Remove the oil pressure sender.
Install a pressure gauge [Figure 70-60-7].
Start the engine and run until it is at operating temperature.
If the oil pressure is less than the allowable limit, check the following items:
* Engine Oil Level Low
* Oil Pump Defective
* Oil Galley Plugged
* Oil Strainer Plugged
* Excessive Clearance at the Rod & Main Bearings
* Oil Pump Relief Valve Stuck
At Idle Speed Allowable Limit 7 PSI (0.50 bar)
At Rated Speed 43 – 64 PSI (2.94 – 4.41 bar)
Allowable Limit 36 PSI (2.45 bar)
