Disassembly Of 2-Valve Cylinder Head - Yanmar 3TNV82A-B Service Manual

ENGINE
Disassembly of 2-Valve Cylinder
Head
Prepare a clean, flat working surface on a
workbench large enough to accommodate the
cylinder head assembly. Discard all gaskets,
O-rings and seals. Use new gaskets, O-rings and
seals on reassembly of the cylinder head.
1. Drain the coolant from the engine into a suitable
container. See Drain, Flush and Refill Cooling
System With New Coolant on page 5-36.
CAUTION
Identify all parts and their location using
an appropriate method. It is important
that all parts are returned to the same
position during the reassembly process.
2. Disconnect the electrical wire from the intake air
heater (Figure 6-3, (1)).
(1)
Figure 6-3
3. Disconnect the coolant hoses from the cold
start device (Figure 6-4, (1)) on the fuel
injection pump.
6-36
4. Remove the intake manifold bolts
(Figure 6-5, (1)). Remove the intake manifold
0000080en
(Figure 6-5, (2)). Discard the intake manifold
gasket (Figure 6-5, (3)).
(2)
5. Remove the exhaust manifold bolts
(Figure 6-5, (4)) and nuts (Figure 6-5, (5)).
Remove the exhaust manifold (Figure 6-5, (6))
and the exhaust manifold gasket
(Figure 6-5, (7)).
6. Remove the coolant pump. See Disassembly of
Engine Coolant Pump on page 8-10.
7. Remove the high-pressure lines and fuel
injectors from the cylinder head. See Removal
of Fuel Injectors on page 7-35.
2-Valve Cylinder Head
Figure 6-4
(5)
(3)
(1)
Figure 6-5
TNV DI Service Manual
(1)
0002087A
(4)
(5)
(6)
(7)
0001682