Nissan Murano Z50 (2007 year). Manual - part 155

POWER STEERING FLUID

PS-7

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

POWER STEERING FLUID

PFP:KLF20

Checking Fluid Level

NGS0003F

1.

Check fluid level with engine stopped.

2.

Make sure that fluid level is between MIN and MAX.

3.

Fluid levels at HOT and COLD are different. Do not confuse
them.

CAUTION:

●

The fluid level should not exceed the MAX line. Excessive
fluid will cause fluid leakage from the cap.

●

Do not reuse drained power steering fluid.

Checking Fluid Leakage

NGS0003G

1.

Check the lines for improper attachment and for leaks, cracks,
damage, loose connections, chafing or deterioration.

2.

Run engine until fluid temperature reaches 50 to 80

°

 C (122 to

176

°

F) in reservoir tank. Keep engine speed idle.

3.

Turn steering wheel right-to-left several times.

4.

Hold steering wheel at each “lock” position for five seconds to
check fluid leakage.

CAUTION:

Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)

5.

If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not over tighten con-
nector as this can damage O-ring, washer and connector.

6.

If fluid leakage from oil pump is noticed, check oil pump. Refer to 

PS-30, "POWER STEERING OIL

PUMP"

 .

7.

Check steering gear boots for accumulation of power steering fluid indicating a steering gear leak.

HOT

: Fluid temperature 50 - 80 

°

C (122 - 176

°

F)

COLD

: Fluid temperature 0 - 30

°

C (32 - 86

°

F)

SGIA0232J

SGIA0506E

PS-8

POWER STEERING FLUID

Revision: 2006 July

2007 Murano

Air Bleeding Hydraulic System

NGS0003H

1.

Turn steering wheel several times from full left stop to full right stop with engine off.

CAUTION:

●

Turn steering wheel while filling reservoir tank with fluid so as not to lower fluid level below the
MIN line.

●

When air bleeding is incomplete, the following phenomena occur. Although a fluid sound can be
heard from the gear and pump when turning the steering wheel all the way or slowly, this is not
a malfunction.

–

Bubbles are created in reservoir tank.

–

Clicking noise can be heard from power steering oil pump.

–

Excessive buzzing in the power steering oil pump.

2.

Start engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leakage.

3.

Repeat step 2 above several times at approximately 3 second intervals.

CAUTION:

Do not hold the steering wheel in a locked position for more than 10 seconds. (There is the possi-
bility that power steering oil pump may be damaged.)

4.

Check fluid for bubbles and while contamination.

5.

Stop engine if bubbles and white contamination do not drain out. Perform steps 2 and 3 above after wait-
ing until bubbles and white contamination drain out.

6.

Stop the engine, and then check fluid level.

STEERING WHEEL

PS-9

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

STEERING WHEEL

PFP:48430

On-Vehicle Service

NGS000BL

CONDITION OF INSTALLATION

1.

Check installation conditions of steering gear assembly, front suspension, axle and steering column.

2.

Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.

3.

Check the following items when steering wheel axial end play is out of the standard.

a.

Check the mounting nut and bolt of steering column assembly. Refer to 

PS-16, "COMPONENTS"

 .

b.

Check steering column. Refer to 

PS-14, "INSPECTION AFTER REMOVAL"

 .

4.

Check steering gear assembly mounting bolts and nut for looseness. Refer to 

PS-12, "COMPONENTS"

 .

STEERING WHEEL PLAY

1.

Set tires to the straight ahead, start engine, then turn steering wheel to the left and right lightly, and mea-
sure steering wheel movement on the outer circumference when steering wheel is turned up to the point
where tires start moving.

2.

Check the following items when steering wheel play is out of the standard.

a.

Check backlash for each joint of steering column.

b.

Check installation condition of steering gear assembly.

NEUTRAL POSITION ON STEERING WHEEL

1.

Make sure that steering gear assembly, steering column assembly and steering wheel are installed in the
correct position.

2.

Perform neutral position inspection after wheel alignment. Refer to 

FSU-5, "Wheel Alignment Inspection"

 .

3.

Set vehicle to the straight-ahead position and confirm steering wheel is in the neutral position.

4.

Loosen outer socket lock nut and turn inner socket to left and right equally to make fine adjustments if
steering wheel is not in the neutral position.

STEERING WHEEL TURNING FORCE

1.

Park vehicle on a level and dry surface, set parking brake.

2.

Tires need to be inflated normal pressure.

3.

Start engine.

4.

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

°

C (122 to 176

°

F).]

5.

Check steering wheel turning force when steering wheel has
been turned 540

°

 from neutral position.

