Downloaded from www.Manualslib.com manuals search engine 3-2 STEERING, SUSPENSION, WHEELS AND TIRES
General Diagnosis
Since the problems in steering, suspension, wheels and tires involve several systems, they must all be consid-
ered when diagnosing a complaint. To avoid using the wrong symptom, always road test the vehicle first.
Proceed with the following preliminary inspections and correct any defects which are found.
1) Inspect tires for proper pressure and uneven wear.
2) Raise vehicle on a hoist and inspect front and rear suspension and steering system for loose or damaged
parts.
3) Spin front wheel. Inspect for out-of-round tires, out-of-balance tires, bent rims, loose and/or rough wheel
bearings.
Diagnosis Table
Condition Possible Cause Correction
Vehicle Pulls (Leads)
Mismatched or uneven tires Replace tire.
Tires not adequately inflated Adjust tire pressure.
Broken or sagging springs Replace spring.
Radial tire lateral force Replace tire.
Disturbed front wheel alignment Check and adjust wheel alignment.
Disturbed rear wheel alignment Check and adjust wheel alignment.
Brake dragging in one road wheel Repair front brake.
Loose, bent or broken front or rear suspension
partsTighten or replace suspension part.
Abnormal or
Excessive Tire WearSagging or broken springs Replace spring.
Tire out of balance Adjust balance or replace tire.
Disturbed front wheel alignment Check wheel alignment.
Faulty shock absorber Replace shock absorber.
Hard driving Replace tire.
Overloaded vehicle Replace tire.
Not rotating tire Replace or rotate tire.
Worn or loose road wheel bearings Replace wheel bearing.
Wobbly wheel or tires Replace wheel or tire.
Tires not adequately inflated Adjust the pressure.
Wheel Tramp
Blister or bump on tire Replace tire.
Improper shock absorber action Replace shock absorber.
Downloaded from www.Manualslib.com manuals search engine 3-4 STEERING, SUSPENSION, WHEELS AND TIRES
Abnormal Noise,
Front EndWorn, sticky or loose tie rod ends, drug rod ball
joints, king pin bearings or axle shaft jointsReplace tie rod end, king pin bear-
ing or axle shaft joint.
Damaged shock absorbers or mountings Replace or repair.
Worn leading arm bushings Replace.
Worn stabilizer bar bushings Replace.
Worn Iateral rod bushings Replace.
Loose stabilizer bar Tighten bolts or replace bushes.
Loose wheel nuts Tighten wheel nuts.
Loose suspension bolts or nuts Tighten suspension bolts or nuts.
Broken or otherwise damaged wheel bearings Replace wheel bearing.
Broken suspension springs Replace spring.
Wander or Poor
Steering StabilityMismatched or uneven tires Replace tire or inflate tires to
proper pressure.
Loose king pin bearings and tie rod ends Replace king pin bearing or tie rod
end.
Faulty shock absorbers or mounting Replace absorber or repair mount-
ing.
Loose stabilizer bar Tighten or replace stabilizer bar or
bushes.
Broken or sagging springs Replace spring.
Steering gear box not properly adjusted Check or adjust steering gear box
torque.
Front wheel alignment Check and adjust front wheel align-
ment.
Erratic Steering when
BrakingWorn wheel bearings Replace wheel bearing.
Broken or sagging springs Replace spring.
Leaking wheel cylinder or caliper Repair or replace wheel cylinder or
caliper.
Warped discs Replace brake disc.
Badly worn brake linings Replace brake shoe lining.
Drum is out of round in some brakes Replace brake drum.
Wheel tires are inflated unequally Inflate tires to proper pressure.
Defective wheel cylinders Replace or repair wheel cylinder.
Disturbed front wheel alignment Check front wheel alignment
Ride Too Soft
Faulty shock absorber Replace shock absorber.
Suspension bottoms
Overloaded Check loading.
Faulty shocks absorber Replace shock absorber.
Incorrect, broken or sagging springs Replace spring.
Body Leans or Sways
in CornersLoose stabilizer bar Tighten stabilizer bar bolts or
replace bushes.
Faulty shocks absorbers or mounting Replace shock absorber or tighten
mounting.
Broken or sagging springs Replace spring.
Overloaded Check loading.
Cupped Tires
Worn wheel bearings Replace wheel bearing.
