air bleeding NISSAN NAVARA 2005 Repair Owner's Guide

PS-6
POWER STEERING FLUID
POWER STEERING FLUID
PFP:KLF20
Checking Fluid LevelEGS001LD
lCheck fluid level with engine stopped.
lMake sure that fluid level is between MIN and MAX.
lFluid levels at HOT and COLD are different. Do not confuse
them.
CAUTION:
lThe fluid level should not exceed the MAX line. Excessive
fluid will cause fluid leakage from the cap.
lDo not reuse drained power steering fluid.
lRecommended fluid is Type DEXRONTMIII or equivalent.
Checking Fluid LeakageEGS001LE
Check hydraulic connections for fluid leakage, cracks, damage,
looseness, or wear.
1. Run engine until the fluid temperature reaches 50 to 80°C(122
to 176°F) in reservoir tank, and keep engine speed idle.
2. Turn steering wheel several times from full left stop to full right
stop.
3. Hold steering wheel at each lock position for five seconds and
carefully, check for fluid leakage.
CAUTION:
Do not hold the 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 from oil pump is noticed, check oil pump. Refer toPS-25, "
POWER STEERING OIL
PUMP".
6. Check steering gear boots for accumulation of fluid, indicating from steering gear.
Air Bleeding Hydraulic SystemEGS001LF
If air bleeding is not complete, the following symptoms can be observed.
lBubbles are created in reservoir tank.
lClicking noise can be heard from oil pump.
lExcessive buzzing in the oil pump
NOTE:
Fluid noise may occur in the steering gear or oil pump. This does not affect performance or durability of
the system.
1. Turn steering wheel several times from full left to full right stop with engine off.
CAUTION:
Turn steering wheel while filling reservoir tank with fluid so as not to lower fluid level below the
MIN line.
2. Start engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leakage.
3. Repeat step 2 above several times at approximately 3 second intervals.
CAUTION:
Do not hold the steering wheel in a locked position for more than 10 seconds. (There is the possi-
bility that oil pump may be damaged.)
4. Check fluid for bubbles and while contamination.HOT : Fluid temperature 50 - 80°C (122 - 176°F)
COLD : Fluid temperature 0 - 30°C(32-86°F)
SGIA0232J
SGIA0506E

POWER STEERING GEAR AND LINKAGE
PS-15
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PS
7. Remove high and low pressure piping of hydraulic piping, and
then drain power steering fluid. Refer toPS-6, "
POWER
STEERING FLUID".
8. Remove steering hydraulic piping bracket from front suspension
member. Refer toPS-30, "
HYDRAULIC LINE".
9. Remove mounting bolts and nuts of steering gear assembly, and
then remove steering gear assembly, rack mounting bracket,
rack mounting insulator and washer from vehicle.
INSTALLATION
lInstallation is the reverse order of removal. For tightening torque, refer toPS-14, "COMPONENT".
lWhen installing lower shaft to steering gear assembly, follow the procedure listed below.
–Set rack of steering gear in the neutral position.
NOTE:
To get the neutral position of rack, turn pinion assembly and measure the distance of inner socket, and
then measure the intermediate position of the distance.
–Align rear cover cap projection (A) with the marking position (B)
of gear housing assembly.
–Install slit part of lower shaft (C) aligning with the projection (A)
of rear cover cap (1). Make sure that the slit part of lower shaft
(C) is aligned with both the projection (A) of rear cover cap (1)
and the marking position (B) of gear housing assembly.
lAfter installation, bleed air from the steering hydraulic system.
Refer toPS-6, "
Air Bleeding Hydraulic System".
lPerform final tightening of nuts and bolts on each part under
unladen conditions with tyres on level ground when removing
steering gear assembly. Check wheel alignment. Refer toFSU-
7, "Front Wheel Alignment".
INSPECTION AFTER INSTALLATION
Make sure that steering wheel operates smoothly by turning several times from full left stop to full right stop.
LGIA0032E
SGIA1140E

POWER STEERING OIL PUMP
PS-25
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PS
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceEGS001LL
CHECKING RELIEF OIL PRESSURE
CAUTION:
Make sure that belt tension is normal before starting the following procedure.
1. Connect the hydraulic pressure gauge [SST] between oil pump
discharge connector and high-pressure hose. Bleed air from the
hydraulic circuit while opening valve fully. Refer toPS-6, "
Air
Bleeding Hydraulic System".
2. Start engine. Run engine until oil temperature reaches 50 to
80°C(122to176°F).
CAUTION:
lLeave the valve of the hydraulic pressure gauge [SST]
fully open while starting and running engine. If engine is
started with the valve closed, the hydraulic pressure in
oil pump goes up to the relief pressure along with
unusual increase of oil temperature.
lBe sure to keep hose clear or belts and other parts when
engineisstarted.
3. Fully close the hydraulic pressure gauge [SST] valve with
engine at idle and measure the relief oil pressure.
CAUTION:
Never keep valve closed for 10 seconds or longer.
4. Open the valve slowly after measuring. Repair oil pump is the
relief oil pressure is outside the standard. Refer toPS-26, "
Dis-
assembly and Assembly".
5. After inspection, disconnect the hydraulic pressure gauge [SST] from hydraulic circuit, then add fluid and
bleed air. Refer toPS-6, "
Air Bleeding Hydraulic System".
Removal and InstallationEGS001LM
REMOVAL
1. Drain power steering fluid from reservoir tank.
2. Remove radiator shroud. Refer toCO-11, "
Components".
3. Loosen drive belt. Refer toEM-12, "
DRIVE BELTS".
4. Remove drive belt from oil pump pulley.
5. Disconnect the pressure sensor electrical connector.
6. Remove piping of high pressure and low pressure (drain fluid from their pipings). Refer toPS-30,
"HYDRAULIC LINE".
7. Remove oil pump mounting bolts, and then remove power steering pump. Refer toPS-30, "
HYDRAULIC
LINE". Relief oil pressure:
8,500 - 9,300 kpa (86.7 - 94.9 kg/cm
2, 1,233 - 1,349 psi)
SGIA1225E

