air bleeding NISSAN 350Z 2007 Z33 Power Steering System Workshop Manual

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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SECTION PS
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Revision: 2006 November2007 350Z
POWER STEERING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Battery Service ................................ 2
Precautions for Steering System .............................. 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 4
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
POWER STEERING FLUID ........................................ 6
Checking Fluid Level ................................................ 6
Checking Fluid Leakage ........................................... 6
Air Bleeding Hydraulic System ................................. 6
STEERING WHEEL .................................................... 7
On-Vehicle Inspection and Service .......................... 7
CHECKING CONDITION OF INSTALLATION ...... 7
CHECKING STEERING WHEEL PLAY ................ 7
CHECKING NEUTRAL POSITION ON STEER-
ING WHEEL .......................................................... 7
CHECKING STEERING WHEEL TURNING
FORCE .................................................................. 7
CHECKING FRONT WHEEL TURNING ANGLE ..... 8
Removal and Installation .......................................... 9
REMOVAL ............................................................. 9
INSTALLATION ..................................................... 9
STEERING COLUMN ............................................... 10
Removal and Installation ........................................ 10
COMPONENTS .................................................. 10
REMOVAL ........................................................... 10
INSPECTION AFTER REMOVAL ....................... 13
INSTALLATION ................................................... 13INSPECTION AFTER INSTALLATION ................ 14
Disassembly and Assembly .................................... 15
COMPONENTS ................................................... 15
DISASSEMBLY ................................................... 15
INSPECTION AFTER DISASSEMBLY ................ 16
ASSEMBLY ......................................................... 16
POWER STEERING GEAR AND LINKAGE ............ 17
Removal and Installation ........................................ 17
COMPONENTS ................................................... 17
REMOVAL ........................................................... 17
INSTALLATION ................................................... 18
POWER STEERING GEAR ...................................... 19
Disassembly and Assembly .................................... 19
COMPONENTS ................................................... 19
DISASSEMBLY ................................................... 20
INSPECTION AFTER DISASSEMBLY ................ 21
ASSEMBLY ......................................................... 22
POWER STEERING OIL PUMP ............................... 28
On-Vehicle Inspection and Service ......................... 28
CHECKING RELIEF OIL PRESSURE ................ 28
Removal and Installation ........................................ 28
REMOVAL ........................................................... 28
INSTALLATION ................................................... 29
Disassembly and Assembly .................................... 29
COMPONENTS ................................................... 29
INSPECTION BEFORE DISASSEMBLY ............. 30
DISASSEMBLY ................................................... 30
INSPECTION AFTER DISASSEMBLY ................ 30
ASSEMBLY ......................................................... 31
HYDRAULIC LINE .................................................... 33
Removal and Installation ........................................ 33
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 35
Steering Wheel ....................................................... 35
Steering Angle ........................................................ 35
Steering Column ..................................................... 35
Steering Outer Socket and Inner Socket ................ 35
Steering Gear ......................................................... 36
Oil Pump ................................................................. 36
Steering Fluid .......................................................... 36

PS-6
POWER STEERING FLUID
Revision: 2006 November2007 350Z
POWER STEERING FLUIDPFP:KLF20
Checking Fluid LevelNGS00007

Stop engine before performing a fluid level check.

Ensure that fluid level is between the MAX range and MIN level.

Because fluid level differs within the HOT range and the COLD
range, check it carefully.
CAUTION:

Do not overfill the MAX level.

Do not reuse any used power steering fluid.
Checking Fluid LeakageNGS00008
Check that hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50 to 80° C (122 to
176°F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. 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.)
4. 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.
5. If fluid leakage at the connectors is noticed, then loosen the flare nut and retighten it.
6. Check steering gear boots for accumulation of fluid indicating a from steering gear.
Air Bleeding Hydraulic SystemNGS00009
Incomplete air bleeding causes the following. When this happens, bleed air again.

