Dodge D250 1990 Service Manual page 166

Base Engine Components
DODGE Turbo Diesel
Troubleshooting Logic
Page9A-27
Lubricating Oil Pressure Low (Continued)
Cause
Correction
Loose or Missing Cup Plugs Check/Replace Cup Plugs.
OK
•
Worn Lube Pump Check/Replace Lube Pump.
OK
Suction Tube Loose or Seal Leaking Check/Replace Seal.
OK
Loose Main Bearing Cap Check/Install New Bearings and
Tighten Cap.
OK
t
Worn Bearings or Wrong Bearings
Inspect/Replace Connecting Rod or
Main Bearings; also Check/Replace
Piston Cooling Nozzles.
Installed
Inspect/Replace Connecting Rod or
Main Bearings; also Check/Replace
Piston Cooling Nozzles.