148
KENR6932
Disassembly and Assembly Section
g01341306
Illustration 298
1.
Remove bolts (12) and connecting rod cap (11)
from connecting rod (6). Discard the bolts .
Note:
Fracture split connecting rods should not be left
without the connecting rod caps installed. After the
disassembly procedure for the piston and connecting
rod is completed, carry out the assembly procedure
and the installation procedure as soon as possible.
Refer to Disassembly and Assembly, “Piston and
Connecting Rods - Assemble” and Disassembly and
Assembly, “Piston and Connecting Rods - Install”.
2.
Remove lower bearing shell (10) from connecting
rod cap (11). Remove upper bearing shell (9)
from connecting rod (6). Keep the bearing shells
together.
g01341307
Illustration 299
3.
Place the piston and connecting rod assembly on
a suitable surface with the connecting rod upward.
Use Tooling (A) in order to remove circlips (5).
Note:
The forged marks (X) may be on the front of
the connecting rod assembly, or on the rear of the
connecting rod assembly. The forged marks should
not be used for the purposes of orientation.
4.
Remove piston pin (7) and connecting rod (6) from
piston (4).
Note:
If the piston pin cannot be removed by hand,
heat the piston to a temperature of 45 ± 5 °C
(113 ± 9 °F). Do not use a torch to heat the piston.
Note the orientation of connecting rod (6) and piston
(4).
5.
Place the piston on a suitable surface with the
crown upward. Use Tooling (B) in order to remove
compression rings (1) and (2), and oil control ring
(3) from piston (4).
Note:
Identify the position and orientation of
compression rings (1) and (2), and oil control ring (3).
NOTICE
Removal of the piston pin bushing must be carried
out by personnel with the correct training. Also spe-
cial machinery is required. For more information refer
to your authorized Perkins dealer or your Perkins dis-
tributor.
6.
Inspect the connecting rod for wear or damage. If
necessary, replace connecting rod (6) or replace
the bush for piston pin (8).