B3 Test: (Additional Questions)
Nonstructural Analysis and damage repair
1. Technician A says that an unknown plastic can be identified by international symbols or ISO
codes molded into the plastic parts. Technician B says that the body repair manual will give
information about the types of plastics used on a vehicle. Who is right? - ANS-Both A and B.
When possible, check the back of the bumper for ISO code and also refer to body repair
manuals for information on the different types of plastics used by vehicle manufacturers.
2. Technician A says that a repair plan will prevent backtracking. Technician B says that if the
estimate is not followed during the repair, the insurance company may not pay for the repair.
Who is right? - ANS-Both A and B. You should always follow a repair plan to prevent redoing
tasks on repairs. An estimate is used for ordering parts and is also a way to prepare a work
order that may be followed by a technician before repairs are started on a damaged vehicle.
Insurance companies may not pay for repairs that are not listed on an estimate. The insurance
company, however, should be contacted or informed of any additional damage or parts that
were not seen on the original estimate.
3. Technician A says that you should avoid running welding cables close to electronic displays
or computers. Technician B says that you should avoid touching bare metal contacts to keep
from getting a shock. Who is right? - ANS-A only. Welding cables need to be routed away from
electronic displays and computers. The electrical current from a welder can cause damage to
electronic displays and computers. If equipment is properly grounded, touching bare metal on a
vehicle will not cause shocks.
4. When destructive testing a weld, Technician A says that the weld must break loose before the
surrounding metal. Technician B says that the surrounding metal must break before the weld.
Who is right? - ANS-B only. If proper penetration is achieved during the MIG welding process,
metal on the surrounding area should tear away during a destruction test.
5. A magnet will stick to all of the following EXCEPT (A. high-strength steel, B. aluminum, C.
low-alloy steel, D. mild steel)? - ANS-Aluminum.
6. A vehicle is brought into the shop for repair. Technician 4 says that you should wash the
vehicle before sanding. Technician B says that you should clean the repair area with was and
grease remover before sanding. Who is right? - ANS-Both A and B. You should always wash the
vehicle prior to sanding with soap and water to remove water-soluble contaminants and then
use wax and grease remover to remove any remaining nonwater-soluble contaminants that can
be on the old painted surface. Contaminants can be forced into the surface and cause problems
at a later time.
,7. A damaged vehicle has unrelated suspension system wear. Technician A says that you
should notify the vehicle's owner. Technician B says that you should ignore the problem. Who is
right? - ANS-A only. Suspension wear should not be ignored. Occupant safety is always
important and should not be compromised.
8. Technician A uses a heat gun to reshape a flexible bumper cover. Technician B uses an open
flame torch to reshape a flexible bumper cover. Who is right? - ANS-A only. You can better
control the heat gun's temperature when reshaping a flexible bumper cover. An open flame
torch will melt or burn the flexible plastic being repaired
9. Spot welds need to be removed. Technician A says that you should use a spot weld cutter.
Technician B says that you should use a oxy-gas cutting torch. Who is right? - ANS-A only.
Remove spot welds successfully with a spot weld cutter to prevent damage to the secondary
panel underneath if it is not to be replaced.
10. A vehicle has a hatchback. Technician A says that the hatchback hinges may be bolted on.
Technician B says that the hatchback hinges may be welded on. Who is right? - ANS-Both A
and B. Depending on the construction of the vehicle and the manufacturer's assembly process,
hatchback hinges can be welded or bolted on.
11. A steel structural panel needs plug welds. What type of welder should be used (A.
resistance spot welder, B. oxyacetylene torch, C. MIG welder, D. TIG welder)? - ANS-MIG
Welder. To perform structural plug welds in a body shop, a MIG welder is the choice for proper
welds.
12. A wood grain decal needs to be removed with minimal damage to the paint underneath
Technician A says that you should use heat and a razor blade. Technician B says that you
should use water and a putty knife. Who is right? - ANS-A only. When trying to remove large
decals with minimal damage to the surrounding paint area, use a heat gun to soften the decal,
and then use a razor blade to remove the decal.
13. Technician A says plasma cutting causes too much distortion when cutting thin metals.
Technician B says plasma-are cutting is being replaced by oxyacetylene welding. Who is right? -
ANS-Neither A nor B. Plasma-arc cutting has replaced oxyacetylene cutting. Plasma-arc cutting
causes little distortion because of the use of compressed air working as a shielding gas around
an electrode, causing a tight focus of heat.
14. Weather stripping usually fits over (A. a drip rail, B. a pinch weld flange, C. screws, D.
clips)? - ANS-A pinch weld flange. Weather strips can be installed with clips, adhesives, or
screws. Weather strips can be installed on inside channels but are usually installed over vehicle
pinch welds.
15. What type of shielding gas is used when MiG welding (A. 25 percent argon, 75 percent
carbon dioxide, B. 25 percent carbon dioxide, 75 percent argon C. 40 percent argon, 60 percent
, carbo on dioxide, D. 40 percent carbon dioxide, 60 percent argon)? - ANS-25 percent carbon
dioxide, 75 percent argon. The shielding gas combination that is best suited for welding
automotive sheet metal is 75 percent arson and 25 percent carbon dioxide. The shielding gas
prevents contamination by the atmosphere.
