NGST0004
NVH Troubleshooting Chart
NGST0004S01
Reference page
ST-7
ST-8
ST-29
ST-29
ST-29
ST-8
ST-6
ST-8
MA-17,MA-26
—
ST-13
ST-13
ST-10
ST-27
PD-40, NVH
PD-40, NVH
AX-3, NVH
AX-3
SU-3, NVH
SU-3, NVH
SU-3, NVH
BR-5, NVH
SUSPECTED PARTS
(Possible cause)
Fluid level
Air in hydraulic system
Tie rod ball joint swinging force
Tie rod ball joint rotating torque
Tie rod ball joint end play
Steering gear fluid leakage
Steering wheel play
Steering gear turning force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
DRIVE SHAFT
AXLE
SUSPENSION
TIRES
ROAD WHEEL
BRAKES
Symptom
STEER-
ING
Noise XXXXXXXXX XXXXXXXX
Shake X X X XXXXXX
Vibration XXXX X XXXX
Shimmy X X X XXXXX
Judder X XXXXX
X: Applicable
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
ST-5
Steering System
NGST0005
AST232
SST489B
Checking Steering Wheel Play
NGST0006
¼ Place wheels in straight ahead position and check steering
wheel play.
Steering wheel play:
35 mm (1.38 in) or less
¼ If steering wheel play is not within specification, check the fol-
lowing for loose or worn components.
a) Steering column. Refer to ST-11.
b) Front suspension and axle. Refer to AX-3, “Front Axle Parts”
and SU-7, “Front Suspension Parts”.
c) Steering gear. [Refer to ST-14 (PB59K).]
ON-VEHICLE SERVICE
Steering System
ST-6
SST490BA
Checking Neutral Position on Steering Wheel
NGST0007
PRE-CHECKING
NGST0007S01
¼ Make sure that wheel alignment is correct.
Wheel alignment:
Refer to SU-20, “SERVICE DATA AND SPECIFICA-
TIONS”.
¼ Verify that the steering gear is centered before removing the
steering wheel.
CHECKING
NGST0007S02
1. Check that the steering wheel is in the neutral position when
driving straight ahead.
2. If it is not in the neutral position, remove the steering wheel and
reinstall it correctly.
3. If the neutral position is still not correct:
a. Loosen tie-rod lock nuts.
b. Move tie-rods, in opposite direction, the same amount on both
left and right sides.
This will compensate for error in the neutral position.
SMA127
Checking Front Wheel Turning Angle
NGST0008
1. Rotate steering wheel fully right, then left; measure turning
angle.
Turning angle of full turns:
Refer to SU-20, “SERVICE DATA AND SPECIFICA-
TIONS”.
2. If it is not within specification, check stopper bolt adjustment.
Refer to SU-20, “FRONT WHEEL TURNING ANGLE”, “Front
Wheel Alignment”.
Checking and Adjusting Drive Belts
NGST0009
RefertoMA-17(KA24DEengine)orMA-26(VG33Eengine),“Check-
ing Drive Belts”, “ENGINE MAINTENANCE”.
AST253
Checking Fluid Level
NGST0010
Check fluid level with engine off.
Check fluid level referring to the scale on the reservoir tank.
Use “HOT” range for fluid temperatures of 50 to 80°C (122 to
176°F). Use “COLD” range for fluid temperatures of 0 to 30°C (32
to 86°F).
CAUTION:
¼ Do not overfill.
¼ Recommended fluid is Genuine Nissan PSF II or equiva-
lent. Refer to MA-14, “Fluids and Lubricants”, “RECOM-
MENDED FLUIDS AND LUBRICANTS”.
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ON-VEHICLE SERVICE
Checking Neutral Position on Steering Wheel
ST-7
AST255
Checking Fluid Leakage
NGST0011
Check lines for improper attachment, leaks, cracks, damage, chaf-
ing and deterioration.
