2005 INFINITI FX35 oil pressure

PS-20
POWER STEERING GEAR AND LINKAGE
Revision: 2005 July 2005 FX
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.
INSTALLATION

Refer to PS-19, "Removal and Installation" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing steering components, check wheel alignment. Refer to FSU-6,
"Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .
SGIA0541E
SGIA0545E
SGIA0542E
SGIA0546E

POWER STEERING OIL PUMP PS-31
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Revision: 2005 July 2005 FX
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceAGS000H2
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" .
CHECKING RELIEF OIL PRESSURE (VK45DE MODELS)
CAUTION:
Before starting work, confirm belt tension is proper.
SGIA0570E
SST
Pressure gauge KV48103500
(J26357&J26357-10)
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

PS-32
POWER STEERING OIL PUMP
Revision: 2005 July 2005 FX
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" .
Removal and Installation (VQ35DE Models)AGS000HI
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.
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)

POWER STEERING OIL PUMP PS-33
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Revision: 2005 July 2005 FX
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)AGS000HJ
REMOVAL
1. Remove undercover from vehicle with power tool.
2. Remove power steering oil pump belt from auto tensioner. Refer to EM-173, "
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.
Disassembly and Assembly (VQ35DE Models)AGS000HE
INSPECTION BEFORE DISASSEMBLY
Disassemble power steering oil pump only if the following items are found.

Oil leakage from oil pump

Deformed or damaged pulley
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
SGIA0622E

HYDRAULIC LINE PS-41
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Revision: 2005 July 2005 FX
HYDRAULIC LINEPFP:49721
ComponentsAGS000H5
VQ35DE 2WD MODEL
SGIA0559E
1. Reservoir tank 2. Reservoir tank bracket 3. Suction hose
4. High pressure hose 5. Oil pump 6. Steering gear assembly

PS-42
HYDRAULIC LINE
Revision: 2005 July 2005 FX
VQ35DE AWD MODEL
7. Oil cooler 8. Eye bolt 9. Copper washer
10. Oil pressure sensor
SGIA0560E
1. Reservoir tank 2. Reservoir tank bracket 3. Suction hose
4. High pressure hose 5. Oil pump 6. Steering gear assembly
7. Oil cooler 8. Eye bolt 9. Copper washer
10. Oil pressure sensor

PS-44
HYDRAULIC LINE
Revision: 2005 July 2005 FX
ComponentAGS000HF
VK45DE AWD MODEL
SGIA0727E
1. Reservoir tank 2. Suction hose 3. High pressure hose
4. Oil cooler 5. Steering gear assembly 6. Reservoir tank bracket
7. Eye bolt

SERVICE DATA AND SPECIFICATIONS (SDS) PS-47
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Revision: 2005 July 2005 FX
Steering GearAGS000HB
Oil PumpAGS000HC
Steering FluidAGS000HD
Tie-rod length “L” 135.2 mm (5.32 in)
SGIA0167E
Steering gear modelPR26AM
Rack neutral position, dimension “L” (rack stroke) 67.0 mm (2.64 in)
Rack sliding force At the neutral point:
Range within ± 11.5 mm
( ± 0.453 in) from the neutral
position
(in power ON) Area average value 147
− 211 N (15 − 21.5 kg, 33 − 47 lb)
Allowable variation 98 N (10 kg, 22 lb) or less
Whole area (in power OFF) Peak value 294 N (30 kg, 66 lb) or less
Allowable variation 147 N (15 kg, 33 lb) or less
SGIA0629J
Oil pump relief hydraulic pressure 9,900 − 10,700 kPa (101 − 109.1 kg/cm2 , 1436 − 1552 psi)
Fluid capacity
Approx. 1.0 (1-1/8 US qt, 7/8 Imp qt)