Nissan Pathfinder (2012 year). Manual — part 565
ST-12
< PERIODIC MAINTENANCE >
POWER STEERING FLUID
PERIODIC MAINTENANCE
POWER STEERING FLUID
Checking Fluid Level
INFOID:0000000007356578
Check fluid level, referring to the scale on the reservoir tank.
Use HOT range for fluid temperatures of 50
°
– 80
°
C (122
°
– 176
°
F).
Use COLD range for fluid temperatures of 0
°
– 30
°
C (32
°
– 86
°
F).
CAUTION:
• Do not overfill.
• Do not reuse any power steering fluid.
• Recommended fluid is Genuine NISSAN PSF or equivalent.
Refer to
MA-18, "FOR USA AND CANADA : Fluids and Lubri-
(United States and Canada),
(Mexico).
Checking Fluid Leakage
INFOID:0000000007356579
Check the hydraulic piping lines for improper attachment, leaks,
cracks, damage, loose connections, chafing and deterioration.
1. Run the engine until the fluid temperature reaches 50
°
– 80
°
C
(122
°
– 176
°
F) in the reservoir tank. Keep engine speed idle.
CAUTION:
Do not allow steering fluid reservoir tank to go below the
MIN level line. Check tank frequently and add fluid as
needed.
2. Turn the steering wheel to the right and left several times.
3. Hold the steering wheel at each “locked” position for five sec-
onds to check for fluid leakage.
CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that the oil pump may be damaged.)
4. If fluid leakage at a connection is noticed, loosen the connection and then retighten. Do not over-tighten
connector as this can damage O-ring, washer and connector. Refer to
.
5. If fluid leakage from the oil pump is noticed, check the oil pump. Refer to
.
6. Check steering gear boots for accumulation of fluid, indicating a leak from the steering gear.
CAUTION:
Do not reuse copper sealing washers.
Air Bleeding Hydraulic System
INFOID:0000000007356580
Incomplete air bleeding causes the following:
• Air bubbles in reservoir tank
• Clicking noise in oil pump
• Excessive buzzing in oil pump
When this happens bleed the air again.
1. With the engine not started, turn steering wheel fully right to left several times. When fluid level is lowered,
refill reservoir. Repeat process until fluid level is stabilized.
2. Start the engine and turn the steering wheel fully to the right and left several times.
CAUTION:
Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and
add fluid as needed.
NOTE:
When the vehicle is stationary or while the steering wheel is being turned slowly, some noise may be
heard from the oil pump or gear. This noise is normal and does not affect any system.
3. Run the engine at idle speed. Hold the steering wheel at each "locked" position for three seconds.
CAUTION:
LGIA0021E
SGIA0506E
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2012 Pathfinder
POWER STEERING FLUID
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Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that oil pump may be damaged.)
4. Repeat step 3 several times at about three second intervals.
5. Check for air bubbles, cloudy fluid and fluid leakage.
6. If air bubbles or cloudiness exists, perform steps 3 and 4 again until air bubbles and cloudiness do not
exist.
7. Stop the engine and check fluid level.
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ST-14
< PERIODIC MAINTENANCE >
STEERING WHEEL
STEERING WHEEL
On-Vehicle Inspection and Service
INFOID:0000000007356581
CHECKING CONDITION OF INSTALLATION
• Check the installation condition of the steering gear assembly, front suspension, axle and steering column.
• Check if movement exists when the steering wheel is pushed up and down, left and right and in the axial
direction.
• Check if the nuts for the steering gear assembly are loose. Refer to
ST-21, "Removal and Installation"
.
CHECKING STEERING WHEEL PLAY
1. Turn the tires straight ahead and start the engine. Lightly turn the steering wheel left and right to the point
where the tires start moving, and measure the distance that the outer circumference of the steering wheel
travels.
CHECKING NEUTRAL POSITION ON STEERING WHEEL
• Check the neutral position on the steering wheel after confirming the front wheel alignment is correct. Refer
FSU-7, "Front Wheel Alignment"
.
1. Turn the tires straight ahead, check if the steering wheel is in the neutral position.
2. If it is not in the neutral position, remove the steering wheel and reinstall it correctly on the steering stem,
within two teeth of the original position.
3. If the neutral position cannot be attained by repositioning the steering wheel within two teeth on the steer-
ing stem, loosen the tie-rod lock nuts of the steering outer sockets, then adjust the tie-rods by the same
amount in the opposite direction of the steering wheel.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring the power steering fluid up to adequate operating temperature. Make sure the fluid temperature is
approximately 50
°
– 80
°
C (122
°
– 176
°
F).
4. Tires need to be inflated to specified pressure. Refer to
5. Check steering wheel turning force using Tool when steering
wheel has been turned 360
°
from the neutral position.
