Nissan Pathfinder (2005 year). Instruction — part 381
POWER STEERING GEAR AND LINKAGE
PS-19
C
D
E
F
H
I
J
K
L
M
A
B
PS
2005 Pathfinder
2.
Install the large-diameter side of the boots to the gear housing
assembly.
3.
Install the small-diameter side of the boots to the groove of the
inner sockets.
4.
Install the boot clamps to the boots, as shown.
CAUTION:
Do not reuse the large-diameter boot clamps.
5.
Crimp the large-diameter boot clamps, using Tool.
6.
Install the cylinder tubes to the gear housing assembly.
7.
Install the lock nuts and outer sockets to the inner sockets.
8.
Thread the outer sockets onto the inner sockets to the specified
length "L", then tighten the lock nuts to the specified torque.
Refer to
PS-17, "Disassembly and Assembly"
. Reconfirm that
the tie-rod length "L" is within specification.
SGIA0550E
AST139
Tool number
: KV40107300 (
—
)
RAC1133D
Maximum inner socket
length "L"
: 84.0 mm (3.31 in)
SGIA0167E
PS-20
POWER STEERING OIL PUMP
2005 Pathfinder
POWER STEERING OIL PUMP
PFP:49110
On-Vehicle Inspection and Service
EGS000SI
CHECKING RELIEF OIL PRESSURE
CAUTION:
Before starting work, confirm that the belt tension is within specification. Refer to
.
1.
Connect the Tool between the power steering oil pump dis-
charge connector and the high pressure hose, then bleed the air
from the hydraulic circuit. Refer to
.
2.
Start the engine. Run the engine until the power steering fluid temperature reaches 50 – 80
°
C (122 –
176
°
F).
CAUTION:
●
Warm up the engine with the shut-off valve fully opened. If the engine is started with the shut-off
valve closed, fluid pressure in the power steering oil pump increases to maximum pressure.
This will raise fluid temperature excessively.
●
Do not contact the belt with the hose while the engine is running.
3.
With the engine at idle, close the shut-off valve and read the relief oil pressure.
CAUTION:
Do not close the shut-off valve of the pressure gauge for more than 10 seconds.
4.
After measurement, open the shut-off valve slowly.
●
If relief oil pressure is outside the specification, replace the power steering oil pump. Refer to
.
5.
After inspection, disconnect the oil pressure gauge and oil pressure gauge adapter from the hydraulic cir-
cuit, then connect the power steering oil pump discharge connector. Add fluid and bleed the air from the
hydraulic circuit thoroughly. Refer to
PS-6, "Air Bleeding Hydraulic System"
.
Removal and Installation
EGS000SJ
REMOVAL
1.
Drain the power steering fluid from the reservoir tank.
2.
Remove the engine room cover. Refer to
EM-12, "Removal and Installation"
.
3.
Remove the air duct assembly. Refer to
EM-15, "Removal and Installation"
.
4.
Remove the serpentine drive belt from the auto tensioner and power steering oil pump. Refer to
.
5.
Disconnect the pressure sensor electrical connector.
6.
Remove the high pressure and low pressure piping from the power steering oil pump. Refer to
.
7.
Remove the power steering oil pump bolts, then remove the power steering pump.
INSTALLATION
Installation is in the reverse order of removal. Refer to
for tightening torque.
Tool number:
Pressure gauge and shut-off valve
KV48103500
(J-26357 and J-26357-10)
Oil pump side
Connector A and
O-ring
KV48105300-4 and 5295262U10
(
—
)
Eye-bolt and O-ring
KV48105300-3 and 5295262U00
(
—
)
High pressure pip-
ing side
Connector B and
O-ring
KV48105300-1 and 5295262U00
(
—
)
Nut
KV48105300-2
(
—
)
Relief oil pressure
: 8.0 – 8.8 mPa (81.60 – 89.76 kg/cm
2
, 1160.0 – 1276.0 psi)
WGIA0129E
POWER STEERING OIL PUMP
PS-21
C
D
E
F
H
I
J
K
L
M
A
B
PS
2005 Pathfinder
●
After installation, bleed the air from the hydraulic circuit thoroughly. Refer to
.
NOTE:
Belt tension is automatic and requires no adjustment.
Disassembly and Assembly
EGS000SK
INSPECTION BEFORE DISASSEMBLY
Disassemble the power steering oil pump only if the following items are found.
●
Deformed or damaged pulley, bracket, connector or suction pipe
●
Oil leakage from the suction pipe or connector.
