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Dewalt Impact driver DCF840 Teardown

작성자 Wieli (및 기여자 1명)
게시일: January 29, 2023
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Dewalt Impact driver DCF840 Teardown

작성자 Wieli (및 기여자 1명)
게시일: January 29, 2023
  • 댓글 0
  • 즐겨찾기 1
  • 조회수: 737

분해도

소개

Dewalt 1/4" Impact driver and battery teardown.

해당 분해도는 수리 안내서가 아닙니다. Dewalt Impact driver DCF840 수리는 저희 서비스 설명서를 사용하십시오.

  1. Dewalt Impact driver DCF840 Teardown, Complete tool and battery: 1 단계, 이미지 1/2 Dewalt Impact driver DCF840 Teardown, Complete tool and battery: 1 단계, 이미지 2/2

    • This guide covers the complete tool and battery.

    편집

  2. Dewalt Impact driver DCF840 Teardown, Opening the tool: 2 단계, 이미지 1/1

    • Remove the 8 screws holding the two halves together.

    편집

  3. Dewalt Impact driver DCF840 Teardown, Internal mechanism: 3 단계, 이미지 1/2 Dewalt Impact driver DCF840 Teardown, Internal mechanism: 3 단계, 이미지 2/2

    • Battery Contacts

    • Potted Circuit

    • Brushless Motor

    • Impact Gearbox

    편집

  4. Dewalt Impact driver DCF840 Teardown, Gearbox removed: 4 단계, 이미지 1/1

    • With the Gearbox removed we are left with the motor on one side and the light ring on the other.

    편집

  6. Dewalt Impact driver DCF840 Teardown, Trigger mechanism: 5 단계, 이미지 1/3 Dewalt Impact driver DCF840 Teardown, Trigger mechanism: 5 단계, 이미지 2/3 Dewalt Impact driver DCF840 Teardown, Trigger mechanism: 5 단계, 이미지 3/3

    • Neutral: Trigger Locked

    • Forward

    • Reverse

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

    편집

  7. Dewalt Impact driver DCF840 Teardown, Splitting the gearbox/impact section: 6 단계, 이미지 1/1

    • 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.

    편집

  8. Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: 7 단계, 이미지 1/3 Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: 7 단계, 이미지 2/3 Dewalt Impact driver DCF840 Teardown, Gearbox / Impact section: 7 단계, 이미지 3/3

    • 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

    편집

  9. Dewalt Impact driver DCF840 Teardown, Battery: 8 단계, 이미지 1/1

    • 20V battery at full charge

    • Nominally around 18.5V

    편집

  10. Dewalt Impact driver DCF840 Teardown, Splitting battery case: 9 단계, 이미지 1/1

    • Remove four screws to open battery

    • Spring for latch to lock battery into tool

    편집

  11. Dewalt Impact driver DCF840 Teardown, Battery details: 10 단계, 이미지 1/2 Dewalt Impact driver DCF840 Teardown, Battery details: 10 단계, 이미지 2/2

    • 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)

    편집

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