Pistons and Connecting Rods - Remove and Install
开始:
- 拆下缸盖。
- 拆下发动机油底壳。
注: 请参阅技术规格 UENR3421 "发动机设计",了解非指定的发动机扭矩值。
- 转动曲轴,直至曲柄销处于底部中心位置。
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图 1 g02797660 - 拆下螺栓 (2) 和连杆盖 (1)。
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图 2 g02797658 - 小心地将活塞 (3) 和连杆从缸体 (4) 的孔推开。
- 连杆和连杆盖侧面应有浸蚀编号 (X)。 连杆和连杆盖上的编号必须相互匹配。 确保标记连杆和连杆盖的正确位置。 如有必要,在连杆和连杆盖上做出一个临时的标记来识别缸号。
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图 3 g02797689 - 拆下活塞 (3) 和连杆 (5)。
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所需工具 | |||
工具 | 零件号 | 零件描述 | 数量 |
A | 1U-6684 | 活塞环压缩器 | 1 |
- 检查活塞 (3) 和连杆组件 (5)。
- 在缸径、活塞环、活塞的外表面和轴瓦上涂覆清洁的发动机机油。
注: 执行间隙检查时,安装干燥的连杆轴瓦。 有关正确步骤,请参阅拆解和组装, "轴承间隙 - 检查"。 最终组装期间,将清洁的发动机机油涂覆在连杆轴瓦上。
注: 确保已将活塞和连杆组件安装在正确的气缸中。
Show/hide table图 5 g03375806 Show/hide table图 6 g02797721 注: 安装过程中,将活塞 (3) 表面上的箭头 (3A) 朝向发动机燃油泵侧放置。
- 将工具 (A) 安装到活塞 (3) 上。
注: 确保工具 (A) 安装正确,活塞 (3) 能顺利地从工具滑出。
Show/hide table图 7 g02797658 - 小心地将活塞 (3) 和连杆组件推入缸体 (4) 的孔并推到曲柄销上。
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图 8 g02797660 - 将连杆盖 (1) 安装到连杆上。
注: 确保连杆盖 (1) 上的蚀刻编号 (X) 与连杆上的蚀刻编号 (X) 相匹配。 确保连杆盖的朝向正确。 上下轴瓦的定位凸舌应在同一侧。
注: 请勿重复使用旧连杆螺栓来固定连杆盖。
- 在螺栓螺纹上涂抹干净的发动机机油并将新螺栓 (2) 安装到连杆上。 拧紧螺栓 (2) 至扭矩为
69 to 73 N·m (51 to 54 lb ft) 。 - 确保连杆组件安装后有侧隙。 转动曲轴,确保没有卡滞。
- 重复步骤 1 至 7,安装其余的活塞和连杆。
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图 4 | g02797689 |
结束:
- 安装发动机油底壳。
- 安装缸盖。
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