4709228 Excavator Compressor for ZX870-5A

Part number 4709228 is the original air conditioning compressor. Specially designed for air conditioning systems of ultra large hydraulic excavators such as Hitachi ZX870-5A. This compressor is also suitable for other ZX870 series models that use the same air conditioning platform, such as ZX870-5G, ZX870LC-5A, etc. As a core component of the original factory, its interface, pulley size, and engine accessory drive system are precisely matched

This product is a DENSO 10 cylinder or 6-cylinder rotary slant disc variable displacement compressor. The main body is a silver gray high-strength aluminum alloy casting shell, which is sturdy and lightweight. The black cast iron pulley at the front end is connected to the engine through an electromagnetic clutch to achieve power on/off. Multiple interfaces on the side are used to connect high/low pressure pipelines, pressure switches, and pressure relief valves. Its core function is to convert the mechanical energy of the engine into the pressure energy of the refrigerant, driving the entire air conditioning refrigeration cycle.

Inspection and troubleshooting: If the air conditioner does not cool at all, makes abnormal noises, the clutch does not engage, or the compressor housing leaks, this component needs to be inspected. Replacement timing: When the compressor is severely worn, bearings are damaged, shaft seal leaks, or electromagnetic clutch fails and cannot be repaired, it must be replaced as a whole. It is necessary to verify the equipment serial number and strictly use this original compressor (4709228) and designated oil and refrigerant, operated by professional air conditioning technicians.