A: Slow machine cycles across all functions, a loud metallic whining sound, and metallic flakes in the return filters mean internal pump components are failing.
A: Clean the entire hydraulic reservoir to remove old debris. Fill the pump housing with clean oil via the case drain port before cranking the engine to prevent dry-start failure.
A: Yes, RITO YB60001209 matches the exact regulatory configurations and port locations of the HPV145 model used on specified ZX330-5G excavators.






















