SOLENOID 4N4316 - Caterpillar

Specifications
Table 1
Minimum Oil Pressure (Hot) 34 kPa (5 psi) at 1,000 rpm
103 kPa (15 psi) at 2,000 rpm Test Procedure
With the engine on a level surface, allow for adequate drain down time and measure for the proper engine oil level. Add the recommended grade engine oil and fill the crankcase until the oil level measures "FULL" on the oil level indicator. Note: Too high of an oil level will cause aeration within the oil.
Bring the engine to operating conditions and verify that there is low or no oil pressure with the gauge panel oil pressure gauge or oil indicator light. Listen for a noisy valve train or knocking noise.
Inspect for the following:
Engine oil diluted by moisture or unburned fuel mixtures
Improper engine oil viscosity for the expected conditions
Incorrect or faulty oil pressure gauge sensor
Incorrect or faulty oil pressure gauge
Plugged oil filter
Malfunctioning oil filter bypass valve
Remove the oil pressure gauge sensor or another engine block oil gallery plug.
Install an oil pressure gauge and measure the engine oil pressure.
If the engine oil pressure is below specifications, inspect the engine for one or more of the following:
Oil pump worn or dirty
Malfunctioning oil pump pressure relief valve
Oil pump screen loose, plugged, or damaged
Excessive bearing clearance or worn bearings
Cracked, porous, or restricted oil galleries
Engine block gallery plugs missing or incorrectly installed
Broken valve liftersRepair any of the components from above if found.