Relief Valve (Line)
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图 1 | g01348422 |
注: 该阀控制提升功能的管路压力。
为了获得正确的安全阀压力设置,油温应为 49 ± 3 °C (120 ± 37 °F)。
安全阀压力设置为 38 ± 4 L/min (10.0 ± 1.1 US gpm) ... 27600 ± 400 kPa (4000 ± 58 psi)
注: 固定挡圈组件 (1) ,然后拧紧螺母 (2) 。
(2) 螺母的扭矩 ... 50 ± 7 N·m (37 ± 5 lb ft)
(3) 安全阀的安装扭矩 ... 65 ± 5 N·m (48 ± 4 lb ft)
(4) 4T-4942 弹簧
- 在试验力下的长度 ... 54.3 mm (2.14 in)
- 试验力 ... 1246 ± 100 N (280 ± 22 lb)
- 试验后的自由长度 ... 63.2 mm (2.49 in)
- 外径 ... 15.75 mm (0.620 in)
- 试验力 ... 1246 ± 100 N (280 ± 22 lb)
(5) 在要密封的孔上稍涂润滑剂。
Caterpillar Information System:
247B, 257B, 277B and 287B Multi Terrain Loaders and 216B, 226B, 232B, 236B, 242B, 246B, 248B, 262B and 268B Skid Steer Loaders Maintenance Interval Schedule
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