TM 5-3895-382-24
A new cylinder liner is partially finished. Personnel with the
correct training are required in order to finish a new cylinder
liner. Special equipment and tools are also required. Refer to
the Specifications manual for additional information.
NOTE: If a new cylinder liner is installed, new piston
rings must be installed.
Height Of The Piston Above The Cylinder Block
If the height of the piston above the cylinder block is not within
the tolerance that is given in Specifications, "Piston and
Rings", the piston and the bearing for the piston pin must be
replaced. If any of the following components are replaced or
remachined, the piston height above the cylinder block must be
measured:
crankshaft
cylinder head
connecting rod
bearing for the piston pin
piston
The correct piston height must be maintained in order to
ensure that the engine conforms to the standards for
emissions.
NOTE: The top of the piston should not be machined. If
the original piston is installed, be sure that the
original piston is assembled to the correct
connecting rod and installed in the original
cylinder.
Six grades of length of connecting rods determine the piston
height above the cylinder block. The grade of length of a
connecting rod is identified by a letter or a color. The letter or
the color is marked on the side of the connecting rod. Refer to
"Inspection Of Connecting Rods" for specifications of the
connecting rods.
Illustration 86 8T-0455
Liner Projection Tool Group.
(1) 1P-2403 Dial indicator
(2) 1P-2402 Gauge body
(3) 1P-5507 Gauge block
1.
Use the 8T-0455 Liner Projection Tool Group in order to
measure the piston height above the cylinder block.
Use the gauge block (3) to zero the dial indicator (1) on
the face of the cylinder block.
2.
Position the gauge block (3) on the cylinder block.
Rotate the crankshaft until the piston is at the
approximate top center. Ensure that the flame ring of
the cylinder liner does not interfere with the gauge block
or the dial indicator.
Illustration 87
Measurement of the piston height.
(1) 1P-2403 Dial indicator
(2) 1P-2402 Gauge body
6-88
