Suspension & Steering
Work Example 4

WorkKey Level: 4
NATEF Automotive Tasks: IV.D.2, IV.D.3, IV.D.5, IV.D.6, IV.D.7

Manufacturer’s specs give the information needed to make decisions about camber adjustment. 

Camber angle tolerance is given as a range of acceptable values.  This range can be written as an inequality.  A mathematical inequality is a statement that uses the symbols <, <, >, >.

For example, if the camber angle tolerance is given as 1.0° ± 0.5°, then the inequality is written as 0.5° < c < 1.5°.  This statement is read as camber angle, c, is greater than or equal to 0.5° and less than or equal to 1.5°.

For a 2002 Mitsubishi Eclipse, the camber angle tolerance in degrees is 0.75° + 0.5°.  You measure the right rear wheel camber of your customer’s Eclipse.  It measures 1.4°.

a.  Label and shade the number line below to show the given camber angle tolerance.

 

b.  Determine the tolerance interval graph and indicate the optimal value.

c.  Determine the adjustment for the optimal or preferred setting.

d.  Determine the minimum and maximum adjustment for an acceptable measure.

e.  Write a mathematical inequality and tolerance interval of camber, c, you have determined.

Solutions:

a. 
      0.5°                 1.0°                1.5°

b.  0.25 through 1.25
      
     0.25°                                       1.25°               1.4°

c.  0.15° less.  (1.4 – 1.25 = 0.15)
d.  0.15° through 1.15°
e.  0.15° < c < 1.15°