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Sockets, Extensions, Ratchets, Impacts, Torque sticks, Torque wrenches, Torx drivers
TO GET ACCURATE TORQUE READINGS:
Your torque wrench is a precision instrument. Given proper care it should give many years of satisfactory use. For best results and accurate readings, follow these instructions.
Torqometers
1. Each time the Torqometer is used, be sure the dial and pointer are set correctly.
2. To make it easier to read the dial, it is possible to place the pointer in any desired position. Turn the dial unitl the pin bears against the pointer. Then turn both the pin and the pointer 1/4 turn past the position desired. Finally, turn the dial in the other direction. The pointer will follow the pin back until it reaches the desired position.
3. Set the dial of the Torqometer by using either of the following methods.
Method A:
.a) Turn the dial until the pointer is on zero.
.b) Place the Torqometer on the fastener.
.c) Pull until the pointer reaches the torque required.
.d) Make sure the pointer returns to zero. If not, re-set the dial and pull again.
Method B:
.a) Turn the dial until the pointer is at the mark required. (On right hand threads, set to the left of zero - on left hand threads, set to the right of zero.)
.b) Place the Torqometer on the fastener.
.c) Pull until the pointer reaches zero.
.d) Make sure the pointer returns to the pre-set value. If not, re-set the dial and pull again.
5. For an accurate reading, the final turn of the fastener should be made with the Torqometer.
6. The hub of the pointer contains a clutch which allows the stem to turn within the hub if a sudden impact occurs. This important safety feature protects the dial mechanism from shock damage. If a fastener suddenly breaks, it may change the pointer setting. Reset the dial and proceed as before.
7. Work on fasteners with lubricated threads.
8. A Torqometer does not need lubrication. Do not attempt to oil it.
Click-Type Torque Wrenches
The correct amount of torque has been applied when the wrench makes an audible click while the handle moves freely for a few degrees. This combined sound and movement indicate that the selected torque has been reached. The torque wrench can be used for either clockwise or counter-clockwise application. It is not necessary to re-set the wrench unless a different torque setting is desired.
To Set the Desired Torque:
1. Unlock the torque wrench setting by turning the lock ring to the right (clockwise viewed from the bottom). An arrow above the lock ring also indicates how to unlock the torque wrench.
2. The desired torque can be set by turning to the number indicated on the barrel. Line up the zero on the sleeve with the center line on the barrel (See figure 1). Then add the reading obtained by turning the sleeve clockwise as shown in figure 2.
3. Lock the torque setting by turning the lock ring left (counter-clockwise), as shown by the arrow above the lock ring. The torque wrench is then ready for use.
4. The small hex screw in the lock ring can be tightened down to prevent the lock ring from moving when a series of fasteners must be torqued evenly. Never attempt to change torque settings without first loosening this set screw so that the lock ring moves freely.
Note: Models with metric markings can be set as explained above for direct readings in kilograms-meter or newton-meters.
A Few suggestions:
1. If the torque wrench has not been used for some time, operate it several times to re-distribute a thin film of lubricant on the working parts.
2. To assure an accurate torque application, keep your hand centered on the handle grip while using the torque wrench.
3. Don't forcibly unscrew the handle grip below the lowest torque reading.
4. Don't forcibly turn the handle grip with the lock ring in the "Lock" position. This could damage the locking device.
5. Do not apply more torque than the rated capacity of the torque wrench.
6. Always store the torque wrench with the torque setting in a low position.
If your Torqometer or Snap-on Click-Type torque wrench needs repairs, either send it to the nearest Snap-on Branch Office, or give it to your Snap-on representative. Do not attempt to repair it yourself. The torque wrench will be sent to an authorized Snap-on Repair Center where it will be put in first-class condition, (or replaced if necessary). During the 90-day guarantee period, no charges will be made for repairs unless they are caused by obvious signs of abuse. A nominal charge for repairs not covered by the guarantee will be made on the basis of actual cost. The repaired torque wrench will carry a new 90-day guarantee. A series of torque wrench testers is available from Snap-on for checking the accuracy of torque wrenches. See your Snap-on representative for more information on torque wrench testers.
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