TM 55-1930-209-14&P-21
b.
Place ring compressor on a wood block, tapered end up.
c.
Stagger piston ring gaps and make sure oil control ring expanders are not overlapped (para 6-34).
d.
Start top of piston straight into ring compressor; then, push piston down until it contacts wood block.
e.
Note position of matchmark made on liner and place liner on a wood block.
f.
Place ring compressor and piston and rod assembly on liner, so number on rod and cap are aligned with
matchmark on liner.
CAUTION
Do not force piston into liner. Extra care must be taken during this loading operation to
prevent ring breakage.
NOTE
The numbers on side of connecting rod and cap identify rod with cap and indicate
particular cylinder on which they are used. If a new connecting rod is to be installed, the
same identification number must be stamped or etched in same location as on
connecting rod that was replaced.
g. Push piston and rod assembly down into liner until piston is out of ring compressor.
h. Remove connecting rod bearing cap and ring compressor and push piston down into liner until compression rings
pass liner ports.
i.
After piston and connecting rod assembly have been installed in liner, install entire assembly as follows:
(1)
Make sure seal ring groove in cylinder block is clean. then install a new seal ring.
(2)
Apply a hydrogenated vegetable shortening or a permanent type antifreeze solution to inner surface of seal
ring.
(3)
If any of pistons and liners are already in engine, use hold-down clamps to retain liners in place when
crankshaft is rotated.
(4)
Hold piston, rod, and liner in line with block bore so identification number on rod is facing engine serial
number side. Also, align matchmarks on liner and block. Slide entire assembly into block bore and seal ring, being
careful not to damage seal ring.
6-68
