1157610061 Excavator Engine Priming Fuel Feed Pump for 6BG1

Part number 1157610061 is the original fuel charging pump provided by ISUZU (Isuzu) for the 6BG1 series diesel engine. This component is a critical component for establishing initial oil pressure in engine lubrication or fuel systems. Its universal models cover various mainstream medium-sized equipment equipped with 6BG1 engines, mainly including Hitachi ZX200-3, ZX220-3, ZX270-3, Komatsu PC200-8, PC220-8 and other 20-22 ton hydraulic excavators. As the core fuel supply unit of the original factory, its installation interface and driving method are perfectly matched with the engine cylinder block or gear chamber.

This product is a gear or blade type mechanical pump, with a silver gray precision machined metal shell as the main body, presenting an industrial texture. One end is a circular end cap with multiple circular sealing grooves, ensuring high-pressure sealing with the engine mounting surface. The black component connected at the other end is usually a drive coupling, gear, or blade rotor. Its core function is to be driven by the engine, suck in oil from the tank or oil pan and pressurize it before delivering it to the system pipeline, providing the necessary initial pressure and flow for engine start-up or specific circuits. The material is sturdy and can withstand long-term immersion in engine oil or diesel and system working pressure.

Replacement timing: When there is difficulty starting the engine, slow initial oil pressure establishment, or continuous leakage at the pump body, the pump should be checked. Installation specifications: 1 Release pressure: Ensure that there is no pressure in the relevant system before operation. 2. Cleaning: Thoroughly clean the engine mounting surface. 3. Replace seals: During installation, a brand new sealing ring must be used and a small amount of engine oil must be applied to the groove. 4. Alignment tightening: Install the pump smoothly, ensuring that the drive head is aligned with the engine shaft, and tighten the fixing bolts in diagonal order and with the specified torque (usually 20-30 N · m).