TB Wrench Operation Manual January 2017.qxp

TB (Small Break-Over Wrench) Operating Instructions
Rev 2.2 (1/30/2017)
Ref. Item # 500294
TB “Break-Over” Wrenches
These small production wrenches ‘break-over’ once reaching preset torque setting. Compact and well balanced, these
wrenches have a fixed head attached to it.
Calibrating Torque Wrenches
To calibrate torque wrenches either use a torque tester or torque sensor within the range of the torque wrench. For breakover torque wrenches calibrate torque in “Peak” mode with a digital torque tester or torque sensor. Make sure to apply the
torque slowly and smoothly at the “Load Point Line” near end of the handle.
1. Select a torque tester or torque sensor that covers the torque range of the TB wrench. Connect wrench to the torque
tester or torque sensor using the appropriate adapters as needed (not supplied).
2. Apply torque clockwise slowly until wrench ‘breaks-over’ and note reading.
3. Adjust wrench to required torque setting as described below.
4. Test and repeat adjustment as necessary to obtain desired value.
5. Recalibrate torque wrench at prescribed intervals.
Item # 600020
End Cap
Adjusting Torque Setting
1. Remove plastic end cap from the handle.
2. Insert 3/16 hex key into adjusting screw and turn clockwise to increase
torque and counter clockwise to decrease torque. Verify the torque setting
using a torque tester or torque sensor. Do not adjust torque setting above
or below the recommended torque ranges of the wrench. Place end cap
back on.
End Cap
3/16 hex key
Applying Torque
1. Toward the end of the wrench is the “Load Point Line.” Grab handle at that “Load Point” end to apply torque. (If you the
grab handle closer toward head, then you will apply more torque than what the wrench is set for. The wrench is a length
dependent tool).
2. Tighten nut or bolt by applying a steady even pull. Wrench should be kept at 90 degrees to axis of bolt during tightening.
When pre-set torque is reached, the wrench will ‘break.’ Stop pulling once 45º break angle is achieved.
2. Reset the wrench for the next application.
3. With its unique design, it’s impossible to over tighten beyond the preset load.
Load Point Line
Corporate Headquarters: 1080 North 11th Street, San Jose, CA 95112 Phone: (408) 292-2214 Fax: (408) 292-2733
TB (Small Break-Over Wrench) Operating Instructions
Rev 2.2 (1/30/2017)
Ref. Item # 500294
Mountz Calibration & Repair Services
Mountz Inc. features an experienced calibration and repair staff. Our trained technicians can calibrate and repair most any
tool. Mountz provides rapid service with quality that you can trust as we offer three state-of-the-art calibration lab and repair
facilities that can calibrate up to 20,000 lbf.ft.
Since 1965, Mountz’s in-depth knowledge of torque is reflected in our tool’s craftsmanship and our ability to provide solutions
to both common and uncommon torque applications. We perform calibrations in accordance with ANSI/NCSL-Z540. Mountz
is dedicated solely to the manufacturing, marketing and servicing of high quality torque tools.
Tool Service & Repair Capability
- Torque Wrench Calibration: Click Wrench, Dial Torque Wrench, Beam Wrench, Cam-Over & Break-Over Wrench
- Torque Screwdrivers: Dial, Micrometer, Preset & Adjustable
- Torque Analyzers/Sensors: All brands
- Electric Screwdrivers: All brands
- Air Tools: All brands
Impact Wrenches, Drills, Pulse Tools, Grinders, Percussive Tools, Air Screwdrivers, Nutrunners, DC Controlled Nutrunners
- Torque Multipliers: All brands
Mountz Torque Testers and Calibration Equipment
Torque tools go out of calibration with use. Calibrating a torque tool is a finetuning process of bringing the tool back within its tolerance. Torque testers
can also be used for quick tools tests on the line or in the lab to determine
whether torque tools are holding a given setting.
A regular torque tool calibration and re-calibration guarantees the operator
repeatable accuracy and adherence to international standards. Torque testing also ensures torque equipment is operating to peak performance and
can highlight potential tooling problems before they arise perhaps due to tool
wear or broken components.
Controlling torque is essential for companies to ensure their product's quality,
safety and reliability isn't compromised. The failure of a three-cent fastener
that isn’t properly tightened can lead to catastrophic or latent failures.
Fasteners that are insufficiently torqued can vibrate loose and excessive
torque can strip threaded fasteners. Using a quality torque tool has become
increasingly important for many companies to ensure that proper torque is
being applied and maintains gauge requirements associated with the ISO
9001 Quality Standard. Look for the Mountz hexagon logo - it's a stamp for
quality tools, service and knowledge in the field of torque control.
Mountz Service Locations
Eastern Service Center
19051 Underwood Rd.
Foley, AL 36535
Phone: (251) 943-4125
Fax: (251) 943-4979
Western Service Center
1080 N.11th Street
San Jose, CA 95112
Phone: (408) 292-2214
Fax: (408) 292-2733
Twitter: @mountztorque
Download a “Service Form” and include a copy
when you send the tools in to be serviced.
Looking for fasteners?
Corporate Headquarters: 1080 North 11th Street, San Jose, CA 95112 Phone: (408) 292-2214 Fax: (408) 292-2733
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