Page 67 - 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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52 Automobile mechanical and electrical systems

Figure 1.72 Combination spanners (wrenches)

General advice and instructions for the use of hand tools (taken from advice by
Snap-on):
Only use a tool for its intended purpose.
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Always use the correct size tool for the job you are doing.
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Pull a spanner or wrench rather than pushing whenever possible.
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Do not use a fi le, or similar, without a handle.
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Keep all tools clean and replace them in a suitable box or cabinet.
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Do not use a screwdriver as a pry bar.
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Look after your tools and they will look after you!
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1.5.2 Test equipment

Removing, refi tting and adjusting components to ensure the vehicle system
operates within specifi cation is a summary of almost all the work you will be
doing. The use, care, calibration and storage of test equipment are therefore very
important. In this sense, ‘test equipment’ means:

● measuring equipment, e.g. a micrometer
hand instruments, e.g. a spring balance
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electrical meters, e.g. a digital multimeter (DMM) ( Fig. 1.73 ) or an oscilloscope.
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The operation and care of this equipment will vary with different types. Therefore,
you should always read the manufacturer’s instructions carefully before use, or if
you have a problem. The following list sets out good general guidelines:
● Follow the manufacturer’s instructions – at all times.
Handle with care – do not drop keep the instrument in its box.
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Ensure regular calibration – check for accuracy.
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Understand how to interpret results – if in doubt, ask!
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My favourite piece of test equipment is the PicoScope ( Fig. 1.74 ). This is an
oscilloscope that works through a laptop or computer. It will test all engine
management systems and other electrical and electronic devices. Check out