6. If steering wheel turning force is out of specification, inspect the
following:
• Steering column. Refer to
ST-21, "Removal and Installation"
End play of the axle direction for steering wheel
Refer to
LGIA0024E
Steering wheel play on the outer circumference Refer to
Tool number
:
—
(J-44372)
Steering wheel
turning force
Refer to
WGIA0035E
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STEERING WHEEL
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• Power steering oil pump. Refer to
ST-16, "On-Vehicle Inspection and Service"
7. If steering column and power steering oil pump meet specifications, inspect steering gear and replace as
necessary. Refer to
ST-21, "Removal and Installation"
CHECKING FRONT WHEEL TURNING ANGLE
When checking the front wheel turning angle, refer to
FSU-25, "Wheel Alignment (Unladen*1)"
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ST-16
< PERIODIC MAINTENANCE >
POWER STEERING OIL PUMP
POWER STEERING OIL PUMP
On-Vehicle Inspection and Service
INFOID:0000000007356582
CHECKING RELIEF OIL PRESSURE
CAUTION:
Before starting work, confirm that the belt tension is within specification. Refer to
(VQ40DE),
EM-152, "Checking Drive Belts"
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 with the shut-off valve fully open. Refer
ST-12, "Air Bleeding Hydraulic System"
.
2. Start the engine. Run the engine until the power steering fluid temperature in reservoir tank 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 high pressure hose using new copper sealing washers. Add fluid
and bleed the air from the hydraulic circuit thoroughly. Refer to
ST-12, "Air Bleeding Hydraulic System"
CAUTION:
Do not reuse copper sealing washers.
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
(
—
)
WGIA0129E
Relief oil pressure
: Refer to
.
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STEERING COLUMN
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REMOVAL AND INSTALLATION
STEERING COLUMN
Removal and Installation
INFOID:0000000007356584
CAUTION:
• Do not exert any axial load or impact to the steering column.
• Do not move the steering gear while the steering column assembly is removed.
• Any time the ignition switch has been removed and installed, the keys must be re-registered in the
BCM. Refer to CONSULT Immobilizer mode and follow the on-screen instructions.
REMOVAL
1. Remove the spiral cable with the combination switches attached from the steering column assembly.
SR-7, "Removal and Installation"
.
2. Remove the instrument lower panel LH. Refer to
IP-15, "Removal and Installation"
.
3. Disconnect the following:
• Ignition key lamp
• Immobilizer
• Ignition switch
4. Disconnect key interlock cable from steering column (if equipped). Refer to
.
1.
Driver air bag module
2.
Steering wheel center nut
3.
Steering wheel
4.
Combination switch and spiral cable 5.
Steering column assembly and igni-
tion switch
6.
Collar
7.
Hole cover seal
8.
Clamp
9.
Hole cover mounting plate
10. Hole cover
11. Upper joint
12. Upper shaft
13. Boot clamp
14. Lower joint shaft
15. Boot and clips (plastic)
AWGIA0198GB
2012 Pathfinder
ST-18
< REMOVAL AND INSTALLATION >
STEERING COLUMN
5. Remove the lock nut and bolt from the upper joint, then separate
the upper joint from the upper shaft.
CAUTION:
• Do not reuse the lock nut.
6. Remove the three nuts and bolt from the steering column
assembly, then remove the steering column assembly from the
steering member.
7. Remove the hole cover seal and clamp.
8. Remove the hole cover nuts, then remove the hole cover from
the dash panel.
9. Remove the bolt from the lower joint of the lower joint shaft, then
remove the lower joint shaft from the vehicle.
CAUTION:
• Do not damage the lower joint.
INSPECTION AFTER REMOVAL
• Check for damage to the steering column jacket tube. If damage is found, replace the steering column with a
new one.
CAUTION:
• Do not exert any axial load or impact to the steering column.
• Replace the column if it is depleted of grease, worn, damaged, or if any scratches or coating sepa-
ration is present on the shaft seal area.
• If the vehicle has been in a collision, or if noises are heard coming
from the steering column, check column length (L) as shown. If out
of specification, replace the steering column as an assembly.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
LGIA0027E
LGIA0028E
LGIA0029E
Steering column
length (L)
Refer to
.
AWGIA0147ZZ
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STEERING COLUMN
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When installing the steering column, finger-tighten all of the lower bracket and joint bolts; then tighten
them to specification. Do not apply undue stress to the steering column.
NOTE:
• With the wheels in the straight ahead position, align the slit of the
lower joint with the projection on the dust cover. Insert the joint until
surface (A) contacts surface (B).
• After installation, inspect the steering column for proper operation.
INSPECTION AFTER INSTALLATION
• Check the tilt device for proper tilt range.
• Check that the steering wheel turns smoothly to the left and right
locks.
• Check that the number of turns are the same from the straight-for-
ward position to the left and right locks.
• Check that the steering wheel is in the neutral position when driv-
ing straight ahead.
SST491C
Tilt range (A)
WGIA0083E
August 2012
2012 Pathfinder
2012 Pathfinder
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