Exam 9: Four Wheel Alignment Part 1 Primary Angles

How does positive caster provide increased directional stability?

Excessive toe-in on the front wheels causes wear on the inside edge of the tire treads.

Technician A says a jack-and-hold feature on some computer wheel aligners allows the technician to lift one side of the suspension with a jack while maintaining accurate alignment readings on the screen. Technician B says when using a computer wheel aligner, the technician may print out any screen at any time. Who is correct?

If the front suspension height is lowered on a McPherson strut suspension, what effect will this have on front wheel caster?

Some computer wheel aligners provide a ride height screen indicating where the ride height should be measured.

Technician A says if the front wheels have a toe-out condition, the distance between the front edges of the tires is greater than the distance between the rear edges of the tires. Technician B says many front-wheel drive cars have a slight toe-out setting because driving forces tend to move the front wheels to a toe-in position. Who is correct?

Describe toe-out.

When one of the front wheels strikes a road irregularity, the steering suddenly veers to the right or left on a vehicle with a parallelogram steering linkage. The most likely cause of this problem is:

Technician A says a tire pressure check is not required before a wheel alignment. Technician B says a front wheel bearing play should be checked before a wheel alignment. Who is correct?

What term refers to the tendency of a vehicle to travel in a straight-ahead direction without being steered?

Caster adjustments may be provided by all of these methods EXCEPT:

The thrust line is an imaginary line positioned at a 90 degree angle to the rear wheel centerline and projected forward.

Technician A says front wheel toe should be measured with the front wheels in the straight-ahead position. Technician B says excessive front wheel toe-in causes steering pull to the right. Who is correct?

When measuring front suspension caster angles, what must you do to the vehicle?

Technician A says on many rear-wheel drive cars, the front wheels are set to a slight toe-in position. Technician B says the driving forces on a rear-wheel drive car tend to move the front wheels to a toe-in position. Who is correct?

All of these statements about excessive negative camber on the right-front wheel are true EXCEPT:

What effect do sagging front springs have when the steering linkage is positioned behind the steering axle of the front wheels?

All of these statements about negative caster are true EXCEPT:

Excessive toe-out on the right-rear wheel causes all of these problems EXCEPT:

Excessive toe-in on the left-rear wheel moves the thrust line in what direction compared to the geometric centerline of the vehicle?