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Combustion Chamber
The combustion chamber is of a swirl chamber type.
The swirl chamber
is made of· a heat-resisting ste.el and is pressed into the cylinder
head.
The swir I
chamber
should not be disassembled because it is
machined
w~th
the head after being pressed into the cylinder head.
Rocker Arms and Rocker Shaft
Rocker arms are made of a special cast iron.
Rocker shaft is made of
bar steel and the surface is cemented.
Oil to the rocker arms and
rocker shaft is supplied through the rocker cover oil hole.
Rocker Cover
The rocker cover is made of aluminum die-cast and the upper part is
provided with an oil passage to supply oil to the rocker section via a
supply tube from the front cam bearing.
The cover is also provided with a fill port for engine oil.
Servicing the Cylinder Head
Disassembly
(a)
Remove the exhaust manifold.
(b)
Remove the oil pipe from the cylinder head.
(c)
Remove the fuel return line.
(d)
Remove the fuel injection lines from the injectors.
(e)
Remove the injectors.
(f)
After removing the glow plug lead wire, remove the glow plug.
(g)
Remove the rocker cover.
(h)
After removing the rocker shaft holddown bolts, remove the rocker
arms, rocker shaft and rocker support assembly.
After removing
the rocker assembly, pullout the push rods.
(i)
Loosen
and
remove
the
cylinder
head
bolts
in the
illustrated
order.
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