Valve Depth - Inspect
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| 所需工具 | |||
| 工具 | 零件号 | 零件描述 | 数量 |
| A | 8T-0455 | 缸体凸出量工具组 | 1 |
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 | |
| 图 1 | g00323908 |
工具 (A) (1) 千分表 (2) 仪表体 (3) 仪表块 | |
- 使用工具 (A) 检查进气阀和缸盖表面下的排气阀深度。 使用仪表块 (3) 将千分表 (1) 归零。
- 确保阀门表面清洁。 确保缸盖底面清洁。 确保缸盖未扭曲。 缸盖平面度的测量步骤，请参阅测试和调整缸盖-, "检查"。
- 安装仪表体 (2) 和千分表 (1) ，以测量阀深度。 在拆卸阀弹簧之前测量进气阀和排气阀的深度。
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| 图 2 | g00323909 |
典型实例 阀门深度的测量 (1) 千分表 (2) 仪表体 | |
- 新发动机的最小和最大限制：
进气门
- 最低 ... 0.905
mm (0.0356 in)
- 最高 ... 1.163 mm (0.0458 in)
排气门
- 最低 ... 0.876
mm (0.0345 in)
- 最高 ... 1.131 mm (0.0445 in)
- 最低 ... 0.905
mm (0.0356 in)
- 已运行的发动机出现维修磨损。 如果旧发动机缸盖表面下的阀深度超过维修磨损的规格，则必须更换以下部件。
- 气门
- 阀镶圈
进气阀的磨损限制 ... 1.41 mm (0.0555 in)
排气阀的磨损限制 ... 1.38 mm (0.0543 in)
- 气门
- 检查各阀是否有裂缝。 检查阀杆是否磨损。 确保在阀导管中正确配备阀门。 关于检查阀导管的步骤，请参阅测试和调整阀导管 -, "检查"。
- 检查阀弹簧上的负载。 阀弹簧正确长度和规格，请参阅规格缸盖, "阀"。
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