Exam 10: Four Wheel Alignment Part 2 Diagnostic Angles and Frame Damage

Aluminum spaceframe is manufactured using hydroforming process.

An incorrect SAI angle may be caused by a strut tower that is out of position.

While diagnosing rear axle offset and sideset:

Technician A says during a turn, both front wheels turn at the same angle. Technician B says an improper turning angle may cause tire squeal when cornering. Who is correct?

What is meant by directional stability?

In a unitized body, the front and rear suspension systems are attached to the:

Describe the condition known as rear axle offset.

On a vehicle with a straight rear axle, the right rear tire exhibits diagonal wipe. The rear toe measurements are left 0.02 and right 1.13 . Technician A says that the rear axle may be bent on the right side of the vehicle. Technician B says that the rear axle has shifted to the left. Who is correct?

On a car with a MacPherson strut front suspension, a 6 degree difference in left and right SAI angles may increase what during hard acceleration?

Technician A says the SAI line is tilted inward in relation to the true vertical tire centerline viewed from the front. Technician B says on a short-and-long arm front suspension, the SAI line is an imaginary line running through the centers of the upper and lower ball joints viewed from the front. Who is correct?

For proper tracking what must be positioned over the centerlines of the front and rear axles?

Front-wheel drive cars have a greater SAI angle to provide directional stability.

All of these statements about frame yield strength are true EXCEPT:

What are the advantages of a unitized body design?

Technician A says the door pillars and the quarter panels are the main load-carrying components in a unitized body. Technician B says the strength of a unitized body is obtained by shape and design. Who is correct?

An incorrect SAI angle on a MacPherson strut front suspension may be caused by all of these defects EXCEPT:

Technician A says a diamond frame condition affects vehicle directional stability. Technician B says a diamond frame condition causes the wheelbase to be unequal on the two sides of the vehicle. Who is correct?

The included angle is the SAI angle minus the positive camber angle.

Some components in a unitized body are manufactured from:

The turning radius angle on the outside wheel is more than the turning radius angle on the inside wheel.