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.