ASE B-5 Mechanical/Electrical
A vehicle with a MacPherson strut suspension is damaged in a collision impact to the right front. An
analysis with a frame/body measuring system shows the top of the strut tower was moved toward the
vehicle centerline by 14mm. This damage would result in change to which of the following alignment
angles?
A. front wheel toe
B. caster
C. camber
D. SAI - C. camber
Moving the top of the strut directly inboard (toward the vehicle centerline) without moving it any other
direction will affect the camber angle and cause the top of the wheel to lean inward. This is negative
camber. Assuming the camber angle only is affected and the top of the strut does not move forward or
back in the impact, no other angle would be affected.
The right disc brake caliper and pads must be replaced during collision repairs. What other actions must
take place?
A. polish the rotor before installation
B. replace he brake pads on the left side to maintain equal braking force
C. measure the brake pads on the left side to see if they are serviceable
D. replace the same components on the left side - B
The subframe should never be sectioned, and should rarely, if ever, be worked. It is typically a bolt-on
part that does not lend itself to traditional straightening methods. Vehicle manufacturers recommend
replacement.
The first step in bleeding brakes is to:
,A. check the parking brake adjustment
B. check the master cylinder fluid level
C. start the engine and pump the brakes
D. start the wheel farthest from the master cylinder - B. check the master cylinder fluid level
The fluid level will have to be monitored as it is removed during the process, so always start with a full
reservoir. Bleeding the farthest wheel first is good practice, but not the first thing to do.
Technician A says that negative camber is the tilt of the tire toward the front of the vehicle. Technician B
says that negative camber means that the top of the tire is tipped in toward the centerline of the vehicle.
Who is right?
A, B, Both, or Neither - Technician B only
Camber is the inward or outward tip of the tire, as seen from the front of the vehicle. When a wheel
sustains an impact from the side, the camber is frequently affected.
During A/C refrigerant recovery, 1 oz of oil has been recovered from the system. Which of these is the
correct procedure?
A. return the oil to the system
B. replace the oil with new oil
C. ignore such a small amount of new oil
D. change all the oil in the system - B. replace the oil with new oil
New oil should be used to restore the proper amount. Also replace additional amounts for any
components replaced.
A vehicle has positive caster on the right front wheel and zero caster on the front left wheel. Technician A
says this will cause the vehicle to pull left. Technician B says the vehicle will pull to the right. Who is
right?
, A, B, Both, or Neither - A. Technician A only
The vehicle will always pull to the side with the least amount of positive caster, or the greatest amount
of negative caster.
Caster on one side of a unibody vehicle is out of specification. The LEAST likely cause is:
A. a misaligned crossmember
B. a bent idler arm
C. a damaged lower control arm
D. a damaged strut rod - B. a bent idler arm
A bent idler arm is the least likely problem. All the other choices could cause a caster problem.
After repairing a vehicle, it is found that camber is out of spec on one side of the vehicle. Technician A
says that there might be suspension mounting locations out of spec. Technician B says that before
adjusting camber, SAI and included angle should be checked and compared side-to-side. Who is right?
A, B, Both, or Neither - Both Technician A and B.
A number of conditions can cause a camber reading to be off, such as damaged parts or a distorted
suspension mounting location. A visual examination of the parts is all that's needed in cases of severe
damage. However, the only way to be sure is to check both SAI and included angle readings to determine
where the damage is.
A driver's side airbag was cut during a collision but did not deploy. What is the proper action?
A. use plastic repair adhesive to repair the cut and refinish the bag
B. return the bag to the manufacturer for recycling
C. replace the bag with an OEM part, deploy the old bag before disposal
A vehicle with a MacPherson strut suspension is damaged in a collision impact to the right front. An
analysis with a frame/body measuring system shows the top of the strut tower was moved toward the
vehicle centerline by 14mm. This damage would result in change to which of the following alignment
angles?
A. front wheel toe
B. caster
C. camber
D. SAI - C. camber
Moving the top of the strut directly inboard (toward the vehicle centerline) without moving it any other
direction will affect the camber angle and cause the top of the wheel to lean inward. This is negative
camber. Assuming the camber angle only is affected and the top of the strut does not move forward or
back in the impact, no other angle would be affected.
The right disc brake caliper and pads must be replaced during collision repairs. What other actions must
take place?
A. polish the rotor before installation
B. replace he brake pads on the left side to maintain equal braking force
C. measure the brake pads on the left side to see if they are serviceable
D. replace the same components on the left side - B
The subframe should never be sectioned, and should rarely, if ever, be worked. It is typically a bolt-on
part that does not lend itself to traditional straightening methods. Vehicle manufacturers recommend
replacement.
The first step in bleeding brakes is to:
,A. check the parking brake adjustment
B. check the master cylinder fluid level
C. start the engine and pump the brakes
D. start the wheel farthest from the master cylinder - B. check the master cylinder fluid level
The fluid level will have to be monitored as it is removed during the process, so always start with a full
reservoir. Bleeding the farthest wheel first is good practice, but not the first thing to do.
Technician A says that negative camber is the tilt of the tire toward the front of the vehicle. Technician B
says that negative camber means that the top of the tire is tipped in toward the centerline of the vehicle.
Who is right?
A, B, Both, or Neither - Technician B only
Camber is the inward or outward tip of the tire, as seen from the front of the vehicle. When a wheel
sustains an impact from the side, the camber is frequently affected.
During A/C refrigerant recovery, 1 oz of oil has been recovered from the system. Which of these is the
correct procedure?
A. return the oil to the system
B. replace the oil with new oil
C. ignore such a small amount of new oil
D. change all the oil in the system - B. replace the oil with new oil
New oil should be used to restore the proper amount. Also replace additional amounts for any
components replaced.
A vehicle has positive caster on the right front wheel and zero caster on the front left wheel. Technician A
says this will cause the vehicle to pull left. Technician B says the vehicle will pull to the right. Who is
right?
, A, B, Both, or Neither - A. Technician A only
The vehicle will always pull to the side with the least amount of positive caster, or the greatest amount
of negative caster.
Caster on one side of a unibody vehicle is out of specification. The LEAST likely cause is:
A. a misaligned crossmember
B. a bent idler arm
C. a damaged lower control arm
D. a damaged strut rod - B. a bent idler arm
A bent idler arm is the least likely problem. All the other choices could cause a caster problem.
After repairing a vehicle, it is found that camber is out of spec on one side of the vehicle. Technician A
says that there might be suspension mounting locations out of spec. Technician B says that before
adjusting camber, SAI and included angle should be checked and compared side-to-side. Who is right?
A, B, Both, or Neither - Both Technician A and B.
A number of conditions can cause a camber reading to be off, such as damaged parts or a distorted
suspension mounting location. A visual examination of the parts is all that's needed in cases of severe
damage. However, the only way to be sure is to check both SAI and included angle readings to determine
where the damage is.
A driver's side airbag was cut during a collision but did not deploy. What is the proper action?
A. use plastic repair adhesive to repair the cut and refinish the bag
B. return the bag to the manufacturer for recycling
C. replace the bag with an OEM part, deploy the old bag before disposal
