Page 89 - 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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74 Automobile mechanical and electrical systems

Table 1.29 Safety inspection examples
Brakes The footbrake must produce 50% of the vehicle weight
braking force and the parking brake 16% (this assumes
a modern dual-line braking system). The brakes must
work evenly and show no signs of leaks
Exhaust Should not leak, which could allow fumes into the
vehicle, and should not be noisy
Horn Should be noisy! (up to a legal maximum level)
Lights All lights should work and the headlights must be
correctly adjusted
Number plates Only the correct style and size must be fi tted. The
numbers and letters should also be correctly spaced
and not altered (DAN 15H is right, DANISH is wrong)
Seat belts All belts must be in good condition and work correctly
Speedometer Should be accurate and illuminate when dark
Steering All components must be secure and serviceable

Tyres Correct tread depth is just one example
Windscreens and You should be able to see right through this one! No
other glass cracks allowed in the screen within the driver’s vision

appropriate for certain types of vehicle. The table also lists the work in a
recommended order, including the use of a lift.

1.7.4 Road test

Assuming you are a qualifi ed driver, or you are able to tell a driver what you

want, then a road test is an excellent way of checking the operation of a vehicle.
A checklist is again a useful reminder of what should be done. A typical road test
following a service or inspection would be much as follows (but remember to
check specifi c manufacturers’ requirements):

Fit trade plates to vehicle if necessary.
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Check operation of starter and inhibitor switch (automatic).
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Check operation of lights, horn(s), indicators, wipers and washers.
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Check indicators self-cancel.
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Check operation of all warning indicators.
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Check footbrake and handbrake.
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Check engine noise levels, performance and throttle operation.
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Check clutch for free play, slipping and judder.
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Check gear selection and noise levels in all gears.
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Check steering for noise, effort required, free play, wander and self-centring.
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Check suspension for noise, irregularity in ride and wheel imbalance.
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Check footbrake pedal effort, travel, braking effi ciency, pulling and binding.
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Check speedometer for steady operation, noise and operation of mileage
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recorder.
Check operation of all instruments.
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Check for abnormal body noises.
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