tires SUZUKI JIMNY 2005 3.G Service User Guide

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Tire Diagnosis
Irregular and/or Premature Wear
Irregular and premature wear has many possible causes. Some
of them are: incorrect inflation pressures lack of tire rotation, driv-
ing habits, improper alignment.
If the following conditions are noted rotation is in order:
Front tire wear is different from rear.
Uneven wear exists across the tread of any tire.
Left front and right front tire wear is unequal.
Left rear and right rear tire wear is unequal.
There is cupping, flat spotting, etc.
A wheel alignment check is in order if the following conditions are
noted:
Left front and right front tire wear is unequal.
Wear is uneven across the tread of any front tire.
Front tire treads have scuffed appearance with “feather”
edges on one side of tread ribs or blocks.
Wear Indicators
The original equipment tires have built-in tread wear indicators to
show when tires need replacement. These indicators will appear
as 12 mm (0.47 inch) wide bands when the tire tread depth
becomes 1.6 mm (0.063 inch). When the indicators appear in 3 or
more grooves at 6 locations, tire replacement is recommended.
Radial Tire Waddle
Waddle is side to side movement at the front and/or rear of the
vehicle. It is caused by the steel belt not being straight within the
tire. It is most noticeable at low speed, 5 to 30 mph. It is possible
to road test a vehicle and tell on which end of the vehicle the
faulty tire is located. If the waddle tire is on the rear, the rear end
of the vehicle will shake from side to side or “waddle”. From the
driver’s seat it feels as though someone is pushing on the side of
the vehicle. If the faulty tire is on the front, the waddle is more
visual. The front sheet metal appears to be moving back and forth
and the driver feels as though he is at the pivot point in the vehi-
cle. Waddle can be quickly diagnosed by using a Tire Problem
Detector (TPD) and following the equipment manufacturer’s rec-
ommendations.
If a TPD is not available, the more time consuming method of sub-
stituting known good tire / wheel assemblies on the problem vehi-
cle can be used as follows:
[A] : Hard cornering, under inflation or lack of tire rotation
[B] : Incorrect wheel alignment, tire construction not uniform or wheel heavy acceleration

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1) Ride vehicle to determine whether the front or rear waddles.
2) Install tires and wheels that are known to be good (on similar vehicle) in place of those on wadding end of
vehicle. If wadding end cannot be identified, substitute rear ones.
3) Road test again. If improvement is noted, reinstall originals one at a time till waddle causal tire is found. If no
improvement is noted, install known good tires in place of all four. Then reinstall originals in the same man-
ner as above.
EQUIPMENT MANUFACTURE’S RECOMMENDATIONS
INFLATE TIRES TO RECOMMENDED
PRESSURE
ROAD TEST VEHICLE LEVEL
UNCROWNED ROAD IN
BOTH DIRECTIONS
SWITCH FRONT TIRES
SIDE TO SIDE AND
ROAD TEST AGAIN
LEAD CORRECTED IF
ROUGHNESS RESULTS.
REPLACE TIRES
INSTALL A KNOWN GOOD TIRE
ON ONE FRONT SIDE
LEAD REMAING
INSTALL A KNOWN GOOD TIRE IN
PLACE OF OTHER FRONT TIRE
LEAD REMAING
KNOWN GOOD TIRES ARE NOT GOOD
LEAD CORRECTED
REPLACE TIRE
LEAD REVERSES
DIRECTION
PUT TIRES BACK IN
ORIGINAL POSITION
AND CHECK ALIGNMENT
LEAD IN SAME
DIRECTION
LEAD CORRECTED
REPLACE TIRE

