3176C and 3196 Engines for Caterpillar Built Machines Caterpillar


Cylinder Block

Usage:

140H 126



图 1g01413469

(1) 缸套的孔径

(A) 定位销比缸体端部长出以下距离。 ... 10.0 ± 0.5 mm (0.39 ± 0.02")

(B) 定位销比缸体端部长出以下距离。 ... 10.0 ± 0.5 mm (0.39 ± 0.02")

(D) 定位销比缸体端部长出以下距离。 ... 28.0 ± 0.5 mm (1.10 ± 0.02 in)




图 2g01413742

C-C 部分

安装缸套之前缸体中的孔的尺寸:

尺寸 (E) ... 151.50 ± 0.03 mm (5.965 ± 0.001 in)
尺寸 (F) ... 149.80 ± 0.30 mm (5.898 ± 0.012 in)
尺寸 (G) ... 148.00 ± 0.03 mm (5.827 ± 0.001 in)
尺寸 (H) ... 141.90 ± 0.15 mm (5.587 ± 0.006 in)



图 3g01413748

缸体前端面

表面任何 150 mm (5.9 in) 区域内,缸体顶部接触面的平整度必须在 0.05 mm (0.002 in) 范围内。

(2) 固定活塞冷却喷嘴的螺栓扭矩 ... 30 ± 7 N·m (22 ± 5 lb ft)

(3) 装入缸体之前,将 6V-6640 密封胶 涂抹在杯塞的外径上。 将杯塞安装至如下深度。 ... 1.25 ± 0.25 mm (0.049 ± 0.010 inch)

按照以下步骤安装主轴承盖螺栓 (4) :

  1. 主轴承盖从 1 到 7 编号。 确保将主轴承盖安装在正确方位。 主轴承盖上的零件号必须朝向右侧和缸体的前面。 将主轴承盖在缸体中正确定向。 如果盖定向正确,缸体和主轴承盖中的键槽应相邻。

    注: 用 SAE 30 机油或钼润滑脂润滑主轴承盖螺栓的螺纹和垫圈表面。

  1. 将主轴承盖螺栓拧紧至扭矩为 95 N·m (70 lb ft)。

  1. 在每一个螺栓和盖上作对齐标记。

  1. 顺时针方向将螺栓再转一圈至 90 度。

(5) 主轴承盖

主轴承盖的宽度 ... 175.000 ± 0.020 mm (6.8897 ± 0.0008 in)
缸盖上的主轴承盖宽度 ... 175.000 ± 0.018 mm (6.8897 ± 0.0007 in)

(J) 凸轮轴孔径 ... 81.000 ± 0.015 mm (3.1890 ± 0.0006 in)

(K) 定位销比缸体顶部表面长出以下距离。 ... 10.0 ± 0.5 mm (0.39 ± 0.02")

(M) 曲轴孔中心线到缸体上表面之间的距离 ... 387.00 ± 0.15 mm (15.236 ± 0.006 in)

(N.) 缸体中用于 7 个主轴承的孔径 ... 116.000 ± 0.013 mm (4.5669 ± 0.0005 in)

(P) 曲轴中心线到缸体下表面之间的距离 ... 120.0 mm (4.72 in)

凸轮轴轴承位置




图 4g01413770

剖面 L-L

将套筒轴承安装在缸体上的规定位置。 下列距离测量自缸体的前表面。

尺寸 (R) ... 954.1 mm (37.56 in)
尺寸 (S) ... 815.2 mm (32.09 in)
尺寸 (T) ... 659.2 mm (25.95 in)
尺寸 (U) ... 503.2 mm (19.81 in)
尺寸 (V) ... 347.2 mm (13.67 in)
尺寸 (W) ... 191.2 mm (7.53 in)
尺寸 (X) ... 35.2 mm (1.39 in)


注意

必须把凸轮轴轴承安装到正确位置。 不这样做的话可能导致发动机损坏。





图 5g01413787

截面 Y-Y

(6) 轴承接头

(AB) 将套筒轴承 (7) 的油孔定位至以下角度。 ... 45 度




图 6g01413792

截面 Z-Z

(8) 轴承接头

(AC) 将套筒轴承 (9) 的油孔定位至以下角度。 ... 45 度




图 7g01413796

截面 AA-AA

(10) 轴承接头

(AD) 将套筒轴承 (11) 的油孔定位至以下角度。 ... 115 度

注: 1 号套筒轴承到 6 号套筒轴承的宽度为 33.4 ± 0.5 mm (1.31 ± 0.02 in)。 7 号套筒轴承的宽度为 28.0 ± 0.5 mm (1.10 ± 0.02 in)。 1 号套筒轴承的内径上有一条宽度为 5.0 ± 0.5 mm (0.20 ± 0.02 in) 的单槽。 2 号套筒轴承到 6 号套筒轴承的外径上的单槽宽度为 8.0 ± 0.5 mm (0.32 ± 0.02 in)。 7 号套筒轴承的外径上有一条宽度为 3.2 ± 0.5 mm (0.13 ± 0.02 in) 的单槽。

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