Excessive tire or wheel run-out Replace tire or wheel disc.
Tire out of balance Adjust tire balance. Condition Possible Cause Correction
Downloaded from www.Manualslib.com manuals search engine 3C-2 STEERING WHEEL AND COLUMN
General Description
This double tube type steering column has the following three important features in addition to the steering func-
tion:
The column is energy absorbing, designed to compress in a front-end collision.
The ignition switch and lock are mounted conveniently on this column.
With the column mounted lock, the ignition and steering operations can be locked to inhibit theft of the vehi-
cle.
To insure the energy absorbing action, it is important that only the specified screws, bolts and nuts be used as
designated and that they are tightened to the specified torque.
When the column assembly is removed from the vehicle, special care must be taken in handling it. Use of a
steering wheel puller other than the one recommended in this manual or a sharp blow on the end of the steering
shaft, leaning on the assembly, or dropping the assembly could shear the plastic shear pins which maintain col-
umn length and position.
The driver air bag (inflator) module is one of the supplemental restraint (air bag) system components and is
mounted to the center of the steering wheel. During certain frontal crashes, the air bag system supplements the
restraint of the driver’s and passenger’s seat belts by deploying the air bags.
The air bag (inflator) module should be handled with care to prevent accidental deployment. When servicing, be
sure to observe all WARNINGS and CAUTIONS in this section and “Service Precautions” in Section 10B.
1. Driver air bag (inflator) module 6. Steering column upper cover 11. Steering lower shaft
2. Steering wheel 7. Steering column lower cover [A] : For vehicle with air bag system
3. Steering wheel side cap 8. Steering column assembly [B] : For vehicle without air bag system
4. Steering wheel nut 9. Steering lock assembly (ignition switch)
5. Combination switch or contact coil and com-
bination switch assembly10. Steering column hole cover
Downloaded from www.Manualslib.com manuals search engine FRONT SUSPENSION 3D-1
6F1
6F2
6G
1A
6K
7A
7A1
3D
7F
8A
8A
8B
8C
8D
8E
9
10
10A
10B
SECTION 3D
FRONT SUSPENSION
CONTENTS
General Description ....................................... 3D-2
4WD Control System .................................... 3D-2
Diagnosis ........................................................ 3D-8
Diagnosis Table ........................................... 3D-8
4WD Controller and ITS Circuit Check ....... 3D-10
4WD Control System Check ...................... 3D-11
Stabilizer bar / bushing check ................ 3D-13
Shock Absorber and/or Coil Spring
Check ......................................................... 3D-14
Leading Arm / Lateral Rod / Steering
Knuckle Check ........................................... 3D-14
Leading Arm Bushing / Lateral Rod
Bushing Check ........................................... 3D-15
Kingpin / Kingpin Bearing Check ................ 3D-15
Barfield Joint Check ................................... 3D-15
Steering Knuckle Seal Check ..................... 3D-15
Wheel Disc, Nut and Bearing Check .......... 3D-16On-Vehicle Service ...................................... 3D-17
Stabilizer Bar / Bushings ............................ 3D-17
Front Shock Absorber ................................ 3D-19
Coil Spring ................................................. 3D-19
Bump Stopper and Spring Upper Seat ...... 3D-21
Wheel Hub / Bearing / Oil Seal .................. 3D-21
Steering Knuckle / Wheel Spindle.............. 3D-28
Front Axle Shaft / Oil Seal / Kingpin
Bearing Outer Race ................................... 3D-32
Steering Knuckle Seal................................ 3D-34
Lateral Rod ................................................ 3D-35
Leading Arm / Bushing............................... 3D-36
Front Axle Housing .................................... 3D-38
Tightening Torque Specifications .............. 3D-44
Required Service Material ........................... 3D-44
Special Tool .................................................. 3D-45
WARNING:
When hoisting vehicle, be sure to select the lifting point suitable for the service work referring to Sec-
tion 0A.
NOTE:
All front suspension fasteners are an important attaching part in that it could affect the performance
of vital parts and systems, and/or could result in major repair expense. They must be replaced with
one of the same part number or with an equivalent part if replacement becomes necessary. Do not
use a replacement part of lesser quality or substitute design. Torque values must be used as speci-
fied during reassembly to assure proper retention of this part.