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Radial Tire Lead
“Lead” is the deviation of the vehicle from a straight path on a level rod even with no pressure on the steering
wheel.
Lead is usually caused by:
1) Incorrect alignment.
2) Uneven brake adjustment.
3) Tire construction.
The way in which a tire is built can produce lead in a vehicle. An example of this is placement of the belt. Off
center belts on radial tires can cause the tire to develop a side force while rolling straight down the road. If one
side of the tire has a little larger diameter than the other, the tire will tend to roll to one side. This will develop a
side force which can produce vehicle lead.
The procedure in above figure (Lead Diagnosis) should be used to make sure that front alignment is not mis-
taken for tire lead.
1) Part of the lead diagnosis procedure is different from the proper tire rotation pattern currently in the owner
and service manuals. If a medium to high mileage tire is moved to the other side of the vehicle, be sure to
check that ride roughness has not developed.
2) Rear tires will not cause lead.
Vibration Diagnosis
Wheel unbalance causes most of the highway speed vibration problems. If a vibration remains after dynamic
balancing, its possible causes are as follows.
1) Tire runout.
2) Wheel runout.
3) Tire stiffness variation.
Measuring tire and/or wheel free runout will uncover only part of the problem. All three causes, known as loaded
radial runout, must be checked by using a Tire Problem Detector (TPD). If TPD is not available, alternative
method of substituting known good tire and wheel assemblies on the problem vehicle can be used, although it
takes a longer time.
[A] : Tire out of round 1. Smooth road
[B] : Tire stiffness variation 2. Suspension movement (loaded runout)
[C] : Rim bent or out of round

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Diagnosis
Diagnosis Table
For the details, refer to “Diagnosis Table” in Section 3.
Preliminary Checks Prior To Adjusting Front Wheel Alignment
Steering and vibration complaints are not always the result of improper alignment. An additional item to be
checked is the possibility of tire lead due to worn or improperly manufactured tires. “Lead” is the deviation of the
vehicle from a straight path on a level road without hand pressure on the steering wheel. Section 3 of this man-
ual contains a procedure for determining the presence of a tire lead problem. Before making any adjustment
affecting toe setting, the following checks and inspections should be made to ensure correctness of alignment
readings and alignment adjustments:
1) Check all tires for proper inflation pressures and approximately the same tread wear.
2) Check for loose of king pin bearings. Check tie rod ends; if excessive looseness is noted, it must be cor-
rected before adjusting.
3) Check for run-out of wheels and tires.
4) Check vehicle trim heights; if out of limits and a correction is to be made, it must be made before adjusting
toe.
5) Check for loose of suspension arms.
6) Check for loose or missing stabilizer bar attachments.
7) Consideration must be given to excess loads, such as tool boxes. If this excess load is normally carried in
vehicle, it should remain in vehicle during alignment checks.
8) Consider condition of equipment being used to check alignment and follow manufacturer's instructions.
9) Regardless of equipment used to check alignment, vehicle must be on a level surface both fore and aft and
transversely.
Toe Adjustment
Toe is adjusted by changing tie rod length. Loosen right and left
tie rod end lock nuts first and then rotate tie rod to align toe-in to
specification.
In this adjustment, right and left tie rod should become equal in
length (“A”).
After adjustment, tighten lock nuts to specified torque.
Tightening torque
Tie rod end lock nuts
(a) : 65 N·m (6.5 kg-m, 47.0 lb-ft)

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Steering Wheel Play Check
With engine ON, check steering wheel play as follows. Move
steering wheel to the right and left from its straight position
and measure along its circumference how much it must be
turned before tires start to move. It should be as specified
below.
Steering wheel play
“a” : 30 mm (1.18 in.) or less
Also, check steering wheel for looseness or rattle by trying to
move it in its column direction and forward direction.
Steering Force Check
1) Place vehicle on level concreted road and set steering wheel
at straight position.
2) Check that tire inflation pressure is as specified (Refer to tire
placard).
3) Start engine and keep it running till power steering fluid is
warmed to 50 to 60 °C (122 – 140 °F).
4) With engine running at idling speed, measure steering force
by pulling spring balancer hooked on steering wheel in tan-
gential direction.
Steering force
Less than 6.0 kg (13.2 lb)

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5) Remove steering wheel (1) with special tool.
Special tool
(A) : 09944-36011
INSTALLATION
1) Check that vehicle’s front tires are at straight-ahead position.
If equipped with air bag system, align contact coil to original
position referring to “Centering Contact Coil” in this section.
2) Install steering wheel as follows.
For vehicle without air bag system
a) Apply grease to contact plate (1).
“A” : Grease 99000-25290
b) Install steering wheel onto shaft, aligning them by match
marks.
For vehicle with air bag system
Install steering wheel to steering shaft with 2 lugs (2) on con-
tact coil fitted in two grooves (3) in the back of steering wheel
and also aligning marks (4) on steering wheel and steering
shaft. CAUTION:
Do not hammer the end of the shaft. Hammering it will
loosen the plastic shear pins which maintain the column
length and impair the collapsible design of the column.
CAUTION:
For vehicle with air bag system
These two conditions are prerequisite for installation of
steering wheel. If steering wheel has been installed with-
out these conditions, contact coil will break when steer-
ing wheel is turned.
[A] : For vehicle without air bag system
[B] : For vehicle with air bag system

