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LUBRICATION DESCRIPTION The lubrication system is a full-flow filtration, pressure feed type. The oil pump is mounted in the ladder frame and OPERATION Engine oil drawn up through the pickup tube and is pressurized by the oil pump and routed through the full-flow filter DIAGNOSIS AND TESTING CHECKING ENGINE OIL PRESSURE 1. Disconnect and remove oil pressure switch. (Refer to 9 - ENGINE/LUBRICATION/OIL PRESSURE SENSOR/ SWITCH - REMOVAL) 2. Install Special Tools C-3292 Gauge with 8406 Adaptor fitting. 3. Start engine and record oil pressure. Refer to Specifications for correct oil pressure requirements. (Refer to 9 - ENGINE - SPECIFICATIONS) CAUTION: If oil pressure is 0 at idle, do not perform the 3000 RPM test 4. If oil pressure is 0 at idle, shut off engine. check for pressure relief valve stuck open, a clogged oil pick-up screen or a damaged oil pick-up tube O-ring. 5. Remove oil pan and inspect for debris. 6. Remove pressure relief valve and inspect, if damaged replace pressure relief valve. 7. If pressure relief valve is ok, replace balance shaft module assembly. 8. After test is complete, remove test gauge and fitting. 9. Install oil pressure switch and connector. (Refer to 9 - ENGINE/LUBRICATION/OIL PRESSURE SENSOR/ SWITCH - INSTALLATION). PM ENGINE 2.4L WORLD 9 - 1735 |