1. Run engine between idle speed and 1,000 rpm.
¼ Make sure temperature of fluid in reservoir tank rises to 60
to 80°C (140 to 176°F).
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for 5 seconds and
carefully check for fluid leakage.
CAUTION:
Do not hold steering wheel at lock position for more than 15
seconds.
4. If fluid leakage from any line is noticed, loosen flare nut and
then retighten.
Do not overtighten connector as this can damage O-ring,
washer and connector.
5. If fluid leakage from power steering pump is noticed, check
power steering pump. Refer to ST-24.
6. If fluid leakage from power steering gear is noticed, check
power steering gear. Refer to ST-14 (PB59K).
Bleeding Hydraulic System
NGST0012
1. Raise front end of vehicle until wheels are clear of the ground.
2. Add fluid to reservoir tank to specified level. Quickly turn steer-
ing wheel fully to right and left and lightly touch steering stop-
pers.
Repeat steering wheel operation until fluid level no longer
decreases.
3. Start engine.
Repeat step 2 above.
¼ Incomplete air bleeding will cause the following to occur:
a) Air bubbles in reservoir tank
b) Clicking noise in power steering pump
c) Excessive buzzing in power steering pump
When this happens, bleed air again.
Fluid noise may occur in the valve or power steering pump. This is
common when the vehicle is stationary or while turning the steer-
ing wheel slowly. This does not affect the performance or durabil-
ity of the system.
SST491B
Checking Steering Wheel Turning Force
NGST0013
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine and run at idle speed or 1,000 rpm.
3. Bring power steering fluid up to adequate operating tempera-
ture. [Make sure temperature of fluid is approximately 60 to
80°C (140 to 176°F).]
Tires need to be inflated to normal pressure.
4. Check steering wheel turning force when steering wheel has
been turned 360° from neutral position.
Steering wheel turning force:
ON-VEHICLE SERVICE
Checking Fluid Leakage
ST-8
PB59K-type
39 N (4 kg, 9 lb) or less
5. If steering wheel turning force is out of specification, check the
following:
a. Hydraulic system. Refer to “Checking Hydraulic System”, ST-9.
b. Steering Column. Refer to ST-11.
c. Front suspension and axle. Refer to AX-3, “Front Axle Parts”
and SU-7, “Front Suspension Parts”.
d. Steering gear turning torque. Refer to “TURNING TORQUE
MEASUREMENT”, ST-16 (PB59K).
AST203
Checking Hydraulic System
NGST0014
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve, then bleed air. Refer to “Bleed-
ing Hydraulic System”, ST-8.
2. Run engine at idle speed or 1,000 rpm.
¼ Make sure fluid temperature in reservoir tank rises to 60
to 80°C (140 to 176°F).
WARNING:
Warm up engine with shut-off valve fully opened. If engine is
started with shut-off valve closed, fluid pressure in the power
steering pump increases to maximum. This will raise fluid tem-
perature abnormally.
3. Check pressure with steering wheel fully turned to left and right
positions while idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel at full lock position for more
than 15 seconds.
Power steering pump maximum operating pressure:
7,649 - 8,238 kPa (78 - 84 kg/cm
2
, 1,109 - 1,194 psi)
at idling
¼ If pressure reaches maximum operating pressure, system is
OK.
¼ If pressure increases above maximum operating pressure,
check power steering pump flow control valve. Refer to ST-24.
4. If power steering pressure is below the maximum operating
pressure, slowly close shut-off valve and check pressure
again.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
¼ If pressure increases to maximum operating pressure, gear is
damaged. Refer to “Components”, ST-15.
¼ If pressure remains below maximum operating pressure, pump
is damaged. Refer to “Components”, ST-24.
5. After checking hydraulic system, remove Tool and add fluid as
necessary. Completely bleed air out of system. Refer to ST-8.