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3) Tighten steering shaft nut to specified torque.
Tightening torque
Steering shaft nut (a) : 33 N·m (3.3 kg-m, 23.5 lb-ft)
4) Install steering wheel pad (for vehicle without air bag system)
or driver air bag (inflator) module (for vehicle with air bag
system) as follows.
For vehicle without air bag system
–For TYPE A
a) Connect horn connector.
b) Install steering wheel pad.
–For TYPE B
a) To install the pad, hook (1) the upper part of the pad to the
pawl of the steering wheel and push in the lower part of the
pad until it fits to the set spring securely.
For vehicle with air bag system
a) Install driver air bag (inflator) module to steering wheel.
Refer to “Driver Air Bag (Inflator) Module” in this section.
Centering contact coil (for vehicle with air bag sys-
tem)
1) Check that vehicle’s wheels (front tires) are set at straight-
ahead position.
2) Check that ignition switch is at “LOCK” position.
3) Turn contact coil counterclockwise slowly with a light force till
contact coil will not turn any further. NOTE:
After installing the steering wheel, turn the steering
wheel about 1 full rotation so that the cancel cam pin fits
into the pin hole in the steering wheel and then check the
turn signal lever for proper function.
NOTE:
Contact coil can turn about 5 turns at maximum, that is, if
it is at the center position, can turn about two and a half
turns both clockwise and counterclockwise.

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7) Remove combination switch/contact coil and combination
switch assembly (1) from steering column.
INSPECTION
For vehicle with air bag system
Check contact coil and combination switch wire harness for
any signs of scorching, melting or other damage. If it is dam-
aged, replace.
INSTALLATION
1) Check to make sure that vehicle’s front tires are set at
straight-ahead position and then ignition switch is at “LOCK”
position.
2) Install combination switch/contact coil and combination
switch assembly to steering column.
3) Connect all connectors that have been disconnected in
“REMOVAL”.
4) Install steering column upper (3) and lower cover (4), and
then tighten steering column cover standard screw (1) and
tapping screws (2).
1. Contact coil and combination switch assembly
2. To horn
3. Connector to driver air bag (inflator) module
4. Connector to air bag wire harness
NOTE:
For vehicle with air bag system
New contact coil and combination switch assembly is
supplied with contact coil set and held at its center posi-
tion with a lock pin (2) and seal (1). Remove this lock pin
after installing contact coil and combination switch
assembly to steering column.
CAUTION:
When installing lower cover (3) and upper cover (2), be
careful so that combination switch/contact coil and com-
bination switch lead wirer is not caught between covers.

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REMOVAL
1) Disconnect negative battery cable at battery terminal.
2) For vehicle equipped with air bag system, disable air bag
system referring to “Disabling Air Bag System” in Section
10B.
3) If necessary, remove steering wheel and combination switch
assembly referring to “Steering Wheel” and “Combination
switch/Contact Coil and Combination Switch Assembly” in
this section.
If not removing steering wheel and/or combination switch
assembly, perform the following procedure.
a) Turn steering wheel so that vehicle’s front tires are at
straight ahead position.
b) Turn ignition switch to “LOCK” position and remove key.
4) Remove steering column hole cover (1).
5) Disconnect all connectors of the following parts.
Combination switch/contact coil and combination switch
assembly.
Ignition switch.
Immobilizer control system parts (if equipped).
6) Remove joint bolt (steering column side) (3) and loosen joint
bolt (steering gear box side).
7) Remove steering column mounting nuts (2) and bolts (1).WARNING:
For vehicle with air bag system
Never rest a steering column assembly on the steering
wheel with the air bag (inflator) module face down and
column vertical. Otherwise, personal injury may result.