHIndex/Torque, page 19-67 FRONT WHEEL SENSOR
Inspection, page 19-71
Replacement, page 19-72
MODULATOR/SOLENOID UNIT

Index/Torque, page 19-63 ('91-'92) ('93-'96)
Solenoid Leak Test, page 19-64 ('91-'92) ('93-'96)
ProCarManuals.com

6. Clea n th e calipe r thoroughly ; remov e an y rust , an d
chec k fo r groove s an d cracks .
7. Instal l th e pa d retainers .
11. Pus h i n th e piston s s o tha t th e calipe r wil l fi t ove r
the brak e pads .
12. Se t th e calipe r dow n int o position , the n instal l th e
brak e hos e mountin g bolt s an d th e calipe r moun -
ting bolts . Tighte n th e bolt s to th e specifie d torque .
8. Appl y Molykote ® M7 7 t o bot h side s o f inne r shi m
A an d th e bac k o f th e pads . Wip e exces s greas e of f
th e shims .
9 . Instal l th e brak e pads .
• Whe n reusin g th e pads , alway s reinstal l th e
brak e pad s i n thei r origina l position s t o preven t
los s o f brakin g efficiency .
• Contaminate d brak e disc s o r pad s reduc e stop -
pin g ability . Kee p greas e of f th e brak e disc s o r
pads .
NOTE :
• Instal l th e inne r pa d wit h it s wea r indicato r fac -
ing upward .
• Appl y Molykote ® M7 7 t o th e shim s (se e pag e
19-5 ). Wip e exces s greas e of f th e shims .
10 . Instal l th e brak e pa d shim s correctly . 13
. Depres s th e brak e peda l severa l time s t o mak e sur e
the brake s work , the n test-driv e th e car .
NOTE : Engagemen t of the brak e ma y requir e a
greate r peda l strok e immediatel y afte r th e brak e
pad s hav e bee n replace d a s a set . Severa l applica -
tion s of the brak e peda l wil l restor e th e norma l
peda l stroke .
14. Instal l th e fron t wheel s an d torqu e th e whee l nuts .
NOTE : Clea n th e matin g surfac e o f th e whee l an d
hu b befor e installin g th e wheel .
ProCarManuals.com

Pushrod Clearanc e Adjustmen t
NOTE: Maste r cylinde r pushrod-to-pisto n clearanc e
mus t b e checke d an d adjustment s made , i f necessary ,
befor e installin g maste r cylinder .
1 . Se t th e specia l too l o n th e maste r cylinde r body ;
pus h i n th e cente r shaf t unti l th e to p o f i t contact s
wit h th e en d o f th e secondar y pisto n b y turnin g th e
adjustin g nut .
07JAG-SD4010 0
2. Withou t disturbin g th e cente r shaft' s position , in -
stal l th e specia l too l upsid e dow n o n th e brak e
booster .
3 . Instal l th e maste r cylinde r nut s an d tighte n t o th e
specifie d torque .
4 . Connec t th e brak e booste r in-lin e wit h a vacuu m
gaug e 0-76 0 m m H g ( 0 -3 0 i n Hg ) t o th e
booster' s engin e vacuu m supply , an d maintai n a
engin e spee d tha t wil l delive r 50 0 m m H g (2 0 i n
Hg ) vacuum .
5 . Wit h a feele r gauge , measur e th e clearanc e be -
twee n th e gaug e bod y an d th e adjustin g nu t a s
shown . NOTE
: I f th e clearanc e betwee n th e gaug e bod y
an d adjustin g nu t i s 0. 4 m m (0.0 2 in) , th e pushrod -
to-pisto n clearanc e i s 0 mm . However , i f th e
clearanc e betwee n th e gaug e bod y an d adjustin g
nu t i s O mm , th e pushrod-to-pisto n clearanc e is 0. 4
m m (0.0 2 in ) o r more . Therefore , i t mus t b e ad -
juste d an d rechecked .
6 . I f clearanc e is incorrect , loose n th e sta r locknu t an d
turn th e adjuste r i n o r ou t t o adjust .
NOTE:
• Adjus t th e clearanc e whil e th e specifie d vacuu m
i s applie d t o th e brak e booster .
• Hol d th e clevi s whil e adjusting .
7 . Tighte n th e sta r locknu t securely .
8 . Remov e th e specia l tool , an d instal l a ne w maste r
cylinde r ro d sea l i n th e brak e booster .
07JAG-SD40100
9. Adjus t th e pushro d lengt h a s show n i f th e booste r
i s removed .
10 . Instal l th e maste r cylinde r (se e pag e 19-12 ).
11 . Afte r installation , perfor m th e followin g inspec -
tion s an d adjus t i f necessary .
• Brak e peda l heigh t (se e pag e 19-4 ).
• Brak e peda l fre e pla y (se e pag e 19-4 ).
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

11. Install and tighten the two caliper mounting bolts.

12. Insert the cable through the arm, and connect the

cable to the lever with the clevis pin and new lock

pin.

Install the new cable clip securely.

13. Install the caliper shield.

14. Depress the brake pedal several times to make sure

the brakes work, then test-drive the car.

NOTE: Engagement of the brake may require a

greater pedal stroke immediately after the brake

pads have been replaced as a set. Several applica-

tions of the brake pedal will restore the normal

pedal stroke.

1 5. Install the rear wheels and torque the wheel nuts.

NOTE: Clean the mating surfaces of the wheel and

hub before installing the wheel.ProCarManuals.com

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 )
ProCarManuals.com

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