793D Off-Highway Truck Hydraulic System Caterpillar


Control Valve (Hoist and Brake Cooling)

Usage:

793D FDB



图 1g01194353

俯视图




图 2g01194319

剖面 A-A

(1) 两只螺母的扭矩 ... 35 ± 3 N·m (310 ± 25 lb in)

(2) 177-1405 弹簧

在试验力下的长度 ... 8.2 mm (0.32 in)
试验力 ... 18.41 ± 0.55 N (4.14 ± 0.12 lb)
试验后的自由长度 ... 12.29 mm (0.4839 in)
外径 ... 9.30 mm (0.3661 in)

(3) 177-1403 弹簧

在试验力下的长度 ... 46.0 mm (1.81 in)
试验力 ... 21.00 ± 0.63 N (4.721 ± 0.142 lb)
试验后的自由长度 ... 53.92 mm (2.12 in)
外径 ... 15.24 mm (0.600 in)

(4) 118-5087 弹簧

在试验力下的长度 ... 50.0 mm (1.97 in)
试验力 ... 243 ± 19 N (55 ± 4 lb)
试验后的自由长度 ... 63.5 mm (2.50 in)
外径 ... 35.56 mm (1.400 in)

(5) 118-5086 弹簧

在试验力下的长度 ... 55.0 mm (2.17 in)
试验力 ... 438 ± 35 N (98 ± 8 lb)
试验后的自由长度 ... 76.2 mm (3.00 in)
外径 ... 49.2 mm (1.94 in)



图 3g01194344

B-B 视图




图 4g00103229

剖面 C-C




图 5g00103234

截面 D-D

(6) 7S-8491 弹簧

在试验力下的长度 ... 25.4 mm (1.00 in)
试验力 ... 19.2 ± 1.6 N (4.31 ± 35 lb)
试验后的自由长度 ... 41.1 mm (1.62 in)
外径 ... 30.18 mm (1.188 in)



图 6g00103235

剖面 E-E

(7) 滤网组件的扭矩 ... 13 ± 3 N·m (9.6 ± 2.2 lb ft)




图 7g00515446

F-F 视图

(8) 132-7102 平衡阀

开启压力 ... 6900 + 700 − 0 kPa (1000 + 100 − 0 psi)



图 8g00103238

剖面 G-G

(3) 前制动器机油冷却器安全阀

卸压阀压力设定 ... 790 ± 20 kPa (115 ± 3 psi)
阀体的扭矩 ... 185 ± 15 N·m (136 ± 11 lb ft)

(10) 螺塞的扭矩 ... 125 ± 15 N·m (92 ± 11 lb ft)

(11) 8B-4624 垫片

数量 ... 5
厚度 ... 0.81 mm (0.032 in)

注: 调整这里的垫片数量。

(12) 8B-4624 垫片

数量 ... 7
厚度 ... 0.81 mm (0.032 in)

注: 请勿在此调整垫片数量。

(13) 6J-3380 弹簧

在试验力下的长度 ... 60.5 mm (2.38 in)
试验力 ... 653.9 ± 51.6 N (147.0 ± 11.6 lb)
试验后的自由长度 ... 86.6 mm (3.41 in)
外径 ... 34.95 mm (1.376 in)



图 9g01194378

(14) 109-6918 安全阀

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