3524B Engine for Caterpillar Built Machines Caterpillar


Bearing Clearance - Check

Usage:

3524B 1AW

测量步骤

表 1
所需工具 
工具  零件号  零件名称  数量 
198-9142  塑料间隙尺 
198-9143 塑料间隙尺 
198-9144 塑料间隙尺 
198-9145 塑料间隙尺 


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损並縮短部件使用寿命。


注: 卡特彼勒并不提倡检查轴承的实际间隙,尤其是对于小型发动机。 这是因为检查结果可能不准确,还可能会损坏轴承或轴颈表面。 每个卡特彼勒发动机轴承都要经过具体壁厚质量检查。

注: 测量值应在技术参数范围内,且应使用正确的轴承。 如果在拆解过程中测量了缸体和连杆的曲轴轴颈和孔径,则无需进行进一步检查。 但是,如果技师还是想测量轴承间隙,可使用工具 ( A) 进行测量。 对于小直径轴颈,如果间隙小于 0.10 毫米 (0.004 英寸),则使用工具 (A) 测量可能不准确。


注意

导线、塞尺或量缸表可能会损坏轴承面。


技师必须十分谨慎地正确使用工具 ( A)。 须切记以下几点:

  • 确保轴承背面和孔清洁干燥。

  • 确保轴承锁片正确地固定在锁片槽内。

  • 曲轴与工具 (A) 的接触处不得沾染机油。

  1. 将工具 (A) 置于盖中轴承的顶部。

    注: 工具 (A) 不得伸出轴承边缘。

  2. 使用正确的扭矩参数安装轴承盖。 切勿使用拧紧扳手。 安装轴承盖时需小心谨慎,不得移动轴承。

    注: 安装工具 (A) 时,切勿转动曲轴。

  3. 小心地拆下轴承盖,但不得取下工具 ( A)。 工具 (A) 在轴承盖内或曲轴轴颈上时,测量工具 ( A) 的宽度。 请参考图 1。


    图 1g00473227
    典型示例

  4. 先拆下所有工具 ( A),然后再安装轴承盖。

    注: 使用工具 (A) 测得的读数有时不准确。 例如,用工具 (A) 测量的所有零件实际上并不一样宽。 请大致测量宽度以确保零件符合技术参数范围。 有关正确的间隙,请参考 技术参数, "曲轴"。

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