Yanmar 3TNV82A Service Manual page 174

ENGINE
5. Remove the turbocharger-to-intake manifold
hose (Figure 6-38, (1)) (if equipped).
6. Disconnect the electrical wire from the intake air
heater (Figure 6-38, (12)).
7. Remove the intake manifold bolts
(Figure 6-38, (11)). Remove the intake
manifold (Figure 6-38, (10)). Discard the intake
manifold gasket (Figure 6-38, (9)).
8. Disconnect the turbocharger oil supply
(Figure 6-38, (2)) and the return lines
(Figure 6-38, (4)) (if equipped).
9. Remove the exhaust manifold bolts
(Figure 6-38, (7)). Remove the exhaust
manifold (Figure 6-38, (6)) with the
turbocharger attached. Discard the exhaust
manifold gasket. (Figure 6-38, (5)).
(2)
(3)
(1)
(4)
(12)
(11)
(10)
Figure 6-38
10. Remove the engine coolant pump. See
Disassembly of Engine Coolant Pump on
page 8-10.
Removal of Valve Cover
Note: The high pressure fuel injection lines and
valve cover grommets must be removed
prior to removing the valve cover. See
Removal of Fuel Injectors on page 7-31.
1. Remove the high-pressure fuel lines.
6-48
(6)
(7)
(5)
(8)
(9)
0001860
2. Use a flat-blade screwdriver (Figure 6-39) to
remove the fuel injection line grommets
(Figure 6-40, (1)) from the valve cover
(Figure 6-40, (3)) and fuel injectors
(Figure 6-40, (2)). There is a notch at the 3
o'clock position in the valve cover opening to
insert the screwdriver.
Figure 6-39
3. Remove the valve cover nuts (Figure 6-40, (4)).
4. Remove the O-ring (Figure 6-40, (5)) on each
valve cover nut.
(2)
(1)
Figure 6-40
TNV DI Service Manual
4-Valve Cylinder Head
(3)
(4)
(5)
(6)
0001877