Page 68 - 05. Subyek Teknik Mesin - Automobile Mechanical and Electrical Systems Automotive Technology Vehicle Maintenance and Repair (Vehicle Maintenance Repr Nv2) by Tom Denton

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Table 1.24 Hand tools

Hand tool Example uses and/or notes
Adjustable spanner An ideal standby tool and useful for holding one end of a nut
(wrench) and bolt

Open-ended Use for nuts and bolts where access is limited or a ring
spanner spanner cannot be used
Ring spanner The best tool for holding hexagon bolts or nuts. If fi tted
correctly it will not slip and damage both you and the bolt
head
Torque wrench Essential for correct tightening of fi xings. The wrench can
be set in most cases to ‘click’ when the required torque
has been reached. Many fi tters think it is clever not to use a
torque wrench. Good technicians realize the benefi ts
Socket wrench Often contains a ratchet to make operation far easier
Hexagon socket Sockets are ideal for many jobs where a spanner cannot be
spanner used. In many cases a socket is quicker and easier than a
spanner. Extensions and swivel joints are also available to
help reach that awkward bolt
Air wrench Often referred to a a wheel gun. Air-driven tools are
great for speeding up your work but it is easy to damage
components because an air wrench is very powerful. Only
special, extra strong, high-quality sockets should be used
Blade (engineer’s) Simple common screw heads. Use the correct size!
screwdriver
Pozidriv, Phillips Better grip is possible, particularly with the Pozidriv, but learn
and cross-head not to confuse these three very similar types. The wrong
screwdrivers type will slip and damage will occur
Torx ® Similar to a hexagon tool like an Allen key but with further

fl utes cut in the side. It can transmit good torque
Special-purpose Many different types are available. As an example, mole
wrenches grips are very useful tools as they hold like pliers but can
lock in position
Pliers Used for gripping and pulling or bending. They are available
in a wide variety of sizes, from snipe nose for electrical work,
to engineers’ pliers for larger jobs such as fi tting split pins
Lever Used to apply a very large force to a small area. If you
remember this you will realize how if incorrectly applied, it is
easy to damage a component
Hammer Anybody can hit something with a hammer, but exactly how
hard and where is a great skill to learn!

www.picoauto.com for more information. Figure 1.75 shows a signal from an
inductive sensor taken using the PicoScope. Key fact
An oscilloscope draws a graph of
1.5.3 Workshop equipment voltage against time.

In addition to hand tools and test equipment, most workshops will also have a
range of equipment for lifting and supporting as well as electrical or air-operated