Yanmar EF-494T - Lubrication Oil Pump (lo Pump)

3 ENGINE 3 ENGINE
EF494T TM 06/2011 edition
91
(A) Fuel injection pump
(B) Hydraulic switch activation
Pressure (0.5±0.1 kg/cm
2
)
(C) Blancer shaft
(D) Oil circuit
(E) Valve arm shaft
(F) Camshaft
(G) Crankshaft
(H) Filter
(I) Pump
(J) Strainer
(K) Oil filter(secondary)
(L) Oil pump
3.3.2 Lubrication oil pump (LO pump)
A trochoid pump installed on the cylinder block,
driven by a crank gear, and provided with a relief
valve to protect the oil cooler.
Discharge pressure
(at rated rpm)
0.44 MPa (4.5 kgf/cm
2
)
(A) Crank gear
(B) Cranks shaft
(C) Cover
(D) Relief valve
(E) Spring
(F) Plug
(G) Outer rotor
(H) Inner rotor (Driven by crank gear)
(I) Gear case