Nissan Murano Z50 (2004 year). Manual - part 195

 

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Nissan Murano Z50 (2004 year). Manual - part 195

 

 

POWER STEERING GEAR AND LINKAGE

PS-23

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ASSEMBLY

1.

Apply Nissan PSF or equivalent to O-ring. Put an O-ring into rack Teflon ring.

NOTE:
Do not reuse O-ring.

2.

Heat rack Teflon ring to approximately 40

°

C (104

°

F) with a

dryer. Assemble it to mounting groove of rack.

NOTE:
Do not reuse rack Teflon ring.

3.

To fit rack Teflon ring on rack, use rack Teflon ring installation
tool (SST) from tooth side. Compress rim of ring with the tool.

4.

Apply Multi-purpose grease to rack oil seal. Insert rack oil seal, then insert rack assembly to gear housing
assembly.

NOTE:
Do not reuse rack oil seal.

CAUTION:

When inserting rack assembly, do not damage retainer sliding part. If it is damaged, replace
gear housing assembly. 

When inserting rack assembly, do not damage cylinder inner wall. If it is damaged, it may cause
oil leaks. Replace gear housing assembly. 

Attach rack oil seal. Both inner lip and outer lip should
face each other.

SGIA0153E

SGIA0154E

SGIA0205E

PS-24

POWER STEERING GEAR AND LINKAGE

Revision: 2004 November

2004 Murano

a.

To avoid damaging inner rack oil seal, wrap an OHP sheet
[approximately. 70 mm (2.76 in) 

×

 100 mm (3.94 in)] around rack

tooth. Place oil seal on sheet. Then, pull oil seal along with OHP
sheet until they pass the toothed section of rack, then remove it.

b.

Insert rack oil seal (inner) to piston (rack Teflon ring) position
and push retainer to adjust screw side with fingers lightly, and
then make rack move in gear housing assembly, install rack oil
seal (inner) to fit with gear housing assembly.

c.

When installing outer rack oil seal, cover the end of rack with an
OHP sheet [70 mm (2.76 in) 

×

 100 mm (3.94 in)]. It will avoid

damaging rack oil seal. Then place oil seal on sheet. Pull rack oil
seal along with OHP sheet until they pass rack end. Then
remove OHP sheet.

d.

Install end cover assembly to rack, move it to gear housing assembly.

5.

Using a 45 mm (1.77 in) open head (suitable tool), tighten end cover assembly to the specified torque.

CAUTION:

Do not damage rack surface. If it is damaged, it may cause oil leaks. Replace rack assembly.

6.

After tightening end cover assembly, caulk cylinder at one point
as shown in the figure using a punch. This will prevent end cover
from getting loose.

7.

Install sub-gear assembly to gear housing assembly.

CAUTION:

In order to protect oil seal from any damage, insert sub-gear assembly out straightly.

8.

Apply Nissan PSF or equivalent to O-ring. Install O-ring to rear cover.

SGIA0155E

SGIA0569E

SGIA0157E

Tightening torque

: 58.9 - 73.5 N·m (6.0 - 7.4 kg-m, 44 - 54 ft-lb)

SGIA0158E

POWER STEERING GEAR AND LINKAGE

PS-25

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NOTE:
Do not reuse O-ring.

9.

Use a rear cover wrench (SST) to install rear cover to gear housing assembly.

10. Confirm projection on rear cover cap nearly fit with marking position on gear housing assembly.
11. Apply thread locking adhesive (Three Bond TB1111B or equiva-

lent. Refer to 

GI-47

  ) to the thread of adjusting screw to the

adjusting screw height from gear housing assembly. The adjust-
ing screw height is the same as it was measured in the overhaul
in advance.

12. Rotate ten times throughout whole range of rack so that parts fit with each other.

13. Measure pinion rotating torque within from -180

°

 to +180

°

, make

preload gauge (SST) and torque adapter (SST) in rack neutral
position, then hold preload gauge (SST) at maximum torque.

14. After loosening adjusting screw once, tighten it again with torque of 4.9 - 5.9 N·m (0.50 - 0.60 kg-m, 44 -

52 in-lb). Furthermore loosen it within from 20

°

 to 40

°

.

15. Measure pinion rotating torque with torque adapter (SST) and

preload gauge (SST), then confirm whether their readings are
within the specified range. If the readings are not within the
specified ranges, readjust screw angle with adjusting screw.
Change gear assembly to new one, if the readings are still not
within the specified ranges, or the rotating torque of adjusting
screw is less than 5 N·m (0.51 kg-m, 44 in-lb).