NOTE:
Multiply the distance (L) from the hook of spring scale to the
center of steering wheel by the measurement value with a spring
scale.

6.

Check the following items when steering wheel turning force is
more than the standard.

a.

Check relief oil pressure of power steering oil pump. Refer to

PS-30, "RELIEF OIL PRESSURE"

 .

Steering wheel axial end play

: 0 mm (0 in) 

Steering wheel play

: 0 - 35 mm (0 - 1.37 in)

Steering wheel turning force:

7.45 N·m (0.76 kg-m, 66 in-lb) or less

SGIA1136E

PS-10

STEERING WHEEL

Revision: 2006 July

2007 Murano

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-12, "COMPO-

NENTS"

 .

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-21, "Disassembly and Assembly"

 .

FRONT WHEEL TURNING ANGLE

1.

Check toe-in. Refer to 

FSU-5, "Wheel Alignment Inspection"

 .

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-21, "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 (2WD)

: 215.8 - 274.6 N (22.1 - 28.0 kg, 48.6 - 61.7 lb)

Rack sliding force (AWD)

: 225.4 - 284.2 N (23.0 - 28.9 kg, 50.7 - 63.8 lb)

SST090B

SMA127

Inner wheel (Angle: A) 

Minimum

: 34

°

30

′

 (34.5

°

)

Nominal

: 38

°

00

′

 (38.0

°

)

Maximum

: 39

°

00

′

 (39.0

°

)

Outer wheel (Angle: B)

Nominal

: 31

°

30

′

 (31.5

°

)

SGIA0055E

Rack stroke “L”

: 71.5 mm (2.815 in)

SGIA0629J

STEERING WHEEL

PS-11

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

Removal and Installation

NGS0003J

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-43, "DRIVER AIR BAG MODULE"

 .

3.

Remove steering wheel lock nut after steering is locked.

4.

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

INSTALLATION

Note the following, and installation is in 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-45,

"INSTALLATION"

 .

Tool number

A: ST27180001 (J-25726-A)

SGIA1323E

Steering wheel lock nut

: 34.3 N·m (3.5 kg-m, 25 in-lb)

PS-12

STEERING COLUMN

Revision: 2006 July

2007 Murano

STEERING COLUMN

PFP:48810

Removal and Installation

NGS0003K

COMPONENTS

REMOVAL

1.

Set vehicle to the straight ahead-direction.

2.

Remove driver air bag module from steering wheel. Refer to 

SRS-43, "DRIVER AIR BAG MODULE"

 .

3.

Disconnect steering switch connector, remove steering wheel lock nut, then remove steering wheel. Refer
to 

SRS-45, "SPIRAL CABLE"

 .

4.

Remove fixing screw of tilt lever knob, then remove tilt lever
knob from tilt lever.

5.

Remove instrument driver lower panel. Refer to 

IP-10,

"INSTRUMENT PANEL ASSEMBLY"

 .

6.

Remove steering column cover and ignition key finisher. Refer
to 

IP-10, "INSTRUMENT PANEL ASSEMBLY"

 .

7.

Remove NATS antenna amp. Refer to 

BL-255, "How to Replace

NATS Antenna Amp."

 .

1.

Steering wheel

2.

Combination switch & spiral cable

3.

Steering column assembly

4.

Tilt lever knob

5.

Hole cover seal

6.

Clamp

7.

Hole cover

8.

Lower shaft

Refer to 

GI-10, "Components"

 , for the symbols in the figure.

SGIA1685E

SGIA0469E

STEERING COLUMN

PS-13

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

8.

Remove fixing screws of knee protector, then remove knee pro-
tector from vehicle.

9.

Remove combination switch and spiral cable from steering col-
umn assembly. Refer to 

SRS-45, "SPIRAL CABLE"

 .

10. Disconnect harness connector from each switch on steering col-

umn shaft, then separate vehicle side harness from it.

11. Remove lock nut and bolt, then separate lower shaft (1) from

upper joint (2).

12. Remove mounting nuts from steering member, remove steering

column assembly from steering member.

CAUTION:

●

Do not give axial impact to steering column assembly
during removal.

●

Do not move steering gear assembly when removing
steering column assembly.

13. Loosen clamp, and then remove hole cover seal from hole

cover.

14. Remove mounting nuts of hole cover, and then remove clamp

and hole cover from dash panel.

15. Raise vehicle, and then remove mounting bolt (lower side) of

lower shaft (1) and remove lower shaft (1) from vehicle.