16. When using MIG welding, as shown, what determines the proper arc length? (A. shielding
gas flow, B. wire thickness, C. penetration, D. arc voltage)? - ANS-Arc voltage. Arc voltage
determined the length of the arc. A continuous light hissing or cracking noise will be emitted
from the area being welded when the arc is set properly.
17. An SMC repair panel is to be beveled. Technician A says that you should bevel the entire
edge. Technician B says that you should leave a shoulder as part of the bevel. Who is right? -
ANS-A only. The entire panel should be beveled when making repairs to SMC plastic panels.
18. What type of anticorrosion protection is used between two adjacent surfaces (A. body filler,
B. seam sealer, C. anticorrosive compound, D. rust converter)? - ANS-Seam Sealer. Seam
sealers are used when scaling adjacent panels. They help prevent moisture from entering the
area, which can then form rust between the panels being sealed.
19. Manual glass sunroofs should be checked for all of the following EXCEPT (A. cracks, B.
warpage, C. leaks, D. broken hardware)? - ANS-Warpage. Glass sunroofs are not likely to warp
but rather crack, leak, and have broken hardware.
20. RRIM is a two-part polyurethane composite plastic. All of the following materials are used in
Part B of the mixture EXCEPT (A. isocyanate, B. reinforcing fibers, c. resins, D. a catalyst)? -
ANS-Isocyanate. Isocyanate is in Part A of RRIM polyurethane composite plastic. Catalyst,
Resins and reinforcing fibers are in part B of the two part RRIM material.
21. Technician A says that moldings may be installed with adhesives. Technician B says that
moldings may be installed with clips. Who is right? - ANS-Both A and B.
22. Hidden interior fasteners need to be removed. Technician A says to check the collision
estimating guide for fastener location. Technician B says to check the body repair manual for
fastener location. Who is right? - ANS-B only. Collision repair estimating guides do not list
fastener locations. Body repair manuals list fastener locations and removal guidelines for the
technician to follow.
23. Weld-through primer is applied to bare metal before welding to (A. prevent corrosion, B.
remove oil, C. enhance the welding operation, D. strengthen the weld joint)? - ANS-Prevent
Corrosion. To prevent corrosion on bare metal, apply weld-through primer on the areas that are
being welded. This will help prevent rust outs but only when additional coatings, such as paint
and undercoats, are also applied.
Nonstructural Analysis and damage repair
1. Technician A says that an unknown plastic can be identified by international symbols or ISO
codes molded into the plastic parts. Technician B says that the body repair manual will give
information about the types of plastics used on a vehicle. Who is right? - ANS-Both A and B.
When possible, check the back of the bumper for ISO code and also refer to body repair
manuals for information on the different types of plastics used by vehicle manufacturers.
2. Technician A says that a repair plan will prevent backtracking. Technician B says that if the
estimate is not followed during the repair, the insurance company may not pay for the repair.
Who is right? - ANS-Both A and B. You should always follow a repair plan to prevent redoing
tasks on repairs. An estimate is used for ordering parts and is also a way to prepare a work
order that may be followed by a technician before repairs are started on a damaged vehicle.
Insurance companies may not pay for repairs that are not listed on an estimate. The insurance
company, however, should be contacted or informed of any additional damage or parts that
were not seen on the original estimate.
3. Technician A says that you should avoid running welding cables close to electronic displays
or computers. Technician B says that you should avoid touching bare metal contacts to keep
from getting a shock. Who is right? - ANS-A only. Welding cables need to be routed away from
electronic displays and computers. The electrical current from a welder can cause damage to
electronic displays and computers. If equipment is properly grounded, touching bare metal on a
vehicle will not cause shocks.
4. When destructive testing a weld, Technician A says that the weld must break loose before the
surrounding metal. Technician B says that the surrounding metal must break before the weld.
Who is right? - ANS-B only. If proper penetration is achieved during the MIG welding process,
metal on the surrounding area should tear away during a destruction test.
5. A magnet will stick to all of the following EXCEPT (A. high-strength steel, B. aluminum, C.
low-alloy steel, D. mild steel)? - ANS-Aluminum.
6. A vehicle is brought into the shop for repair. Technician 4 says that you should wash the
vehicle before sanding. Technician B says that you should clean the repair area with was and
grease remover before sanding. Who is right? - ANS-Both A and B. You should always wash the
vehicle prior to sanding with soap and water to remove water-soluble contaminants and then
use wax and grease remover to remove any remaining nonwater-soluble contaminants that can
be on the old painted surface. Contaminants can be forced into the surface and cause problems
at a later time.
,7. A damaged vehicle has unrelated suspension system wear. Technician A says that you
should notify the vehicle's owner. Technician B says that you should ignore the problem. Who is
right? - ANS-A only. Suspension wear should not be ignored. Occupant safety is always
important and should not be compromised.
