How to use a socket wrench and torque wrench

Teach: How to use a socket wrench and torque wrench

What to say

To use a socket wrench, pick the socket that fits the nut snugly in the right system, metric or inch, click it onto the ratchet, set the direction switch, and turn with steady pressure. A torque wrench is for the final tightening: set it to the number in the manual and stop the moment it clicks. Never use a torque wrench to loosen anything.

What to show, in order

1. Read the size stamped on the nut or bolt, or try sockets until one slides on with no wobble.
2. Check whether the fastener is metric or inch; a nearly fitting socket rounds off corners.
3. Push the socket onto the ratchet until it clicks, and add an extension if the nut is hard to reach.
4. Set the ratchet's direction switch: righty tighty, lefty loosey, as seen from the socket end.
5. Pull the handle toward you with steady force rather than sudden jerks, keeping the socket square on the nut.
6. For a final torque, set the torque wrench to the value in the manual, pull smoothly, and stop at the first click.
7. Wind the torque wrench back to its lowest setting before you store it.

When to stop and call a professional

• The fastener is on brakes, steering, suspension or a wheel you are not sure how to torque.
• A bolt is seized, rounded or snaps.
• You cannot find the torque value for a safety-critical part.

The check question

Ask: What should you do the moment a torque wrench clicks? Answer: Stop pulling

From EveryManKnows. General information, not professional advice.