3500B Engines and 776D, 777D, 784C, 785C, 789C, 793C and 793D Off-Highway Truck/Tractors Caterpillar


Engine Oil Scavenge Pump

Usage:

785C 1HW


图 1g01471861


注意

操作之前,必须使用干净的发动机机油润滑泵体,并且泵必须能灵活运转,否则就会导致部件的损坏。


表 1
技术规格 - 8N-9164 发动机扫油泵 
项目  数量  零件  技术规格说明 
7N-5052 齿轮  长度为 84.000 ± 0.015 mm (3.3071 ± 0.0006 inch)。 
扫油泵体中新齿轮孔的深度为 84.150 ± 0.020 mm (3.3130 ± 0.0008 inch)
161-2509 驱动轴  直径为 31.742 ± 0.008 mm (1.2497 ± 0.0003 inch)。 
安装前衬套中新驱动轴的孔径为 31.837 ± 0.070 mm (1.2534 ± 0.0028 inch)
自惰轮轴组件末端至齿轮端面的距离为 34.0 ± 0.5 mm (1.34 ± 0.02 inch)。 
1W-6005 衬套  2W-6895 扫油泵泵体中的安装深度为 1.5 ± 0.5 mm (0.06 ± 0.02 inch)。 
7W-1017 轴  直径为 31.742 ± 0.008 mm (1.2497 ± 0.0003 inch)。 
安装前衬套上新惰轮轴的孔径为 31.837 ± 0.070 mm (1.2534 ± 0.0028 inch)
0S-0484 螺栓  采用下述步骤拧紧螺栓: 
将驱动齿轮安装到驱动轴组件前,清洁轴和齿轮孔。
1. 敲打驱动齿轮以座合驱动齿轮的锥形部分。
2. 拧紧螺栓至扭矩 100 ± 20 N·m (75 ± 15 lb ft)
3. 重复此步骤直到扭矩不再变化。


图 2g02596558

表 2
技术规格 - 8N-9164 发动机扫油泵 
项目  数量  零件  技术规格说明 
从中线穿过轴承孔的衬套接头位置为 45 ± 15 度。 
4M-3248 空心定位销  空心定位销的延伸长度为 6.4 ± 0.5 mm (0.25 ± 0.02 inch)。 
1W-6005 衬套  7N-8814 扫油泵盖上的衬套安装深度为 1.5 ± 0.5 mm (0.06 ± 0.02 inch)。 

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