4DA1 Series oil filter and oil cooler with bypass-type filter Battery Indicator light Oil pressure switch Vertical cylinder oil gallery Oil filter and cooler Regulator valve Idler gear shaft Camshaft bearing Vacuum pump Bypass filter Full-flow oil filter Safety valve Oil nozzle Rocker bearing Oil pipe Crankshaft shaft Oil cooler Safety valve Rocker Piston arm Timing gear Connecting rod bearing Oil pump Relief valve Oil strainer Oil pan ① Opening pressure of relief valve at oil filter: 430-470kPa ② Opening pressure of safety valve at oil filter: 960-100kPa The lubrication system for 4DA1 Series engine is full-flow type.
The lubricant flows from the oil pump to the vertical cylinder oil gallery through oil cooler and oil filter pump (the replaceable oil filter is equipped on the oil filter).And then, the lubricant is delivered from the vertical cylinder oil gallery to the main parts of engine. 19