1991 ACURA NSX Service Repair Manual

Transmission

Installation (cont'd)
27. Install the 3 transmission mounting bolts, and the 2 transmission housing mounting bolts.
28. Install the starter motor and tighten the starter motor mounting bolts.
29. Install the ATF cooler.
30. Connect the transmission ground cable, starter motor cable, solenoid valve wire connectors and vehicle
speed sensor (VSS) wire connectors.
31. Install the control box and connect the control box connectors.
32. Install the air cleaner housing.
33. Install the strut bar.
TORQUE: 39 N .
m (3.9 kg-m, 28 Ib-ft)
Corrosion resistant bolt/nut 34. Refill the transmission with ATF.
35. Connect the battery positive (+) and negative (-) ca- ble to the battery.
36. Inspect the rear camber (see section 18).
37. Start the engine. Set the parking brake, and shift the transmission through all gears three times. Check forproper shift cable adjustment.
38. Check the ignition timing (see section 23).
39. Let the engine reach normal operating temperature (the cooling fan comeson) with the transmission in or position, then turn it off and check the
fluid level.
40. Road test as described on page 14-88.
TRANSMISSION HOUSING MOUNTING BOLT
12 x
1.25
mm

75 N .
m (7.5 kg-m, 54 Ib-ft)
CONTROL BOX

8x1.25 mm
18 N .
m
(1.8 kg-m,
13 Ib-ft)
TRANSMISSION MOUNTING BOLT
10 x 1.25mm

60 N .
m (6.0 kg-m, 43 Ib-ft)
STARTER MOTOR
MOUNTING BOLT
12 x 1.25mm

75 N .
m
(7.5 kg-m,
54 Ib-ft)ProCarManuals.com

Shift Cable
Adjustment
1. Start the engine. Shift to reverse to see if the reverse gear engages. If not, refer to Trouble-

shooting on pages 14-84 thru 14-87.

2. Stop the engine. 3. Raise the car (see section 1). 4. Shift the selector lever to position.
5. Remove the shift cable cover.
6. Remove the control lever pin and lock pin from the control lever.
CONTROL LEVER PIN
CONTROL
LEVER

SHIFT CABLE COVER

6 x 1.0 mm

8 N .
m (0.8 kg-m, 6 Ib-ft)
LOCK PIN Install in this

direction.
7. Shift the control lever to position.
SHIFT CONTROL LEVER 12. Install the shift cable cover.
13. Start the engine and check the shift lever in all gears. If any gear does not work properly, refer to
Troubleshooting on pages 14-84 thru 14-87. If you feel the control lever pin binding as you rein-

stall it, the cable is still out of adjustment and must

be readjusted.
Install the lock pin as shown in step 6.

10. Tighten the locknut.

11. Install the control lever pin and lock pin.

NOTE:
LOCKNUT

LOCKNUT

NOTE: Left-hand

threads
ADJUST NUT

9. If not perfectly aligned, loosen the locknut on the shift
cable and adjust as required. Cable Cable Exact

Too Short Too Long Alignment
SHIFT CABLE END
CONTROL LEVER
8. Check that the hole in the control lever is perfectly
aligned with the hole in the shift cable.ProCarManuals.com

BRACKET BEAM
COTTER PIN

Replace.

SELECT

LEVER PIN SELECT LEVER
MOUNTING BOLT
SHIFT CABLE

HOLDER

6 x 1.0 mm
12 N .
m

(1.2 kg-m, 9 Ib-ft)

6 x 1.0 mm

8 N .
m (0.8 kg-m, 6 Ib-ft)
SHIFT CABLECLAMPS
SHIFT CABLE

COVER

LOCK PIN
Install in this
direction. CONTROL

LEVER
LEVER
CONTROL

SRS MAIN

HARNESS Make sure lifts are placed properly.
1. Remove the center console panel (see section 20).

2. Remove the shift cable by removing the cotter pin and
selector lever pin from the selector lever, and mount-

ing bolts from the bracket beam.

3. Remove the shift cable clamps.

4. Remove the shift cable holder and shift cable cover.
5. Remove the shift cable by removing the lock pin and
control lever pin from the control lever.

CAUTION: Take care not to bend the calbe when
removing it.
6. Install the shift cable in the reverse order of removal.
7. Check the cable adjustment on reassembly, on page
14-157.

Shift Cable
Removal/Installation
All SRS wiring harnesses are covered with yellow
outer insulation.Before disconnecting any part of the SRS wire
harness, install the short connectors (see page
23-328).

Replace the entire affected SRS harness assembly if
it has an open circuit or damaged wiring.
CAUTION:

PINProCarManuals.com

Gearshift Selector

All SRS wiring harnesses are covered with yellow

outer insulation.
Before disconnecting any part of the SRS wire

harness, install the short connectors (see page
23-328).

