NCCCO Service Truck Crane Operator

Question 1

A service truck crane (knuckle boom crane) is mounted on a truck bed. Before lifting, which setup step is most critical for safe operation?

Accepted Answer

Deploy and level the outriggers on stable ground and verify all outrigger pads are fully seated

Answer

Engage the truck's parking brake only — outriggers are optional for light lifts

Answer

Raise the truck body's dump box to counterbalance the crane load

Answer

Point the truck so the crane rotates away from the cab

Question 2

Under OSHA 1926 Subpart CC, which definition applies to a service truck crane with a rated capacity of 2,000 pounds or more?

Accepted Answer

It is covered equipment requiring operators to be certified or qualified per OSHA 1926.1427

Answer

It is exempt from Subpart CC because it is truck-mounted

Answer

It requires only a commercial driver's license with crane endorsement

Answer

It falls under Subpart N but not Subpart CC

Question 3

A service truck crane operator notices the truck is on a slight slope and the outrigger on the downhill side is not fully contacting the ground. What should the operator do?

Accepted Answer

Reposition the truck on level ground or pack the downhill outrigger with cribbing until all outriggers bear evenly before lifting

Answer

Proceed with the lift if the load is under 50% of rated capacity

Answer

Extend only the uphill outriggers to compensate for the slope

Answer

Use the truck's hydraulic suspension to level the platform

Question 4

What is the maximum permissible wire rope drum fleet angle for a service truck crane's hoisting drum?

Accepted Answer

1.5 to 2 degrees for smooth drums and up to 4 degrees for grooved drums, per manufacturer specifications

Answer

10 degrees maximum for all drum types

Answer

No limitation — fleet angle is not a safety-critical parameter

Answer

5 degrees maximum regardless of drum type

Question 5

A service truck crane is equipped with a load moment indicator (LMI). The LMI alarm sounds and a red light illuminates during a pick. What must the operator do?

Accepted Answer

Stop adding load immediately, lower the load to safe ground, and assess whether the pick exceeded rated capacity

Answer

Override the alarm using the bypass switch and complete the pick at reduced speed

Answer

Increase boom angle to decrease working radius and silence the alarm

Answer

Reduce load line speed and proceed carefully

Question 6

Which document is required to be in the cab of a service truck crane and must be legible at all times during operations?

Accepted Answer

Load chart and operator's manual for the specific crane make and model

Answer

The operator's NCCCO certification card only

Answer

The current OSHA inspection placard

Answer

The truck's commercial driver's license registration and insurance documents