NCCCO (National Commission for the Certification of Crane Operators) Practice Test
NCCCO - National Commission for the Certification of Crane Operators NCCCO Maintenance and Troubleshooting 2
What is the purpose of a crane's hydraulic oil cooler, and what symptoms indicate it may not be functioning properly?
Select your answer
A
The oil cooler heats hydraulic fluid in cold weather; symptoms of failure include slow boom extension
B
The oil cooler removes heat from hydraulic fluid; symptoms of failure include overheating, reduced system pressure, and sluggish operation
C
The oil cooler filters contaminants from hydraulic fluid; symptoms of failure include unusual hydraulic sounds and jerky motion
D
The oil cooler stores reserve hydraulic fluid; low fluid warning lights indicate cooler failure
Hint