745 and 740 GC & 740 EJECTOR Articulated Truck Systems Caterpillar


Hoist Control Valve

Usage:

745 3F6



图 1g03785099

表 1
374-7186 控制阀总成 的技术规格    
项目     数量     零件     技术规格说明    
1     2     198-2914 螺母     拧紧至扭矩为
20 ± 3 N·m (177 ± 27 lb in)。    
2     2     313-7668 电磁阀总成     拧紧至扭矩为
35 ± 3 N·m (26 ± 2 lb ft)。    
3     1     425-0575 车斗     拧紧至扭矩为
145 ± 15 N·m (107 ± 11 lb ft)。    
4     1     2S-2596 弹簧     在试验力下的长度为
7.9 mm (0.31 in)。
试验力为
4.226 ± 0.338 N (0.950 ± 0.076 lb)。
试验后的自由长度为
33.3 mm (1.31 in)。    
5     1     265-3342 螺塞     拧紧至扭矩为
100 ± 10 N·m (74 ± 7 lb ft)。    
6     1     300-1378 安全阀总成     拧紧至扭矩为
100 ± 10 N·m (74 ± 7 lb ft)。    
7     2     207-7438 弹簧     在第一个测试力下的长度为
49.16 mm (1.935 in)。
第一个测试力为
255 ± 20 N (57 ± 4 lb)。
在第二个测试力下的长度为
37.38 mm (1.472 in)。
第二个测试力为
1020 ± 82 N (229 ± 18 lb)。
试验后的自由长度为
53.08 mm (2.090 in)。    
8     1     173-3993 螺塞组件     装配前,在螺纹上涂抹蓝色 Loctite 243。    
9     2     207-7437 弹簧     在第一个测试力下的长度为
33.95 mm (1.337 in)。
第一个测试力为
254.5 ± 20.0 N (57.2 ± 4.5 lb)。
在第二个测试力下的长度为
25.46 mm (1.002 in)。
第二个测试力为
1018 ± 82 N (229 ± 18 lb)。
试验后的自由长度为
36.78 mm (1.448 in)。    

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