Practice Test GeeksNCCCO (National Commission for the Certification of Crane Operators) Practice Test
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Maintenance and Troubleshooting Flashcards

7 cards from real NCCCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Maintenance and Troubleshooting flashcards as text

  1. What is the correct procedure when a crane's engine oil pressure warning light illuminates during operation?

    Answer: Stop the crane immediately and shut down the engine

    A low oil pressure warning indicates potential imminent engine damage; immediate shutdown prevents catastrophic failure.

  2. When testing the anti-two-block (ATB) device, which result confirms the device is functioning correctly?

    Answer: Hoist motion stops before the block contacts the boom head

    A properly functioning ATB device must stop hoist-up motion before the block reaches the boom head sheaves.

  3. A crawler crane's track tension is too loose. What operational hazard does this create?

    Answer: Track can derail or de-track during travel or slewing

    Loose track tension allows the track to jump off the rollers and sprockets, causing a de-tracking event that can tip the crane.

  4. What does excessive heat on a crane's hydraulic return line filter indicate?

    Answer: A clogged filter element restricting flow

    A blocked return filter causes fluid to back up and heat to build as pressure drop across the clogged element increases.

  5. A technician finds corrosion pitting on the inner surface of a wire rope. What caused this condition?

    Answer: Internal moisture ingress from inadequate lubrication

    Internal corrosion pitting results from moisture penetrating the rope's core when internal lubrication is absent or depleted.

  6. During a pre-shift inspection, the operator notices the boom hoist holding brake releases but the boom does not lower. What is the most likely cause?

    Answer: A seized or sticking boom hoist motor control valve

    A stuck boom hoist control valve prevents fluid flow to the motor even when the brake is released, stopping boom movement.

  7. What is the purpose of performing a rated load test after major structural repairs on a crane?

    Answer: To verify the repaired structure can safely handle the rated capacity before returning to service

    A rated load test after structural repair confirms the repair restored full structural integrity before the crane is returned to service.