oil pressure

[robert bowen]

I HAVE A 1941 FORD9N.tractor lost all oil
pressure.checked oil filter canister which had no
oil in it.drained oil and removed oil pan.inspected
oil pump gears for wear and checked oil pump pickup
tube for cracks.everything appears to look ok.i am
at a lost.can anyone PLEASE give any suggestion on
what i may be missing or what i should try now!
thanks mike

 

[HCooke]

What was the oil pressure before this happened? How long did it run without oil pressure? What is the condition of the bearings? Oil goes thru the pressure relief valve and thru the oil galley to the bearings before it gets to the gauge and the oil filter.

 

[Charner]

As a rule, the oil pressure gets lower and lower as the pump wares out. Nine out of ten times the pickup tube breaks loose at the pump if the pressure is lost suddenly. While you have it apart, I would go ahead and rebuild the pump. I would double check the tube for a leak. A pin hole will cause total lose of pressure. Check the releaf valve on the front top of the engine to make sure its not stuck.

 

[souNdguy]

do check the oil relief spring...