PS-26
POWER STEERING OIL PUMP
INSTALLATION
Installation is the reverse order of removal. For tightening torque, refer toPS-30, "HYDRAULIC LINE".
lPerform the following procedure after installing.
–Adjust belt tension. Refer toEM-12, "DRIVE BELTS".
–Bleed air. Refer toPS-6, "Air Bleeding Hydraulic System".
Disassembly and AssemblyEGS001LN
COMPONENT
INSPECTION BEFORE DISASSEMBLY
Disassemble oil pump only when the following malfunctions occur.
lIf oil leakage is found on oil pump.
lOil pump pulley is damaged or deformed.
lPerformance of oil pump is low.
1. Pulley 2. Front bracket 3. Snap ring
4. Oil seal 5. Drive shaft 6. Body assembly
7. Suction pipe 8. O-ring A 9. Spring
10. Flow control valve 11. Copper washer 12. Joint
13. O-ring B 14. Side plate 15. Rotor
16. Cartridge 17. Vane 18. Cam ring
19. Dowel pin 20. Gasket 21. Rear cover
22. Rear bracket
Referr toGI-10, "
Components"and the followings for the symbols in the figure.
:
Apply Type DEXRON
TMIII or equivalent.
:Apply multi-purpose grease.
SGIA1318E

RFD-14
[WITH LIMITED SLIP DIFFERENTIAL]
REAR FINAL DRIVE ASSEMBLY
REAR FINAL DRIVE ASSEMBLY
PFP:38300
Removal and InstallationEDS00398
REMOVAL
1. Remove the rear propeller shaft. Refer toPR-8, "Removal and Installation".
lPlug rear end of transmission or transfer.
2. Remove the axle shafts and back plate and torque members. Refer toRAX-7, "
Removal and Installation".
3. Disconnect the following components from the rear final drive.
lABS sensor wire harness
lRear cable (LH) and rear cable (RH)
lBrake hoses and brake tube
CAUTION:
Position the wire harness, cable and hoses away from the final drive assembly. Failure to do so
may result in components being damaged during rear axle assembly removal.
4. Support the rear final drive using a suitable jack.
5. Remove rear shock absorber lower bolts. Refer toRSU-6, "
Removal and Installation".
6. Remove leaf spring U-bolt nuts. Refer toRSU-7, "
Removal and Installation".
WARNING:
Support the rear final drive assembly using suitable jack before removing leaf spring U-bolt nuts.
7. Remove rear final drive assembly using suitable jack.
INSTALLATION
Installation is the reverse order of removal.
lWhen oil leaks while removing rear final drive assembly, check oil level after the installation. Refer to
RFD-9, "
Checking Differential Gear Oil".
lRefill brake fluid and bleed the air from the brake system. Refer toBR-11, "Bleeding Brake System".

REAR FINAL DRIVE ASSEMBLY
RFD-81
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
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RFD
REAR FINAL DRIVE ASSEMBLYPFP:38300
Removal and InstallationEDS003BF
REMOVAL
1. Remove the rear propeller shaft. Refer toPR-8, "Removal and Installation".
lPlug rear end of transmission or transfer.
2. Remove the axle shafts and back plate and torque members. Refer toRAX-7, "
Removal and Installation".
3. Disconnect the following components from the rear final drive.
lABS sensor wire harness
lRear cable (LH) and rear cable (RH)
lBrake hoses and brake tube
lDifferential lock position switch harness connector
lDifferential lock solenoid harness connector
CAUTION:
Position the wire harness, cable and hoses away from the final drive assembly. Failure to do so
may result in components being damaged during rear axle assembly removal.
4. Support the rear final drive using a suitable jack.
5. Remove rear shock absorber lower bolts. Refer toRSU-6, "
Removal and Installation".
6. Remove leaf spring U-bolt nuts. Refer toRSU-7, "
Removal and Installation".
WARNING:
Support the rear final drive assembly using suitable jack before removing leaf spring U-bolt nuts.
7. Remove rear final drive assembly using suitable jack.
INSTALLATION
Installation is the reverse order of removal.
lWhen oil leaks while removing rear final drive assembly, check oil level after the installation. Refer to
RFD-40, "
Checking Differential Gear Oil".
lRefill brake fluid and bleed the air from the brake system. Refer toBR-11, "Bleeding Brake System".
lAfter the installation, check DIFF LOCK indicator lamp. Refer toRFD-33, "Precautions for Differential
Case Assembly and Differential Lock Control Unit Replacement".