Cylinder Drift - Check - Loaded Bucket
注: 发动机转速和 / 或测试期间所用的机器配置可能对测试结果产生影响。 有关此项测试所用的发动机转速，请参阅测试和调整, "发动机性能 - 测试（发动机转速）"。 有关此项测试所用的机器配置，请参阅测试和调整, "操作检查"。
注: 执行操作检查之前，必须根据卸压阀压力技术规范设定卸压阀压力。 请参阅测试和调整, "技术规范"。
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| 所需工具 | |
|---|---|
| 说明 | 数量 |
| 卷尺 | 1 |
| 秒表 | 1 |
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 | |
| 图 1 | g00298378 |
- 将机器停放在水平地面上。 请参阅插图 1。
- 装载铲斗。
铲斗装载重量
- 345D 和 349D ... 2400 kg (5290 lb)
- 345D L 和 349D L ... 2550 kg (5620 lb)
- 345D 和 349D ... 2400 kg (5290 lb)
- 提升动臂，直到顶部斗杆销和底部斗杆销在同一高度。
- 将铲斗油缸完全伸出。
- 将斗杆油缸完全回缩。
- 将斗杆油缸连杆从完全收回位置伸出 70 mm (2.8 in)。
- 测量每个油缸上油缸销之间的长度。
- 关闭发动机。
- 将机器停放在此位置三分钟。 测量每个油缸上油缸销之间的长度，求得油缸沉降。
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| 油缸沉降（负载铲斗） | |||
|---|---|---|---|
| 项目 | 新机 | 翻新 | 维修极限 |
| 动臂油缸 | 6.0 mm (0.24 in) 或更小 |
12.0 mm (0.47 in) 或更小 |
24.0 mm (0.94 in) 或更小 |
| 斗杆油缸 | 12.0 mm (0.47 in) 或更小 |
18.0 mm (0.71 in) 或更小 |
30.0 mm (1.18 in) 或更小 |
| 铲斗油缸 | 30.0 mm (1.18 in) 或更小 |
45.0 mm (1.77 in) 或更小 |
75.0 mm (2.95 in) 或更小 |
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