3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Connecting Rod and Main Bearing Journals

Usage:

769C 01X
有关详细信息,请参阅再使用零件指南。

连杆轴承轴颈

表 1
曲轴连杆轴颈(轴承表面)直径 
原始尺寸  97.028 ± 0.020 mm (3.8200 ± 0.0008 in) 

新轴承与新轴颈之间的间隙 ... 0.070 至 0.178 mm (0.0028 至 0.0070 in)

主轴承轴颈

表 2
主轴承曲轴轴颈(轴承表面)直径 
原始尺寸  120.650 ± 0.020 mm (4.7500 ± 0.0008 in) 
缩小尺寸轴颈
0.63 mm (0.025 in) 
120.015 ± 0.020 mm (4.7250 ± 0.0008 in) 
缩小尺寸轴颈
1.27 mm (0.050 in) 
119.380 ± 0.020 mm (4.7000 ± 0.0008 in) 

带 2 个螺栓的主轴承盖

新轴承与新轴颈之间的间隙 ... 0.076 至 0.186 mm (0.0030 至 0.0073 in)

带四个螺栓的主轴承盖

新轴承与新轴颈之间的间隙 ... 0.071 至 0.178 mm (0.0028 至 0.0070 in)
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