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Cette vue éclatée n'est pas un tutoriel de réparation. Pour réparer votre Dewalt Impact driver DCF840, utilisez notre manuel de réparation.

  1. Dewalt Impact driver DCF840 Teardown, Complete tool and battery: étape 1, image 1 de 2 Dewalt Impact driver DCF840 Teardown, Complete tool and battery: étape 1, image 2 de 2
    • This guide covers the complete tool and battery.

  2. Dewalt Impact driver DCF840 Teardown, Opening the tool: étape 2, image 1 de 1
    • Remove the 8 screws holding the two halves together.

  3. Dewalt Impact driver DCF840 Teardown, Internal mechanism: étape 3, image 1 de 2 Dewalt Impact driver DCF840 Teardown, Internal mechanism: étape 3, image 2 de 2
    • Battery Contacts

    • Potted Circuit

    • Brushless Motor

    • Impact Gearbox

  4. Dewalt Impact driver DCF840 Teardown, Gearbox removed: étape 4, image 1 de 1
    • With the Gearbox removed we are left with the motor on one side and the light ring on the other.

  5. Dewalt Impact driver DCF840 Teardown, Trigger mechanism: étape 5, image 1 de 3 Dewalt Impact driver DCF840 Teardown, Trigger mechanism: étape 5, image 2 de 3 Dewalt Impact driver DCF840 Teardown, Trigger mechanism: étape 5, image 3 de 3
    • Neutral: Trigger Locked

    • Forward

    • Reverse

    • When selector is neutral this tab keeps the trigger from being depressed

  6. Dewalt Impact driver DCF840 Teardown, Splitting the gearbox/impact section: étape 6, image 1 de 1
    • Gear box fits into housing as a press fit with two clips. Releasing the two clips allows the gear box to be freed from its housing.

  7. Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: étape 7, image 1 de 3 Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: étape 7, image 2 de 3 Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: étape 7, image 3 de 3
    • Planetary gear set: reduce motor speed and increase torque

    • Splines to gear box case

    • Internal teeth for planetary gear set

    • Spring (hard to see) for impact function: base spins and strikes output drive labeled with blue arrow in last picture

  8. Dewalt Impact driver DCF840 Teardown, Battery: étape 8, image 1 de 1
    • 20V battery at full charge

    • Nominally around 18.5V

  9. Dewalt Impact driver DCF840 Teardown, Splitting battery case: étape 9, image 1 de 1
    • Remove four screws to open battery

    • Spring for latch to lock battery into tool

  10. Dewalt Impact driver DCF840 Teardown, Battery details: étape 10, image 1 de 2 Dewalt Impact driver DCF840 Teardown, Battery details: étape 10, image 2 de 2
    • 5 cells nominally 3.7V in series.

    • 0V (GND)

    • 12V (likely for LED light ring)

    • 3.7V (not connected to tool)

    • 18.5V

    • 18.5V (main output)

Wieli

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