Makita Jack Hammer HM1307CB Brush Holder Replacement

Geschrieben von: Taylor Dixon
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Makita Jack Hammer HM1307CB Brush Holder Replacement

Schwierigkeitsgrad

Moderate

Schritte

12

Zeitaufwand

15 - 30 Minuten

Einleitung

This guide will show you how to replace the brush holder in a Makita HM1307CB jack hammer.

Before you perform this repair, make sure the jack hammer is completely powered down and unplugged.

As you perform this repair, take note of all the screws that have been sealed with threadlocker and be sure to clean them and reapply the same color threadlocker during reassembly.

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    • Remove the following screws:

    • Two Phillips screws

    • Four hex screws

    • These four hex screws are all held in place with threadlocker, and may take quite a bit of torque or even some heat to loosen.

    • During reassembly, clean the residual threadlocker from these screws, then reapply high-strength (red) threadlocker to each one before reinstalling.

    • If you aren't sure how to apply threadlocker, refer to the next step in this guide.

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    • To reapply threadlocker:

    • First, clean the residual threadlocker from each of the screws with some cleaner/degreaser and a stiff brush.

    • Second, apply a couple drops of high-strength threadlocker to the screw sockets.

    • Finally, apply one or two drops of the same high-strength threadlocker to the tip of each screw and reinstall them.

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    • Grab the handle and remove it from the jack hammer.

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    • Remove the two hex screws holding the controller cover in place.

    • During reassembly, clean the residual threadlocker from these screws, then reapply high-strength (red) threadlocker to each one before reinstalling.

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    • Remove the controller cover and the attached power supply cord from the jack hammer.

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    • Remove the six 5 mm hex screws holding the rear cover in place.

    • These six hex screws are all held in place with threadlocker, and may take quite a bit of torque or even some heat to loosen.

    • During reassembly, clean the residual threadlocker from these screws, then reapply high-strength (red) threadlocker to each one before reinstalling.

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    • Lift up the rear cover and remove it from the jack hammer.

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    • Slide the brushes' metal clips off of the golden contact rails.

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    • Use your finger or a pry tool to pull back the spring holding each brush in place and press it against the brush channel to prevent it from snapping back into place on the brush.

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    • Slide the brushes out of their channels to remove them from the brush holder.

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    • Remove the four Phillips screws holding the brush holder in place.

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    • Lift up and remove the brush holder.

    • If you have trouble lifting up the brush holder, you can use a flathead screwdriver or another pry tool to gently pry it up before lifting.

Abschluss

To reassemble your device, follow these instructions in reverse order, taking note of any reassembly tips.

Tinte & Feder

Taylor Dixon

Mitglied seit: 26/06/18

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