Page 4305 of 4731
PS-30
POWER STEERING GEAR AND LINKAGE
Revision: 2005 July 2005 FX
24. Tighten lightly inner socket in specified length “L”, then tighten
lock nut at specified torque. Refer to PS-22, "
Disassembly and
Assembly" . Reconfirm if inner socket length is within limit of
specified length “L”.
CAUTION:
Perform toe-in adjustment after this procedure. Length
achieved after toe-in adjustment is not necessary value
given here. Inner socket length “L” : 135.2 mm (5.32 in)
SGIA0167E
Page 4306 of 4731

POWER STEERING OIL PUMP PS-31
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D E
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H I
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M A
B
PS
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
Page 4307 of 4731

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)
Page 4308 of 4731

POWER STEERING OIL PUMP PS-33
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K L
M A
B
PS
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
Page 4309 of 4731

PS-34
POWER STEERING OIL PUMP
Revision: 2005 July 2005 FX
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.
5. Remove cam ring, rotor, vane, front side plate, flow control valve A, spring, flow control valve B assembly and O-ring from body
assembly.
CAUTION:
Be careful not to drop and deform flow control valve A and
flow control valve B assembly.
6. Remove suction pipe from body assembly.
7. Remove O-ring from suction pipe.
8. Remove bracket from body assembly.
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 assembly
with new one.
ASSEMBLY
NOTE:
Fix oil pump in vise as occasion demands.
CAUTION:
When retaining drive shaft in a vise, always use copper or aluminum plates between vise and shaft.
1. Apply Genuine Nissan PSF or equivalent to oil seal lip and to the circumference of oil seal. Using a drift (SST), install oil seal to
body assembly.
NOTE:
Do not reuse oil seal.
2. If dowel pin has been removed, insert it into body assembly by hand. If it cannot be inserted by hand, lightly tap with a hammer.
SGIA0059E
SGIA0526E
SGIA0527E
Page 4310 of 4731
POWER STEERING OIL PUMP PS-35
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M A
B
PS
Revision: 2005 July 2005 FX
3. Install flow control valve A, flow control valve spring and flow
control valve B assembly to locations shown in the figure.
4. Match dowel pin A on flow control valve A, shown in the figure, with cutout B of front side plate and then install front side plate to
body assembly.
5. Install cam ring onto front side plate with smaller slit of cam ring facing body assembly.
6. Install pulley to body assembly.
CAUTION:
When installing pulley, be careful not to scratch oil seal.
7. Face the side of rotor with punch mark towards rear cover, and attach rotor to pulley shaft.
SGIA0526E
SGIA0528E
SGIA0623E
SGIA0529E
Page 4311 of 4731

PS-36
POWER STEERING OIL PUMP
Revision: 2005 July 2005 FX
8. Install vane to rotor with facing the round portion outside.
9. Using a hammer and a 10 mm (0.39 in) box, install rotor snap
ring to slot in pulley shaft.
NOTE:
Do not reuse snap ring.
CAUTION:
Be careful not to damage rotor and pulley shaft.
10. Match dowel pin A on flow control valve A, shown in the figure, with cutout B of rear side plate and install rear side plate to car-
tridge.
11. Apply Genuine Nissan PSF or equivalent to O-ring and install O- ring into rear side plate.
NOTE:
Do not reuse O-ring.
12. Apply Genuine Nissan PSF or equivalent to Teflon ring and Install Teflon ring into rear side plate.
NOTE:
Do not reuse Teflon ring.
13. Position rear cover on body assembly and tighten mounting bolts to specified torque.
14. Apply Genuine Nissan PSF or equivalent to O-ring and install O-ring into suction pipe. NOTE:
Do not reuse O-ring.
15. Install suction pipe into body assembly.
16. Install bracket to body assembly and tighten mounting bolts to specified torque.
SST843A
SGIA0063E
SGIA0530E
Page 4312 of 4731

POWER STEERING OIL PUMP PS-37
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PS
Revision: 2005 July 2005 FX
Disassembly and Assembly (VK45DE Models)AGS000H4
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 three bracket bolts and remove bracket from rear cover.
2. Unscrew four rear cover bolts and remove rear cover from body assembly.
3. Remove gasket from body assembly.
4. Remove lock pin, cartridge and side plate from body assembly.
5. Remove pulley from drive shaft assembly.
1. Bracket 2. Rear cover 3. Gasket
4. Lock pin 5. Cam ring 6. Rotor
7. Vane 8. Cartridge 9. Side plate
10. O-ring 11. Body assembly 12. Oil seal
13. Drive shaft assembly 14. Snap ring 15. Pulley
16. Spring washer 17. Spring 18. Flow control valve
19. O-ring 20. Connector bolt 21. Joint
22. Washer 23. Suction pipe 24. O-ring
SGIA0523E