1991 ACURA NSX wheel bolts

Steering Wheel

Removal

Airbag Removal

Store a removed airbag assembly with the

pad surface up, if the airbag is improperly stored face

down, accidental deployment could propel the unit with

enough force to cause serios injury.

NOTE: Before removing the steering wheel, make sure

the front wheels are straight ahead.

CAUTION:
All SRS wiring harnesses are covered with yellow
outer insulation.

Before disconnecting any part of the SRS wire

harness, install the short connectors (see pages
23-328 and 329).

Replace the entire affected SRS harness assembly if
it has an open circuit or damaged wiring.
1. Disconnect both the negative cable and positive ca-
ble from the battery.

2. Remove the access panel from the steering wheel lower cover, then remove the short connector.
3. Disconnect the connector between the airbag and cable reel.
4. Connect the short connector to the airbag side of the connector.
AIRBAG 3-PCONNECTOR
SHORT CONNECTOR
(RED)

CABLE REEL 3-P
CONNECTOR

ACCESS PANEL
CRUISE CONTROL SET/RESUME

SWITCH

TORX ®
BOLT
AIRBAG ASSEMBLY (cont'd)

5. Remove the TORX
®
bolts using a TORX ®
T30 bit,

then remove the airbag assembly.
TORX ®
BOLTSProCarManuals.com

5.
Install
the
airbag assembly
with
new
TORX
®

bolts.
TORX ®
BOLT
10 N ·
m (1.0 kg-m, 7 Ib-ft)
Replace
TORX ®
BOLTS
10 N ·
m (1.0 kg-m, 7 Ib-ft)

Replace
AIRBAG ASSEMBLY
7. Disconnect the short connector from the airbag 3-P connector.
8. Connect the airbag 3-P connector and cable reel 3-P
connector.

9. Attach the short connector to the access panel, and install the access panel on the steering wheel
lower cover.
ACCESS PANEL SHORT CONNECTOR

(RED)
10. Connect the battery positive terminal and then con-
nect the negative terminal.
11. After installing the airbag assembly, confirm proper system operation:
Turn the ignition to II: the instrument panel SRSindicator light should come on for about 6
seconds and then go off.
Confirm operation of horn buttons.
Confirm operation of cruise control set/resume

switch.

Turn the steering wheel counterclockwise and
make sure the yellow gear tooth still lines up with
the alignment mark.
YELLOW GEAR TOOTH
ALIGNMENT MARKProCarManuals.com

Manual 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

CLAMP

CLIP

2. Remove the steering joint bolts, and disconnect the steering joint by moving the joint toward the

column.

STEERING JOINT

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 car and place safety stands in the proper
locations (see section 1).
5. Remove the front wheels.
8 x
1.25
mm

BOLT WASHERS

25 N .
m (2.5 kg-m, 18 Ib-ft)

Corrosion resistant bolt/nut
FLOOR UNDER

COVER

9. Remove the folding spare tire and spare tire holder
plate.
10. Disconnect the battery negative terminal, then disconnect the positive terminal and remove the
battery.
11. Remove the spare tire holder and floor under cover.
10 N·
m

(1.0 kg-m, 7 Ib-ft)

SPARE TIRE
HOLDER

(cont'd)

COTTER PIN

Replace.

On reassembly, bend
the cotter pin as shown.

Corrosion resistant bolt/nut

CASTLE NUT

44 N
·
m

(4.4 kg-m, 32 Ib-ft)

10 mm HEX NUT

NOTE: If necessary, apply penetrating type lubricant
to loosen the ball joint.

BALL JOINT REMOVER. 28 mm

07MAC-SL00200

6. Remove the cotter pin from the castel nut and
remove the nut.
7. Install the 10 mm hex nut on the ball 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 (07MAC-SL00200). Refer to

page 18-21('93-'96), 18-21('91-'92) for how to use
8. Separate the tie-rod ball joint and knuckle using the special tool.
CAUTION: Avoid damaging the ball joint boot.

TOOTHED LOCK

WASHERSProCarManuals.com

Manual Steering
Gearbox Removal/Installation (Cont'd)
12. Remove the flange bolts and nuts from the gearbox and front crossbeam.
10 mm FLANGE NUTS

60 N ·
m

(6.0 kg-m, 43 Ib-ft)

FRONT CROSSBEAM

10 x 97 mm

FLANGE BOLT

FLANGE BOLT

Corrosion resistant bolt/nut
13. Remove the steering gearbox from the front cross- beam by removing the flange bolts.

FLANGE BOLTS

60 N.
m (6.0 kg-m, 43 Ib-ft)

FRONT CROSSBEAM

Front
GEARBOX

ASSEMBLY

Corrosion resistant bolt/nut
14. Install the gearbox in the reverse order of removal.

CAUTION: Torque the castle nut of the tie-rod end

to the lower torque specification, then tighten it on-

ly far enough to align the slot with the pin hole. Do

not align the nut by loosening.

NOTE: When connecting the steering joint, make
sure that the cable reel of SRS is centered.
15. Set the steering rack in the center of its strokes.
16. Center the cable reel as follows: Turn the steering wheel left approx. 150
degrees, to check the cable reel position with
indicator.

If the cable reel is centered, the yellow gear
tooth lines up with the alignment mark on the
cover.
Return the steering wheel right approx. 150
degrees to position the steering wheel in the
straight ahead position.

YELLOW GEAR TOOTH

ALIGNMENT MARK
17. Slip the lower of the steering joint onto the pinion shaft (line up the bolt hole with the groove around
the shaft) and loosely install the lower bolt.
NOTE:
Be sure that the lower steering joint bolt is
securely in the groove in the steering gearbox

pinion.

