2004 NISSAN TERRANO Service Repair Manual

Checking Steering Wheel Play
1. With wheels in a straight-ahead position, check steering wheelplay.Steering wheel play: 35 mm (1.38 in) or less
2. If it is not within specification, check steering gear assembly when front suspension and axle, steering gear assembly and
steering column are mounted correctly.
Checking Neutral Position on Steering Wheel
CHECKING
1. Check that the steering wheel is in the neutral position whendriving 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 between two serrated teeth, loosen tie-rod lock nut and move tie-rod in the opposite direction by the
same amount on both left and right sides to compensate for
error in the neutral position.
Front Wheel Turning Angle
Rotate steering wheel all the way right and left; measure turning
angle. Turning angle of full turns:Refer to section FA for SDS.
Checking and Adjusting Drive Belts
Refer to section MA for Drive Belt Inspection.
Checking Fluid Level
Check the fluid level in the reservoir when the engine is cold. If the
fluid level is below the MIN line, and fluid up to the MAX line.
CAUTION:
IDo not overfill the MAX level.
I Do not reuse any used power steering fluid.
I Use only ªDEXRON
TMº or equivalent.
SST103B
SST900A
SMA127
NST030
ON-VEHICLE SERVICE
ST-4
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Checking Fluid Leakage
Check the lines for improper attachment and for leaks, cracks,
damage, loose connections, chafing or deterioration.
1. Run engine between idle speed and 1,000 rpm.
Make sure temperature of fluid in oil tank rises to 50 to 80ÉC
(122 to 176ÉF).
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each ªlockº position for five seconds andcarefully check for fluid leakage.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 10 seconds (There is possibility that oil pump may be
damaged.).
4. If fluid leakage at connectors 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 at the connectors are noticed, then loosen the flare nut and retighten it.
Bleeding Hydraulic System
1. Raise front end of vehicle until wheels are clear of the ground.
2. Add fluid into oil tank to specified level. Meanwhile quickly turnsteering wheel fully to right and left and lightly touch steering
stoppers.
Repeat steering wheel operation until fluid level no longer
decreases.
3. Start engine. Repeat step 2 above.
I Incomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
a. Generation of air bubbles in reservoir tank
b. Generation of clicking noise in oil pump
c. Excessive buzzing in oil pump
While the vehicle is stationary or while moving the steering wheel
slowly, fluid noise may occur in the valve or oil pump. This noise is
inherent in this steering system, and it will not affect performance
or durability of the system.
SST621A
ON-VEHICLE SERVICE
ST-5
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Checking Steering Wheel Turning Force
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to adequate operating tempera-ture.Temperature: 50É - 80ÉC (122 - 176ÉF)
Tires need to be inflated to normal pressure.
4. Check steering wheel turning force when steering wheel has been turned 360É from neutral position.Steering wheel turning force: 39 N (4 kg, 9 lb) or less
I If steering wheel turning force is not within specification,
perform the following inspection procedure:
E
Measure steering
wheel
turning force
39 N (4 kg, 9 lb) or less.
NG
EOK Test end
Measure preload of the
power steering gear input shaft.
Refer to ªInspection and Adjustmentº in
ªPOWER STEERING GEARº.
NG
EOK Check oil pump
pressure.
Refer to ªChecking
Hydraulic Systemº in ªON-VEHICLESERVICEº.
NG
EOK Check ball joints,
swivel joints and
linkage for smooth operation.
See ªInspectionº in
ªSTEERING LINKAGEº.
NG OK
Adjust preload.Replace oil pump.Replace joints.Replace power
steering gear.
SST108B
H
HHHH
HHHH
ON-VEHICLE SERVICE
ST-6
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Checking Hydraulic System
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve, then bleed air. (Refer to ªBleed-ing Hydraulic Systemº, ST-5.)
2. Run engine.
Make sure temperature of fluid in tank rises to 60 to 80ÉC (140
to 176ÉF).
WARNING:
Warm up engine with shut-off valve fully opened. If engine is
started with shut-off valve closed, oil pressure in oil pump will
increase to relief pressure, resulting in an abnormal rise in oil
temperature.
