Install Piston and Connecting Rod Assembly
1. With the piston assembled to the connecting rod and
the piston rings in place as outlined on Pages 10-2-81
and 10-2-89, apply clean engine oil to the piston, rings
and the inside surface of the piston ring compressor J
Inspect the ring compressor for
nicks or burrs, especially at the non-
tapered inside diameter end. Nicks
or burrs on the inside diameter of the
compressor will result in damage to
the piston rings.
Fig. 14. Installing Piston, Rod and Liner Assembly in
2. Place the piston ring compressor on a wood block,
with the tapered end of the ring compressor facing up.
connecting rod and cap (Fig.
identify the rod with the cap and
3. Position (stagger) the piston ring gaps properly on
indicate the particular cylinder in which
the piston. Make sure the ends of the oil control ring
they are used.
If' a new service
expanders are not overlapped.
connecting rod is to he installed. the
same identification numbers must he
4. Start the top of the piston straight into the ring
stamped in the same location as on the
compressor. Then push the piston down until it contacts
connecting rod that was replaced.
7. Push the piston and connecting rod assembly down into
5. Note the position of the matchmark and place the
the liner until the piston is free of the ring compressor.
liner, with the flange end down, on the wood block.
6. Place the ring compressor and the piston and
Do not force the piston into the liner.
connecting rod assembly on the liner so the numbers on
the rod and cap are aligned with the matchmark on the
expanders apply considerably more
force on the oil ring than the standard
expander. Therefore, extra care must be
The numbers on the side of the
taken during the loading operation to
prevent ring breakage.
Remove the connecting rod cap and the ring
Then push the piston down until the
compression rings pass the cylinder liner ports.
Install Cylinder Liner, Piston and Connecting Rod
After the piston and connecting rod assembly have been
installed in the cylinder liner, install the entire assembly in
the engine as follows:
1. If any of the pistons and liners are already in the engine,
use hold-down clamps to retain the liners in place when the
crankshaft is rotated.
2. Rotate the crankshaft until the connecting rod journal of
Fig. 13. Typical Connecting Rod Markings
the particular cylinder being worked on is at the bottom of
its travel. Wipe the journal clean and lubricate it with clean