
STEERING SYSTEM
SECTION
ST
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)″AIR
BAG″and″SEAT BELT PRE-TENSIONER″...............2
Precautions for Steering System .................................2
PREPARATION...............................................................3
Special Service Tools ..................................................3
Commercial Service Tool .............................................3
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................5
NVH Troubleshooting Chart.........................................5
ON-VEHICLE SERVICE..................................................6
Checking Steering Wheel Play ....................................6
Checking Neutral Position on Steering Wheel ............6
PRE-CHECKING........................................................6
CHECKING...............................................................6
Front Wheel Turning Angle ..........................................6
Checking Gear Housing Movement ............................6
Checking and Adjusting Drive Belts ............................7
Checking Steering Gear and Linkage .........................7
STEERING GEAR......................................................7
STEERING LINKAGE.................................................7
Checking Fluid Level ...................................................7
Checking Fluid Leakage ..............................................7
Bleeding Hydraulic System..........................................8
Checking Steering Wheel Turning Force ....................8
Checking Hydraulic System.........................................9
STEERING WHEEL AND STEERING COLUMN.........10
Components...............................................................10
Removal and Installation ...........................................10
STEERING WHEEL.................................................10
STEERING COLUMN............................................... 11
Disassembly and Assembly .......................................13Inspection...................................................................14
TILT MECHANISM...................................................14
POWER STEERING GEAR AND LINKAGE................15
Components...............................................................15
Removal and Installation ...........................................16
Inspection...................................................................17
STEERING GEAR....................................................18
BOOT.....................................................................18
TIE-ROD OUTER AND INNER SOCKETS..................18
Assembly ...................................................................18
Adjustment .................................................................20
POWER STEERING OIL PUMP (QG ENGINE)...........21
Components...............................................................21
Inspection...................................................................21
POWER STEERING OIL PUMP (SR ENGINE)............22
Components...............................................................22
Inspection...................................................................22
POWER STEERING OIL PUMP (YD ENGINE)............23
Components...............................................................23
Pre-disassembly Inspection .......................................23
Removal and Installation ...........................................24
Disassembly...............................................................24
Inspection...................................................................25
Assembly ...................................................................26
SERVICE DATA AND SPECIFICATIONS (SDS).........27
General Specifications ...............................................27
Steering Wheel ..........................................................27
Steering Column ........................................................27
Steering Gear and Linkage .......................................28
Power Steering ..........................................................28

Checking and Adjusting Drive BeltsNLST0011Refer to EM-17,“Checking Drive Belts”.
SMA851B
Checking Steering Gear and LinkageNLST0037STEERING GEARNLST0037S01+Check gear housing and boots for looseness, damage or
grease leakage.
+Check connection with steering column for looseness.
STEERING LINKAGENLST0037S02+Check ball joint, dust cover and other component parts for
looseness, wear, damage or grease leakage.
YST003
Checking Fluid LevelNLST0012Check fluid level, referring to the scale on 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:
+Do not overfill.
+Recommended fluid is DEXRON
TMIII or equivalent. Refer
to MA-20,“Fluids and Lubricants”.
YST004
YST005
Checking Fluid LeakageNLST0013Check the lines for improper attachment and for leaks, cracks,
damage, loose connections, chafing and deterioration.
1. Run engine between idle speed and 1,000 rpm.
Make sure temperature of fluid in oil 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 five seconds
and carefully check for fluid leakage.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
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 from power steering pump is noticed, check
power steering pump. Refer to ST-21.
6. Check rack boots for accumulation of power steering fluid.
ON-VEHICLE SERVICE
Checking and Adjusting Drive Belts
ST-7

Bleeding Hydraulic SystemNLST00141. Raise front end of vehicle until wheels are clear of the ground.
2. Add fluid into oil tank to specified level. Then 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.
+Incomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
a) Air bubbles in reservoir tank
b) Clicking noise in oil pump
c) Excessive buzzing in oil pump
Fluid noise may occur in the valve or oil pump. This is common
when the vehicle is stationary or while turning the steering wheel
slowly. This does not affect the performance or durability of the
system.
SST491B
SST090B
Checking Steering Wheel Turning ForceNLST00151. 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. [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 the neutral position.
Steering wheel turning force:
26 - 32 N (2.7 - 3.3 kg, 5.8 - 7.2 lb)
5. If steering wheel turning force is out of specification, check
rack sliding force.
a. Disconnect steering column lower joint and knuckle arms from
the gear.
b. Start and run engine at idle to make sure steering fluid has
reached normal operating temperature.
c. Pull tie-rod slowly to move it from neutral position to±11.5 mm
(±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack
sliding force is within specification.
Average rack sliding force:
197 - 255 N (20.1 - 26.0 kg, 44.3 - 57.3 lb)
6. If rack sliding force is not within specification, replace steering
gear assembly.
7. If rack sliding force is OK, inspect steering column. Refer to
ST-13.
ON-VEHICLE SERVICE
Bleeding Hydraulic System
ST-8

