3500B High Displacement Locomotive Engines Caterpillar


Connecting Rod

Usage:

3516B BCK


图 1g02573156


图 2g02573158
H-H 视图
(3) 用于正确安装连杆盖的定位销

表 1
技术规格 - 381-6555 连杆组件 
项目  数量  零件  技术规格说明 
套筒轴承轴承接头任一面中线上方活塞销的安装角度 (A) 为 10 度。
安装活塞销的轴承前,必须从 175 to 260 °C (347 to 500 °F) 加热连杆。 加热连杆的最小长度 (B) 为 105 mm (4.1 inch)。 请勿使用喷枪加热连杆。 
377-5237 轴承  在装配活塞和连杆前用清洁的发动机机油彻底润滑活塞销。
安装衬套后轴承上用于活塞销的孔径为 70.000 ± 0.008 mm (2.7559 ± 0.0003 inch)
连杆上的轴承孔径为 75.760 ± 0.015 mm (2.9827 ± 0.0006 inch)。 
轴承中心间的距离为 392.5 mm (15.45 inch)。 
7N-2043 定位销  定位销在连杆盖上的突出量为 4.0 ± 0.5 mm (0.16 ± 0.02 inch)。 
向连杆螺栓施加最终扭矩后,曲轴连杆轴颈的轴承连杆孔径为 143.028 ± 0.015 mm (5.6310 ± 0.0006 inch)。 
曲轴连杆轴承的孔径为 135.133 to 135.194 mm (5.3202 to 5.3226 inch)。 
在连杆和连杆盖的这个位置,蚀刻下气缸编号。 将编号标记在连杆和连杆盖上。 在连杆与轴承挡圈凹口相同一侧上标上编号。 
将连杆和活塞总成安装至发动机时,该斜面侧必须与曲轴销止推面相邻。 
7N-2405 螺栓  采用以下步骤拧紧连杆螺栓:
螺栓 1 和螺栓 2 必须在具有轴承止动舌和定位销 (3) 的连杆盖的同一端。
1. 组装前,将 Molylube 涂覆在螺栓螺纹、螺栓杆和螺栓座上。
2. 接着,将螺栓 1 和螺栓 2 拧紧至 90 ± 5 N·m (66 ± 4 lb ft)
3. 接着,将螺栓 3 和螺栓 4 拧紧至 90 ± 5 N·m (66 ± 4 lb ft)
4. 然后,再将螺栓 3 和螺栓 4 拧紧至 90 ± 5 N·m (66 ± 4 lb ft)
5. 再将各螺栓拧紧 90 ± 5 度。 

Caterpillar Information System:

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