GMC Chevrolet Camaro 1998 Service Manual page 31

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General Information
Tapered Beam Model Torque Wrench
65520
Of the many different types of torque wrenches
available, the most popular in the service field is the
tapered beam model. This model uses a pointer
attached to the head that runs the length of the flexible
beam (shaft) to a scale located near the handle. As
the wrench is pulled, the beam bends and the pointer
indicates the torque on the scale.
Click-type Torque Wrench
6484
Another type of torque wrench is the CLICK type
which is adjusted to a predetermined torque. Once the
designated torque has been reached, the wrench
has a reflex signalling feature that causes a
momentary breakaway of the body of the torque
wrench. This feature has the effect of sending a strong
impulse to the technician's hand. Although. once
quite popular, these wrenches are not the preferred
method for torque applications.
General Information 0-19
Pivoted Handle Torque Wrench
289952
Some types of torque wrenches are equipped with a
pivoted handle. If used properly, this handle permits the
accurate and correct use of the torque wrench. In order
to hold a pivoted type handle, it should be floated on the
pivot point. This concentrates your pulling force. If the
pivoting handle comes in contact with the yoke
extension during the process of pulling, there is a very
good chance the torque readings will be inaccurate
because this could alter the wrench loading point. The
design of the handle, however, makes it inconvenient to
deliberately use the floating principle improperly.
Direct Reading Torque Wrench
6486
Some of the newer model wrenches, such as the
Snap-on® Direct Reading Torqometer wrench (Model
TES or equivalent) can be held at any position on
the wrench without affecting accuracy. These
wrenches are preferred over the flexible beam types
because of their greater degree of accuracy, compact
design, and scales that are easily readable.