Free practice test

Heavy Equipment Mechanic Practice Test

Check what you know about the heavy equipment mechanic job with 15 free questions and instant explanations.

Updated By the Career Education Institute Curriculum Team
About this practice test

15 multiple-choice questions on heavy equipment mechanic knowledge, safety and vocabulary. Submit to see your score and explanations, or open any question’s answer as you go. Nothing is saved or shared.

Question 1 of 15A hydraulic relief valve:
Show answer

Answer: Limits maximum pressure. Relief valves protect against overpressure.

Question 2 of 15How should you check for a pinhole hydraulic leak?
Show answer

Answer: With cardboard. Use cardboard to avoid injection injuries.

Question 3 of 15Undercarriage parts include:
Show answer

Answer: Track rollers and idlers. Tracks, rollers, idlers and sprockets.

Question 4 of 15Fluid analysis helps detect:
Show answer

Answer: Internal component wear. Oil samples reveal wear metals.

Question 5 of 15Before working under a raised boom you must:
Show answer

Answer: Block or support it. Raised components must be supported.

Question 6 of 15Which term matches this definition: “A diagnostic code stored by a machine’s computer.”
Show answer

Answer: Fault code. Fault code: A diagnostic code stored by a machine’s computer.

Question 7 of 15What does “Powershift transmission” mean?
Show answer

Answer: A transmission that shifts under load.. Powershift transmission: A transmission that shifts under load.

Question 8 of 15Which term matches this definition: “Electronic control module.”
Show answer

Answer: ECM. ECM: Electronic control module.

Question 9 of 15What does “Swing drive” mean?
Show answer

Answer: The system that rotates an excavator’s upper structure.. Swing drive: The system that rotates an excavator’s upper structure.

Question 10 of 15Which term matches this definition: “Low-pressure hydraulic controls that operate main valves.”
Show answer

Answer: Pilot controls. Pilot controls: Low-pressure hydraulic controls that operate main valves.

Question 11 of 15What does “Undercarriage” mean?
Show answer

Answer: The track, rollers, idlers and sprockets on tracked machines.. Undercarriage: The track, rollers, idlers and sprockets on tracked machines.

Question 12 of 15Which term matches this definition: “Diesel exhaust fluid used in emissions systems.”
Show answer

Answer: DEF. DEF: Diesel exhaust fluid used in emissions systems.

Question 13 of 15What does “Cylinder” mean?
Show answer

Answer: A component that converts hydraulic pressure into straight-line motion.. Cylinder: A component that converts hydraulic pressure into straight-line motion.

Question 14 of 15Which term matches this definition: “A system that uses pressurized fluid to move cylinders and motors.”
Show answer

Answer: Hydraulic system. Hydraulic system: A system that uses pressurized fluid to move cylinders and motors.

Question 15 of 15What does “Final drive” mean?
Show answer

Answer: The gear reduction that powers tracks or wheels.. Final drive: The gear reduction that powers tracks or wheels.

How to study

View training