3. Check pressure with steering wheel fully turned to left and right positions with engine idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds. Oil pump maximum standard pressure:TD27Ti engine8,800 - 9,200 kPa (88 - 92 bar,
89 - 93 kg/cm
2, 1,276 - 1,334 psi)
ZD30DTi engine 9,800 - 10,500 kPa (98.0 - 105.0 bar,
99.96 - 107.10 kg/cm
2, 1,421 - 1,523 psi)
4. If oil pressure is below the maximum pressure, slowly close shut-off valve and check pressure.
I When pressure reaches maximum pressure, gear is damaged.
I When pressure remains below maximum pressure, pump is
damaged.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
5. If oil pressure is higher than maximum pressure, check oil pump flow control valve.
6. After checking hydraulic system, remove Tool and add fluid if necessary, then completely bleed air out of system.NST033
ON-VEHICLE SERVICE
ST-7
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Removal and Installation
CAUTION:
IThe rotation of the spiral cable (SRS ªAir bagº component
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.
I Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
STEERING WHEEL
IRemove remote audio control (if applied).
I Remove air bag module and spiral cable.
Refer to RS-28, ªRemoval Ð Air Bag Module and Spiral Cableº.
YST020
SBF812E
STEERING WHEEL AND STEERING COLUMN
ST-8
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IAlign spiral cable correctly when installing steering wheel.
a) Set the front wheels in the straight-ahead position.
b) Make sure that the spiral cable is in the neutral position. The neutral position is detected by turning left 2.5 revolutions
from the right end position. Align the two marks (
).
CAUTION:
The spiral cable may snap due to steering operation if the
cable is installed in an improper position.
Also, with the steering linkage disconnected, the cable may
snap by turning the steering wheel beyond the limited number
of turns. (The spiral cable can be turned up to 2.5 turns from
the neutral position to both the right and left.)
I Remove steering wheel with Tool.
STEERING COLUMN
IWhen installing steering column, fingertighten upper support
bracket bolts and lower support bracket nuts; then tighten them
to the specified torque. Do not apply undue stress to steering
column.
I When attaching coupling joint, be sure tightening bolt faces
cutout portion.
I When inserting coupling joint onto steering gear axle, make
sure that it is positioned correctly.
CAUTION:
After installing steering column, turn steering wheel to make
sure it moves smoothly and that the number of turns from the
straight-ahead forward position to left and right locks are
equal. Be sure that the steering wheel is in a neutral position
when driving straight ahead. Number of steering wheel turns from straight-ahead
position:Right 1.93
Left 1.93
SRS266
SST777C
NST005
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont'd)
ST-9
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Disassembly and Assembly
L.H.D., R.H.D.
IWhen disassembling and assembling, unlock steering lock with
key.
I Install snap ring on upper shaft with box wrench.
YST065
NST007
SST628A
STEERING WHEEL AND STEERING COLUMN
ST-10
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IAfter installing steering column, check tilt mechanism opera-
tion.
L
1:8-12mm (0.32 - 0.47 in)
L
2: 18 - 22 mm (0.71 - 0.87 in)
I Steering lock
a. Break self-shear type screws with a drill or other appropriate tool.
b. Install self-shear type screws until self-shear type screw heads are cut off.
I When disassembling and assembling, unlock steering lock with
key.
I Ensure that rounded surface of snap ring faces towards bear-
ing when snap ring is installed.
Inspection
IWhen steering wheel can not be rotated smoothly, check the
steering column for the following matters and replace damaged
parts:
a. Check column bearings for damage or unevenness. Lubricate with recommended multi-purpose grease or replace steering
column as an assembly, if necessary.
b. Check jacket tube for deformation or breakage. Replace if nec- essary.
I When the vehicle is involved in a light collision, check column
length ªLº. If it is not within specifications, replace steering col-
umn assembly ªL
1º.
Column length: ªL
1º: 830.5 - 832.7 mm (32.697 - 32.783 in)
EST006
SST300A
SST301A
EST007
STEERING WHEEL AND STEERING COLUMN
Disassembly and Assembly (Cont'd)
ST-11
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