Isuzu KB P190. Manual — part 103

3E-8 WHEELS AND TIRES

INSPECTION AND REPAIR

Make necessary correction or parts replacement if wear, damage or any other abnormal conditions are found
through inspection.

Visual Check

Inspect all disassembled parts for wear, damage or other
abnormal conditions.

Measure Wheel Runout

mm (in)

Wheel Type

Radial

Lateral

14 inch Steel

15 inch Steel

Less than 1.0

(0.04)

Less than 1.0

(0.04)

15 inch Alumi

16 inch Alumi

Less than 0.4

(0.016)

Less than 0.55

(0.022)

If the measured value exceeds the specified limit, the wheel
must be replaced.

Balancing Wheel and Tire

On-vehicle Balancing

On-Vehicle balancing methods very with equipment and tool
manufacturers. Be sure to follow each manufacturer’s
instructions during the balancing operation.

Off- vehicle Balancing

Most electronic off-vehicle balancers are more accurate than
the on-vehicle spin balancers. They are easy to use and give a
dynamic balance. Although they do not correct drum or disc
imbalance (as the on-vehicle spin balancing does), they are
very accurate.

WHEELS AND TIRES 3E-9

Important Operations

1. Tire Assembly
To assemble, align the match mark (approx. 10mm diameter
paint mark) on the wheel with the match mark (approx. 8mm
diameter red paint mark) on the tire. If the match mark on the
wheel has disappeared, align with air valve instead.

2. Wheel and Tire Assembly

3. Wheel Nut
Tighten wheel nuts in numerical order.

Wheel Nut Torque

N

⋅m (kgf⋅m/lb⋅ft)

117.7

± 9.8 (12 ± 1.0 / 86.8 ± 7.2)

3E-10 WHEELS AND TIRES

TROUBLESHOOTING

Typical examples of abnormal tire tread wear and major causes :

CAUTION:
Similar wear patterns can be caused by worn suspension parts, misalignment of wheels and tires, and
other suspension related problems.

Spotty wear - wear localized

on shoulder section. In

extreme cases, the tire

becomes polygonal in shape.

Tire or wheel out of

round or distorted.

Hub or knuckle out

of round or distorted.

Play in hub bearings

or ball joints.

Rotating parts out of

balance.

Tread wear one-sided.

Rotating parts out of

balance.

Tire or wheel out of

round.

Hub or knuckle out

of round or distorted.

Localized tread wear.

Once spotty wear develops in

tread due to hard braking or

abrupt starting, localized wear

tends to be accelerated.

WHEELS AND TIRES 3E-11

Shoulder wear (generally

wear develops on outer

shoulder).

Camber or toe-in

incorrect.

Shoulder wear

caused by repeated

hard-cornering.

Wear on shoulders at points

opposed to each other.

Tire or wheel out of

round or distorted.

Play in bearings or

ball joint.

Premature wear on

shoulders.

Flexing of tire excessive due

to under-inflation.

One-sided feather edging.

Wear caused by

repeated hard-

cornering.

Camber or toe-in

incorrect.