How to Select Piston and Bearing

DESCRIPTION





^ The identification grade stamped on each part is the grade for the dimension measured in new condition. This grade cannot apply to reused parts.
^ For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the measurement with the values of each selection table.
^ For details of the measurement method of each part, the reuse standards and the selection method of the selective fitting parts, use the applicable procedures.

HOW TO SELECT PISTON

When New Cylinder Block is Used





^ Check the cylinder bore grade on rear left side of cylinder block (L), and select piston of the same grade.
A: Correction stamp
B: Standard stamp
C: Cylinder No. 1 bore grade
D: Cylinder No. 2 bore grade
E: Cylinder No. 3 bore grade
F: Cylinder No. 4 bore grade
G: No. 1 main bearing housing grade
H: No. 2 main bearing housing grade
I: No. 3 main bearing housing grade
J: No. 4 main bearing housing grade
K: No. 5 main bearing housing grade
<---: Engine front
^ If there is a correction stamp mark on the cylinder block, use it as a correct reference.

When Cylinder Block is Reused
1. Measure the cylinder bore inner diameter. Refer to EM-88, "Inspection After Disassembly". Inspection After Disassembly
2. Determine the bore grade by comparing the measurement with the values under the cylinder bore inner diameter of the "Piston Selection Table".





3. Select piston of the same grade.
A: Identification code
B: Front mark
C: Piston grade number





NOTE:
^ Piston is available together with piston pin as an assembly.
^ There is no piston pin (piston pin hole) grade.