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Milwaukee 2780-20 (2) Ball Bearings Replacement

简介

Do you know what happens when your grinder overheats? If not, this is a quick guide on how to change the ball bearings. A ball bearing is a ring consisting of small solid metal balls between a wheel and a fixed axle, in which the rotating parts and stationary parts are separated to reduce friction. A damaged or worn ball bearing will reduce the performance of your grinder and ultimately destroy it completely.

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  1. Milwaukee 2780-20 (2) Ball Bearings Replacement, Trigger Assembly: 步骤 1 中的图像 1，3 Milwaukee 2780-20 (2) Ball Bearings Replacement, Trigger Assembly: 步骤 1 中的图像 2，3 Milwaukee 2780-20 (2) Ball Bearings Replacement, Trigger Assembly: 步骤 1 中的图像 3，3

    • Using a Torx T20 screwdriver, unscrew the four 16mm screws from the case.

    • Switch to the Torx T10 screwdriver, and remove the last 16mm screw from the hilt.

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  2. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 2 中的图像 1，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 2 中的图像 2，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 2 中的图像 3，3

    • Using the Torx T20 screwdriver, unscrew the four 28mm screws located at the bottom (and top) of the gearcase assembly.

    • Remove the two 12mm screws with a Torx T20 screwdriver in order to get to the others.

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  3. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 3 中的图像 1，1

    • Pull apart the housing handles.

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  4. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 4 中的图像 1，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 4 中的图像 2，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 4 中的图像 3，3

    • Lift the trigger assembly off of its mount.

    • Dispose of the old trigger assembly and install the new one.

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  6. Milwaukee 2780-20 (2) Ball Bearings Replacement, (2) Ball Bearings: 步骤 5 中的图像 1，3 Milwaukee 2780-20 (2) Ball Bearings Replacement, (2) Ball Bearings: 步骤 5 中的图像 2，3 Milwaukee 2780-20 (2) Ball Bearings Replacement, (2) Ball Bearings: 步骤 5 中的图像 3，3

    • Using a Torx T20 screwdriver to remove four 6mm screws located on top of the gearcase assembly.

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  7. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 6 中的图像 1，2 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 6 中的图像 2，2

    • Pull the gearcase away from electronic assembly to expose the inside.

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  8. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 7 中的图像 1，2 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 7 中的图像 2，2

    • Using a 3/8 Wrench, Remove the nut located in the center of the Gearcase.

    • The nut and pinion should immediatley come apart from the rotor assembly.

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  9. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 8 中的图像 1，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 8 中的图像 2，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 8 中的图像 3，3

    • Pull the rotor assembly apart from the gearcase casing.

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  10. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 9 中的图像 1，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 9 中的图像 2，3 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 9 中的图像 3，3

    • Using a Torx T15 screwdriver, remove the two 4mm screws to take the bearing retainer off.

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  11. Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 10 中的图像 1，2 Milwaukee 2780-20 (2) Ball Bearings Replacement: 步骤 10 中的图像 2，2

    • Use a hammer to knock out the bearing and begin installing the new one before reassembling.

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结论

To reassemble your device, follow these instructions in reverse order.

另外一个人完成了本指南。

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