CRANKSHAFT
'GEAR
INSTALLING
GEARS
VT-1029-01
FIGURE
11.
TIMING GEAR REMOVAL AND INSTALLATION
PISTONS
AND
CONNECTING
RODS
Observe the following procedure when removing pistons
and connecting rods from the engine.
1.
Drain oil.
2.
Remove the cylinder head and oil cooler from the
engine.
3.
Remove the ridge from the top
of
each cylinder with
a ridge reamer before attempting piston removal
(Figure
12).
Improper piston removal can
cause piston damage. Use ridge
reamer
to
remove cylinder ridge before removing
piston.
4.
Turn the crankshaft until the piston is at the bottom
of
its
stroke and remove the connecting rod nuts. Lift
the rod bearing cap
from
the rod and push the rod
and piston assembly out through the top
of
the
cylinder using
a
hammer handle.
Do
not scratch the
crankpin and cylinder wall when removing the
piston and rod..
5.
Mark each piston and
rod
assembly
so
they can be
returned
to
their respective cylinders after overhaul.
Keep connecting rod bearing caps with their
respective rods.
6.
Remove the piston rings from the piston with a
piston ring spreader (Figure
13).
Remove the piston
pin retainer and push the piston pin out.
FIGURE
13.
REMOVING PISTON RINGS
7.
Remove dirt and deposits from the piston surfaces
with an approved cleaning solvent. Clean the piston
ring grooves with a groove cleaner or the end of a
piston ring filed
to
a sharp point (Figure
14).
Care
must be taken
not
to
remove metal from the groove
sides.
Improper piston cleaning can
'cause piston damage.
Do
not
use
a caustic cleaning solvent or
wire
brush
for
cleaning pistons.
8.
Clean the connecting rods
in
solvent.
Blow
out
all
FIGURE
12.
REMOVING RIDGE
FROM
CYLINDER
passages with compressed air.
10-8
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