DISASSEMBLY
NOTE:
Mount the power steering oil pump in a vise as needed.
1.
Remove the connector bolt, connector and copper washers.
CAUTION:
Do not reuse the copper washers.
2.
Remove the suction pipe and O-ring.
CAUTION:
Do not reuse the O-ring.
3.
Remove the pulley nut and pulley.
4.
Remove the bracket bolts and bracket.
1.
Connector
2.
Suction pipe
3.
O-ring
4.
Bracket
5.
Pulley
6.
Lock washer
7.
Body assembly
8.
Copper washers
LGIA0036E
PS-22
POWER STEERING OIL PUMP
2005 Pathfinder
INSPECTION AFTER DISASSEMBLY
Body Assembly Inspection
Check the power steering oil pump body assembly for damage. If any damage is found, replace with a new
power steering oil pump assembly.
ASSEMBLY
Assembly is in the reverse order of disassembly.
CAUTION:
●
Do not reuse the copper gaskets
●
Do not reuse the O-ring. Apply a coat of Genuine Nissan PSF or equivalent to the O-ring.
HYDRAULIC LINE
PS-23
C
D
E
F
H
I
J
K
L
M
A
B
PS
2005 Pathfinder
HYDRAULIC LINE
PFP:49721
Removal and Installation
EGS000SL
Refer to the following illustration for hydraulic line removal and installation.
1.
Reservoir tank
2.
Suction hose
3.
High pressure hose
4.
Oil cooler
5.
Steering gear assembly
6.
Reservoir tank
LGIA0035E
PS-24
HYDRAULIC LINE
2005 Pathfinder
7.
Reservoir tank bracket
8.
Return hose
9.
Hose clamps
10. Suction hose
11.
Connector bolts
12. Copper washers
SERVICE DATA AND SPECIFICATIONS (SDS)
PS-25
C
D
E
F
H
I
J
K
L
M
A
B
PS
2005 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
Steering Wheel
EGS000SM
Steering Column
EGS000SN
Steering Outer Socket and Inner Socket
EGS000SO
End play of the axle direction for steering wheel
0 mm (0 in)
Steering wheel turning force
39 N (4 kg-f, 9 lb-f) or less
Steering wheel play on the outer circumference
0
−
35 mm (0
−
1.38 in)
Steering column length “L1”
165.1 mm (6.500 in)
Steering column length “L2”
258.0 mm (10.16 in)
Tilt range "A"
73.8 mm (2.906 in)
SGIA0475E
WGIA0083E
Steering gear type
PR26AM
Tie-rod ball joint outer socket
Swinging torque
0.3
−
2.9 N·m (0.03
−
0.29 kg-m, 3
−
25 in-lb)
Measurement on spring balance
●
Measuring point: cotter pin hole of stud
4.84
−
46.7 N (0.50
−
4.7 kg, 4
−
34 lb)
Rotating torque
0.3
−
2.9 N·m (0.03
−
0.29 kg-m, 3
−
25 in-lb)
Axial end play
0.5 mm (0.020 in) or less
SGIA0358E
PS-26
SERVICE DATA AND SPECIFICATIONS (SDS)
2005 Pathfinder
Steering Gear
EGS000SP
Oil Pump
EGS000SQ
Steering Fluid
EGS000SR
Tie-rod ball joint inner socket
Swinging torque
1.0
−
7.8 N·m (0.11
−
0.79 kg-m, 9
−
69 in-lb)
Measurement on spring balance
●
Measuring point: L mark see below,
L=83.2 mm (3.276 in).
12.1
−
93.7 N (1.3
−
9.5 kg, 9
−
69 lb)
Axial end play
0.2 mm (0.08 in) or less
Tie-rod maximum length “L”
84.0 mm (3.31 in)
Steering gear type
PR26AM
SGIA0167E
Steering gear model
PR26AM
Rack neutral position, dimension “L” (rack stroke)
85.5 mm (3.36 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 (14.99
−
21.52 kg, 33.1
−
47.52 lb)
Allowable variation
98 N (10 kg, 22 lb) or less
Whole area (in power OFF)
Peak value
294 N (30.0 kg, 66 lb) or less
Allowable variation
147 N (16 kg, 35 lb) or less
STC0034D
Oil pump relief hydraulic pressure
8.0
−
8.8 mPa (81.60
−
89.76 kg/cm
2
, 1160.0
−
1276.0 psi)
Fluid capacity
Approx. 1.0
(2 1/8 US pt, 1 3/4 Imp pt)
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