Volvo excavators have a well-earned reputation for smooth, precise swing control. But that precision comes at a cost: when something goes wrong, the fault is often not obvious , and the swing motor is frequently blamed when it’s innocent. At Vikfin, we see this constantly on Volvo EC machines—EC210, EC240, EC290, EC360, and EC480 especially. This guide breaks down Volvo-specific swing motor failures , how their systems differ from other brands, and how to diagnose them withou