Impact Wrench, Using

Note the additional information in the repair information.

Exceptions:

• Impact wrenches are not permitted when working within an open high-voltage battery and when working near natural gas systems. See the General Information.

Removing:

• An impact wrench is generally permitted for removing bolts and nuts.
• Bolts (the bolt head and any projecting threads) and nuts should be cleaned before removing.

Installing:

Using a suitable impact wrench to install bolts and nuts is permitted, as long as the following conditions are met.

• Position the bolts and nuts by hand.
• Only use an impact wrench with an adjustable speed and torque range.
• The impact function of the wrench may not be used.
• The maximum speed must not exceed 300 RPM.
• Use suitable screwdriver bits (such as plastic-coated bits) when working near delicate surfaces.
• Bolts with locking fluid or self-locking nuts must only be installed and removed at low speeds.
• Install or remove bolts and nuts only as far as the stop.
• Bring them to the final tightening specification by hand using a torque wrench.
• For the additional turn, use a torque wrench with a rotation angle function or a fixed wrench.