CDI Torque TORQUE WRENCHES Dial Type - Manual (Page 11)

Page 8
Torque wrench readings MUST be obtained by applying force to the center of the handle
(per ANSI & ISO specifications).
ISO6789
1. Preload the wrench by loading the wrench five times in the direction of the test
(either clockwise or counterclockwise).
2. Set the pointer on the zero increment of the scale. The pointer MUST be set in the
same plane as the testing will be performed (horizontal or vertical).
3. Load the wrench until the scale reads at 20% of full scale (example a 100 in. lb.
wrench would be tested at 20 in. lb., which is 20% of full scale). Repeat the test 4
more times. Record all five readings.
4. Load the wrench until the scale reads at 60% of full scale (example a 100 in. lb.
wrench would be tested at 60 in. lb., which is 60% of full scale). Repeat the test 4
more times. Record all five readings.
5. Load the wrench until the scale reads at 100% of full scale (example a 100 in. lb.
wrench would be tested at 100 in. lb., which is 100% of full scale). Repeat the test
4 more times. Record all five readings.
6. Preload the wrench by loading the wrench five times in the opposite direction of
the test already performed (either clockwise or counterclockwise).
7. Set the pointer on the zero increment of the scale. The pointer MUST be set in the
same plane as the testing will be performed (horizontal or vertical).
8. Test the wrench in this direction by following steps 3 through 5. If all of the
readings are within the accuracy requirement no calibration adjustment is
required. If they are not see the section on calibration adjustment.