OIL INFINITI FX35 2007 Service Manual

POWER STEERING GEAR AND LINKAGE PS-19
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Revision: 2006 July 2007 FX35/FX45
7. Remove oil pipings (high pressure side and low pressure side)
from steering gear assembly, then drain fluid from pipings.
8. Remove mounting bolt of steering hydraulic piping bracket from steering gear assembly.
9. Remove mounting bolt (lower side) of lower joint.
10. Remove mounting bolts of steering gear assembly with power tool, and then remove steering gear assembly from vehicle.
SGIA0541E
SGIA0545E
SGIA0542E
SGIA0546E

POWER STEERING GEAR AND LINKAGE PS-21
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Revision: 2006 July 2007 FX35/FX45
Disassembly and AssemblyNGS000C4
COMPONENTS
1. Outer socket 2. Boot clamp 3. Boot
4. Inner socket 5. Boot clamp 6. Gear housing assembly
7. Rack oil seal 8. Rack assembly 9. Rack Teflon ring
10. O-ring 11. End cover assembly 12. Cylinder tubes
13. Pinion assembly 14. O-ring 15. Rear cover
16. Rear cover cap
Refer to GI-11, "
Components" and the followings for the symbols in the figure.
: Apply power steering fluid.
: A p p l y G e n u i n e L i q u i d G a s k e t , T h r e e B o n d 1111 B o r e q u i v a l e n t . : Apply multi-purpose grease.
SGIA1678E

PS-22
POWER STEERING GEAR AND LINKAGE
Revision: 2006 July 2007 FX35/FX45
CAUTION:

Secure steering gear assembly with a vise, using copper
plates or something similar to prevent it from being dam-
aged. Do not grip cylinder with a vise.

Before performing disassembly, clean steering gear assem-
bly with kerosene. Be careful not to bring any kerosene into
contact with the discharge and return port connectors.
DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Remove rear cover cap from gear housing assembly.
3. Measure adjusting screw height from gear housing assembly, then loosen adjusting screw.
CAUTION:

Do not turn adjusting screw more than twice.

Replace steering gear assembly when adjusting screw is
removed or more than twice.
4. Use a rear cover wrench (SST) to remove rear cover from pinion assembly.
5. Remove O-ring with a flat-bladed screwdriver, and pull out rear cover.
6. Remove pinion assembly from gear housing assembly. CAUTION:
In order to protect oil seal from any damage, pull pinion
assembly out straightly.
7. Loosen lock nut of outer socket, and remove outer socket.
8. Remove boot clamps of the small diameter side and the large diameter side, then remove boot.
CAUTION:
When removing boots, be careful not to damage inner
socket and gear housing assembly. If they are damaged, change them to avoid oil leaks.
SGIA0544E
SGIA0568E
SGIA0728E
SGIA0508E

POWER STEERING GEAR AND LINKAGE PS-23
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Revision: 2006 July 2007 FX35/FX45
9. Drill out the clinching part of cylinder outer rim with a 3 mm (0.12
in) drill in 1.5 mm (0.059 in) depth.
10. Remove end cover assembly with a 45 mm (1.77 in) open head (suitable tool).
CAUTION:
Be careful not to damage rack. If it is damaged, replace
rack. Otherwise, oil leaks may result.
11. Pull rack assembly with rack oil seal out of gear housing assem- bly.
CAUTION:
Be careful not to damage cylinder. If it is damaged, replace
gear housing assembly. Otherwise, oil leaks may result.
12. Heat rack Teflon ring to approximately. 40 °C (104 °F) with a
dryer, then remove it and O-ring from rack.
CAUTION:
Be careful not to damage rack. If it is damaged, change to a
new one to avoid oil leaks.
13. Use a taped 29 mm (1.14 in) socket and an extension bar. Remove rack oil seal from gear housing assembly.
CAUTION:
Be careful not to damage gear housing assembly and cylin-
der inner wall. If it is damaged, gear housing assembly
must be replaced. Otherwise, oil leaks will result.
STC0013D
SST081B
SGIA0151E
SGIA0179E

POWER STEERING GEAR AND LINKAGE PS-25
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Revision: 2006 July 2007 FX35/FX45
Axial End Play

Apply load of 490 N (50 kg, 110 lb) to ball stud axially. Use a dial
gauge to measure the amount of the movement that the stud
makes. Check if the reading is within the specified below. If the
value is outside the standard, replace outer and inner sockets.
ASSEMBLY
1. Apply recommended fluid to O-ring. Put an O-ring into rack Teflon ring.
2. Heat rack Teflon ring to approximately 40 °C (104 °F) with a
dryer. Assemble it to mounting groove of rack.
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 recommended grease to rack oil seal. Insert rack oil seal, then insert rack assembly to gear housing assembly.
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.
Outer socket 0.5 mm (0.02 in) or less
Inner socket 0.2 mm (0.01 in) or less
SGIA0057E
SGIA0153E
SGIA0154E
SGIA0205E

PS-26
POWER STEERING GEAR AND LINKAGE
Revision: 2006 July 2007 FX35/FX45
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 at 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 pinion assembly to gear housing assembly. CAUTION:
In order to protect oil seal from any damage, insert pinion
assembly out straightly.
8. Apply recommended fluid to O-ring. Install O-ring to rear cover.
9. Use a rear cover wrench (SST), install rear cover to gear hous- ing assembly.
SGIA0155E
SGIA0548E
SGIA0157E
SST081B
SGIA0158E

