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How to use a manual torque multiplier!

Replace impact spanners, cheater bars and other inadequate bolting methods!

A manual torque multiplier is engineered for precision tightening and loosening of heavy-duty fastening applications. The desired torque is reached when the multiplier stops delivering torque. As its name suggests, a manual torque multiplier is hand-operated. Therefore, this kind of tool is typically lightweight, portable, and well-suited to job sites where there is no electricity.

  1. Review the torque multiplication factor for the individual model of torque multiplier, then set the wrench based on these specifications. For example, if the desired torque output is 400 lbf.ft and the multiplication factor for the multiplier is 4:1, then you would set the wrench to a torque input of 100 lbf.ft. Make sure you don’t exceed the maximum input torque.

  2. Assemble the socket, “O” ring, and retaining pin.

  3. Do not use an extra long extension or socket.

  4. Place the multiplier on the fastener.

  5. Make sure the multiplier rotates in the required direction.

  6. Check to ensure the wrench also rotates in the correct direction, then place it on the multiplier.

  7. Choose a suitable reaction point.

  8. Tighten the multiplier until you hear a “click.” This indicates the multiplier is now locked on and ready for use.

  9. Don’t strike the anti-wind-up ratchet.

  10. To release the wind-up, follow this sequence:

    • Replace the wrench.

    • Load the torque wrench.

    • Reverse the direction of the anti-wind-up ratchet.

    • Be sure to release the wind-up in a safe and controlled manner.

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