Infiniti Q45. Manual - part 749

STEERING COLUMN

PS-13

C

D

E

F

H

I

J

K

L

M

A

B

PS

–

Align rear cover cap (1) projection (A) with the marking position
(B) of gear housing assembly.

–

Install slit part of lower shaft (C) aligning with the projection (A)
of rear cover cap (1). Make sure that the slit part of lower shaft
(C) is aligned with both the projection (A) of rear cover cap (1)
and the marking position (B) of gear housing assembly.

Disassembly and Assembly

NGS0002T

COMPONENT

SGIA1546E

1.

Snap ring

2.

O-ring

3.

Upper jacket tube

4.

Steering column upper shaft

5.

Tilt motor

6.

Tilt sensor

7.

Spring

8.

Tilt lever

9.

Jacket tube

10. Mounting nut

11.

Telescopic sensor

12. Bracket

13. Telescopic motor

Refer to 

GI-9, "Components"

 , for the symbols in the figure.

SGIA1547E

PS-14

STEERING COLUMN

DISASSEMBLY
Steering Column

1.

Remove tilt motor and sensor from jacket tube.

2.

Remove telescopic motor and sensor from jacket tube.

3.

Remove snap ring from steering column upper shaft.

4.

Remove upper jacket tube.

5.

Remove mounting nuts, and remove steering column upper shaft from jacket tube.

Steering Lock

1.

Break self-shear type screws with a drill or other appropriate tool.

ASSEMBLY

Note the following, and assembly is the reverse order of disassembly.

●

Refer to 

PS-13, "COMPONENT"

  about each tightening torque.

●

Install new self-shear type screws and then cut off self-shear
type screw heads.

SST678C

POWER STEERING GEAR

PS-15

C

D

E

F

H

I

J

K

L

M

A

B

PS

POWER STEERING GEAR

PFP:49001

Removal and Installation

NGS0002U

COMPONENT

REMOVAL

1.

Set wheels in the straight-ahead position.

2.

Remove tires from vehicle with power tool.

3.

Remove undercover with power tool.

4.

Remove cotter pin (1), and then loosen the nut.

5.

Remove steering outer socket (2) from steering knuckle (3) so
as not to damage ball joint boot (4) using the ball joint remover
[suitable tool].

CAUTION:

Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover [suitable tool] from
suddenly coming off.

6.

Remove high pressure hose and suction hose from steering
gear assembly, then drain fluid from pipings.

7.

Remove fixing bolt on lower side of lower joint.

CAUTION:

Spiral cable may snap due to steering operation if steering column is separated from steering gear
assembly. Therefore fix steering wheel with a string to avoid turns.

8.

Loosen fixing bolt on upper side of lower joint.

9.

Disconnect power steering solenoid valve connector.

10. Remove mounting bolts of steering gear assembly with power tool, and then remove rack mounting

bracket, rack mounting insulator.

11. Remove steering gear assembly from vehicle.

1.

Cotter pin

2.

Lower joint

3.

Power steering solenoid valve

4.

Steering gear assembly

5.

Rack mounting bracket

6.

Rack mounting insulator

Refer to 

GI-9, "Components"

 , for the symbols in the figure.

SGIA1361E

SGIA1183E

PS-16

POWER STEERING GEAR

INSTALLATION

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

●

Refer to 

PS-15, "COMPONENT"

  about each tightening torque.

●

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.

–

Align rear cover cap (1) projection (A) with the marking position
(B) of gear housing assembly.

–

Install slit part of lower shaft (C) aligning with the projection (A)
of rear cover cap (1). Make sure that the slit part of lower shaft
(C) is aligned with both the projection (A) of rear cover cap (1)
and the marking position (B) of gear housing assembly.

●

After installation, bleed air from the steering hydraulic system.
Refer to 

PS-7, "Air Bleeding Hydraulic System"

 .

●

Perform final tightening of nuts and bolts on each part under
unladen conditions with tires on level ground when removing
steering gear assembly. Check wheel alignment. Refer to 

FSU-

5, "Wheel Alignment Inspection"

 .

●

Adjust neutral position of spiral cable after checking wheel alignment. Refer to 

SRS-43, "INSTALLATION"

.

SGIA1546E