LUBRICATION
Lubrication Components and Functions
8-4
6LY3 Service Manual
© 2007 Yanmar Marine International
LUBRICATION COMPONENTS
AND FUNCTIONS
The engine oil in the oil pan is pumped up through
the oil intake filter
(Figure 8-1, (11))
and intake line
by the oil pump
(Figure 8-1, (12))
. The oil is
pumped to the oil cooler
(Figure 8-1, (2))
and the
filter assembly
(Figure 8-1, (4))
. The oil is sent to
the oil pressure regulating valve
(Figure 8-1, (10))
,
which controls the oil pressure. Then it goes
through the holes in the cylinder body and
dispersed to the parts to be lubricated.
The oil, which flows in the main gallery, goes to the
crankshaft journals
(Figure 8-1, (9))
and lubricates
the crank pins from the crankshaft journals.
Oil for the fuel injection pump
(Figure 8-1, (1))
is
sent by lines from the main gallery to the fuel
injection pump
(Figure 8-1, (1))
.
Oil for the turbocharger
(Figure 8-1, (6))
is sent by
lines from the oil filter
(Figure 8-1, (5))
to the
turbocharger
(Figure 8-1, (6))
.
The oil pressure throughout the system is regulated
by the safety valve
(Figure 8-1, (13))
and then by
the oil pressure regulating valve
(Figure 8-1, (10))
.
Figure 8-1
Figure 8-1
1 – Fuel Injection Pump
2 – Oil Cooler
3 – Bypass Oil Filter
4 – Filter Assembly
5 – Full Flow Oil Filter
6 – Turbocharger
7 – Rocker Arm Shaft
8 – Cam Bearings
9 – Main Bearings
10 – Oil Pressure Regulating Valve
11 – Oil Intake Filter
12 – Oil Pump
13 – Safety Valve
14 – Heat Exchanger
0006221
(4)
(5)
(6)
(7)
(
3
)
(1)
(2)
(14)
(
8
)
(9)
(10)
(11)
(12)
(1
3
)
