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WorksheetsLV04 - Chassis revision
Total questions: 46
Worksheet time: 23mins
where is the brake light switch mounted?
remotely from the brake pedal
directly to the brake pedal
on the front panel
on the front panel
what does Hygroscopic mean?
Corrosive to metal
Absorbs water from the atmosphere
Absorbs air from the atmosphere
the leading shoe will....
wear faster than a trailing brake shoe lining
wear at the same rate as a trailing brake shoe lining
What is is bead diameter of the tyre shown?
the bead diameter is 205 mm
the bead diameter is 15 inches
the bead diameter is 65 mm
the bead diameter is 94H
what is shown in the image?
Brake shoe
Brake adjuster
Wheel cylinder
what holds the caliper piston in place?
fluid and dust seals
locating rings
pistons springs
What is shown in this image?
positive camber
negative camber
Toe-in
Toe-out
to ensure that a vehicles warranty is valid it is .....
important to fit replacement parts that meet the original manufacturer's specification
important to clean the vehicle after servicing
important that all cars must have an annual MOT
you find that a vehicles brake fluid is contaminated, what must you do to rectify this?
replace the brake fluid
fit all new brake hoses
fit new brake pads
fit new brake discs
what can be found in the workshop manual?
Vehicle specifications and settings
The description of work to be done
customers details
When braking you feel a pulsing of the brake pedal, what checks would you perform on the brake system?
Check thickness with a micrometer
Check the wear on the disc by feel
Measure the disc with a caliper and rule
Check disc run out with a Dial Test Indicator
what tool would be used to check the run out of a brake disc?
a micrometer
a feeler gauge
a dial gauge
Camber can be described as...
the backward tilt of the steering axis when viewed from the side of the vehicle
the outward tilt of the steering axis when viewed from the front of the vehicle
what is meant by the 65 in the following tyre size 185/65/R15 82 H
the ply rating
the aspect ratio
the load rating
How oscillations would you expect to see when performing a bounce test on a vehicles suspension?
three
Five
four
six
Ackerman steering results in:
the inner wheel turns through a greater angle than the outer
the outer wheel turns through a greater angle than the inner
both wheels turn the same amount
what is meant by the 82 in the following tyre size 185/65/R15 82 H
the speed rating
the load index
the nominal width
the aspect ratio
how does the ABS system prevent wheel lock?
Providing enough braking force to lock the rear wheels only
Providing only enough braking force to each wheel to avoid locking
Providing enough braking force to lock the front wheels only
How are the plys on a radial tyre set?
90deg to the bead
45deg to the bead
180deg to the bead
An advantage of disc brake over drum brakes is they:
dissipate heat better
cost less
last longer
what is the most common spring type used on the front axle of light vehicles?
torsion bar springs
coil springs
leaf springs
what should you do after fitting new brake pads to a customers vehicle?
pump the brake pedal to take up the free play
take the vehicle for a test drive
check the hand brake travel
The purpose of the ABS system is....
To brake quicker under all conditions
To prevent wheel lock when braking
In relation to suspension what is meant by the term roll?
leaning movement of the body when turning
lifting of the front during acceleration
what effect will the over heating of your brakes have?
brake fade
brake grab
to much toe out would cause a vehicle to what?
over steer
under steer
skid
The angular displacement of the steering axis from the vertical axis of a steered wheel in a car is described as....
the castor angle
the camber angle
the Ackermann angle
At high speed the steering system suffers from a vibration which is not wheel balancing. One possible cause is:
worn shock absorbers (dampers)
worn crown wheel
worn gear change mechanism
The measurement of the centerline of your wheel/tire relative to the road surface is described as...
camber angle
castor angle
unsprung weight can be reduced by fitting:
steel road wheels
alloy road wheels
larger diameter wheels
Which of the following is achieved when a vehicle maintains a steady path through a corner without slipping?
true rolling motion on corners
under steer of the front wheels during cornering
driver feed back on corners
over steer of the front wheels during cornering
the term 'negative offset steering angle' is when:
the centre line through the swivel pin intersects the centre line of the wheel below ground level
centre line through the swivel pin intersects the centre line of the wheel above ground level
there is a an off-set angle in the longitudinal plane of the steering which is added to reduce steering feed back
What will cause a spongy pedal?
there is air in the brake system
there is moisture in the brake system
the brake fluid is contaminated
What type of tyre wear will an over-inflated tyre cause?
wear on the centre part of the tread
wear on the outer part of the tread
wear on the inner part of the tread
incorrect wheel balance would cause...
the steering wheel to shake
the steering wheel to pull to the left
In relation to steering geometry , the purpose of the 'castor angle' is to;
compensate for oversteer
provide a degree of self-centring
Hygroscopic, means that brake fluid absorbs what?
air, causing it to reduce braking efficiency
moisture, which lowers the boiling point
moisture, which reduces its viscosity
Which fault will change camber angle?
that the load is evenly distributed
the track rod ends are correctly screwed in place
if the wheels are buckled
what term relates to the rotation of a vehicle?
pitch
roll
sway
Understeer is where the?
slip angles of the front tyres are larger than the slip angles of the rear tyres
slip angles of the rear tyres are larger than the slip angles of the front tyres
a possible cause of a vehicle pulling to one side is:
buckled wheels
incorrect wheel alignment
incorrect castor angle
incorrect wheel balance
incorrect wheel balancing would present with which of the following symptoms?
Steering wheel vibration that increases with vehicle speed
Severe feathering of both the front tyre treads
the shock absorbers' need replacing
tyre pressures are too high
Which type of suspension does not allow each wheel to move independently from the others?
non independent rear suspension
torsion bar suspension
isolastic suspension
adaptive suspension
one advantage of electronic power steering is that:
it is more compact
it is cleaner
less power is taken from the engine
What is active suspension?
hydraulic damping controlled by sensors, actuators and an ecu
manually adjustable friction dampers
a damper works by:
forcing oil through valves to restrict flow
forcing air through valves to slow its movement
