Service Truck Crane Operator Flashcards
6 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 6 Service Truck Crane Operator flashcards as text
Why is it dangerous to operate a service truck crane with the truck on a side slope greater than the manufacturer's specification?
Answer: Side slopes shift the combined center of gravity toward the downhill side, reducing stability and potentially invalidating load chart capacities in all directions
Side slopes shift the combined crane-and-truck center of gravity toward the low side, reducing the stability margin in the downhill direction and invalidating load chart values that assume level operation.
What must an operator do before using a remote control unit to operate a service truck crane?
Answer: Test all remote control functions, verify emergency stop function works, and ensure the remote and crane are properly paired and responding correctly
Before using remote control operation, the operator must verify that all control functions respond correctly, the emergency stop is functional, and that the remote-crane communication is reliable to prevent unintended crane movements.
What action must be taken when a service truck crane is to be left unattended at a job site overnight?
Answer: The boom must be fully retracted and lowered to its secured transport position, PTO disengaged, key removed, and the vehicle secured against unauthorized use
Unattended cranes must be secured against unauthorized use with the boom in the transport configuration, PTO disengaged, ignition key removed, and vehicle in a secure position to prevent movement.
What is the correct response if hydraulic fluid is observed leaking from a crane hose during operations?
Answer: Stop crane operations immediately, lower the load to the ground if safe to do so, and lock out the crane until the hose is inspected and repaired
A hydraulic hose leak requires immediate cessation of crane operations because hose failure can cause sudden loss of load control, and high-pressure hydraulic fluid injection injuries are a serious medical emergency.
When is it permissible to use the crane's hydraulic system as a means to hold a load in position while workers are beneath it?
Answer: It is never permissible to use hydraulic pressure alone to support a load over workers; mechanical blocking or lowering the load to the ground is required
Hydraulic systems can fail suddenly due to hose burst, seal failure, or valve malfunction, making them unreliable for holding loads over workers; mechanical blocking or ground contact is required when workers must work beneath suspended loads.
What is the purpose of the load chart boom extension limitations related to the jib or extensions on a knuckleboom crane?
Answer: Extension limitations establish the maximum configurations for which structural integrity and stability have been verified, preventing operation in conditions beyond the manufacturer's tested design envelope
Extension limitations define the absolute boundary of the manufacturer's tested and certified operating envelope; any configuration beyond these limits places the crane in structurally unverified territory where failure modes are unknown.