If the steering wheel and rack are not aligned
centered, reposition the serrations at lower side

of the steering joint.

18. Adjust the front toe after installing the gearbox (see section 18).ProCarManuals.com

Power 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

CLAMP

CLIP

2. Remove the steering joint bolts, and disconnect the steering joint by moving the joint toward the

STEERING JOINT

column.

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 car and place safety stands in the proper
locations (see secion 1).
5. Remove the front wheels.
6. Remove the cotter pin from the castel nut and remove the nut. 7. Install the 10 mm hex nut on the ball 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 (07MAC —SL00200). Refer to
page 18-21 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 lubricant

to loosen the ball joint.

BALL JOINT REMOVER, 28 mm

07MAC-SL00200

CASTLE NUT

44 N .
m (4.4 kg-m, 32 Ib-ft)

COTTER PIN

Replace.
10 mm HEX NUT

Corrosion resistant bolt/nut

9. Remove the folding spare tire and spare tire holder plate.
10. Disconnect the battery negative terminal, then disconnect the positive terminal and remove the
battery.
11. Remove the spare tire holder and floor under cover.
10 N·m

SPARE TIRE

HOLDER

FLOOR UNDER

COVER

8 x
1.25
mm

BOLT

WASHERS

25 N .
m

(2.5 kg-m, 18 Ib-ft)

Corrosion resistant bolt/nut

TOOTHED LOCK

WASHERS

(1.0 kg-m, 7 Ib-ft)ProCarManuals.com

Front Suspension

Hub Replacement
1. Loosen the wheel nuts slightly.
2. Raise the front of car and support on safety stands in proper locations (see section 1).
3. Remove the wheel nuts and wheel. NOTE: Before installing the wheel, clean the
mating surfaces of the brake disc and inside of the
wheel.

CENTER

CAP

WHEEL NUT
110 N .
m

(11 kg-m, 80 lb-ft)

4. Remove the brake hose mounting bolts.

FRONT BRAKE HOSE

BRAKE HOSE MOUNTING BOLTS

Corrosion resistant bolt/nut
5. Remove the wheel sensor from the knuckle and
front lower control arm.
Do not disconnect the wheel sensor.
Be careful when installing the sensors to avoid
twisting wires. 10N.
m
(1.0 kg-m, 7 lb-ft)

WHEEL

SENSOR

22 N.
m

(2.2 kg-m, 16 Ib-ft)

Corrosion resistant bolt/nut

6. Remove the caliper bracket mounting bolts and hang the caliper assembly to one side.
CAUTION: To prevent accidental damage to the
caliper assembly or brake hose, use a short piece of

wire to hang the caliper assembly from the

undercarriage.

CALIPER BRACKET MOUNTING BOLTS
110 N .
m (11 kg-m, 80 Ib-ft)

10 N .
m

(1.0 kg-m. 7 Ib-ft)

Corrosion resistant bolt/nut

22 N
.
m (2.2 kg-m, 16 Ib-ft)
NOTE:ProCarManuals.com

7. Remove the flat head screws.
Screw two 8x12 mm bolts into the disc to push it
away from the hub.
NOTE: Turn each bolt two turns at a time to pre-
vent cocking the disc excessively.
FLAT HEAD SCREW

6 x 1.0 mm
10N .
m (1.0 kg-m, 7 Ib-ft)
BRAKE DISC 8x12
mm

BOLTS
8. Remove the hub unit from the knuckle.
SELF-LOCKING NUT
10 x
1.25
mm

Replace.
65 N .
m (6.5 kg-m, 47 Ib-ft)

FRONT HUB UNIT

Corrosion resistant bolt/nut
Front Wheel Bearing Replacement:
1. Pry the spindle nut stake away from the spindle,
then remove the spindle nut.

SPINDLE NUT

26 x 1.5 mm
Replace. Unstake
2. Remove the pulser using a commercially available bearing puller.

PULSER

(cont'd)ProCarManuals.com

Rear Suspension
Hub Replacement
1. Remove the center cap, then pry the spindle nut
lock tab away from the spindle and loosen the nut.
2. Raise the car and support it with safety stands (see section 1).

WHEEL NUT
110 N.m

(11 kg-m, 80 Ib-ft)

SPINDLE NUT

26 x 1.5 mm
Replace.

NOTE: After tightening, use a drift
to stake spindle nut shoulder against the driveshaft.

3. Remove the rear wheels.

NOTE: Before installing the wheel, clean the
mating surfaces of the brake disc and inside of the wheel.
4. Remove the spindle nut.
5. Remove the wheel sensor from the knuckle and rear lower control arm.

NOTE:
Do not disconnect the wheel sensor.
Be careful when installing the sensors to avoid
twisting wires.

22 N .
m

(2.2 kg-m,

16 Ib-ft)

WHEEL SENSOR
Corrosion resistant bolt/nut
6. Remove the banjo bolt and disconnect the brake
hose, then remove the brake hose clamp from the
knuckle.
CAUTION: Avoid spilling brake fluid on painted,
plastic or rubber surfaces as it can damage the

finish;

Wash spilled brake fluid off immediately with clean
water.

BANJO BOLT

35 N .
m (3.5 kg-m, 25 Ib-ft)
BRAKE HOSE

WASHER

Replace.
BOLT 6 mm
10 N .
m (1.0 kg-m, 7 Ib-ft)

Corrosion resistant bolt/nut

7. Remove the rear caliper by removing the mounting
bolts.

CALIPER BRACKET MOUNTING BOLT
110 N .
m (11 kg-m, 80 Ib-ft)

CALIPER ASSEMBLY

Corrosion resistant bolt/nut

10 N
.
m

(1.0 kg-m. 7 Ib-ft)ProCarManuals.com