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Question

Difficulty: HardTires, Wheels, and Rims Inspection

Commercial motor vehicle safety standards permit re-welding a cracked steel wheel rim or disc assembly to restore its structural integrity, provided the repair does not exceed two inches in length and is certified prior to operation.

Answer: Answer

Answer

False. Welding repairs of any kind on commercial motor vehicle wheels and rims are strictly prohibited.
The statement is false because commercial motor vehicle safety standards strictly prohibit any welding repairs on wheel rims or disc wheels. Any crack, elongated bolt hole, or welded repair compromises the structural integrity of the wheel assembly, creating an extreme hazard of sudden wheel failure or wheel detachment while driving.

Step-by-Step Solution

1
Identify the core component and condition presented in the statement.
The statement proposes repairing a cracked steel wheel rim via certified welding if the crack is under two inches.
Pre-trip vehicle inspection criteria require evaluating whether specific physical defects can be repaired or require immediate equipment out-of-service replacement.
2
Apply commercial motor vehicle safety standards regarding wheel, rim, and disc integrity.
Federal Motor Carrier Safety Regulations and standard CDL inspection guidelines enforce a strict zero-tolerance prohibition on welded repairs for wheel and rim components.
Welding introduces severe thermal stress and weakens the tempered alloy, creating high risk for sudden explosive fracture under cyclic road stress and high payload pressures.
3
Evaluate the truth value of the statement.
The statement is False.
Any wheel rim or disc with cracks, welds, or structural damage must be condemned and replaced rather than welded.

Key Concept

Commercial Motor Vehicle Wheel and Rim Structural Integrity and Prohibition of Welded Repairs
Estimated Time:1m 0s
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Topics

Tires, Wheels, and Rims Inspection

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