PS-30
POWER STEERING OIL PUMP
Revision: 2006 July 2007 FX35/FX45
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceNGS000C5
CHECKING RELIEF OIL PRESSURE (VQ35DE MODELS)
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 pres-
sure 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-33, "
Disas-
sembly and Assembly (VQ35DE Models)" .
5. After inspection, disconnect oil pressure gauge (SST) and oil pressure gauge adapter (SST) from hydrau- lic circuit, connect oil pump discharge connector and high pressure hose. Add fluid and bleed air from
hydraulic circuit thoroughly.
Refer to PS-8, "
Air Bleeding Hydraulic System" .
SGIA0570E
SST
Pressure gauge KV48103500
(J-26357&J-26357-10)
Oil pump side Eye joint KV48102500-01 ( — )
Washer KV48102500-04 ( — )
Bolt KV48102500-03 ( — )
High pressure piping side Flare joint KV48102500-02 ( — )
Washer KV48102500-04 ( — )
Bolt KV48102500-03 ( — )
Relief oil pressure : 9,900 - 10,700 kPa (101 - 109.1 kg/cm
2 , 1436 - 1552 psi)
SGIA0522E

POWER STEERING OIL PUMP PS-31
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Revision: 2006 July 2007 FX35/FX45
CHECKING RELIEF OIL PRESSURE (VK45DE MODELS)
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-37, "
Disas-
sembly and Assembly (VK45DE Models)" .
5. After inspection, disconnect oil pressure gauge (SST) and oil pressure gauge adapter (SST) from hydrau- lic circuit, connect oil pump discharge connector and high pressure hose. Add fluid and bleed air from
hydraulic circuit thoroughly. Refer to PS-8, "
Air Bleeding Hydraulic System" .
SGIA0570E
SST
Pressure gauge and shut-off valve KV48103500
(J26357 and J26357-10)
Oil pump side Connector A and O-ring
KV48105300-4 and 5295262U10
(—)
Eye-bolt and O-ring KV48105300-3 and 5295262U00
(—)
High pressure
piping side Connector B and O-ring
KV48105300-1 and 5295262U00
(—)
Nut KV48105300-2 ( — )
SGIA0572E
Relief oil pressure : 9,900 - 10,700 kPa (101 - 109.1 kg/cm
2 , 1436 - 1552 psi)

PS-32
POWER STEERING OIL PUMP
Revision: 2006 July 2007 FX35/FX45
Removal and Installation (VQ35DE Models)NGS000C6
REMOVAL
1. Remove undercover from vehicle with power tool.
2. Loosen belt tensioner adjust screw, then remove belt from oil pump pulley. Refer to EM-15, "
DRIVE
BELTS" .
3. Drain power steering fluid from reservoir tank.
4. Remove piping of high pressure and low pressure (drain fluid from their pipings). Refer to PS-41,
"HYDRAULIC LINE" .
5. Remove mounting bolts, then remove power steering pump.
INSTALLATION
Refer to PS-41, "HYDRAULIC LINE" for tightening torque. Install in the reverse order removal.

After installation, adjust belt tension. Refer to EM-15, "DRIVE BELTS" .

After installation, bleed air. Refer to PS-8, "Air Bleeding Hydraulic System" .
Removal and Installation (VK45DE Models)NGS000C7
REMOVAL
1. Remove undercover from vehicle with power tool.
2. Remove power steering oil pump belt from auto tensioner. Refer to EM-174, "
DRIVE BELTS" .
3. Drain power steering fluid from reservoir tank.
4. Remove piping of high pressure and low pressure from power steering oil pump (drain fluid from their pip- ings). Refer to PS-41, "
HYDRAULIC LINE" .
5. Remove mounting bolts, then remove power steering pump.
INSTALLATION
Refer to PS-41, "HYDRAULIC LINE" for tightening torque. Install in the reverse order removal.
After installation, bleed air. Refer to PS-8, "
Air Bleeding Hydraulic System" .
NOTE:
Adjustment of belt tension is no necessary because engine of this model equips auto tensioner.

POWER STEERING OIL PUMP PS-33
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Revision: 2006 July 2007 FX35/FX45
Disassembly and Assembly (VQ35DE Models)NGS000C8
COMPONENTS
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 rear side plate from cartridge, then remove Teflon ring and O-ring from rear side plate.
3. Remove rotor snap ring with snap ring pliers, and remove pulley from body assembly.
CAUTION:
When removing rotor snap ring, be careful not to damage
pulley shaft.
4. Remove oil seal from body assembly.
1. Rear cover 2. Teflon ring 3. O-ring
4. Rear side plate 5. Rotor snap ring 6. Dowel pin
7. Cam ring 8. Rotor 9. Vane
10. Cartridge 11. Front side plate 12. O-ring
13. Flow control valve A 14. Spring 15. Flow control valve B assembly
16. Body assembly 17. Oil seal 18. Pulley
19. O-ring 20. Suction pipe 21. Bracket
SGIA1679E
SGIA0059E