Infiniti Q45. Manual - part 748

STEERING WHEEL

PS-9

C

D

E

F

H

I

J

K

L

M

A

B

PS

RACK SLIDING FORCE

1.

Start engine.

2.

Bring power steering fluid up to adequate operating temperature. [Make sure temperature of fluid is
approximately 50 to 80

°

C (122 to 176

°

F).]

3.

Disconnect lower joint and steering knuckle from steering gear assembly. Refer to 

PS-11, "COMPO-

NENT"

 .

4.

While pulling outer socket slowly in 

±

11.5 mm (

±

0.453 in) range

from neutral position, make sure rack sliding force is within
specification.

5.

If rack sliding force is not within specification, overhaul steering
gear assembly. Refer to 

PS-17, "Disassembly and Assembly"

 .

FRONT WHEEL TURNING ANGLE

1.

Check toe-in. Refer to 

FSU-17, "Wheel Alignment (Unladen*)"

 .

2.

Place front wheels on turning radius gauges and rear wheels on
stands so that vehicle can be level. Check the maximum inner
and outer wheel turning angles for LH and RH road wheels.

3.

Start engine and run at idle, turn steering wheel all the way right
and left, measure the turning angle.

4.

Check the following items when turning angle is out of the standard.

a.

Check rack stroke.

b.

Disassemble steering gear assembly to check the cause that
rack stroke is outside of the standard. Refer to 

PS-17, "Disas-

sembly and Assembly"

 .

c.

Steering angles are not adjustable. Check steering gear assem-
bly, steering column assembly and front suspension compo-
nents for wear or damage if any of the turning angles are
different from the specified value. Replace any of them, if any non-standard condition exists.

Rack sliding force:

255 - 294 N (26.1 - 29.9 kg, 57.4 - 66.0 lb)

SST090B

SMA127

Inner wheel (Angle: A) 

Minimum

: 39

°

45

′

 (39.75

°

)

Nominal

: 42

°

45

′

 (42.75

°

)

Maximum

: 43

°

45

′

 (43.75

°

)

Outer wheel (Angle: B)

Nominal

: 33

°

50

′

 (33.83

°

)

SGIA0055E

Rack stroke “L”

Except for RAS models

: 68.5 mm (2.697 in)

RAS models

: 66.0 mm (2.598 in)

SGIA0629J

PS-10

STEERING WHEEL

Removal and Installation

NGS0002R

REMOVAL

NOTE:
When reconnecting spiral cable, fix cable with a tape so that fixing case and rotating part keep aligned. This
will omit neutral position alignment procedure during spiral cable installation.

1.

Set vehicle to the straight-ahead position.

2.

Remove driver air bag module. Refer to 

SRS-40, "DRIVER AIR BAG MODULE"

 .

3.

Remove steering wheel lock nut after steering is locked.

4.

Remove steering wheel with the steering wheel puller (SST).

INSTALLATION

Note the following, and installation is the reverse order of removal.

●

When installing the steering wheel, tighten lock nut to the specified torque.

CAUTION:

Check the spiral cable neutral position after replacing or rotating spiral cable. Refer to 

SRS-43,

"INSTALLATION"

 .

SGIA0939E

Steering wheel lock nut

: 34.3 N·m (3.5 kg-m, 25 ft-lb)

STEERING COLUMN

PS-11

C

D

E

F

H

I

J

K

L

M

A

B

PS

STEERING COLUMN

PFP:48810

Removal and Installation

NGS0002S

COMPONENT

REMOVAL
Lower Shaft and Hall Cover

1.

Set vehicle to the straight ahead-direction.

2.

Remove fixing bolt at lower-side of lower joint.

3.

Loosen fixing bolt at lower shaft-side of upper joint.

4.

Remove collar, mounting bolt and nut at steering column assembly-side of upper joint.

5.

Remove hole cover mounting nuts, and remove upper joint, lower joint, lower shaft and hall cover from
vehicle.

CAUTION:

Never move the steering gear assembly and steering wheel.

6.

Remove lower shaft from hole cover.

Steering Column

1.

Set vehicle to the straight ahead-direction.

2.

Remove driver air bag module. Refer to 

SRS-40, "DRIVER AIR BAG MODULE"

 .

3.

Remove steering wheel. Refer to 

PS-10, "Removal and Installation"

 .

4.

Remove column cover, steering lock escutcheon, and driver-side instrument lower driver panel. Refer to

IP-10, "INSTRUMENT PANEL ASSEMBLY"

 .

5.

Remove combination switch. Refer to 

DI-23, "Removal and Installation for Combination Meter"

 .

6.

Remove spiral cable. Refer to 

SRS-43, "Removal and Installation"

 .

7.

Loosen fixing bolt at lower shaft-side of upper joint.

8.

Remove collar, mounting bolt and nut at steering column-side of upper joint. Then remove upper joint from
steering column assembly.

CAUTION:

Never move the steering gear assembly and steering wheel.

9.

Disconnect harness connector from each switch on steering column shaft, then separate vehicle side har-
ness from it.

10. Remove steering column assembly from vehicle.

1.

Steering column assembly

2.

Collar

3.

Upper joint

4.

Hole cover

5.

Lower shaft

6.

Lower joint

Refer to 

GI-9, "Components"

 , for the symbols in the figure.

SGIA1510E

PS-12

STEERING COLUMN

CAUTION:

●

Never give axial impact to the steering column assembly during removal.

●

Never move the steering gear assembly when removing the steering column assembly.

INSPECTION AFTER REMOVAL
Steering Column

●

Check if there is something wrong with jacket tube of steering column assembly and collar etc. And then if
they are damaged, replace with new one.

●

If vehicle has a minor collision, check column length “L

1

 , L

2

 ” as

shown in the figure. Then if it is out of the specified value,
replace with new one.

●

Check tilt device and its operation range. Ranges of operation
are shown in the figure.

CAUTION:

Never give axial impact to the steering column assembly
during installation.

INSTALLATION
Steering Column

Note the following, and installation is the reverse order of removal.

●

Refer to 

PS-11, "COMPONENT"

  about each tightening torque.

●

Adjust neutral position of spiral cable. Refer to 

SRS-43, "INSTALLATION"

 .

●

Check if steering wheel operation can turn to the end of the left and right smoothly.

Lower Joint and Hall Cover

Note the following, and installation is the reverse order of removal.

●

Refer to 

PS-11, "COMPONENT"

  about each tightening torque.

●

When installing steering column assembly to steering member, install mounting nuts from front side of
vehicle with tilt neutral position.

CAUTION:

Never give axial impact to the steering column assembly during installation.

●

When installing lower shaft to steering gear assembly, follow the procedure listed below.

–

Set rack of steering gear in the neutral position.

NOTE:
To get the neutral position of rack, turn gear sub-assembly and measure the distance of inner socket, and
then measure the intermediate position of the distance.

Steering column length “L

1

 ”

Minimum

: 628 mm (24.72 in)

Neutral

: 643 mm (25.31 in)

Maximum

: 658 mm (25.91 in)

Steering column lower shaft length “L

2

 ”

: 346.8 mm (13.65 in)

SST315B

SGIA0053E