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Autobody Technician Year 4 > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

On BOF Vehicles, repair the ______ first.

A

Frame

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2
Q 
Unibody vehicles are usually damaged in the following sequence.
1.
2.
3.
4.
5.
A 
Sag
Mash
Sidesway
Twist
Diamond
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3
Q

Diamond damage turns the frame into a parallelogram (out of square rectangle. It is found predominantly in ___-____ vehicles and rarely in ______.

A

Full-frame

Unibodies

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4
Q

A parallel to _____ measurement shows length and height dimensions at the same time.

A

Datum

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5
Q

The full tread depth of a new tire is __mm deep.

A

10mm

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6
Q

Mash is measured with a _____ gauge.

A

Tram

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7
Q

During a head-on collision with a barrier at 50 KM/H, the engine compartment compacts by __ - __% of its length, whereas the passenger compartment is compacted by only _ to _%.

A

30 to 40%

1 to 2 %

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8
Q

If a vehicle is _________, the dimensions on at least one of the planes will be different from one of the vehicle to the other.

A

Asymmetrical

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9
Q

_____-______ vehicles are a combination of BOF and unibody designs.

A

Semi-Unitized

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10
Q

In a _________ vehicle, the body parts of the vehicle are welded together to create structural support to the entire vehicle.

A

Unibody

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11
Q

Measure each point from ____ other points.

A

Two

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12
Q

All points other than control points are referred to as ______ points.

A

Measuring

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13
Q

__________ means that all the dimensions in all three planes on one side of the vehicle are equal to the dimensions on the other.

A

Symmetrical

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14
Q

Body ____ planes are used to determine length measurements on a vehicle.

A

Zero

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15
Q

The three-dimensional measurements required for the set-up of this type of measuring system are available from specification sheets or manufacturer _____ sheets.

A

Data

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16
Q

The ______ plane is used as a reference for all vertical body measurements.

A

Datum

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17
Q

A ______ ______ design does not require a welded roof panel and quarter panels to help create structural integrity.

A

Space Frame

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18
Q

In the first microseconds of impact, a shock wave attempts to shorten the structure and causes vertical ___ or ______ in the central structure.

A

Sag or Bending

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19
Q

Zone 3 _______ ______

A

Mechanical Damage

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20
Q

The dimensions of both front and rear sections must be checked during the pulling of double ________damage.

A

Sidesway

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21
Q

All measuring locate points on a vehicle by referencing them to three planes: _____, _____ and ______.

A

Length
Width
Height

22
Q

Zone 1 ______ _______

A

Direct Damage

23
Q

Zone 4 _________ and _________ compartment

A

Passenger and Luggage Compartment

24
Q

To correct collision damage, pull or push the damaged area in the _________ direction of impact.

A

Opposite

25
Q

If the center section is damaged it must be repaired ____.

A

First

26
Q

The first damage condition to look for is _______

A

twist

27
Q

The extent of damage from a collision depends upon the vehicles ______, _____, area of impact and the ____ of impact.

A

Weight, Speed, Source

28
Q

As the collision continues, visible crushing occurs at the point of impact. Impact energy is absorbed in the deforming structure, which helps the passenger compartment. Remote areas might buckle, tear or pull loose. This is called ______.

A

Mash

29
Q

_______ damage is caused by the impact being off center. This will leave the frame out of square and, in a unibody, produces visible wrinkles and buckles in the floor pan and trunk.

A

Diamond Damage

30
Q

_______ to ______ is a direct measurement between two points. It is a length or or width measurement only.

A

Point to Point

31
Q

______ ______ are locations where the factory installs basic frame members into jigs to meet manufacturer tolerances.

A

Control Points

32
Q

Zone 2 ______ ______

A

Secondary Damage

33
Q

The passanger compartment area is designed to be rigid enough to preserve the occupants; this is known as design safety or ______ safety.

A

Passive

34
Q

Deformation of the body side structure can usually be determined by door _________.

A

Alignment

35
Q

Vehicle ________ manuals were created to provide you with the most complete specifications available.

A

Dimension

36
Q

On unibody vehicles, the _____ and _____ body are repaired as a unit.

A

Under

Upper

37
Q

The _____ plane is used to determine width measurements on a vehicle.

A

Centre

38
Q

Zone 5 _________ _____

A

Exterior Trim

39
Q

Gauges should be used in minimum sets of _____, but ____ is optimal.

A

Three

Four

40
Q

Even if the initial impact is dead centre, secondary impact can introduce torsional loads that cause a general twisting of the structure. Unibody structural twisting would be the _____ collision event; whereas, in a BOF, it would be the last. This is known as _____.

A

Fourth

Twist

41
Q

___ often occurs at the front suspension mounting cross member.

A

Sag

42
Q 
BOF vehicles are usually damaged in the following sequence.
1.
2.
3.
4.
5.
A 
Sidesway
Sag
Mash
Diamond
Twist
43
Q

It is necessary to exercise caution when the vehicle is lifted up, since the fit of the doors will be affected by flexing of the body, this is known as _________.

A

Deflection

44
Q

In a well designed unibody structure, impact forces reaching the passenger compartment cause the side structure to bow out (never in) away from the passengers distorting side rails and door openings. This is called ______.

A

Widening

45
Q

The tolerances of critical manufacturing must be held to +- _mm (1/8”)

A

3mm

46
Q

The four major control points on each side of the vehicle are located at the front frame ____, front _____ boxes, rear _____ boxes and rear frame _____. The additional fifth control points located in the upper body are the ____ towers.

A

Frame horns
Torque boxes
Strut

47
Q

________ is lateral (side to side) misalignment of any of the three sections of a vehicle.

A

Sidesway

48
Q

The ______ plane is used to determine height measurements on a vehicle.

A

Datum

49
Q

_____ _____ _____ construction means the heavy gauge steel frame or chassis of the vehicle is separate from the body.

A

Body Over Frame (BOF)

50
Q

The tram gauge can be used with a third pointer installed. This is known as a _______ gauge.

A

Tracking

Autobody Technician Year 4 (4 decks)

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