992G Wheel Loader and 854G Wheel Dozer Power Train Caterpillar


Wheel Bearings - Adjust

Usage:

854G 1JW



图 1g00103634

终传动和车轮

(1) 心轴。 (2) 座圈。 (3) 车轮。 (4) 螺栓。 (5) 垫片。 (6) 轮毂。

此程序需要 25 到 50 mm (1 到 2 in) 的外径千分尺和行程 50 mm (2 in) 的深度千分尺。

注: 在车轮位于机器上时执行此程序。 必须拆下轮胎和轮缘。

  1. 用外径千分尺测量护圈 (2) 的厚度。 在靠近小量孔的三个位置测量护圈。 记录三个测量值的平均值。

  1. 将密封总成组装在心轴 (1) 和车轮 (3) 中。 将机油涂抹在车轮轴承上。 将车轮轴承和车轮安装在心轴上。



    图 2g00103636

    螺栓拧紧次序

  1. 将轮毂 (6) 安装在心轴上。 将机油涂抹在五个螺栓 (4) 的螺纹上,并用螺栓不加垫片安装护圈 (2) 。 用手将五条螺栓 (4) 安装在图 2 中所示的位置。

  1. 用 110 ± 15 N·m (81 ± 8 lb ft) 的扭矩拧紧护圈中的螺栓 (4) 。 按照图 2 中所示的顺序拧紧螺栓。

  1. 旋转车轮一圈,并将螺栓 (4) 再次拧紧至扭矩 110 ± 15 N·m (81 ± 8 lb ft)。

  1. 松开螺栓 (4) ,使车轮能够在车轮轴承上略微向下滑动。

  1. 用 48 ± 8 N·m (35 ± 6 lb ft) 的扭矩拧紧螺栓 (4) 。 按照图 2 中所示的顺序拧紧螺栓 (4) 。

  1. 旋转车轮一圈,并将螺栓 (4) 再次拧紧至扭矩 48 ± 8 N·m (35 ± 6 lb ft)。

  1. 要测量从护圈到心轴端部的距离,使用深度千分尺。 通过护圈的三个小孔测量距离。

  1. 记录三个深度测量值的平均值。 确定在步骤 1 中测量的平均厚度与在步骤 9 中测量的平均深度的差值。 差值为护圈和心轴端部的间隙。

  1. 从步骤 10 中确定的间隙中减去 0.15 mm (.006 in)。 该测量值为必须安装的垫片 (5) 厚度。

    注: 垫片厚度与步骤 11 中提供的厚度偏差必须在 0.025 mm (.001 in) 以内。

  1. 拆下护圈 (2) 。 安装必要数量的垫片 (5) 。

  1. 安装护圈 (2) 和螺栓 (4) 。 从护圈顶部开始。 将螺栓均匀上紧到 475 ± 60 N·m (350 ± 45 lb ft) 的扭矩。

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