A56 CPCS Articulated Dump Truck Theory
Exam Actual Questions and Correct
Answers
Give TWO examples of where the Work at Height regulations may apply to
dump trucks.
1. Access / egress to the cab
2. Access / egress to the engine compartment
3. Access to the body
4. Body maintenance
On articulated dump trucks, steering is achieved by actuating a hydraulic ram (or
rams) which is controlled by turning the steering wheel.
a) How does the engine supply the oil flow and
b) what happens to the steering when the engine stops?
a) The oil is supplied by the oil pump driven by the engine
b) When the engine stops there is no steering
Where should the dump truck's Operator's Manual be kept and why?
The Operator's Manual should be kept inside the machine in a place where the
operator has easy access.
,a) Give ONE advantage and
b) TWO disadvantages of rear-mounted cameras.
a) Allows the operator to see directly behind the machine
b) 1. The camera has a limited view
2. The view can be blinded by the sunlight
What does the Health and Safety at Work Act require employers to do with
regards specifically to plant?
The employer must ensure the plant is safe and maintained.
Using the Operator's Manual, state the cold-starting procedure for the machine.
ensuring the machine is in a safe, parked position. Use the 1/3 method for
warming by running at low RPMs initially, activating glow plugs if applicable, and
allowing fluids to warm for at least five minutes. Use the 1/3 method for
warming to prevent hydraulic damage
a) State the purpose of a retarder and
b) the possible consequences of not using it when required.
a) The retarder is a device that provides a partial braking effect on steep slopes
b) If it is not used then normal brakes have to be used which can cause a loss of
grip on steep slopes leading to loss of control
, If a load has to be tipped on a slope, what may happen if the load is tipped
downhill and why?
Weight transfer can cause the machine to tip rearwards due to the movement of
the center of gravity
The operator has to use a new type of dump truck that they are unfamiliar with.
What do Regulations (i.e. PUWER 98) and other guidance require the operator
to have?
The operator is required to have the correct instruction, training and up-to-date
information on that particular machine
What is the meaning of this hand signal (being demonstrated by the Tester)?
Arm extended straight out, palm forward: Intention to turn right (or move
out/overtake).
Arm extended straight out, then rotated anti-clockwise: Intention to
turn left.
Arm extended out, moving up and down: Intention to slow down or stop.
Using the Operator's Manual, state the figure for tyres' operating pressure.
The correct tyre operating pressure is found directly within the specific machine's
Operator's Manual, which must be consulted to ensure compliance with
Exam Actual Questions and Correct
Answers
Give TWO examples of where the Work at Height regulations may apply to
dump trucks.
1. Access / egress to the cab
2. Access / egress to the engine compartment
3. Access to the body
4. Body maintenance
On articulated dump trucks, steering is achieved by actuating a hydraulic ram (or
rams) which is controlled by turning the steering wheel.
a) How does the engine supply the oil flow and
b) what happens to the steering when the engine stops?
a) The oil is supplied by the oil pump driven by the engine
b) When the engine stops there is no steering
Where should the dump truck's Operator's Manual be kept and why?
The Operator's Manual should be kept inside the machine in a place where the
operator has easy access.
,a) Give ONE advantage and
b) TWO disadvantages of rear-mounted cameras.
a) Allows the operator to see directly behind the machine
b) 1. The camera has a limited view
2. The view can be blinded by the sunlight
What does the Health and Safety at Work Act require employers to do with
regards specifically to plant?
The employer must ensure the plant is safe and maintained.
Using the Operator's Manual, state the cold-starting procedure for the machine.
ensuring the machine is in a safe, parked position. Use the 1/3 method for
warming by running at low RPMs initially, activating glow plugs if applicable, and
allowing fluids to warm for at least five minutes. Use the 1/3 method for
warming to prevent hydraulic damage
a) State the purpose of a retarder and
b) the possible consequences of not using it when required.
a) The retarder is a device that provides a partial braking effect on steep slopes
b) If it is not used then normal brakes have to be used which can cause a loss of
grip on steep slopes leading to loss of control
, If a load has to be tipped on a slope, what may happen if the load is tipped
downhill and why?
Weight transfer can cause the machine to tip rearwards due to the movement of
the center of gravity
The operator has to use a new type of dump truck that they are unfamiliar with.
What do Regulations (i.e. PUWER 98) and other guidance require the operator
to have?
The operator is required to have the correct instruction, training and up-to-date
information on that particular machine
What is the meaning of this hand signal (being demonstrated by the Tester)?
Arm extended straight out, palm forward: Intention to turn right (or move
out/overtake).
Arm extended straight out, then rotated anti-clockwise: Intention to
turn left.
Arm extended out, moving up and down: Intention to slow down or stop.
Using the Operator's Manual, state the figure for tyres' operating pressure.
The correct tyre operating pressure is found directly within the specific machine's
Operator's Manual, which must be consulted to ensure compliance with
