3500B and 3500C Marine Engines Caterpillar


Cylinder Block

Usage:

3516B 9F2


图 1g03497822
发动机前视图

表 1
技术规格 - 370-9890 缸体总成 
项目  数量  零件  技术规格说明 
组装时,目视板底部、缸体顶部和密封垫板两侧均不应有燃油、机油、水和密封垫粘合剂、组装固定胶或任何其他异物。 
4W-4813 塞  拧紧至扭矩为 100 ± 15 N·m (74 ± 11 lb ft)。 
5F-9657 O 形密封圈  使用润滑剂稍微润滑即将密封的孔。 
18  101-1198 凸轮轴轴承  在缸体每侧,穿过凸轮轴轴承油孔和凸轮轴轴承接合面的所有中线位置必须如图 1 所示。 
油孔位置与水平面之间的夹角 (D) 必须为 20 ± 5 度,如 1 图所示。
缸体内凸轮轴轴承的孔径为 98.00 ± 0.02 mm (3.858 ± 0.001 inch)
7X-4805 O 形密封圈  使用润滑剂稍微润滑即将密封的孔。 
6V-3348 O 形密封圈  使用润滑剂稍微润滑即将密封的孔。 
32  8T-0099 定位销  定位销自缸体上表面的延伸长度为 21.0 ± 0.5 mm (0.83 ± 0.02 inch)。 
16  197-7008 定位销  定位销自缸体上表面的延伸长度为 21.0 ± 0.5 mm (0.83 ± 0.02 inch)。 
223-1696 曲轴轴承盖  曲轴轴承盖的宽度为 340.030 ± 0.015 mm (13.3870 ± 0.0006 inch)
主轴承盖的缸体宽度为 339.985 ± 0.015 mm (13.3852 ± 0.0006 inch)。 
从曲轴轴承孔中心线至缸体顶部的新尺寸为 586 mm (23.1 inch)。 
从曲轴轴承孔中心线到缸体底部(油底壳轨)的新尺寸为 230 mm (9.1 inch)。 
缸体中的主轴承孔径为 169.742 ± 0.020 mm (6.6827 ± 0.0008 inch)。 


图 2g03497823
剖面 B-B

表 2
技术规格 - 370-9890 缸体总成 
项目  数量  零件  技术规格说明 
214-7568 O 形密封圈  使用润滑剂稍微润滑即将密封的孔。 
7N-2047 定位销  定位销自缸体后表面的延伸长度为 6.0 ± 0.5 mm (0.24 ± 0.02 inch)。 
7N-2047 定位销  定位销自缸体前表面的延伸长度为 6.0 ± 0.5 mm (0.24 ± 0.02 inch)。 
4N-0683 定位销  定位销自缸体后表面的延伸长度为 19.0 ± 0.5 mm (0.75 ± 0.012 inch)。 
7N-2044 定位销  定位销自缸体前表面的延伸长度为 40.0 ± 0.5 mm (1.57 ± 0.02 inch)。 


图 3g03497824
前视图

表 3
项目  数量  零件  技术规格说明 
16  352-6061 缸套密封件  将干燥的密封件组装到清洁干燥的缸套槽上。
组装前,用 P-80 橡胶润滑剂乳化液或液体肥皂涂覆密封件。 
48  7N-2046 O 形密封圈  组装前,用 P-80 橡胶润滑剂乳化液或液体肥皂涂覆密封件。 
36  7X-7925 螺栓  按照以下步骤拧紧曲轴轴承盖螺栓:
1. 组装前,用清洁的发动机机油完全润滑螺纹。
2. 用手将螺栓拧紧到螺纹孔中。
3. 按照图 3 中所示的数字顺序拧紧螺栓至 190 ± 14 N·m (140 ± 10 lb ft)
4. 再将螺栓拧紧 180 ± 5 度。 

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