Lube Oil Pump; Lube Oil Pump Construction; Specifications Of Lube Oil Pump - Yanmar 3JH4E Service Manual

8.2 Lube oil pump

8.2.1 Lube oil pump construction

The trochoid type lube oil pump is mounted in the gear case, and the inner rotor is driven by the
crankshaft.
The lube oil flows from the intake filter mounted on the bottom of the cylinder block through the holes in
the cylinder block and engine plate, and out from the holes in the engine plate and cylinder block to the
discharge filter.
The lube oil pump is fitted with a control valve, which controls the discharge pressure.
3JH4E and 4JH4E
Crankshaft
Pump cover
Control valve
Plug
Gear case

8.2.2 Specifications of lube oil pump

Lube oil pump specifications
Engine speed
Delivery quantity
Delivery pressure
Oil temp. (Oil pan)
Outer rotor
Inner rotor
010648-00E
-1
3000
min
(L/min)
MPa
0.39-0.54
2
(4.0-5.5)
(kgf/cm )
(°C)
4JH4-TE and 4JH4-HTE
Pump cover
Control valve
Inner rotor
Outer rotor
3JH4/4JH4E
800
17.5 8.0
0.06
(0.6)
115
253
8. Lubrication system
Crank gear
010543-00E
4JH4-TE/4JH4-HTE
3200 800
17.5 8.0
0.28-0.45 0.06
(2.9-4.6) (0.6)