TM 5-2420-230-24-2
Section 0 - Engine Disassembly and Assembly - Group 00
Piston and Rod Assemblies - Installation (0-72)
B Series Shop Manual
Page 0-49
Move the dial indicator over the piston directly over the
piston pin to eliminate any side-to-side movement. Do not
place the indicator tip on the anodized area.
Rotate the crankshaft to top dead center (TDC). Rotate
the crankshaft clockwise and counterclockwise to find the
highest dial indicator reading.
Record the reading.
Remove the piston/connecting rod assembly from the No.
1 cylinder and install the assembly into the No. 2 cylinder.
Repeat the procedure for every cylinder using the same
piston/connecting rod assembly.
Determine the grade of the piston being used by referring
to the chart.
Four digits on top of the piston are the last four digits of
the part number.
L-138