What could cause erratic action on the MAAS trailer hydraulic system?

Air in the hydraulic system can lead to erratic action because hydraulic systems rely on fluid to transmit power effectively. When air enters the system, it compresses under pressure, leading to a phenomenon known as "cavitations." This causes inconsistent operation as the hydraulic fluid can no longer transmit force smoothly. Instead of a steady flow and consistent power delivery, the presence of air creates pockets that lead to fluctuations in the system's response, making it act erratically.

Other factors such as low hydraulic fluid viscosity, external contamination, and poor electrical connections might contribute to issues within a hydraulic system but are not as directly responsible for causing erratic behavior as air within the system. Low viscosity can cause fluid leakages or inadequate lubrication but not necessarily erratic movements. External contamination typically leads to system wear and tear or blockage rather than erratic action. Poor electrical connections can result in operational failures or performance issues, but these tend to manifest differently than the erratic behavior caused by entrained air in hydraulic fluid circuits.