1824100330 Original Excavator OIL PRESSURE SWITCH for ISUZU Engine

The original oil pressure switch part number 1824100330 is the core monitoring component of the lubrication system for ISUZU diesel engines. This switch is mainly suitable for excavators from brands such as Hitachi, Shengang, Sumitomo, Sany, XCMG, etc. equipped with ISUZU 4BG1, 6BG1, 6HK1, 6WG1 and other engine series, such as Hitachi ZX120, ZX200, ZX330, ZX470, Shengang SK200, SK350, Sumitomo SH350, SH480 and other models. Its common model is often labeled as 1824100330 series, which belongs to the normally open (NO) or normally closed (NC) oil pressure switch, usually installed near the main oil passage or oil filter seat of the engine block. When ordering, the complete engine model and serial number must be provided to ensure that its thread specifications (usually M10 × 1.0 or M12 × 1.5), electrical interfaces (single or double pin plugs), and pressure threshold (commonly 0.2-0.8 bar) are fully matched with the original system.

This product is an original oil pressure switch, which adopts a diaphragm or piston mechanical structure, and the pressure threshold is set internally by the pre tensioning force of the spring. When the oil pressure is lower than the set value (such as 0.3 bar), the switch contacts close (or open), sending a ground signal to the instrument panel or engine control unit (ECU), triggering the oil pressure warning light to turn on. The shell is usually made of zinc alloy die-casting or engineering plastic, and the internal seal is made of oil resistant rubber, which can withstand the harsh working conditions of engine high temperature (up to 150 ℃), high pressure (up to 10 bar) and continuous vibration. As an original component, its response speed, durability, and sealing performance are strictly matched with the lubrication system and electronic control unit of the ISUZU engine, ensuring timely alarm in case of abnormal oil pressure and protecting the engine from wear and tear.

Suggest checking the switch harness plug for looseness and oxidation every 500 working hours; Check for oil stains, leaks or cracks in the shell; Does the dashboard oil pressure warning light turn off within 3-5 seconds after startup. Fault diagnosis: If the alarm light stays on but the actual oil pressure is normal, a multimeter can be used to measure the resistance of the switch contacts (when turned off, the normally open type should be ∞, and the normally closed type should be 0 Ω; after starting, the state should be reversed). It is also possible to short-circuit the switch terminal and ground during idle. If the alarm light goes out, it indicates a fault in the switch itself. Key points for replacement: Stop the engine and cool it down before replacement; Use a dedicated sleeve during disassembly to avoid damaging the shell; Apply a small amount of sealant to the threaded part before installing the new switch, and tighten it to a torque of 15-25N · m; After installation, start the engine and observe if the warning light goes out normally. Preventive maintenance: It is recommended to check or replace the switch during engine overhaul every 8000-10000 hours, and always use original parts to ensure alarm accuracy and system reliability.