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Difficulty: MediumEngine Compartment Inspection

When inspecting engine drive belts during a pre-trip vehicle inspection, a belt must not deflect more than 3/4 inch when pressed firmly at the center of the belt span.

Answer: Answer

Answer

True
According to standard commercial vehicle inspection guidelines, drive belts must be checked for proper tension, which is defined as having no more than 1/2 to 3/4 inch of deflection when pressed at the center of the span, in addition to being free of cracks, splits, or frayed fibers.

Step-by-Step Solution

1
Identify the standard commercial vehicle tolerance for drive belt deflection during an engine compartment inspection.
Standard CDL pre-trip inspection procedures specify that drive belts must have snug tension with no more than 1/2 to 3/4 inch of free play.
Proper belt tension ensures reliable torque transfer to essential accessories including the water pump, alternator, and air compressor.
2
Evaluate the statement against the established threshold.
The statement specifies the 3/4 inch upper deflection limit accurately.
Because the statement aligns precisely with CDL safety and inspection regulations, it is evaluated as true.

Key Concept

Engine Drive Belt Play and Tension Inspection Standards
Estimated Time:45s
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Topics

Engine Compartment Inspection

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