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소개

Bad grounds on the W123 can cause all sorts of issues, from hard starts, to erratic function of electrical components. One way to help reduce this issue is to replace the ground strap on your battery with a new one, and perhaps even one that is larger than the one from the factory.

도구

  1. Mercedes W123 Battery Ground Cable Replacement, Disconnect the battery: 1 단계, 이미지 1/2 Mercedes W123 Battery Ground Cable Replacement, Disconnect the battery: 1 단계, 이미지 2/2
    • Start by disconnecting both battery terminals, beginning with the negative (-) side, which travels just a few inches to a bolt attaching the other end to the car's body.

    • Never remove your positive (+) cable first or you risk injury from electric shock.

  2. Mercedes W123 Battery Ground Cable Replacement, Remove the old ground cable: 2 단계, 이미지 1/1
    • Loosen and remove this 13mm bolt that holds the cable to the metal of the car's chassis.

    • Now remove the old ground cable.

  3. Mercedes W123 Battery Ground Cable Replacement, Install the new cable: 3 단계, 이미지 1/2 Mercedes W123 Battery Ground Cable Replacement, Install the new cable: 3 단계, 이미지 2/2
    • You can see here that the new ground cable is substantially thicker. It is a 2 gage cable. The ends are also crimped better, protecting the inner wire from corrosion.

    • This cable is also a bit longer than the old one, giving some more wiggle room.

  4. Mercedes W123 Battery Ground Cable Replacement: 4 단계, 이미지 1/1
    • Install the new ground cable, using the new captive bolt, and nut, that came with it.

결론

Once you've finished, consider covering the terminal where the cable attaches to the battery in a silicone dielectric grease to prevent corrosion.

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Nicolas Siemsen

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