CPO CPO Hydraulic Systems & Controls

Question 1

What is the primary function of the hydraulic system in a concrete pump?

Accepted Answer

To transmit power and control pump movements via pressurized fluid

Answer

To cool the engine

Answer

To lubricate the boom joints

Answer

To filter concrete mix

Question 2

Which hydraulic component is responsible for converting mechanical energy into hydraulic pressure?

Accepted Answer

Hydraulic pump

Answer

Hydraulic cylinder

Answer

Hydraulic motor

Answer

Hydraulic accumulator

Question 3

What does abnormally high hydraulic fluid temperature typically indicate?

Accepted Answer

Excessive load, restriction, or low fluid level causing overheating

Answer

System is operating at peak efficiency

Answer

Hydraulic fluid is over-pressurized

Answer

The boom is fully extended

Question 4

How often should hydraulic fluid levels be checked on a concrete pump?

Accepted Answer

Before each work shift

Answer

Once a month

Answer

Only when a leak is suspected

Answer

Every 500 operating hours

Question 5

What is the purpose of a pressure relief valve in a hydraulic system?

Accepted Answer

To prevent system pressure from exceeding safe limits

Answer

To increase output flow

Answer

To filter contaminants from hydraulic fluid

Answer

To regulate engine RPM

Question 6

Which condition would most likely cause a hydraulic cylinder to drift or move unintentionally?

Accepted Answer

Worn or damaged internal seals

Answer

Low engine idle speed

Answer

Excess hydraulic fluid

Answer

High ambient temperature