Never attempt to heat, quench or straighten any front suspension part. Replace it with a new part or
damage to the part may result.
Downloaded from www.Manualslib.com manuals search engine 3D-2 FRONT SUSPENSION
General Description
4WD Control System
The 4WD control system consists of a 4WD switch, a vacuum switch, a vacuum tank, two vacuum switching
valves (VSV1 and VSV2) and air locking hub assemblies.
The 4WD controller controls locking or unlocking of the air locking hub according to operation of the transfer shift
control lever.
Vacuum generated in the intake manifold passes through the check valve and stored in the vacuum tank.
According to signals from the 4WD switch, the 4WD controller activates VSV1 (for unlocking) or VSV2 (for lock-
ing) to apply vacuum from the vacuum tank so that the front axle and the wheel hub are disengaged or engaged.
1. Front axle housing 3. Steering knuckle 5. Wheel spindle 7. Wheel bearing
2. Shock absorber 4. Kingpin 6. Wheel hub 8. Front axle shaft (4WD)
Downloaded from www.Manualslib.com manuals search engine FRONT SUSPENSION 3D-3
1. Air locking hub assembly 4. VSV2 7. 4WD controller 10. 4WD indicator light 13. ABS controller
2. VSV1 5. Vacuum accumulation tank 8. Intake manifold 11. 4WD switch 14. Transfer
3. Check valve 6. Vacuum switch 9. Wheel spindle 12. Combination meter
Downloaded from www.Manualslib.com manuals search engine 3D-14 FRONT SUSPENSION
Shock Absorber and/or Coil Spring Check
1) Inspect shock absorber for oil leakage. If shock absorber is
found faulty, replace it as an assembly unit, because it can
not be disassembled.
2) Shock absorber function check
Check and adjust tire pressures as specified.
Bounce body three or four times continuously by pushing
front end on the side with shock absorber to be checked.
Apply the same amount of force at each push and note
shock absorber resistance both when pushed and rebound-
ing.
Also, note how many times vehicle body rebounds before
coming to stop after hands are off. Do the same for shock
absorber on the other side.
Compare shock absorber resistance and number of rebound
on the right with those on the left.
And they must be equal in both. With proper shock absorber,
body should come to stop the moment hands are off or after
only one or two small rebounds. If shock absorbers are sus-
pected, compare them with known good vehicle or shock
absorber.
3) Inspect for damage or deformation.
4) Inspect for cracks or deformation in spring seat.
5) Inspect for deterioration of bump stopper.
6) Inspect shock absorber mount for wear, cracks or deforma-
tion.Replace any parts found defective in steps 2) – 6).
Leading Arm / Lateral Rod / Steering Knuckle
Check
Inspect for cracks, deformation or damage.
Downloaded from www.Manualslib.com manuals search engine FRONT SUSPENSION 3D-19
Front Shock Absorber
REMOVAL
1) Hoist vehicle.
2) Support front axle housing by using floor jack to prevent it
from lowering, refer to “When Using Floor Jack” under “Vehi-
cle Lifting Points” in Section 0A.
3) Remove shock absorber lower mounting bolt (6).
4) Remove shock absorber upper mounting lock nut (2) and
absorber nut (3). Then remove shock absorber (1).
INSTALLATION
Install removed parts in reverse order of removal proceeded, not-
ing the followings.
As shown in figure, install washer (4) and bush (5) first and
after tightening absorber nut (3) tighten lock nut (2) to speci-
fied torque.
Tightening torque
Shock absorber lock nut
(a) : 29 N·m (2.9 kg-m, 21.0 lb-ft)
Install absorber lower mounting bolt (6) in proper direction as
shown in the figure and tighten it with no load applied to axle
housing.
Tightening torque
Shock absorber lower nut
(b) : 90 N·m (9.0 kg-m, 65.0 lb-ft)
Confirm front end (wheel) alignment referring to “Preliminary
Checks Prior to Adjusting Front Alignment” in Section 3A.
Coil Spring
REMOVAL
1) Hoist vehicle and remove wheel.
2) Disconnect stabilizer ball joint from axle housing.
3) Remove brake caliper carrier bolts and suspend caliper.
W: Wheel side
7. Lower mounting nut
CAUTION:
During removal, be careful not to damage brake flexible
hose and wheel speed sensor harness (vehicle with ABS)
and not to depress brake pedal.