DESCRIPTION
| Selection points | Selection parts | Selection items | Selection methods |
|---|
| Between cylinder block and crankshaft | Main bearing | Main bearing grade (bearing thickness) | Determined by matching of cylinder block bearing housing grade (inner diameter of housing) and crankshaft journal grade (outer diameter of journal) |
| Between crankshaft and connecting rod | Connecting rod bearing | Connecting rod bearing grade (bearing thickness) | Combining service grades for connecting rod big end inner diameter and crankshaft pin outer diameter determine connecting rod bearing selection. |
| Between cylinder block and piston | Piston and piston pin assembly (The piston is available together with piston pin as an assembly.) | Piston grade (piston outer diameter) | Piston grade = cylinder bore grade (inner diameter of bore) |
| (1) Between piston and connecting rod | | | |
| (1) For the service parts, the grade for fitting cannot be selected between a piston pin and a connecting rod. (Only 0 grade is available.) The information at the shipment from the plant is described as a reference. |
| (1) | For the service parts, the grade for fitting cannot be selected between a piston pin and a connecting rod. (Only 0 grade is available.) The information at the shipment from the plant is described as a reference. |
PISTON AND BEARING SELECTION CHART
- 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 repair parts, measure the dimension accurately. Determine the grade by comparing the measurement with the values or each selection table.
- For details of the measurement method of each part, the reuse standards and the selection method of the selective fitting parts, refer to the text.
Scheme 9
Scheme 9: When New Cylinder Block is Used
- Check the cylinder bore grade (1, 2 or 3) on rear side of cylinder block, and select a piston of the same grade.
- The piston is available with piston pin as a set for the service part. (Only 0 grade piston pin is available.)
Scheme 10
Scheme 10: When Cylinder Block is Reused
- Measure the cylinder block bore inner diameter.
- Determine the bore grade by comparing the measurement with the values under the cylinder bore inner diameter of the «PISTON SELECTION TABLE»(ref-233643-S03246704462006052600000) .
- Select the piston of the same grade.
