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Questo smontaggio non è una guida di riparazione. Per riparare il tuo Dewalt Impact driver DCF840, usa il nostro manuale di assistenza.

  1. Dewalt Impact driver DCF840 Teardown, Complete tool and battery: passo 1, immagine 1 di 2 Dewalt Impact driver DCF840 Teardown, Complete tool and battery: passo 1, immagine 2 di 2
    • This guide covers the complete tool and battery.

  2. Dewalt Impact driver DCF840 Teardown, Opening the tool: passo 2, immagine 1 di 1
    • Remove the 8 screws holding the two halves together.

  3. Dewalt Impact driver DCF840 Teardown, Internal mechanism: passo 3, immagine 1 di 2 Dewalt Impact driver DCF840 Teardown, Internal mechanism: passo 3, immagine 2 di 2
    • Battery Contacts

    • Potted Circuit

    • Brushless Motor

    • Impact Gearbox

  4. Dewalt Impact driver DCF840 Teardown, Gearbox removed: passo 4, immagine 1 di 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: passo 5, immagine 1 di 3 Dewalt Impact driver DCF840 Teardown, Trigger mechanism: passo 5, immagine 2 di 3 Dewalt Impact driver DCF840 Teardown, Trigger mechanism: passo 5, immagine 3 di 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: passo 6, immagine 1 di 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: passo 7, immagine 1 di 3 Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: passo 7, immagine 2 di 3 Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: passo 7, immagine 3 di 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: passo 8, immagine 1 di 1
    • 20V battery at full charge

    • Nominally around 18.5V

  9. Dewalt Impact driver DCF840 Teardown, Splitting battery case: passo 9, immagine 1 di 1
    • Remove four screws to open battery

    • Spring for latch to lock battery into tool

  10. Dewalt Impact driver DCF840 Teardown, Battery details: passo 10, immagine 1 di 2 Dewalt Impact driver DCF840 Teardown, Battery details: passo 10, immagine 2 di 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

Membro da: 01/08/23

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