A technician is preparing to torque critical automotive fasteners to manufacturer specifications using a click-type micrometer torque wrench. What is the correct chronological sequence of steps to properly set up, operate, and store the tool?
- 1Locate the required fastener torque specification and sequence in the vehicle service manual.
- 2Disengage the handle lock mechanism and rotate the micrometer handle until the scale aligns with the specified torque value.
- 3Re-engage the locking collar on the handle to secure the micrometer setting during use.
- 4Apply a smooth, steady pulling force on the handle until an audible and tactile click occurs, then immediately stop.
- 5Wind the micrometer handle back down to its lowest graduation mark before returning the tool to its storage case.
Cevap
The correct procedural order is: (1) Locate the torque specification in the service manual, (2) Disengage the handle lock and adjust the micrometer scale, (3) Re-engage the locking collar, (4) Apply steady pulling force until the click occurs, and (5) Wind the handle back down to the lowest setting for storage.
The procedure begins by referencing the manufacturer torque specifications in the service manual. Next, the tool's lock mechanism must be opened to allow the micrometer handle to be dialed to the target value. The lock must then be re-engaged to prevent handle rotation during use. Torque is applied smoothly in a pulling motion until the tool clicks, at which point force must cease immediately. Finally, the tool's internal spring tension must be relieved down to the lowest graduated mark before storing to maintain calibration accuracy.
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Anahtar Kavram
Click-Type Torque Wrench Operation and Maintenance Sequence
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