How do you prime a Ford 8N oil pump?
Get a trigger type squirt oil can and put the nozzle in the hole that the valve poppet goes into. Squirt several shots of motor oil into the hole. This oil will run down into the top side of the oil pump and collect on the pump gears. This is usually enough to prime the pump.
Can an oil pump lose its prime?
Although not a common occurrence, it is possible that the oil pump may lose its prime during the oil change. The low oil pressure light will remain on or the oil pressure gauge will register little or no pressure when the engine is started.
When should I prime my oil pump?
It is critical that the oiling system be primed before the first start-up. Priming fills the internal oil passages so that all moving parts have oil, once the engine is started. Engine oil lubricates and cools moving parts of the engine.
Why is my oil pressure so low on my Ford tractor?
This can also happen when a tractor has been sitting for a long period of time without being started. It usually happens because the oil pump pickup tube has come loose or the gasket on the oil pump is bad and the pump is “sucking air” rather than pulling oil up from the sump. Badly worn gears in the oil pump can cause it, too.
What’s the best way to Prime an oil pump?
Remove the nut and pull out the spring and valve poppet. Get a trigger type squirt oil can and put the nozzle in the hole that the valve poppet goes into. Squirt several shots of motor oil into the hole. This oil will run down into the top side of the oil pump and collect on the pump gears. This is usually enough to prime the pump.
What should the oil pressure be on a newly rebuilt engine?
We also hear about newly rebuilt engines that have low oil pressure. A proper rebuild of the engine and pump will result in a running oil pressure of 40-45 PSI cold and at least 35-40 PSI hot. If it’s less, something wasn’t done right during the rebuild, plain and simple.
What should the oil pressure be on a Fordson?
The relief valve spring is designed to hold the poppet on the seat until oil pressure is 35-45 psi (Yes, the poppet IS supposed to have that flat spot on it). The relief valve only sets the maximum pressure attainable and has no effect on raising a lower pressure unless the spring is weak or broken.