In many automotive and mechanical applications, it becomes critical to have a specific torque amount for bolts that differ in size or are fastening important components.
A torque wrench is designed to indicate when a particular torque spec has been reached when tightening a bolt, so that the user can ensure the accuracy of that torque amount. A torque wrench is typically much longer than a standard ratchet or breaker bar so as to provide enough leverage to reach high torque amounts however, there are many different sizes in torque wrenches for a variety of different applications.
Step 1 - Before You Begin
Before using a ToolPRO torque wrench for the first time, or after a prolonged period without use, your torque wrench must be reused for a number of times.
To do this, set the torque on the wrench to a high torque setting and activate it five to ten times to ensure that the internal parts are free and well lubricated for maximum accuracy.
Step 2 - Unlocking The Torque Wrench
Next unlock the adjuster by sliding it towards the back of the tool.
Step 3 - Setting The Torque
Now you are ready to set the torque required, this can usually be found in the workshop manual of the vehicle you are working on, or the specifications of the part.
The markings on the handle are different increments for each size wrench:
- 1/2" - 1.0Nm
- 1/4" - 0.5Nm
- 3/8" - 0.2Nm
To get a value down to the single unit:
- Twist the handle to the closest marking from the handle (increments above)
- Line up the zero with the centre line.
- Turn the adjuster to the single digit you require.
If you are working in foot pounds turn the torque wrench over and use the foot pounds scale.
Keep in mind that the single digit scale does not apply to foot pound measurements.
Step 4 - Locking The Torque Wrench
Once your torque value is set, slide the lock back up into the locking position.
Step 5 - Tightening Up
Then proceed to tighten up the bolt as needed. You can use the ratcheting mechanism in the torque wrench like you would with any wrench, to help you get the bolt close to the correct torque quickly.
Step 6 - Torquing Up
Once the fastener becomes tight, apply steady, even pressure until the torque wrench clicks. You will both hear, and feel this click through the torque wrench.
Once this occurs - release and apply pressure gently until the torque wrench clicks a few more times to ensure that you have reached the correct tension.
Once you have ensured that the torque has been applied, you're done, and have successfully torqued the job.
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