DETROIT DIESEL 53
Connecting Rod 1.6.3
Fig. 8. - Cylinder Liner Seal Ring
below the original top groove (Fig. 8). This groove will
permit further use of the cylinder block where corrosion
Also, align the matchmarks on the liner and block. Now
or erosion of the upper seal ring groove has occurred.
slide the entire assembly into the block bore and seal
rings, being careful not to damage the seal rings.
2. Apply hydrogenated vegetable type shortening or
permanent type antifreeze solution to the inner surface
7. Pull or push the piston and connecting rod down until
of the seal ring.
the upper bearing shell seats firmly on the crankshaft
journal. Use care so the bearing shell will not be
dislodged from the rod.
3. If any of the pistons and liners are already in the
engine, use hold-down clamps (Fig. 5) to retain the
liners in place when the crankshaft is rotated.
CAUTION: On a V engine, the
distance from the center of the
4. Rotate the crankshaft until the connecting rod journal
connecting rod bolts to the sides of
of the particular cylinder being worked on is at the
the rod are not equal. Therefore, to
bottom of its travel, wipe the journal clean, and lubricate
avoid cocking the rods, the narrow
it with clean engine oil.
sides of the rods must be together
when attached to the crankshaft.
5. Install the upper bearing shell -the one with a short
groove at each parting line -in the connecting rod.
8. Place the lower bearing shell -the one with the
Lubricate the shell with clean engine oil.
continuous oil groove -in the connecting rod cap with the
tang on the bearing in the notch in the cap. Lubricate
6. Hold the piston, rod and liner in line with the block
the bearing shell with clean engine oil.
bore (Fig. 7) so the identification number on the rod is
facing the outer edge of the block.
1970 General Motors Corp.
July, 1970
SEC. 1.6.3 Page 5
