1991 ACURA NSX torque

NOTE: Torque bolts to 55 N
.
m (5.5 kg-m, 40 Ib-ft) in order of thru in
two or more steps. NOTE: Align the control
shaft spring pin with the
groove in the transmission housing.

6x 1.0 mm

12 N .
m

(1.2 kg-m. 9 Ib-ft)

Replace.
Replace.

6 x 1.0 mm

14 N .
m

(1.4
kg-m.

10 Ib-ft)
17 Bolts

10 x 1.25mm

55 N .
m

(5.5 kg-m, 40 Ib-ft)

FORK BOLT HOLE

Turn valve stem so large
chamfered hole faces
fork bolt hole.
SHIFT FORK

MAINSHAFT

COUNTERSHAFT

NOTE: Install the three shafts
Transmission
Reassembly (cont'd)
2. Assemble the transmission housing in the following numbered sequence.
NOTE: See page 14-145 when installing the reverse idler gear.

SECONDARY

SHAFT
together.ProCarManuals.com

Transmission

Reassembly (cont'd)

8. Install a new conical spring washers and new locknuts on each shaft.
CAUTION: Install the conical spring washers in the
direction shown.
COUNTERSHAFT LOCKNUT
Left-hand threads

CONICAL SPRING

WASHERS
NOTE: Install in this

direction.
Left-hand threads

MAINSHAFT

LOCKNUT

SECONDARY

SHAFT
LOCKNUT

9. Tighten the locknuts to specified torque.
TORQUE: 140 N .
m (14.0 kg-m, 101 Ib-ft)

NOTE: Countershaft locknut has left-hand

threads.

TORQUE WRENCH
10. Stake each locknut into its shaft, using a 3.5 mm

punch.

COUNTERSHAFT

LOCKNUT
MAINSHAFT

LOCKNUT

SECONDARY

SHAFT

LOCKNUT

11. Install the feed pipes and ball bearing in the left side cover, aligning the lugs of the 1st and 1st-hold
clutch feed pipes with the grooves of the left side

cover.

12. Install the snap ring.

BALL BEARING

markProCarManuals.com

LINEAR SOLENOID

6 x 1.0 mm

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

MAINSHAFT SPEED SENSOR
SPEED SENSOR

COVER
LINEAR
SOLENOID

SHIM

COUNTERSHAFT
SPEED
LOCK WASHER
6 x 1.0 mm

(1.4 kg-m, 10 Ib-ft)

SPEED
SENSOR
COUNTERSHAFT

Install the countershaft speed sensor with the

countershaft speed sensor washer. The main-
shaft speed sensor has no washer.

See page 14-81 thru 82, when installing the

linear solenoid.

NOTE:

13. Install the countershaft and mainshaft speed sen-
sors, vehicle speed sensor cover and linear sole-

noid.

TORQUE: 12 N .
m (1.2 kg-m, 9 Ib-ft)
CONTROL SHAFT
CHANGE SHAFT
CHANGE SHAFT CAP

6x
1.0mm

12 N
.
m (1.2 kg-m, 9 Ib-ft)

CONTROL

LEVER

14. Install the control lever, new lock washers, change
shaft and change shaft cap on the other end of the

control shaft. Tighten the bolts and then bend the tab

over against the bolt head.

12. Install the left side cover.

TORQUE: 12 N .
m (1.2 kg-m, 9 Ib-ft)

SENSOR
WASHER
14 N
.
mProCarManuals.com

Torque Converter

Disassembly

6 x 1.0 mm
12 N .
m(1.2 Kg-m. 9 Ib-ft)

DRIVE PLATE

Inspect for cracks.

RING GEAR/TORQUE
CONVERTER ASSEMBLY
WASHER

12 x
1.0mm
75 N .
m (7.5 Kg-m, 54 Ib-ft)

Torque in crisscross pattern.

