Connecting Rod
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图 1 | g01405580 |
注: 必须小心处理裂解式连杆。 放松连杆盖螺栓时用软钳固定住连杆。 必要时使用软锤轻敲连杆盖。
注: 安装活塞销轴承前,必须对连杆小头进行 175 到 260 °C (347 到 500 °F) 的加热。
(A) 连杆中活塞销轴承的孔径 ... 43.191 ± 0.013 mm (1.7004 ± 0.0005 in)
(B) 轴承组装后活塞销轴承的孔径 ... 40.028 ± 0.008 mm (1.5759 ± 0.0003 in)
(C) 活塞销轴承的轴承接头在任意一侧必须高出中心线以下角度。 ... 12 ± 5 度
(D) 活塞销轴承安装时连杆的加热距离 ... 75 ± 5 mm (3.0 ± 0.2 in)
(E) 连杆孔中心距 ... 200 mm (7.9 in)
(F) 曲轴连杆颈轴承的连杆孔径 ... 75.000 ± 0.013 mm (2.9527 ± 0.0005 in)
(G) 螺栓长度 ... 65.0 ± 0.5 mm (2.56 ± 0.02 in)
注: 测量曲轴孔径前,采用以下程序上紧连杆螺栓。 只有在严格执行上紧程序后才能检查曲轴孔径的尺寸。
- 安装连杆盖之前,利用压缩空气或钢丝刷清理连杆的配合面。 确保不存在裂解连杆过程中残留的松散颗粒。
注: 安装螺栓前,利用 4C-5592 防咬合剂 或干净的机油润滑连杆盖螺栓的安装面。
- 安装新螺栓 (1) 并将新螺栓上紧到 70 ± 5 N·m (50 ± 4 lb ft)。
- 在每条连杆盖螺栓上做出指示标记,并将每条盖螺栓进一步上紧 120 ± 5 度(1/3 圈)。
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