8. Technician A uses a heat gun to reshape a flexible bumper cover. Technician B uses an open
flame torch to reshape a flexible bumper cover. Who is right? - ANS-A only. You can better
control the heat gun's temperature when reshaping a flexible bumper cover. An open flame
torch will melt or burn the flexible plastic being repaired
9. Spot welds need to be removed. Technician A says that you should use a spot weld cutter.
Technician B says that you should use a oxy-gas cutting torch. Who is right? - ANS-A only.
Remove spot welds successfully with a spot weld cutter to prevent damage to the secondary
panel underneath if it is not to be replaced.
10. A vehicle has a hatchback. Technician A says that the hatchback hinges may be bolted on.
Technician B says that the hatchback hinges may be welded on. Who is right? - ANS-Both A
and B. Depending on the construction of the vehicle and the manufacturer's assembly process,
hatchback hinges can be welded or bolted on.
11. A steel structural panel needs plug welds. What type of welder should be used (A.
resistance spot welder, B. oxyacetylene torch, C. MIG welder, D. TIG welder)? - ANS-MIG
Welder. To perform structural plug welds in a body shop, a MIG welder is the choice for proper
welds.
12. A wood grain decal needs to be removed with minimal damage to the paint underneath
Technician A says that you should use heat and a razor blade. Technician B says that you
should use water and a putty knife. Who is right? - ANS-A only. When trying to remove large
decals with minimal damage to the surrounding paint area, use a heat gun to soften the decal,
and then use a razor blade to remove the decal.
13. Technician A says plasma cutting causes too much distortion when cutting thin metals.
Technician B says plasma-are cutting is being replaced by oxyacetylene welding. Who is right? -
ANS-Neither A nor B. Plasma-arc cutting has replaced oxyacetylene cutting. Plasma-arc cutting
causes little distortion because of the use of compressed air working as a shielding gas around
an electrode, causing a tight focus of heat.
14. Weather stripping usually fits over (A. a drip rail, B. a pinch weld flange, C. screws, D.
clips)? - ANS-A pinch weld flange. Weather strips can be installed with clips, adhesives, or
screws. Weather strips can be installed on inside channels but are usually installed over vehicle
pinch welds.
15. What type of shielding gas is used when MiG welding (A. 25 percent argon, 75 percent
carbon dioxide, B. 25 percent carbon dioxide, 75 percent argon C. 40 percent argon, 60 percent
, carbo on dioxide, D. 40 percent carbon dioxide, 60 percent argon)? - ANS-25 percent carbon
dioxide, 75 percent argon. The shielding gas combination that is best suited for welding
automotive sheet metal is 75 percent arson and 25 percent carbon dioxide. The shielding gas
prevents contamination by the atmosphere.
16. When using MIG welding, as shown, what determines the proper arc length? (A. shielding
gas flow, B. wire thickness, C. penetration, D. arc voltage)? - ANS-Arc voltage. Arc voltage
determined the length of the arc. A continuous light hissing or cracking noise will be emitted
from the area being welded when the arc is set properly.
17. An SMC repair panel is to be beveled. Technician A says that you should bevel the entire
edge. Technician B says that you should leave a shoulder as part of the bevel. Who is right? -
ANS-A only. The entire panel should be beveled when making repairs to SMC plastic panels.
18. What type of anticorrosion protection is used between two adjacent surfaces (A. body filler,
B. seam sealer, C. anticorrosive compound, D. rust converter)? - ANS-Seam Sealer. Seam
sealers are used when scaling adjacent panels. They help prevent moisture from entering the
area, which can then form rust between the panels being sealed.
19. Manual glass sunroofs should be checked for all of the following EXCEPT (A. cracks, B.
warpage, C. leaks, D. broken hardware)? - ANS-Warpage. Glass sunroofs are not likely to warp
but rather crack, leak, and have broken hardware.
20. RRIM is a two-part polyurethane composite plastic. All of the following materials are used in
Part B of the mixture EXCEPT (A. isocyanate, B. reinforcing fibers, c. resins, D. a catalyst)? -
ANS-Isocyanate. Isocyanate is in Part A of RRIM polyurethane composite plastic. Catalyst,
Resins and reinforcing fibers are in part B of the two part RRIM material.
21. Technician A says that moldings may be installed with adhesives. Technician B says that
moldings may be installed with clips. Who is right? - ANS-Both A and B.
22. Hidden interior fasteners need to be removed. Technician A says to check the collision
estimating guide for fastener location. Technician B says to check the body repair manual for
fastener location. Who is right? - ANS-B only. Collision repair estimating guides do not list
fastener locations. Body repair manuals list fastener locations and removal guidelines for the
technician to follow.
23. Weld-through primer is applied to bare metal before welding to (A. prevent corrosion, B.
remove oil, C. enhance the welding operation, D. strengthen the weld joint)? - ANS-Prevent
Corrosion. To prevent corrosion on bare metal, apply weld-through primer on the areas that are
being welded. This will help prevent rust outs but only when additional coatings, such as paint
and undercoats, are also applied.
