Connecting Rod Bearing

HOW TO SELECT PISTON AND BEARING

Connecting Rod Bearing


WHEN NEW CONNECTING ROD AND CRANKSHAFT ARE USED






1.Apply connecting rod big end diameter grade stamped (C) on connecting rod side face to the row in the "Connecting Rod
Bearing Selection Table".










2.Apply crankshaft pin journal diameter grade stamped on crankshaft front side to the column in the "Connecting Rod Bearing
Selection Table".





3.Read the symbol at the cross point of selected row and column in the "Connecting Rod Bearing Selection
Table".
4.Apply the symbol obtained to the "Connecting Rod Bearing Grade Table" to select connecting rod bearing.

WHEN CONNECTING ROD AND CRANKSHAFT ARE REUSED

1.Measure the dimensions of the connecting rod big end diameter and crankshaft pin journal diameter individually. Refer to "Inspection" Inspection.
2.Apply the measured dimension to the "Connecting Rod Bearing Selection Table".
3.Read the symbol at the cross point of selected row and column in the "Connecting Rod Bearing Selection
Table".
4.Apply the symbol obtained to the "Connecting Rod Bearing Grade Table" to select connecting rod bearing.
Connecting Rod Bearing Selection Table





Connecting Rod Bearing Grade Table
Connecting Rod Bearing Grade Table: Refer to "Connecting Rod Bearing" [1][2]Connecting Rod Bearing.
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 the 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 (A) [0.8 - 1.2 mm (0.031 - 0.047 in)].

Bearing undersize table:
Refer to "Connecting Rod Bearing" [1][2]Connecting Rod Bearing.