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Difficulty: MediumTires, Wheels, and Rims Inspection

Under commercial motor vehicle safety inspection standards, welding repairs performed on damaged or cracked wheel rims are strictly prohibited.

Answer: Answer

Answer

True: Commercial motor vehicle safety regulations strictly prohibit any welding repairs on wheels and rims.
Commercial motor vehicle safety rules prohibit any welding repairs on wheel rims because welding compromises structural integrity and metal temper, creating imminent hazard of wheel separation under heavy payload and road stresses.

Step-by-Step Solution

1
Identify the vehicle component and the proposed maintenance action
The statement addresses welding repairs performed on cracked or damaged commercial wheel rims.
Vehicle inspection rules specify distinct criteria for wheel assemblies and structural integrity.
2
Evaluate the regulatory standard for wheel and rim modifications
Federal safety standards mandate that wheels and rims must not have welding repairs or unapproved structural modifications.
Heat from welding weakens rim alloys and induces micro-fractures, risking sudden rim failure or blowout during transit.
3
Determine the truth value of the regulatory prohibition
The statement correctly reflects the complete regulatory prohibition against rim welding.
Any rim with welded repairs is defective and constitutes an out-of-service condition.

Key Concept

Commercial Motor Vehicle Wheel and Rim Safety Standards
Estimated Time:45s
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Topics

Tires, Wheels, and Rims Inspection

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