120H and 135H Motor Graders Hydraulic and Steering System Caterpillar


Relief Valve (Implement)

Usage:

120H 124



图 1g01392315

试验的进口压力 ... 27600 ± 400 kPa (4000 ± 58 psi)

试验的出口压力 ... 70 ± 7 kPa (10 ± 1 psi)

试验压力下的进口流量 ... 38 ± 4 L/min (10 ± 1 US gpm)

为了正确设定安全阀的压力,油温必须为 49 ± 3°C (120 ± 5°F)。

注: 拧紧螺母 (2) 时,固定住座圈组件 (1) 。

(2) 螺母的扭矩 ... 50 ± 7 N·m (37 ± 5 lb ft)

(3) 4T-4942 弹簧

在试验力下的长度 ... 54.3 mm (2.14")
试验力 ... 1246 ± 100 N (280 ± 23 lb)
试验后的自由长度 ... 63.2 mm (2.49")
外径 ... 15.75 mm (0.620")

(4) 使用密封的润滑剂稍微润滑 O 形密封圈。

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