C4.2 and C6.4 Engines for Caterpillar Built Machines Caterpillar


Engine Oil Pump - Inspect

Usage:

320D A6F
如果机油泵的任何零件磨损到足以影响机油泵性能的程度,则必须更换机油泵。

进行以下步骤来检查机油泵。 有关间隙和扭矩的信息,请参阅技术规格, "发动机机油泵"。

  1. 卸下发动机机油泵盖。 请参阅拆解和组装, "发动机机油泵 - 拆卸"。

  1. 清洁所有零件。 检查金属中有无裂纹或其它损坏。



图 1g01432433

发动机机油泵

(1) 从动齿轮组件

(2) 驱动齿轮组件

(3) 机油泵齿轮

(4) 惰轮组件

(5) 心轴


注意

操作之前,必须使用干净的发动机机油润滑泵体,并且泵必须能灵活运转,否则就会导致部件的损坏。


注: 低怠速时可接受的最低机油压力为 48 kPa (7 psi)。

测量机油泵齿轮与惰轮之间的齿隙。

注: 如果齿隙超过 0.35 mm (0.014 in),请更换齿轮。

注: 如果卸下机油泵齿轮,则机油泵齿轮和驱动齿轮组件变为不可维修。




图 2g01432436

(3) 机油泵齿轮

注: 不要用喷枪。

将机油泵齿轮加热到 180 °C 到 220 °C (356 °F 到 428 °F) 并支撑驱动齿轮轴的末端以安装机油泵齿轮。 按下机油泵齿轮,直到机油泵齿轮与该轴末端平齐。




图 3g01432439

(6) 机油泵齿轮壳体

测量机油泵齿轮组件的长度差值。 测量机油泵壳体的深度。

注: 如果该间隙超过维修极限 0.150 mm (0.0059 in),请更换机油泵齿轮组件。

用塞尺测量机油泵齿轮和机油泵壳体之间的间隙。

注: 如果该间隙超过维修极限 0.100 mm (0.0039 in),请更换机油泵齿轮组件。




图 4g01432441

(6) 机油泵齿轮壳体

(7) 盖

测量位于盖 (7) 和机油泵壳体 (6) 中的轴孔内径。 测量轴孔。

注: 如果该间隙超过维修极限 0.150 mm (0.0059 in),请更换机油泵齿轮组件、盖或机油泵壳体。

注: 请将驱动齿轮和从动齿轮作为一个组件进行更换。




图 5g01432444

(5) 心轴

(8) 惰轮衬套

测量惰轮衬套内径。

测量心轴直径。

清洁机油泵盖 (7) 表面。 将盖安装在机油泵壳体 (6) 上。 安装机油泵盖的螺栓。

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