Replace the entire affected SRS harness assembly if

it has an open circuit or damaged wiring.

CAUTION:

SELECT LEVER KNOB
3 N.
m

(0.3 kg-m, 2 Ib-ft)
SRS MAIN

HARNESS

SILICONE GREASE

3 N .
m

(0.3 kg-m, 2 Ib-ft)
Apply non hardening
thread lock sealant.
SHIFT INDICATOR PANEL
KEY CYLINDER

3 N .
m

(0.3 kg-m, 2 Ib-ft)

5 N.
m (0.5 kg-m, 4 Ib-ft)

A/T GEAR
POSITION

SWITCH

SILICONE

GREASE

LEVER COVER

SHIFT INDICATOR
3 N .
m (0.3 kg-m, 2 Ib-ft)

SHIFT CABLE

SILICONE GREASE
10 N.
m

(1.0 kg-m, 7 Ib-ft)

SHIFT LOCK
SOLENOID

E-CLIP

3 N .
m

(0.3 kg-m, 2 Ib-ft)

DETENT COVER
DETENT
PLATE

10 N
.
m (1.0 kg-m, 7 Ib-ft)

BRACKET BEAM

SHIFT CABLE HOLDER

Install in this direction.

CONTROL

LEVER PIN

LOCK PIN

SELECTOR MOUNT

BRACKET

SILICONE
GREASEProCarManuals.com

INDEX MARK
SHIFT INDICATOR

PANEL

SRS MAIN

HARNESS
1. Check that the index mark of the indicator aligns with
the N mark of the shift indicator panel with the trans-mission in NEUTRAL.
2. If not aligned, remove the cellnter console panel (see section 20).
3. Remove the shift indicator panel mounting screws and adjust by moving the panel.
NOTE: Whenever the shift indicator panel is re-
moved, reinstall the panel as described above.
All SRS wiring harnesses are covered with yellow
outer insulation.
Before disconnecting any part of the SRS wire
harness, install the short connectors (see page
23-328).

Replace the entire affected SRS harness assembly if
it has an open circuit or damaged wiring.
CAUTION:

Adjustment

Shift Indicator PanelProCarManuals.com

Special Tools

Ref.
No.

Tool Number

07GAF-SD40700

07MAC-SL00200

07MAG-SL00100

07MAJ-SLOOOOA

07MAZ-SL00100

07MAZ-SL00200

07MAZ-SL00300

07MAZ-SL00400

07908-ME90000

07916-SA50001

07973-6920001

07974-SD90000
Description

Hub Dis/Assembly Base Ball Joint Remover, 28 mm

Ball Joint Boot Clip Guide
EPS Test Set
Test Harness A
Test Harness B
Test Harness C Power Unit Checker
Locknut Wrench
Locknut Wrench, 40 mm
P/S Adjustment Guide

Steering Inspection Arm
Qty

2
1

1

1

1
1
1

1

1
1

1
Page Reference

17-24 17-19, 64

17-30, 72

1
7-45,
48, 50,

52, 53, 54, 55,

56, 59, 60, 61

17-45, 53, 55

17-45, 56
17-45, 58
17-23, 26, 27 17-7,
70

17-25

17-22, 26, 69ProCarManuals.com

System Description

Steering Column

The NSX has a tilt/telescopic steering column. The tilt/telescopic mechanism makes it possible to adjust the steering

wheel in fore and aft, and up and down directions.

Tilt Mechanism

There is a joint on the upper steering shaft, and the portion of the column between the steering wheel and this joint

is
adjustable
up and
down. When
the
tilt
lever
is
operated,
the
lock
gears
are
detached from
the
column
gear
to
release

the
lock.
The
column
moves
upward
or
downward
on two
pivot bolts. When
the
tilt
lever
is
returned
to a
fixed position

after selecting the steering wheel height, the lock gear is engaged with the column gear to secure the column.

PIVOT

BOLT
TILT LEVER

COLUMN

GEAR
PIVOT

BOLT

LOCK GEAR
TILT LEVER

(cont'd)
JOINTProCarManuals.com

System Description

Steering Column (cont'd)

Telescopic Mechanism

The upper steering shaft is divided into two shafts, connected by splines, making it possible for the shaft to telescope

while transmitting the rotation of the steering wheel. When the telescopic lever is lowered, the lever pivot turns in a

direction to loosen the stopper shim at the tip of the lever pivot, allowing the shaft to make telescope. The telescopic

stroke is limited by the slot and stopper on the movable shaft. After selecting a steering wheel position and returning

the telescopic lever to the fastening position, the stopper shim is pressed against the movable shaft the lever pivot to

fasten the sliding part.

STOPPER

SHIM

STOPPER

UPPER

STEERING SHAFT

SPLINES

LEVER

PIVOT

TELESCOPIC LEVERProCarManuals.com