How To Select Connecting Rod Bearing
When New Connecting Rod and Crankshaft are Used
Check pin journal grade ("0", "1", or "2") on front of crankshaft, and select connecting rod bearing of the same grade.
When Crankshaft and Connecting Rod are Reused
- Measure the connecting rod big end diameter. Refer to Inspection After Disassembly .
- Make sure that the connecting rod big end diameter is within the standard value.
- Measure the crankshaft pin journal diameter. Refer to Inspection After Disassembly .
- Determine the crankshaft pin journal grade by using the measured dimension in "Crankshaft pin journal diameter" column of "Connecting Rod Bearing Selection Table".
- Select connecting rod bearing of the same grade.
Connecting Rod Bearing Selection Table
Unit: mm (in)
|
Connecting rod big end diameter |
57.000 - 57.013 (2.2441 - 2.2446) |
Unit: mm (in)
|
Crankshaft |
Connecting rod bearing |
|||
|
Crankshaft pin journal diameter |
Grade (Mark)* |
Dimension (Bearing thickness range) |
Bearing grade No.* |
Color |
|
53.968 - 53.974 (2.1247 - 2.1250) |
0 |
1.500 - 1.503 (0.0591 - 0.0592) |
STD 0 |
Black |
|
53.962 - 53.968 (2.1245 - 2.1247) |
1 |
1.503 - 1.506 (0.0592 - 0.0593) |
STD 1 |
Brown |
|
53.956 - 53.962 (2.1242 - 2.1245) |
2 |
1.506 - 1.509 (0.0593 - 0.0594) |
STD 2 |
Green |
*: Always check with the Parts Department for the latest parts information.
Undersize Bearings Usage Guide
- When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod bearings, use undersize (US) bearings.
- When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing installed, and grind crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.CAUTION: In grinding crankshaft pin to use undersize bearings, keep the fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)].
Unit: mm (in)
|
Size |
Thickness |
|
US 0.25 (0.0098) |
1.626 - 1.634 (0.0640 - 0.0643) |