SCHEMATIC OF LUBRICATION SYSTEM
(Industrial Engine Illustrated)
1. Front cover for the engine. 2. Cylinder head. 3. Oil manifold. 4. Base for the oil cooler. 5. Bypass valve. 6.
Oil cooler. 7. Oil pump. 8. Cover for oil pump. 9. Suction bell for oil pump. 10. Bypass valve. 11. Bypass
than 75 to 80 psi (5.3 to 5.6 kg/cm2) the bypass valve (5)
The lubrication system uses a six lobe rotor type oil
will open. This permits the oil that is not needed to go to
pump (7). Bolts hold the cover for the oil pump (8) on the
the inlet oil passage of the oil pump.
front cover for the engine (1). The gear on the crankshaft
drives the outer rotor. The outer rotor has rotation in a
Oil from the oil pan is pulled through the suction bell
bearing in the front cover for the engine. The inner rotor
for the oil pump (9) by oil pump (7). The oil is sent by the
goes on a short shaft in the front cover for the engine.
pump to an oil passage in the front cover for the engine
The inner rotor is driven by the outer rotor.
(1). Oil from this passage goes to the cylinder block and
on to base for the oil cooler (4). The base for the oil
A bypass valve (5) in the cover for the oil pump (8)
cooler is on the left side of the engine near the front of
controls the pressure of the oil coming from oil pump (7).
The pump can put more oil into the system than needed.
the engine. Bypass valve (10) in the base for the oil
When the pressure of the oil going into the engine is more