SGIA0470E

SGIA1137E

SGIA1174E

SGIA1138E

PS-14

STEERING COLUMN

Revision: 2006 July

2007 Murano

INSPECTION AFTER REMOVAL

●

Check each part of steering column assembly, hole cover seal, clamp, hole cover and lower shaft for dam-
age or other malfunctions. Replace if there are.

●

Measure the length “L1” or “L2” as shown in the figure if vehicle
has been involved in a minor collision. Replace steering column
assembly if outside the standard.

●

Measure steering column rotating torque using preload gauge.
Replace steering column assembly if outside the standard.

●

Check tilt mechanism operating range “L” as shown in the figure.

CAUTION:

Measure the operating range “L” at the end of the shaft.

INSTALLATION

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

●

Refer to 

PS-12, "COMPONENTS"

  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:

Do not give axial impact to 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 sub-gear assembly and measure the distance of inner socket, and
then measure the intermediate position of the distance.

–

Align rear cover cap 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.

INSPECTION AFTER INSTALLATION

●

Make sure that steering wheel operates smoothly by turning several times from full left stop to full right
stop.

Steering column length

L1: 182 mm (7.17 in)

L2: 242.6 mm (9.55 in)

Turning torque

: 0 - 0.2 N·m (0 - 0.02 kg-m, 0 - 2 in-lb)

Operating range “L”

: 49.4 mm (1.945 in)

SGIA0475E

SGIA1538E

SGIA1140E

STEERING COLUMN

PS-15

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

Disassembly and Assembly

NGS0003L

COMPONENTS

DISASSEMBLY

1.

Remove spring from steering column assembly and tilt lever.

2.

Remove fixing bolt of upper joint, then remove upper joint from
steering column assembly.

ASSEMBLY

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

●

Refer to 

PS-15, "COMPONENTS"

  about each tightening torque.

1.

Steering column

2.

Upper joint

3.

Spring

Refer to 

GI-10, "Components"

 , for the symbols in the figure.

SGIA1686E

SGIA0479E

PS-16

POWER STEERING GEAR

Revision: 2006 July

2007 Murano

POWER STEERING GEAR

PFP:49001

Removal and Installation

NGS0003M

COMPONENTS

REMOVAL
2WD

1.

Set vehicle to the straight-ahead position.

2.

Remove lock nut and bolt, then separate lower shaft (1) from
upper joint (2).

3.

Remove tires from vehicle with power tool.

4.

Confirm slit of lower shaft (C) fits with the projection (A) on rear
cover cap (1), furthermore marking position (B) on steering gear
assembly nearly fits with the projection (A) on rear cover cap (1).

5.

Remove cotter pin at steering knuckle, then loosen mounting
nut.

1.

Rack mounting bracket

2.

Steering gear assembly 

3.

Cotter pin

4.

Sleeve

5.

Rack mounting insulator

Refer to 

GI-10, "Components"

 , for the symbols in the figure.

SGIA1687E

SGIA1137E

SGIA1140E

POWER STEERING GEAR

PS-17

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

6.

Remove steering outer socket from steering knuckle so as not to
damage ball joint boot 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.

7.

Remove high-pressure piping (1) and low-pressure hose (2) of
hydraulic piping, and then drain power steering fluid. Refer to

PS-36, "Removal and Installation"

 .

8.

Remove mounting bolt (lower side) of lower shaft (1).

CAUTION:

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

9.

Remove mounting bolts and nut of steering gear assembly, and
then remove steering gear assembly, rack mounting bracket,
rack mounting insulator and sleeve from vehicle.

SGIA1164E

SGIA1165E

SGIA1138E

SGIA0458E

PS-18

POWER STEERING GEAR

Revision: 2006 July

2007 Murano

AWD

1.

Set vehicle to the straight-ahead position.

2.

Remove lock nut and bolt, then separate lower shaft (1) from
upper joint (2).

3.

Remove tires from vehicle with power tool.

4.

Remove undercover from vehicle with power tool.

5.

Confirm slit of lower shaft (C) fits with the projection (A) on rear
cover cap (1), furthermore marking position (B) on steering gear
assembly nearly fits with the projection (A) on rear cover cap (1).

6.

Remove high-pressure piping (1) and low-pressure hose (2) of
hydraulic piping, and then drain power steering fluid. Refer to

PS-36, "Removal and Installation"

 .

7.

Remove cotter pin at steering knuckle, then loosen mounting
nut.

8.

Remove steering outer socket from steering knuckle so as not to
damage ball joint boot 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.

SGIA1137E

SGIA1140E

SGIA1165E

SGIA1164E

POWER STEERING GEAR

PS-19

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

9.

