4696643 Genuine Hitachi fuel filter for Hitachi excavator ZX200-3.

Part number 4696643 is a universal full-flow oil filter for Hitachi excavators, compatible with ZX200-1/ZX330-3, as well as ZX200-3/ZX210-3/ZX240-3/ZX270-3/ZX360-3 and other models, suitable for Isuzu 6BD1/6BG1/4HK1/6WG1 engines. With a thread specification of 1-1/2"-12UN, an outer diameter of 118mm, a height of 205mm, a filtration accuracy of 25μm, a rated working pressure of 4MPa, a maximum pressure resistance of 10MPa, a rated flow rate of 80L/min, and a bypass valve opening pressure of 1.4bar (20psi), it can efficiently filter impurities in the engine oil, ensure sufficient lubrication of moving parts such as the engine crankshaft and camshaft, and avoid abnormal wear.

intercept impurities above 25μm. The end caps and skeleton are made of high-strength engineering plastics, and the sealing ring is made of oil-resistant nitrile butadiene rubber (NBR), suitable for oil temperature environments from -30°C to 120°C, with excellent anti-aging and anti-leakage performance. The filter housing is formed by stamping cold-rolled steel plate, and its surface is treated with cathodic electrophoresis, with a rust prevention grade of C2. It is recommended to replace it every 250-500 hours under normal working conditions, and shorten to 150-250 hours under harsh working conditions (such as dust and heavy load). There is no blockage or abnormal opening of the bypass valve within the replacement cycle, which effectively extends the engine life and reduces the failure rate.

Adopting a spin-on design, it can be manually disassembled and replaced without special tools. Before replacement, the oil pressure should be released first (stop the engine for more than 15 minutes), the installation torque should be operated according to 20-25N·m. After replacement, check the oil level and start the engine to check for leakage. This filter can reduce the engine maintenance cost by more than 25%, reduce failures such as bearing bush wear and oil pump damage caused by impurities, improve the engine operating efficiency by about 10%, and ensure the stable power and safety of the excavator under working conditions such as earthwork, crushing and hoisting.