1873109930 Excavator 6WG1 Engine Water Pump

Part number 1873109930 is an original centrifugal cooling water pump specially designed by ISUZU (Isuzu) for 6WG1 series large displacement diesel engines. This component is the core cycle power source of the engine cooling system, and its universal model clearly covers Hitachi ultra large mining equipment equipped with 6WG1 engines, mainly including EX3600-5/6, EX2600-5, ZX850-5, ZX870-5G and other 80 ton or above ultra large hydraulic excavators and mining dump trucks. As the designated high flow water pump by the original factory, its installation flange, impeller form, and inlet and outlet orientation are perfectly matched with the front gear chamber and cooling circuit of the engine

This product is a heavy-duty centrifugal mechanical water pump, with a pump body made of high-strength cast iron or aluminum alloy precision casting. The front center is a drive shaft head with precision internal splines, used for direct connection with the engine gear system to ensure high torque transmission. The circular large-diameter interface on the side of the pump body is the main inlet or outlet pipe interface. It is equipped with high-strength composite materials or bronze impellers inside, which can provide high flow to meet the heat dissipation needs of high-power engines. The shaft seal adopts heavy-duty mechanical seal, which can withstand the corrosion of high-temperature antifreeze and high speed (usually at the same speed as the engine crankshaft) for a long time. Its design is specifically optimized for mining conditions with sustained heavy loads and high heat dissipation requirements, and is a key component in preventing engine high temperatures.

Installation specifications: 1 Cleaning and inspection: Before installation, the water pump installation surface and cooling pipeline on the engine body must be thoroughly rinsed with cleaning agent to ensure that there is no residual old gasket or rust. Check that the shaft of the new water pump (1873109930) rotates smoothly without any jamming. 2. Replacement of seals: It is necessary to use brand new original gaskets or O-rings and apply a small amount of sealant (if allowed). 3. Alignment and tightening: Place the water pump steadily in place, use a torque wrench, and tighten the installation bolts in the prescribed cross sequence and torque (usually 40-60 N · m) according to the maintenance manual, ensuring that the joint surface is uniformly compressed and sealed.