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

Technician A says a variation of 4 degrees between the right and left SAI angles is satisfactory. Technician B says the average SAI angle on a MacPherson strut front suspension is 12 degrees to 18 degrees. Who is correct?

Frame measurement is being discussed. Technician A says diagonal frame measurements should cross each other at the frame centerline. Technician B says the distance from the frame centerline to the same point on each side of the frame should be equal. Who is correct?

Technician A says frame side sway causes one corner of the vehicle to be higher than the other corners. Technician B says frame side sway causes the wheelbase to be unequal on the two sides of the vehicle. Who is correct?

All of these statements about frame buckle are true EXCEPT:

SAI reduces the need for excessive positive camber.

Steering wheel kickback is reduced when the SAI line intersects the true vertical tire and wheel centerline at the road surface.

How does SAI help to return the steering wheel to the center position after a turn?

A vehicle with a rack and pinion steering system has a complaint of tire squealing when cornering.  The most likely cause of this problem is:

Vehicle directional stability is provided by proper rear wheel tracking and wheelbase.

What is included angle?

Rear axle offset may be caused by:

What  are the four main purposes of a vehicle frame?

During a turn, the inside front wheel turns at what type of angle compared to the outboard wheel?

Technician A says in a dedicated bench system, the dedicated fixtures are bolted to the bench. Technician B says the holes in the dedicated fixtures must be aligned with the matching holes in the unitized body. Who is correct?

The vertical side of the frame is called the web.

Severe steering pull during hard braking may be caused by unequal SAI angles on the two sides of the front suspension.

Define steering axis inclination.

Describe front wheel setback.

What are the benefits of laser welding an aluminum frame?

Negative camber is present when the camber line is tilted outward in relation to the true vertical centerline of the tire and wheel.