Lubrication Components And Functions - Yanmar 6LY3 series Service Manual

LUBRICATION
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.
Figure 8-1
(1)
(12)
(13)
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
8-4
(2)
(11)
(10)
(14)
Figure 8-1
© 2007 Yanmar Marine International

Lubrication Components and Functions

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)).
(3) (5)
(4)
(9)
(8) (7)
8 – Cam Bearings
9 – Main Bearings
10 – Oil Pressure Regulating Valve
11 – Oil Intake Filter
12 – Oil Pump
13 – Safety Valve
14 – Heat Exchanger
6LY3 Service Manual
(6)
0006221