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ON-VEHICLE SERVICE
Checking Steering Wheel Turning Force (Cont’d)
ST-9
Components
NGST0015
AST263
ARS378
Removal and Installation
NGST0016
STEERING WHEEL
NGST0016S01
1. Remove air bag module and spiral cable. Refer to RS-16, “Air
Bag Module and Spiral Cable”, “SUPPLEMENTAL
RESTRAINT SYSTEM (SRS)”.
2. Disconnect horn connector and remove steering wheel nut.
AST226
3. Remove steering wheel using Tool.
¼ For installation, refer to RS-16, “Air Bag Module and Spiral
Cable”, “SUPPLEMENTAL RESTRAINT SYSTEM (SRS)”.
STEERING WHEEL AND STEERING COLUMN
Components
ST-10
STEERING COLUMN
NGST0016S02
Removal
NGST0016S0201
CAUTION:
¼ The rotation of the spiral cable (SRS “AIR BAG” compo-
nent part) is limited. If the steering gear must be removed,
set the front wheels in the straight-ahead direction.
Do not rotate the steering column while the steering gear
is removed.
¼ Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable. Refer
to ST-10.
1. Remove steering wheel, refer to ST-10.
2. Remove steering column covers.
3. Remove instrument lower panel. Disconnect security lamp
indicator.
4. Disconnect combination switch electrical connectors and air
bag harness connector.
5. Remove knee protector.
6. Disconnect ignition switch and shift lock solenoid connectors.
7. Disconnect shift cable.
8. Remove bolt from lower joint.
9. Remove two steering column bolts and remove steering col-
umn.
SST666A
Installation
NGST0016S0202
¼ When installing steering column, finger-tighten all lower
bracket and clamp retaining bolts; then tighten them securely.
Make sure that undue stress is not applied to steering column.
¼ When fitting steering lower joint, be sure tightening bolt faces
cutout portion.
¼ Align spiral cable correctly when installing steering wheel.
Refer to RS-16, “Air Bag Module and Spiral Cable”, “SUPPLE-
MENTAL RESTRAINT SYSTEM (SRS)”.
CAUTION:
After installation, turn steering wheel to make sure it moves
smoothly. Ensure the number of turns from the straight for-
ward position to left and right locks are the same. Be sure that
the steering wheel is in a neutral position when driving
straight ahead.
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STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont’d)
ST-11
Disassembly and Assembly
NGST0017
AST254
AST206
¼ When disassembling and assembling, unlock steering lock
with key.
¼ Install lock nut on steering column shaft and tighten the nut to
specification.
:25-34N·m (2.5 - 3.5 kg-m, 18 - 25 ft. lb)
SST741A
¼ Steering lock
a) Break self-shear type screws using a drill or other appropriate
tool.
SST742A
b) Install self-shear type screws, then tighten until heads break
off.
STEERING WHEEL AND STEERING COLUMN
Disassembly and Assembly
ST-12
SST723C
Inspection
NGST0018
¼ If steering wheel does not turn smoothly, check the steering
column as follows and replace damaged parts.
a) Check column bearings for damage and unevenness. Lubri-
cate with recommended multi-purpose grease or replace steer-
ing column as an assembly, if necessary.
b) Check jacket tube for deformation and breakage. Replace if
necessary.
¼ If the vehicle is involved in a light collision, check dimension
“L”. If it is not within specification, replace steering column as
an assembly.
Column length “L”:
863.1 - 866.7 mm (33.98 - 34.12 in)
SST582BB
TILT MECHANISM
NGST0018S01
After installing steering column, check tilt mechanism operation.
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STEERING WHEEL AND STEERING COLUMN
Inspection
ST-13
Description
NGST0030
WST058
CAUTION:
¼ Parts which can be disassembled are strictly limited.
Never disassemble parts other than those specified.
¼ Disassemble in as clean a place as possible.
¼ Clean your hands before disassembly.
¼ Do not use rags; use nylon cloths or paper towels.
¼ Follow the procedures and cautions indicated in the Ser-
vice Manual.
POWER STEERING GEAR (MODEL: PB59K)
Description
ST-14
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