Remove mounting bolt (lower side) of lower shaft (1).

CAUTION:

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

10. Remove front exhaust tube with power tool. Refer to 

EX-3,

"EXHAUST SYSTEM"

 .

11. Remove rear propeller shaft. Refer to 

PR-4, "REAR PROPEL-

LER SHAFT"

 .

12. Remove mounting nuts on lower position of stabilizer connecting

rod with power tool.

13. Remove mounting bolts of stabilizer clamp and hang stabilizer on vehicle with power tool.

14. Remove steering hydraulic piping bracket from front suspension member. Refer to 

PS-36, "HYDRAULIC

LINE"

 .

15. Disconnect electrical rear engine mounting actuator harness connector. Refer to 

EM-108, "ENGINE

ASSEMBLY"

 .

16. Set jack under engine and front suspension member.

17. Remove mounting bolts of rear engine mounting insulator with power tool. Refer to 

EM-108, "ENGINE

ASSEMBLY"

 .

18. Loosen mounting nuts of front suspension member (front side).

19. Remove mounting bolts of member stay (body side) with power tool, then loosen mounting nuts of mem-

ber stay (front suspension member side).

20. Move jack down slowly (front suspension member side) to remove rear engine mounting insulator from

engine and front suspension member.

21. Remove mounting bolts and nut of steering gear assembly, and

then remove steering gear assembly, rack mounting bracket,
rack mounting insulator and sleeve from vehicle.

SGIA1138E

SGIA0458E

PS-20

POWER STEERING GEAR

Revision: 2006 July

2007 Murano

INSTALLATION

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

●

Refer to 

PS-16, "COMPONENTS"

  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 pinion assembly and measure the distance of inner socket, and
then measure the intermediate position of the distance.

–

Align rear cover cap 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-8, "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 steering angle sensor after checking
wheel alignment. Refer to 

SRS-45, "INSTALLATION"

 .

INSPECTION AFTER INSTALLATION

●

Make sure that steering wheel operates smoothly by turning several times from full left stop to full right
stop.

SGIA1140E

POWER STEERING GEAR

PS-21

C

D

E

F

H

I

J

K

L

M

A

B

PS

Revision: 2006 July

2007 Murano

Disassembly and Assembly

NGS0003N

COMPONENTS

1.

Outer socket

2.

Boot clamp

3.

Boot

4.

Inner socket

5.

Boot clamp

6.

Gear housing assembly

7.

Cylinder tubes

8.

Rack oil seal

9.

Rack assembly

10. Rack Teflon ring

11.

O-ring

12. End cover assembly

13. Pinion assembly

14. O-ring

15. Rear cover

16. Rear cover cap

Refer to 

GI-10, "Components"

  and the followings for the symbols in the figure.

: Apply power steering fluid.

: Apply Genuine Liquid Gasket, Three Bond 1111B or equivalent.

: Apply multi-purpose grease.

SGIA1684E

PS-22

POWER STEERING GEAR

Revision: 2006 July

2007 Murano

DISASSEMBLY

CAUTION:

●

Disassemble steering gear assembly by securing the mounting area in a vise using copper plates.

●

Clean steering gear assembly with kerosene before disassembling. Be careful to avoid splashing
or applying any kerosene over connector of discharge port or return port.

1.

Remove cylinder tubes from gear housing assembly.

2.

Remove rear cover cap from gear housing assembly.

3.

Measure adjusting screw height “H”, and loosen adjusting
screw.

CAUTION:

●

Do not loosen adjusting screw 2 turns or more.

●

Replace steering gear assembly if adjusting screw is
loosened 2 turns or more and it is removed.

4.

5.

Use a Tool (A) to remove rear cover from pinion assembly.

6.

Remove O-ring with a flat-bladed screwdriver, and pull out rear
cover.

7.

Remove pinion assembly from gear housing assembly.

CAUTION:

In order to protect oil seal from any damage, pull pinion
assembly out straightly.

8.

Loosen lock nut of outer socket, and remove outer socket.

9.

Remove boot clamp, and then remove boot from inner socket.

CAUTION:

●

Do not damage inner socket and gear housing assembly
when removing boot.

●

Inner socket and gear housing assembly must be replaced if inner socket and gear housing
assembly are damaged because it may cause foreign material interfusion.

10. Drill out the clinching part of gear housing assembly (end cover

assembly side) outer rim with a 3 mm (0.12 in) drill bit. [Drill for
approximately 1.5 mm (0.059 in) depth.] 

SGIA0624E

Tool number

A: KV48104400 (J-46213)

SGIA1542E

SGIA0508E

STC0013D