16. Turn pinion fully to the end of the left with inner socket to gear housing assembly.

SGIA0568E

SGIA0483E

Pinion rotating torque:

                      Around neutral position (within 

±

100

°

)

Average “A”:

                0.8 - 2.0 N·m (0.09 - 0.20 kg-m, 7 - 17 in-lb)

Other than above (more than 

±

100

°

)

Maximum variation “B”:

                2.3 N·m (0.23 kg-m, 20 in-lb)

SGIA0160E

PS-26

POWER STEERING GEAR AND LINKAGE

Revision: 2004 November

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17. Set dial gauge to rack as shown in the figure. Measure vertical

movement of rack when pinion is turned counterclockwise with
torque of 19.6 N·m (2.0 kg-m, 14 ft-lb). Check reading is within
the specified range. If reading is outside of specification, read-
just screw angle with adjusting screw. If reading is still outside of
specification, or if the rotating torque of adjusting screw is less
than 5 N·m (0.51 kg-m, 44 in-lb), replace steering gear assem-
bly.

18. Install large-diameter side of boot to gear housing assembly.
19. Install small-diameter side of boot to the mounting groove of

inner socket boot.

20. Install boot clamp to the small-diameter side of boot.

21. Lock new larger boot clamp securely with a suitable tool.

NOTE:

Do not reuse boot clamp.

Secure boot band so that dimension “M” as shown in the fig-
ure satisfies the following:

SGIA0484E

Amount of vertical movement with rack

Less than 0.265 mm (0.010 in)

Measuring point

Shaft direction of rack

5 mm (0.197 in) away from end 
of gear housing assembly

Radius direction of rack

Shaft direction of adjusting 
screw

SGIA0550E

RAC1133D

Dimension “M”:

Max: 3.5 mm (0.138 in)

DSF0047D

POWER STEERING GEAR AND LINKAGE

PS-27

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22. Install cylinder tubes to gear housing assembly.

23. Install lock nut and outer socket to inner socket.

24. Tighten lightly tie-rod in specified length “L”, then tighten lock nut

at specified torque. Refer to 

PS-19, "Disassembly and Assem-

bly"

  . Reconfirm if tie-rod length is within limit of specified length

“L”.

CAUTION:

Perform toe-in adjustment after this procedure. Length
achieved after toe-in adjustment is not necessarily value
given here.

Tightening torque:

            19.7 - 26.4 N·m (2.0 - 2.6 kg-m, 15 - 19 in-lb)

SGIA0500E

Tie-rod length “L”

: 135.2 mm (5.32 in)

SGIA0167E

PS-28

POWER STEERING OIL PUMP

Revision: 2004 November

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POWER STEERING OIL PUMP

PFP:49110

On-Vehicle Inspection and Service

AGS000CR

CHECKING RELIEF OIL PRESSURE

CAUTION:

Before starting work, confirm belt tension is proper.

1.

Connect oil pressure gauge (SST) and oil pressure gauge
adapter (SST) between oil pump discharge connector and high
pressure hose and then bleed air from the hydraulic circuit.

2.

Start engine. Allow engine to run until tank temperature reaches 50 to 80

°

C (122 to 176

°

F).

CAUTION:

Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed,
fluid pressure in power steering pump increases to maximum. This will raise fluid temperature
excessively.

Be careful not to contact hose with belt when engine is started.

3.

With engine at idle, close shut-off valve and read the relief oil
pressure.

CAUTION:

Do not close shut-off valve of pressure gauge for more than
10 seconds.

4.

After measurement, open shut-off valve slowly.

If relief oil pressure is outside the specification, disassemble
and repair oil pump. Refer to 

PS-29, "Disassembly and

Assembly"

 .

5.

After inspection, disconnect oil pressure gauge (SST) and oil
pressure gauge adapter (SST) from hydraulic circuit, connect oil
pump discharge connector and high pressure hose. Add fluid
and bleed air from hydraulic circuit thoroughly.
Refer to  

PS-6, "Air Bleeding Hydraulic System"

 .

Removal and Installation

AGS000CS

REMOVAL

1.

Remove tires with power tool.

2.

Remove side splash guard from vehicle with power tool.