O-RING

Replace.ProCarManuals.com

Transmission

Installation

1. Place the transmission on the transmission jack, and raise to the engine level.
2. Check that the 14 mm and 10 mm dowel pins are installed in the torque converter housing.
3. Install the 3 transmission housing mounting bolts.
4. Install the 3 rear transmission mounting bolts.
5. Loosen the front engine mounting bolt and install the 2 front engine mounting bolts to transmission side, then
tighten the 3 bolts specified torque.

TRANSMISSION HOUSINGMOUNTING BOLT
12 x
1.25
mm

75 N .
m (7.5 kg-m, 54 Ib-ft)
DOWEL PIN

14 x 20 mm

FRONT ENGINE
MOUNTING BOLT
10 x
1.25
mm

60 N .
m

(6.0 kg-m, 43 Ib-ft)
TRANSMISSION HOUSING MOUNTING BOLT
12x1.25 mm

75 N .
m (7.5 kg-m, 54 Ib-ft)
O-RING
Replace.
DOWEL PIN
10 x 20 mm

TORQUE CONVERTER REAR TRANSMISSION
MOUNTING BOLT

10 x
1.25
mm
60 N·m

(6.0 kg-m, 43 Ib-ft)
TRANSMISSION JACK

7. Attach the torque converter to the drive plate with 8 bolts to 12 N.m (1.2 kg-m, 9 Ib-ft). Rotate the crankshaft as necessary to tighten bolts to 1/2 of specified torque, then final torque, in a crisscross pattern. Check for free rotation after tighteningthe last bolt.
8. Install the torque converter cover. 9. Install the shift cable, shift cable holder and shift cable cover.
10. Install the upper control arm mounting bolt.

6x 1.0 mm

12 N
.
m

(1.2 kg-m, 9 Ib-ft)

6 x 1.0 mm

12 N
.
m

(1.2 kg-m, 9 Ib-ft)
CONTROL LEVER
UPPER CONTROL ARM MOUNTING BOLT
10 x
1.25
mm

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

6 x 1.0 mm

12 N
.
m

(1.2 kg-m, 9 Ib-ft)

(cont'd)

6 x 1.0 mm

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

Install in this

direction.
LOCK PIN
CONTROL LEVER

PIN
Corrosion resistant bolt/nut

Corrosion resistant bolt/nut

6. Remove the transmission jack.ProCarManuals.com

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

Installation

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

Replace the entire affected SRS harness assembly if

it has an open circuit or damaged wiring.

1. Slip the lower end of the steering joint onto the pin- ion shaft.
2. Reposition the column assembly on the hanger bracket and loosely tighten with 8 mm flange nuts.
COLUMN ASSEMBLY
8 mm FLANGE NUTS
16 N.m

(1.6 kg-m, 12 lb-ft)
3. Tighten to the steering joint bolts.

NOTE:
Be sure that the lower bolt is securely in the
groove in the steering gearbox pinion shaft. Be sure the pinion shaft and the steering column
shaft are aligned; the joint should slip on freely.
If not reposition the steering rack to correct the
misalignment.
STEERING JOINT

Slip the upper end of the steering joint onto the steering

shaft (line up the bolt hole with the groove around the
shaft) and loosely install the upper bolt. STEERING COLUMN
SHAFTPull down while

tightening bolt.

Bolt must line up with flat

on shaft.

STEERING GEARBOX

PINION SHAFT

TOOTHED LOCK

WASHERS
STEERING JOINT BOLTS
22 N ·
m (2.2 kg-m, 16 Ib-ft) 4. Install the column holder with the 8 mm bolts.
COLUMN

HOLDER

8 mm BOLTS

22 N.m

(2.2 kg-m, 16 Ib-ft)
5. Tighten the 8 mm flange nuts to the specified
torque.

6. Install the steering joint cover with the clamps and clips.

CLIP

STEERING JOINT COVER
CLAMPS

(cont'd)ProCarManuals.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