CDI Torque TORQUE WRENCHES Micro-Adjustable Click Type - Manual (Page 8)

Page 4
OTHER REQUIRED MATERIALS
Torque Seal (Part # 10-1100)
INSPECTION
Inspect all wrenches repaired to determine that they are in an operational condition by
visually inspecting for worn, broken, cracked or damaged parts. Replace parts not found
to be in satisfactory condition.
Some torque wrenches are abused or damage beyond repair. The most common abuse is
using the wrench as a breaker bar to loosen a bolt or nut. This type of misuse is evident if
the tube or the drive is bent in the counterclockwise direction in relation to the tube or
marks from a cheater bar are on the tube or handle. DO NOT REPAIR the wrench if it
shows signs of this type of misuse. The component parts may be permanently damaged.
The SAFETY and INTEGRITY of the wrench could be impaired. Recommend that the
wrench be replaced.
ACCURACY VERIFICATION AND MINOR CALIBRATION PROCEDURE
This procedure is to be used to check the accuracy and, if necessary, perform a minor
adjustment on calibration. It must also be used after a major calibration.
There are two major international standards that establish torque wrench accuracy
requirements. They are ASME B107.14 M Hand Torque Tools (American Society of
Mechanical Engineers) and ISO 6789 Hand Torque Tools – Requirements and Test
Methods (International Organization for Standardization). Both standards are recognized
as established accuracy test methods and referenced in this section. ASME and ISO
standards are subject to review and changes. The repair manual will be reviewed and
revised periodically but may not reflect the latest revisions of the specifications listed
above.
ASME B107.14M
1. Preload the wrench by setting the wrench at 50% of full scale and operating three
times in the direction of the test.
2. Reset handle to 20% of full scale. Place square drive in tester. Adjust the loading
point of the tester until the load is being applied in the center of the handle.
CAUTION