Mountz FG Operating Instructions Manual

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FG PRESET TORQUE SCREWDRIVER
OPERATING INSTRUCTIONS

Rev 1.1 (9/6/2019)

The FG has external no adjustment sca le and must be preset using a torque analyzer or torque sensor. If the tool has not
been preset to a set torque value, then follow the directions for adjusting the torque setting before using the screwdriver.

Adjusting the Torque Setting for a Preset Value

1. Use a 5mm hexagonal key and remove end cap with from screwdriver anti-clockwise
direction. Also, remove the T -bar where fitted (for FG-40i and FG-125i models only)

2. Use a 2.0mm hexagonal key to loosen the adjuster locking screw by 1/4 - 1/3 turn until
slightly disengaged. A full turn is too much and will hinder the available hex depth. Insert
the 5mm hexagonal key into the adjuster and turn Clockwise. Turn hex key clockwise to
increase torque and counter clockwise to decrease torque. Tighten the locking screw to
10 lbf.in using the 2.0mm hexagonal key once required torque value is reached. Caution,
overtightening the locking scr ew may damage it or result in incidental turning of the
adjustment screw.

3. Take 10 consistent readings on the Torque Analyzer to confirm the torque setting. Do not
adjust torque above or below the recommended torque ranges for the tor que screwdriver
or torque analyzer. Tighten end-ca p back on using a 5mm hexagonal key.

Note: Do not adjust the torque setting while the screwdriver is connecte d to a torque

analyzer or torque sensor as you can overtorque and damage the sensor. The FG-8i
model does not have a set screw within t he adjustment screw.

Applying Torque

1. Tighten fastener or bolt by applying steady twists. Screwdriver should be kept at 90
degrees to axis of bolt during tightening. When pre-set torque is reached, the screwdriver
will ‘slip.’

2. The screwdriver will automatically reset itself for the next applicat ion.

3. With its unique cam-over design, it’s impossible to over tighten beyond the preset load.

Calibrating Torque Screwdrivers

To calibrate torque screwdriver s ei ther use a torque analyzer or torque senso r within the range
of the torque screwdriver. For torque screwdrivers calibrate torque in “Peak” mode with a
torque tester or torque sensor. Make sure to apply the torque slowly and smoothly.

1. Select a torque tester or torque sensor t hat covers the torque range of the scr ewdriver.
Connect screwdriver to the torque tester or torque sensor using the appropriate adapters
as needed.

2. Apply torque clockwise slowly until screwdriver ‘slips’ and note reading.

3. Adjust screwdriver to required torque setting as described above .

4. Test and repeat adjustment as necessary to obtain desired torque value.

SILICON VALLEY HEADQUARTERS

1080 North 11th Street, San Jose, CA 95112 | Phone: [phone] | Fax: [phone] | mountztorque.com

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5. Recalibrate torque screwdrive r at prescribed intervals.

Maintenance Schedule

Like an automobile, torque screwdrivers contain moving parts that require periodic servicing and lubrica tion.

Expected Tool Life

With normal use – 1,000,000 operations

Period Between Resetting of Torque

20,000 fastening operations. It i s acknowledged that some tools may achieve 20,000 operations in a relatively short period of
time. Under these circumstances the user may decide, with the benefit of their experience, to increase the per iod between
calibration intervals.

Routine Maintenance

After 100,000 operations, stri p, clean and re-grease the spring, bearings and internal components. Any worn components
should be replaced.

Note: Any tool that is dismantled during its life must be re-lubricated in accordance with the Mountz recommendat i ons. Do not
clean tools by immersing them in solvent, as this will destroy the intern al lubrication and cause failure of the tool.

Warranty

We’ve tested the FG preset torque screwdrivers over two million cycles in our controlled lab environment and we still can’t
break them!

It’s wh y we have an industry-leading warranty.

• Mountz FG tools are the only cam-over drivers on the market to offer a two-year unlimited warranty. If it breaks in any

way, we’ll fix it or replace it for free.

• Lifetime guarantee against manufacturing defects. We only make the highest quality products. This driver will not have a

defect, we stake our quality reputation on it.

• Warranty includes a free first calibration within the first year (if needed).

Testing and Servicing

Torque tools go out of calibration with use. Calibrating a torque tool is a f i ne-tuning process of bringing the tool b ack within its
tolerance. Regular torque calibration of a hand screwdriver ensur es accuracy, repeatable tool performance, and adherence to
international standards.

We recommend a general once a year calibration interval. However, it is the user’s organization that must determ ine suitable
intervals based upon equipment performance, application, degree of usa ge and management objectives.

Mountz Calibration and Repair Services

Mountz Inc. features an experienced ca libration 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 two state-of-the-art calibration lab and repair f acilities that can
calibrate up to 20,000 lbf.ft.

About Mountz

Mountz, The Torque Tool Specialists®, has been a leader in the torque tool indust ry for
more than 50 years. Engineered in the S ilicon Valley and serving the gl obe, Mountz
focuses on delivering high-quali ty torque products, services, and solutions to ensure
customers can always proceed with co nfidence. We are committed to forging a safer world
through precision and accuracy, and by innovating every day.

Mountz Service Locations

Eastern Service Center

19051 Underwood Rd.
Foley, AL 36535
Phone: [phone]
Fax: [phone]

Western Service Center

1080 N.11th Street
San Jose, CA 95112
Phone: [phone]
Fax: [phone]

www.mountztorque.com

SILICON VALLEY HEADQUARTERS

1080 North 11th Street, San Jose, CA 95112 | Phone: [phone] | Fax: [phone] | mountztorque.com