NISSAN NAVARA 2005 Repair Workshop Manual

PS-24
POWER STEERING GEAR AND LINKAGE
22. Crimp the large-diameter boot clamp using suitable tool.
23. Install cylinder tubes to gear housing assembly.
24. Adjust inner socket to standard length “L”, and then tighten lock
nut to the specified torque. Refer toPS-16, "
COMPONENT".
Check length of inner socket “L” again after tightening lock nut.
Make sure that the length is the standard.
CAUTION:
Adjust toe-in after this procedure. Length achieved after
toe-in adjustment is not necessary the above value.
RAC1133D
Inner socket length “L” : 79 mm (3.11 in)
SGIA0167E

POWER STEERING OIL PUMP
PS-25
C
D
E
F
H
I
J
K
L
MA
B
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

POWER STEERING OIL PUMP
PS-27
C
D
E
F
H
I
J
K
L
MA
B
PS
DISASSEMBLY
NOTE:
Secure oil pump in a vise if necessary.
CAUTION:
Use copper plates when securing in a vise.
1. Remove rear bracket mounting bolts, and then remove rear bracket from rear cover.
2. Remove rear cover mounting bolts, and then remove rear cover from body assembly.
3. Remove gasket from body assembly.
4. Remove dowel pin, cartridge and side plate from body assembly.
5. Remove pulley mounting nut and washer, then remove pulley from drive shaft.
6. Remove snap ring from drive shaft and press out it.
CAUTION:
When removing snap ring, be careful not to damage drive
shaft.
7. Remove oil seal from body assembly using flat-bladed screw
driver.
8. Remove O-ring B from body assembly.
9. Remove eye bolt, and then remove joint and copper washer,
then pull out flow control valve and spring from body assembly.
10. Remove fixing bolts of suction pipe, and then remove suction
pipe from body assembly.
11. Remove O-ring A from body assembly.
12. Remove mounting bolts of front bracket, and then remove front
bracket from body assembly.
INSPECTION AFTER DISASSEMBLY
Body Assembly and Rear Cover Inspection
Check body assembly and rear cover for internal damage. Replace rear cover if it is damaged. Replace oil
pump assembly if body assembly is damaged.
Cartridge Assembly Inspection
Check cam ring, rotor and vane for damage. Replace cartridge assembly if there are.
Side Plate Inspection
Check side plate for damage. Replace side plate if there are.
SST010B
SST034A
SGIA0524E

PS-28
POWER STEERING OIL PUMP
Flow Control Valve Inspection
Check flow control valve and spring for damage. Replace if there are.
ASSEMBLY
NOTE:
Secureoilpumpinaviseifnecessary.
CAUTION:
Use copper plates when securing in a vise.
1. Apply recommended grease to oil seal lips (1). Apply recom-
mended fluid to around oil seal, and then install oil seal to body
assembly.
2. Apply recommended fluid to drive shaft, and press drive shaft
into body assembly, then install snap ring.
3. Apply recommended fluid to O-ring B, and install O-ring B into
body assembly.
4. Install side plate to body assembly.
5. Install dowel pin (3) into dowel pin hole (A), and install cam ring
(2) pointing it's D
1side toward the body assembly (1) side as
showninthefigure.
lWhen installing cam ring, turn carved face with a letter E (B)
of it to rear cover.
CAUTION:
Do not confuse the assembling direction of cam ring. If
cam ring is installed facing the incorrect direction, it may
cause oil pump operation malfunction.
6. Install rotor to body assembly.
SGIA1150E
SGIA0422E
SGIA1166E

POWER STEERING OIL PUMP
PS-29
C
D
E
F
H
I
J
K
L
MA
B
PS
lWhen installing rotor, turn mark face on rotor to body assem-
bly.
7. Install vane to rotor so that arc of vane faces cam ring side.
8. Check if drive shaft turns smoothly.
9. Install gasket to body assembly.
10. Install rear cover to body assembly, and then tighten mounting
bolts to the specified torque.
11. Install rear bracket to body assembly, and tighten the mounting
bolts to the specified torque.
12. Install front bracket to body assembly, and tighten the mounting
bolts to the specified torque.
13. Install pulley and washer to drive shaft, and then tighten lock nut
at the specified torque.
14. Install spring, flow control valve, copper washer, joint and eye-
bolt to body assembly. Then tighten eye-bolt to the specified
torque.
15. Apply recommended fluid to O-ring A, and then install O-ring A to body assembly.
16. Install suction pipe to body assembly.
SGIA0874E
SGIA0613E
SGIA0425E

PS-30
HYDRAULIC LINE
HYDRAULIC LINE
PFP:49721
Component (RHD Models)EGS001LO
CAUTION:
Securely insert harness connector to pressure sensor.
1. Reservoir tank 2. Reservoir tank bracket 3. Suction hose
4. High pressure hose 5. Oil pump assembly 6. Steering gear assembly
SGIA1319E

HYDRAULIC LINE
PS-31
C
D
E
F
H
I
J
K
L
MA
B
PS
7. Eye-bolt 8. Pressure sensor 9. Copper washer
10. Eye-joint (assembled to
high pressure side hose)11. O-ring 12. Low pressure piping
13. High pressure piping
Refer toGI-9, "
HOW TO USE THIS MANUAL"and the followings for the symbols in the figure.
:
Apply Type DEXRON
TMIII or equivalent.

PS-32
HYDRAULIC LINE
Component (LHD Models)
EGS001LP
CAUTION:
Securely insert harness connector to pressure sensor.
1. Reservoir tank 2. Reservoir tank bracket 3. Suction hose
4. High pressure hose 5. Oil pump assembly 6. Steering gear assembly
7. Eye-bolt 8. Pressure sensor 9. Copper washer
SGIA1320E

HYDRAULIC LINE
PS-33
C
D
E
F
H
I
J
K
L
MA
B
PS
Removal and InstallationEGS001LQ
lInsert hose securely until it contacts tube spool.
CAUTION:
Do not apply fluid.
lInstall eye-bolt with eye-joint (assembled to high-pressure hose)
protrusion facing with pump side cutout, and then tighten it to
the specified torque after tightening by hand.
10. Eye-joint (assembled to
high pressure side hose)11. O-ring 12. Low pressure piping
13. High pressure piping
Refer toGI-9, "
HOW TO USE THIS MANUAL"and the followings for the symbols in the figure.
:
Apply Type DEXRON
TMIII or equivalent.
SGIA0514E
SGIA0515E