CPO Hydraulic Systems & Controls Flashcards
6 cards from real CPO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPO Hydraulic Systems & Controls flashcards as text
What is the primary function of the hydraulic system in a concrete pump?
Answer: To transmit power and control pump movements via pressurized fluid
Hydraulic systems transmit power through pressurized fluid to operate the pump pistons, boom, and other moving components.
Which hydraulic component is responsible for converting mechanical energy into hydraulic pressure?
Answer: Hydraulic pump
A hydraulic pump converts mechanical energy (from the engine) into hydraulic pressure by moving fluid through the system.
What does abnormally high hydraulic fluid temperature typically indicate?
Answer: Excessive load, restriction, or low fluid level causing overheating
High hydraulic fluid temperature signals problems such as overloading, clogged filters, low fluid, or a malfunctioning cooler.
How often should hydraulic fluid levels be checked on a concrete pump?
Answer: Before each work shift
Hydraulic fluid should be checked before each work shift to ensure safe operation and catch leaks early.
What is the purpose of a pressure relief valve in a hydraulic system?
Answer: To prevent system pressure from exceeding safe limits
A pressure relief valve opens when system pressure exceeds a set limit, protecting components from damage due to overpressure.
Which condition would most likely cause a hydraulic cylinder to drift or move unintentionally?
Answer: Worn or damaged internal seals
Worn or damaged internal seals allow fluid to bypass the cylinder piston, causing unintended movement or drift.