LUBRICATION
8-14
6LPA Service Manual
Oil Cooler
© 2007 Yanmar Marine International
Oil Cooler Removal
1. Drain the engine coolant (fresh water). See
Draining the Freshwater Cooling System on
page 3-26.
2. Remove the timing belt and No. 2 camshaft
timing pulley. See Timing Belt Removal on
page 5-69.
3. Remove the fuel injection pipe and fuel injection
pump. See Fuel Injection Nozzle Removal on
page 6-14 and Fuel Injection Pump Removal on
page 6-29.
4. Remove the engine oil filter. See Changing the
Engine Oil and Replacing the Engine Oil Filter
Element on page 4-9.
5. Remove the relief valve (Figure 8-23, (2)) and
gasket.
6. Remove the check valve (Figure 8-23, (1)) and
gasket.
Figure 8-23
Figure 8-23
7. Remove 13 bolts, 2 nuts, oil cooler, cover
assembly and gasket. Discard the gasket.
Figure 8-24
Figure 8-24
Oil Cooler Disassembly and
Inspection
1. Inspect the relief valve by pressing
(Figure 8-25, (1)) the valve with a wooden stick
to check for sticking. If the valve sticks, replace
the relief valve.
Figure 8-25
Figure 8-25
2. Inspect the check valve by pressing
(Figure 8-26, (1)) the valve with a wooden stick
to check for sticking. If the valve sticks, replace
the relief valve.
Figure 8-26
Figure 8-26
0005
3
75
(1)
(2)
0005565
(1)
0005
3
77
0005
3
7
8
(1)