Impact Wrench, Using
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Removing bolts and nuts using an impact wrench is generally permitted. The exception to this are procedures within an open high-voltage battery. Generally no impact wrench is permitted for these procedures.
If the following requirements are met, using an impact wrench to tighten bolts and nuts is permitted during repair procedures. Electric and compressed air impact wrenches are generally intended here.
Requirements:
- Bolts with locking fluid or self-locking nuts must only be screwed in at low speeds.
- Use a suitable impact wrench with an adjustable speed and torque range.
- Use suitable screwdriver bits near delicate surfaces. For example, use plastic-coated bits on aluminum rims.
- Refer to the Natural Gas Fuel Systems - General Information repair information when working in a natural gas fuel system area.
Application:
- Position the bolts or nuts by hand.
- Only tighten the bolts or nuts with an impact wrench until the head of the bolt or nut contacts the surface and then tighten further using a torque wrench.
- Clean the threaded pins before removing the bolt or nut.