Deck 17: Bodyframe Damage Measurement

Question 1

A(n) ____ is an imaginary flat surface parallel to the underbody of the vehicle at some fixed distance from the underbody.

A) datum line
B) control point
C) center plane
D) reference point

Answer 1

A

Question 2

While having a discussion, Technician A says that the most frequent order of occurrence of damage is: side-sway, sag, mash, diamond, and twist.Technician B says that sag and side-away frequently occur almost simultaneously.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 2

C

Question 3

____ is a condition where the cowl or another area of the vehicle is lower than normal.

A) Sag
B) Mash
C) Side-sway
D) Twist damage

Answer 3

A

Question 4

Frontal unibody damage results from a head-on collision with another object or vehicle.

Question 5

Rubber body mounts increase the effects of road shocks traveling from the frame to the body.

Question 6

The center plane, or centerline, divides the vehicle into two equal halves: the passenger side and the driver's side.

Question 7

Tram gauges are metal rods used to check for misalignment.

Question 8

The ____ used in manufacturing are not necessarily the same as the reference points the collision repair technician uses to measure the vehicle.

A) body center marks
B) control points
C) center planes
D) datum planes

Question 9

____ is a condition where one corner of the car is higher than normal; the opposite corner might be lower than normal.

A) Sag damage
B) Diamond damage
C) Mash damage
D) Twist damage

Question 10

____ is a condition where one side of the car has been moved to the rear or front causing the frame and/or body to be out of square.

A) Sag damage
B) Diamond damage
C) Mash damage
D) Twist damage

Question 11

The term reference points refer to the points, bolts, holes, and so on, used to give unibody and frame dimensions in body specification sheets.

Question 12

During a head-on collision with a barrier at 30 miles per hour (mph) or 48 kilometers per hour (km/h), the engine compartment compacts by about 30 to 40 percent of its length.

Question 13

Side-sway damage is a condition in which one corner of the car is higher than normal; the opposite corner may be lower than normal.

Question 14

____ is present when any section or frame member of the car is shorter than factory specifications.

A) Sag damage
B) Diamond damage
C) Mash damage
D) Twist damage

Question 15

To provide some control on secondary damage distortion and to provide a much safer compartment for passengers, a unibody vehicle is designed with crush zones or areas at the front and rear.

Question 16

____ is present when the front, center, or rear portion of the vehicle is pushed out of alignment by a side impact.

A) Sag
B) Twist damage
C) Side-sway
D) Mash damage

Question 17

Rear unibody damage occurs when the vehicle is moving backward and hits something or is hit by another vehicle from behind.

Question 18

Sag is present when any section or frame member of the vehicle is shorter than the factory specification.

Question 19

____ are special tools used to check specific frame and body points.

A) Center planes
B) Body center marks
C) Datum planes
D) Measurement gauges

Question 20

While having a discussion, Technician A says that sag damage usually occurs when the vehicle is struck off-center.Technician B says that diamond damage usually occurs when the vehicle is struck off-center.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 21

The most important rule in body/frame alignment is reverse direction and sequence.What does this mean?

Question 22

A sonic measuring system consists of all of the following EXCEPT:

A) a laser tram
B) a personal computer
C) a receiving unit
D) emitter targets

Question 23

A(n) ____ is handy because it helps you organize specs, actual measurements, and differences in good and actual measurements.

A) damage analysis form
B) universal analysis form
C) laser analysis form
D) pivot analysis form

Question 24

A(n) _________________________ uses rotating rods and pointers to measure vehicle damage.

Question 25

____ use sound waves as a means of measuring vehicle dimensions.

A) Dedicated bench measuring system
B) Robot arm measuring system
C) Sonic measuring systems
D) Computerized measuring system

Question 26

What information should the body technician have in order to determine how the collision occurred?

Question 27

A(n) ____ uses a movable arm to send electronic measurement data back to the computer.

A) dedicated bench measuring system
B) robot arm measuring system
C) sonic measuring systems
D) computerized measuring system

Question 28

Which of the following statements is LEAST-Likely true?

A) The term negative length refers to a measurement point that has been pushed in or is shorter than specs.
B) The term positive length refers to measurement point that is too long or has been forced out from center of vehicle.
C) The term negative width refers to measurement point that is pushed to center of vehicle or is too short.
D) The term positive height refers to measurement point that has been pushed down or is too low.

Question 29

A center hit on a vehicle that causes a misalignment is MOST-Likely referred to as:

A) strut
B) double side-sway
C) mash
D) sag

Question 30

A(n) ____ shows misalignment of the strut tower/upper body parts in relation to the centerline plane and datum plane.

A) datum plane
B) center plane
C) digital tram gauge
D) strut tower gauge

Question 31

How can you detect sag damage?

Question 32

The strut tower upper body gauge can be used to detect all of the following EXCEPT:

A) misalignment of the cowl
B) misalignment of the strut towers
C) twist damage
D) misalignment of a radiator support

Question 33

What symptoms should you look for when visually trying to determine the extent of impact damage?

Question 34

The system that uses beams of light and vehicle-mounted targets to measure the misalignment of vehicle control points is MOST-Likely:

A) a robot arm measuring system
B) a laser measuring system
C) a computerized laser measuring system
D) a sonic measuring systems

Question 35

Accurate damage assessment can be made at specific points on the body using a(n) ______________________________.

Question 36

Which of the following statements is LEAST-Likely true?

A) Laser measuring systems are extremely accurate when properly installed and used.
B) The word laser stands for "light amplification by stimulated emission of radiation."
C) A laser is good for measuring because it shoots out a perfectly straight beam of light.
D) A sonic measuring system is a tool designed to save time checking symmetry when measuring damage or straightening a vehicle body

Question 37

_________________________ involves using specialized tools and equipment to measure the location of reference points on a vehicle.

Question 38

____________________ is a condition in which one area, often the cowl area, is lower than normal.

Question 39

____________________ is a condition in which one rail or rocker is pushed either forward or rearward of the opposite rail or rocker.