SST834-I
Checking Hydraulic SystemNLST0016Before 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.
Make sure temperature of fluid in 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 oil pump
increases to maximum. This will raise oil temperature abnor-
mally.
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:
SR engine
8,600 - 9,200 kPa (86.0 - 92.0 bar, 87.7 - 93.8
kg/cm
2, 1,247 - 1,334 psi)
QG engine
8,600 - 9,200 kPa (86.0 - 92.0 bar, 87.7 - 93.8
kg/cm
2, 1,247 - 1,334 psi)
YD engine
8,800 - 9,400 kPa (88.0 - 94.0 bar, 88.7 - 95.8
kg/cm
2, 1,261 - 1,362 psi)
+If pressure reaches maximum operating pressure, system is
OK.
+If pressure increases above maximum operating pressure,
check power steering pump flow control valve. Refer to ST-21.
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.
+If pressure increases to maximum operating pressure, gear is
damaged. Refer to“Removal and Installation”, ST-16.
+If pressure remains below maximum operating pressure, pump
is damaged. Refer to“Disassembly”, ST-24.
5. After checking hydraulic system, remove Tool and add fluid as
necessary. Then completely bleed air out of system. Refer to
ST-8.
ON-VEHICLE SERVICE
Checking Hydraulic System
ST-9

SMA829C
TIRE ROTATIONNLSU0043+Do not include the T-type spare tire when rotating the tires.
Wheel nuts:
:98-118N·m (10.0 - 12.0 kg-m, 72 - 87 ft-lb)
FRONT WHEEL ALIGNMENTNLSU0045Before checking front wheel alignment, be sure to make a prelimi-
nary inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand
tools and mats in designated positions.
SRA096A
Camber, Caster and Kingpin InclinationNLSU0045S01Camber, caster and kingpin inclination are preset at factory
and cannot be adjusted.
1. Measure camber, caster and kingpin inclination of both right
and left wheels with a suitable alignment gauge.
Camber, caster and kingpin inclination:
Refer to SDS, SU-15.
2. If camber, caster or kingpin inclination is not within
specification, inspect front suspension parts. Replace dam-
aged or worn out parts.
AFA050
Toe-inNLSU0045S02Measure toe-in using the following procedure.
WARNING:
+Always perform the following procedure on a flat surface.
+Make sure that no person is in front of the vehicle before
pushing it.
1. Bounce front of vehicle up and down to stabilize the posture.
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of tread (rear side) of both tires at the
same height as hub center. These are measuring points.
SFA234AC
4. Measure distance“A”(rear side).
5. Push the vehicle slowly ahead to rotate the wheels 180
degrees (1/2 turn).
If the wheels have rotated more than 180 degrees (1/2 turn), try
the above procedure again from the beginning. Never push
vehicle backward.
6. Measure distance“B”(front side).
Total toe-in:
Refer to SDS, SU-15.
FRONT SUSPENSION
On-vehicle Service (Cont’d)
SU-8

SMA525A
On-vehicle Service
REAR SUSPENSION PARTSNLSU0029Check axle and suspension parts for excessive play, wear or dam-
age.
+Shake each rear wheel to check for excessive play.
SSU036
+Retighten all nuts and bolts to the specified torque.
Tightening torque:
Refer to“REAR SUSPENSION”, SU-18.
SMA113
+Check shock absorber for oil leakage or other damage.
+Check wheelarch height. Refer to“On-vehicle Service”,
“FRONT SUSPENSION PARTS”, SU-6.
REAR WHEEL ALIGNMENTNLSU0030Before checking rear wheel alignment, be sure to make a prelimi-
nary inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand
tools and mats in designated positions.
SFA975B
Preliminary InspectionNLSU0030S01Aluminum wheelNLSU0030S01011. Check tires for wear and improper inflation.
2. Check wheels for deformation, cracks and other damage. If
deformed, remove wheel and check wheel runout.
a. Remove tire from aluminum wheel and mount on a tire balance
machine.
b. Set dial indicator as shown in the illustration.
Wheel runout (Dial indicator value):
Refer to SDS, SU-16.
3. Check front wheel bearings for looseness.
REAR SUSPENSION
On-vehicle Service
SU-19