Warning-Ratchet Head; General Notes; Maintenance & Service; Certification - Proto MKT-2493 Guia Del Usuario

IMPORTANT:
Do not continue pulling on the wrench after pre-set torque has been reached and
the wrench has released. Pressure must be taken off the handle. The wrench will reset itself
automatically. Continuing to apply pressure after the wrench has released may result in damage
to the part being torqued by applying more than the specified amount of torque.

WARNING-RATCHET HEAD

WARNING-RATCHET HEAD -
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Dirty ratchet mechanism can slip or break.
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Mismatched or partially worn parts can cause ratchet to slip or break.
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Do not immerse ratchet in fluids.
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Do not replace worn parts individually, use entire contents of the service kit.
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Ratchets that slip or break can cause injury.
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Visually check condition of parts and tightness of cover plate before use.
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Lubricate periodically with SAE 30 oil or equivalent. Do not use grease.

GENERAL NOTES

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Obtain torque values from equipment manufacturer.
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Unless otherwise specified, threads and washer surfaces should be clean and lubricated.
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Store torque wrench in protective case at its lowest scale setting. Do not force handle beyond
lowest setting.
MAINTENANCE & SERVICE
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The torque wrench's internal torque mechanism is permanently lubricated during assembly. Do
not attempt to lubricate the internal torque mechanism.
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Clean torque wrench by wiping. Do not immerse in fluids.

CERTIFICATION

This torque wrench, as calibrated at the factory, is certified to meet the accuracy specified in
Federal specification ASME B107.300, and was calibrated on a torque standard traceable to the
National Institute of Standards Technology (N.I.S.T.)

HOW IS TORQUE MEASURED?

Torque is based on the fundamental law of the lever, which is "force times distance equals the
torque or twist around a point".
Torque is most commonly measured in foot-pounds (ft-lb) or inch-pounds (in-lb).
EXAMPLE:
If a 1 lb. force is applied 1 foot from the center of the bolt, the resulting torque
applied would be referred to as one foot pound (ft-lb) of torque.
Ratchets that slip or break may cause injury
EN
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