Generation of air bubbles in reservoir tank

Generation of clicking noise in oil pump

Excessive buzzing in oil pump
NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from
oil pump or gear. This noise is normal and does not affect any system.
1. Stop engine, and then turn steering wheel fully to right and left several times.
CAUTION:
Do not allow steering fluid reservoir tank to go below the low-level line. Check tank frequenter and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully to the right and then fully to the left, and keep for about
three seconds. Then check whether a fluid leakage has occurred.
3. Repeat the 2nd procedure several times at about three seconds intervals.
CAUTION:
Do not hold steering wheel in the locked position more than 10 seconds. (There is the possibility
that oil pump may be damaged.)
4. Check generation of air bubbles and cloud in fluid.
5. If air bubbles and the cloud don't fade, stop engine, hold air bleeding until air bubbles and the cloud fade.
Perform the 2nd and the 3rd procedures again.
6. Stop engine, check fluid level.HOT : Fluid temperatures from 50 to 80 °C (122 to
176°F)
COLD : Fluid temperatures from 0 to 30°C (32 to 86°F)
SGIA0232J
SST836C

PS-18
POWER STEERING GEAR AND LINKAGE
Revision: 2006 November2007 350Z
8. Loosen bolt on upper yoke of lower joint and remove bolt on
lower yoke of joint, then slide lower joint into lower shaft. Sepa-
rate steering gear assembly from lower shaft.
9. Tack bolt on upper yoke of lower joint, fix lower joint to lower
shaft.
10. Remove the fixing bolt and remove steering gear assembly, rack
mounting bracket and insulator from vehicle.
INSTALLATION

Refer to PS-17, "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" .

When steering wheel is set in the straight ahead direction, con-
firm slit of lower joint fits with the projection on rear cover cap,
furthermore marking position on steering gear assembly nearly
fits with the projection on rear cover cap.

After installation, bleed air from piping. Refer to PS-6, "Air
Bleeding Hydraulic System" .
SGIA0367E
SGIA0348E
SGIA1753E

PS-28
POWER STEERING OIL PUMP
Revision: 2006 November2007 350Z
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceNGS0000H
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 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-29, "Dis-
assembly and Assembly" .
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-6, "
Air Bleeding Hydraulic System" .
Removal and InstallationNGS0000I
REMOVAL
1. Remove engine cover.
2. Remove air cleaner box.
3. Drain water from radiator upper tank, then remove radiator upper hose.
4. Remove radiator fan shroud. Refer to CO-13, "
Removal and Installation" .
SGIA0814E
Relief oil pressure:
9,600 - 10,200 kPa (97.9 - 104 kg/cm
2 , 1,392 - 1,479 psi)
SGIA0813E

POWER STEERING OIL PUMP
PS-29
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PS
Revision: 2006 November2007 350Z
5. Loosen idler pulley, then remove belt.
6. Drain power steering fluid from reservoir tank.
7. Remove piping of high pressure and low pressure (drain fluid
from their pipings)
8. Remove bolt common to water pump and power steering pump.
9. Remove bolt then remove power steering pump.
INSTALLATION
Refer to PS-33, "HYDRAULIC LINE" for tightening torque. Install in the reverse order of removal.

After installation, adjust belt tension. Refer to EM-12, "DRIVE BELTS" .

After installation, bleed air. Refer to PS-6, "Air Bleeding Hydraulic System" .
Disassembly and AssemblyNGS0000J
COMPONENTS
SGIA0376E
1. Plug 2. O-ring D 3. Flow control valve spring
4. Relief valve assembly 5. Flow control valve assembly 6. Shaft kit
7. Oil seal 8. Bracket 9. Body assembly
10. Suction connector assembly 11. O-ring E 12. O-ring C
13. O-ring B 14. Cartridge assembly 15. O-ring A
16. Cover assembly 17. Side plate 18. Vane
19. Rotor snap ring 20. Cam ring 21. Rotor
22. Dowel pin
SGIA0774E