How does the check ball in an oil pump work?
The coil spring in the oil pump holds the check ball in place preventing the oil from entering the engine until there’s three pounds of oil pressure in the engine. Once the pressure is up the check ball lifts off of its seat and oil flows unhindered into the pump and through the engine and then back to the oil tank.
What is the check valve on a bigtwin oil pump?
The check valve in the oil pump is a ball and spring, item 11 and 12 on this diagram. I read about this fix. It looked good, but I didn’t want to take off the pump. If replacing the ball and spring doesn’t fix it, I will try lapping the seat. Clamp off the gravity feed. Remove the inside cap. Here’s the cap and spring out.
Where are the check valves on an oil burner?
There the oil supply coming from the oil tank is marked in green, passing through an oil pump, a check valve (red) and on to three oil burners through three OSVs (blue). The oil return line is marked in light brown; you will see a second check valve (red) on the return line.
When do you need an oil pump check valve?
Check valves are also used on No. 6 fuel oil systems, but at the oil pump as drain-back problems are less troublesome with heavier grade fuel. – Pump School (2012) Shown at left is an oil tank foot valve, a check valve used to help prevent the loss of prime in the oil suction line.
The coil spring in the oil pump holds the check ball in place preventing the oil from entering the engine until there’s three pounds of oil pressure in the engine. Once the pressure is up the check ball lifts off of its seat and oil flows unhindered into the pump and through the engine and then back to the oil tank.
The check valve in the oil pump is a ball and spring, item 11 and 12 on this diagram. I read about this fix. It looked good, but I didn’t want to take off the pump. If replacing the ball and spring doesn’t fix it, I will try lapping the seat. Clamp off the gravity feed. Remove the inside cap. Here’s the cap and spring out.
What does it mean when oil drips into crankcase?
A: Hello Larry,This problem is known as oil sumping, it happens when then gravity and static pressure of oil in the tank located above the oil pump push the check ball upward and oil drips into the crankcase.
Where does the oil line go in a V-twin?
The breather line from the tank goes to the breather fitting (A) on the engine case just above the pump. The oil feed line from the tank goes to the feed fitting on the pump (B) and the return line from the pump (C) goes back to the return line on the tank or if you have a remote oil filter it goes to the “in” fitting on the filter mount.