Operation CHARM: Car repair manuals for everyone.

Inspection




ROAD WHEEL

Inspection


ALUMINUM WHEEL

1.Check tires for wear and improper inflation.
2.Check wheels for deformation, cracks and other damage. If deformed, remove wheel and check wheel runout.





3.Remove tire from aluminum wheel and mount wheel on a tire balance machine.

CAUTION:
DO NOT use center hole cone-type clamping machines to hold the wheel assembly during tire removal/installation or balancing. Damage to the wheel finish, cladding or chrome may occur. Use only rim-type or universal lug-type clamping machines to hold the wheel assembly.
a.Set dial indicator as shown.
b.Check runout, if lateral runout (A) or radial runout (B) exceeds the limit, install a new wheel.

Lateral Deflection (A)Refer to "Road Wheel" Specifications.
Vertical Deflection (B)Refer to "Road Wheel" Specifications.

STEEL WHEEL

1.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 steel wheel and mount on a balancer machine.





b.Set two dial indicators as shown.
c.Set each dial indicator to "0".
d.Rotate wheel and check dial indicators at several points around the circumference of the wheel.
e.Calculate runout at each point as shown below.

Lateral deflection (A) = (W+X)/2
Vertical deflection (B) = (Y+Z)/2

f.Select maximum positive runout value and the maximum negative value.
Add the two values to determine total runout.
In case a positive or negative value is not available, use the maximum value (negative or positive) for total runout.
If the total runout value exceeds the limit, replace steel wheel.

Lateral Deflection (A) Refer to "Road Wheel" Specifications.
Vertical Deflection (B) Refer to "Road Wheel" Specifications.