Yanmar 3TNV88F, Service Manual

Page: 101 / 266

ENGINE
3TNV88F Service Manual 6-17
Cylinder Head
Disassembly of 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 5-20.
NOTICE
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.
Figure 6-3
2. Remove the intake manifold bolts
(Figure 6-4, (1)) . Remove the intake manifold
(Figure 6-4, (2)) . Discard the intake manifold
gasket (Figure 6-4, (3)) .
Figure 6-4
3. Remove the exhaust manifold bolts
(Figure 6-4, (4)) and nuts (Figure 6-4, (5)) .
Remove the exhaust manifold (Figure 6-4, (6))
and the exhaust manifold gasket
(Figure 6-4, (7)) .
4. Remove the coolant pump. See Disassembly of
Engine Coolant Pump on page 8-8.
5. Remove the high-pressure lines and fuel
injectors from the cylinder head. See Removal
of Fuel Injectors on page 7-25.
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