What is a hydraulic system's primary purpose and two maintenance considerations?

• A. Transmit power using fluid pressure; maintain fluid cleanliness and check for leaks, worn seals, and hose integrity.
• B. Store energy in springs; check for coil binding.
• C. Convert electrical energy into motion; monitor motor current.
• D. Provide cooling through air flow; replace filters monthly.

Answer: (A)

A hydraulic system’s main function is to transmit power by using fluid pressure. The fluid acts as a medium that carries force from the pump to actuators, allowing precise control and the ability to amplify force for lifting, pressing, or moving loads. For maintenance, focus on keeping the system reliable: first, maintain fluid cleanliness. Contaminants can wear components, clog passages, and reduce efficiency, so use proper filtration, follow recommended fluid type and cleanliness standards, and replace or filter fluid as needed. Second, inspect for leaks, worn seals, and hose integrity. Leaks drop system pressure and can be safety hazards, while worn seals and damaged hoses can lead to inefficiency and failure; regularly check fittings, hoses, and seals and replace them when they show wear or damage.