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


Relief Valve (Ripper)

Usage:

120H 124



图 1g01391912

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

安全阀压力设定 ... 27600 ± 700 kPa (4000 ± 100 psi)

油的流量 ... 2.0 ± 0.2 L/min (0.5 ± 0.1 US gpm)

(1) 座圈组件每转一圈的压力变化 ... 5070 kPa725 (psi)

注: 拧紧锁紧螺母 (2) 时,固定住座圈组件 (1) 。

(2) 锁紧螺母的扭矩 ... 20 ± 2 N·m (180 ± 18 lb in)

(3) 2J-6089 弹簧

在试验力下的长度 ... 36.25 mm (1.427")
试验力 ... 278 ± 14 N (63 ± 3.1 lb)
试验后的自由长度 ... 44.12 ± 0.50 mm (1.737 ± 0.020")
外径 ... 12.5 mm (0.49")

(4) 使用密封的润滑剂稍微润滑 O 形密封圈。

Caterpillar Information System:

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