SGIA0570E

Relief oil pressure:

8,000 - 8,800 kPa (81.60 - 89.76 kg/cm

2

 , 1160 - 1276 psi)

SGIA0501E

POWER STEERING OIL PUMP

PS-29

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3.

Remove heat insulator from vehicle.

4.

Loosen adjust screw and oil pump fixing bolt, then remove belt from oil pump pulley. Refer to 

EM-105,

"ENGINE ASSEMBLY"

 .

5.

Drain power steering fluid from reservoir tank.

6.

Remove piping of high pressure and low pressure (drain fluid from their pipings). Refer to 

PS-34,

"HYDRAULIC LINE"

 .

7.

Remove mounting bolts, then remove power steering pump.

INSTALLATION

Refer to  

PS-34, "HYDRAULIC LINE"

   for tightening torque. Install in the reverse order of removal.

After installation, adjust belt tension. Refer to 

EM-11, "DRIVE BELTS"

 .

After installation, bleed air. Refer to  

PS-6, "Air Bleeding Hydraulic System"

 .

Disassembly and Assembly

AGS000CT

SGIA0502E

1.

Rear cover

2.

Gasket

3.

Lock pin

4.

Cam ring

5.

Rotor

6.

Vane

7.

Cartridge

8.

Side plate

9.

O-ring

10. Body assembly

11.

Oil seal

12. Drive shaft assembly

13. Snap ring

14.

Pulley

15. Spring washer

16. Bracket

17.

Suction pipe

18. O-ring

19. Washer

20.

Joint

21. Flow control valve 

22. Spring

SGIA0827E

PS-30

POWER STEERING OIL PUMP

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INSPECTION BEFORE DISASSEMBLY

Disassemble power steering oil pump only if the following items are found.

Oil leakage from oil pump

Deformed or damaged pulley

Poor performance 

DISASSEMBLY

NOTE:
Fix oil pump in vise as the occasion demands.

CAUTION:

When retaining drive shaft in a vise, always use copper or aluminum plates between vise and shaft.

1.

Unscrew four rear cover bolts and remove rear cover from body assembly.

2.

Remove gasket from body assembly.

3.

Remove lock pin, cartridge and side plate from body assembly.

4.

Remove pulley from drive shaft.

5.

Unscrew mounting bolts of bracket and remove bracket from body assembly.

6.

Remove snap ring from drive shaft assembly and press out it.

CAUTION:

When removing snap ring, be careful not to damage drive
shaft assembly.

7.

Using a screwdriver, remove oil seal for body assembly.

8.

Remove O-ring from body assembly.

9.

Loosen eye bolt and remove joint and washer, then pull out flow
control valve and spring from body assembly.

10. Remove suction pipe from body assembly.
11. Remove O-ring for suction pipe.

SST010B

SST034A

SST036A

POWER STEERING OIL PUMP

PS-31

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INSPECTION AFTER DISASSEMBLY
Body Assembly and Rear Cover Inspection

Check body assembly and the inside of rear cover for damage. If any damage is found, replace with new
part for rear cover, and replace with new power steering pump assembly for body assembly.

Cartridge Assembly Inspection

Check cam ring, side plate, rotor and vane for damage. If any damage is found, replace cartridge assem-
bly with new one.

Relief Valve Assembly Inspection

Check relief valve assembly for damage. If any damage is found, replace it with new one.

ASSEMBLY

NOTE:
Fix oil pump in vise as vise occasion demands.

CAUTION:

When retaining drive shaft in a vise, always use copper or aluminum plates between vise and shaft.

1.

Apply a coat of Nissan PSF or equivalent to oil seal lip and to the
circumference of oil seal. Using proper tool, such as hand press
machine, install it to body assembly.

NOTE:
Do not reuse oil seal.

2.

Apply a coat of Nissan PSF or equivalent to drive shaft, and press drive shaft assembly into body assem-
bly with suitable tool, then install snap ring.

3.

Apply a coat of Nissan PSF or equivalent to O-ring and install O-ring into body assembly.

NOTE:
Do not reuse O-ring.

4.

Install side plate to body assembly.

SST038A

SGIA0422E

PS-32

POWER STEERING OIL PUMP

Revision: 2004 November

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5.

Install lock pin into lock pin hole, and install cam-ring as shown
in the figure.

When installing cam-ring, turn carved face with a letter on it to
rear cover.

