Category: Low Oil Pressure
- Series 50 – Section 26.13 Defective Oil Pump Assembly
- Series 50 – Section 26.10 Defective Pressure Relief Valve
- Series 50 – Section 26.11 Defective Pickup Screen Tube and Screen Assembly
- Series 50 – Section 26.7 Restricted Oil Cooler
- Series 50 – Section 26.8 Nonfunctional or Sticking Oil Pressure Regulator Valve
- Series 50 – Section 26.9 Defective Bypass Valve
- Series 50 – Section 26.5 Oil Pressure Gage Line Obstructed
- Series 50 – Section 26.6 Rocker Arm Shaft Plugs Missing (New or Rebuilt Engines Only)
- Series 50 – Section 26.2 Improper Lubricating Oil Viscosity
- Series 50 – Section 26.3 Lubricating Oil Diluted With Fuel Oil or Engine Coolant
- Series 50 – Section 26.4 Faulty Oil Pressure Gage Sensor
- Series 50 – Section 26.1 Improper Engine Oil Level