Why should the pintle hook's locking mechanism (the latch) be checked specifically for wear, not just visually confirmed as closed?

Pick an answer

1. The latch mechanism never wears out over normal use
2. The latch has no role in keeping the pintle connection secure
3. A worn latch might appear closed but not hold securely under the stress of driving
4. A visual check alone is always sufficient with no further testing ever needed at any point during the trip

Correct!

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