3500C Marine Engines Caterpillar


Cylinder Head

Usage:

3512C 2A2


图 1g02637022

表 1
290-1351 缸盖的技术规格 
项目  数量  零件  技术规格说明 
183-8809 气门座圈  安装时,收缩气门座圈并将座圈放到缸盖沉孔中。 
289-9745 气门座圈  安装时,收缩气门座圈并将座圈放到缸盖沉孔中。 
3B-0623 杯形塞  安装前,将 Loctite 11358 涂覆到杯塞的孔中。 
3B-0645 杯塞  安装前,将 Loctite 11358 涂覆到杯塞的孔中。 
杯塞 (3) 的安装长度为 9.0 ± 0.5 mm (0.35 ± 0.02 in)。 
杯塞 (4) 的安装长度为 1.0 ± 0.5 mm (0.04 ± 0.02 in)。 


图 2g02668504

表 2
290-1351 缸盖的技术规格 
项目  数量  零件  技术规格说明 
5B-7890 管塞  组装前,使用 Loctite C5A 铜防咬合剂润滑螺纹。 
131-0420 缸盖紧固件总成  按照下列步骤拧紧缸盖的螺栓:
组装前,将清洁的发动机机油涂抹到螺栓的螺纹上。
将螺栓 1 至螺栓 8 按图 2 中所示的顺序拧紧至扭矩 30 ± 5 N·m (22 ± 4 lb ft)
再将螺栓 1 至螺栓 8 按图 2 中所示的顺序拧紧至扭矩 200 ± 15 N·m (148 ± 11 lb ft)
再将螺栓 1 至螺栓 8 按图 2 中所示的顺序重新拧紧至扭矩 200 ± 15 N·m (148 ± 11 lb ft)
将螺栓 1 至螺栓 8 按顺序转到 180 ± 5 度角,如图 2 所示。
只有在螺栓 1 至螺栓 8 达到最终扭矩后,才拧紧两只螺栓 (8)。
拧紧两只螺栓 (8) 至扭矩为 55 ± 10 N·m (41 ± 7 lb ft)。 
131-0421 缸盖紧固件总成 
5B-0213 螺栓 

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