CAUTION:

Do not confuse the assembling direction of cam ring. If
cam ring is installed facing the incorrect direction, it may
cause pump operation malfunction.

6.

Install rotor to body assembly.

When installing rotor, turn punch mark face on rotor to body
assembly.

7.

Install vane to rotor with arc of vane in contact with cam ring.

8.

Check if drive shaft assembly turns smoothly.

9.

Install gasket to body assembly.
NOTE:
Do not reuse gasket.

SGIA0423E

SGIA0424E

SST843A

POWER STEERING OIL PUMP

PS-33

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10. Install rear cover to body assembly and tighten bolts to the spec-

ified torque.

11. Install bracket to body assembly, and tighten the two mounting bolts to the specified torque.

12. Install pulley to drive shaft assembly, then tighten lock nut to the specified torque.

13. Install spring, flow control valve, washer, joint and eye bolt to body assembly. Then tighten eye bolt to the

specified torque.

NOTE:
Do not reuse washer.

14. Apply a coat of Nissan PSF or equivalent to O-ring and Install O-ring to suction pipe.

15. Install suction pipe to body assembly.

SGIA0425E

PS-34

HYDRAULIC LINE

Revision: 2004 November

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HYDRAULIC LINE

PFP:49721

Components (2WD Models)

AGS000CU

SGIA0828E

HYDRAULIC LINE

PS-35

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1.

Reservoir tank

2.

Reservoir tank bracket

3.

Suction hose

4.

High pressure hose

5.

Oil pump

6.

Steering gear assembly

7.

Eye bolt

8.

Oil pressure sensor

9.

Copper washer

10.

Clamp

11. Eye joint

 

PS-36

HYDRAULIC LINE

Revision: 2004 November

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Components (AWD Models)

AGS000PP

SGIA1216E

HYDRAULIC LINE

PS-37

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Removal and Installation

AGS000F5

Refer to 

PS-34, "Components (2WD Models)"

   for tightening torque. Install in the reverse order of

removal.

NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Ensure that hose touches spool of tube when tube is to be
inserted to hose.

CAUTION:

Do not apply power steering fluid to the junction surface
between tube and hose.

To install eye joint, join projection of eye joint into notch of power
steering pump, and attach eye joint to power steering pump
properly. Then, fully tighten eye bolt by hands, and tighten it to a
specified torque.

Connect harness connector into pressure sensor securely.

1.

Reservoir tank

2.

Reservoir tank bracket

3.

Suction hose

4.

High pressure hose

5.

Oil pump

6.

Steering gear assembly

7.

Eye bolt

8.

Oil pressure sensor

9.

Copper washer

10.

Clamp

11. Eye joint

 

SGIA0514E

SGIA0515E

PS-38

SERVICE DATA AND SPECIFICATIONS (SDS)

Revision: 2004 November

2004 Murano

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Steering Wheel

AGS000CV

Steering Angle

AGS000CW

Steering Column

AGS000CX

Steering Outer Socket and Inner Socket

AGS000CY

Steering wheel axial end play

0 mm (0 in)

Steering wheel free play

0 - 35 mm (0 - 1.38 in)

Tire size

18 inch

Inner wheel
Degree minute (Decimal degree)

Minimum

34

°

 30

 (34.5

°

)

Nominal

38

°

 00

 (38.0

°

)

Maximum

39

°

 00

 (39.0

°

)

Outer wheel
Degree minute (Decimal degree)

Nominal

31

°

 30

 (31.5

°

)

Steering column length “L1”

182 mm (7.17 in)

Steering column length “L2”

242.6 mm (9.55 in)

SGIA0475E

Steering gear type

PR26AM

Tie-rod outer ball joint

Swinging torque

0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3 - 25 in-lb)

Measurement on spring balance

Measuring point: cotter pin hole of stud

4.84 - 46.7 N (0.50 - 4.7 kg, 4 - 34 lb)

Rotating torque

0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3 - 25 in-lb)

Axial end play

0.5 mm (0.02 in) or less

Tie-rod inner ball joint

Swinging torque

1.0 - 7.8 N·m (0.11 - 0.79 kg-m, 9 - 69 in-lb)

Measurement on spring balance

Measuring point: L mark see below, 
L=83.2 mm (3.276 in).

12.1 - 93.7 N (1.3 - 9.5 kg, 9 - 69 lb)

Axial end play

0.2 mm (0.008 in) or less

SGIA0547E

 

 

 

 

 

 

 

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