Liners—Pistons
CHANGING
The engine need not be removed for this
operation,
furthermore, it is possible to change
one individual "liner-piston" assembly.
It is not necessary to remove the timing cover and
timing gear when one or more "liner" and
"piston"
assemblies belonging to one bank of
cylinders
(LH
or RH) have to be changed.
Use the
J28858
Tool.
(Fig. 46)
-
f
Support (S) will be used as outlined in the chapter
"Cylinder Heads
—Changing
the Gaskets".
Dummy bearing (F) will be fitted and this will
allow the crankshaft to be turned in order to reach
each big-end cap in turn without upsetting the
timing phase.
FITTING THE DUMMY
BEARING-Fig.
47
With support (S) already in position, fit dummy
bearing (F) and tighten the camshaft sprocket
fixing bolt moderately.
If a clearance exists between the
undersiae
of the
dummy bearing bottom flange and the gasket
face on the cylinder head, pack up
with
shims to
prevent any slackening of the timing chain which
may jam the tensioner in the forward position.
Moderately tighten both bolts. Remove support
IS).
Removal of all six assemblies
is
dealt with in this
chapter. As both cylinder heads have to be
removed it is more practical to remove the timing
gear.
Disconnect battery.
Drain the cooling system and sump (oil pan)
Remove
the
air
filter
inlet manifold
exhaust
timing cover (to loosen pulley nut, lock the
flywheel)
oil pump driving sprocket and its chain
camshaft sprockets and their chains
oil pan (sump)
the suction pipe and gauge
anti-emulsion plate
and cylinder heads.
Refer to chapters "Cylinder Block" and "Cylinder
Heads" for peculiar points dealing with the
various dismantling operations.
Fit liner clamps J28852.
Mark the connecting rods, starting with No. 1 at
the flywheel end, so that they match the cylinder
numbers.
The nuts holding the six big-end caps cannot be
unscrewed with the crankshaft in one position
only. Work round in order of accessibility and
withdraw the "liner-piston" assemblies one by
one.
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