Flashcards in Engineer Resource Manual Deck (59)
Stopping distance increases by how much in rainy, wet conditions?
Maximum speed when driving with chains?
Compression ratio of a diesel engine
14:1 to 25:1
A force that tends to rotate or turn things
How to perform an oil check in the cab
Push the up and down arrow buttons at the same time
OL - LO2
Oil level low by 2 quarts
OL - HI2
Oil level high by 2 quarts
OL - 7 0
Temperature too low (below 160)
Jake brakes will handle how much of your braking needs?
Jake brake will help you stop how much faster?
30% less time and distance
What is the electrical system on most rigs?
Why plug the rig into shore power in the station?
The constant need for a fully charged battery
What does the alternator do?
Provides electricity to the 12-volt system, including the batteries, compartment lights, light bar, scene lights, floor lights, etc.
What does the voltmeter show?
The amount of voltage the system is producing with the engine off or running.
A fully charged battery with engine off and no loads running will read what on the voltmeter?
With engine running what should the voltmeter read?
What does the ammeter show?
How much electricity is going to and from the batteries, in amps.
What does the load manager do?
Prevents the batteries from being excessively discharged.
Electronic Control Unit, continuously monitors the vitals of the engine and transmission.
What type of pump mounting is used for modern day pumpers?
Midship transfer drive
What kind of pump is used to move water through the pump?
Describe "series" or "pressure" mode.
Water is sent from one impeller to the other, boosting the pressure.
Describe "parallel" or "volume" mode.
Water enters both impellers at the same time and double the volume is discharged without an additional boost in pressure.
A condition in which vapor cavities form then implode causing a shock wave. It happens when pockets of low pressure form at the vanes in the impeller of a centrifugal pump. It causes vibrations, loss of efficiency, and damage to the impeller. It can sound like gravel or marbles in the pump.
What is the usual cause of cavitation?
What is a priming device used for?
To replace air in the centrifugal pump with water.
What does a discharge relief valve do?
It handles sudden changes in pressure on the discharge side of the pump by re-routing the water back to the intake side.
What does an intake relief valve do?
It prevents dangerous pressures on hoses and pumps. When hose lines are shut down, intake relief valves automatically open to spill unused water on the ground preventing water hammer or dangerous pressure increases on pumps and hoses. Also called a dump valve.
What is an intake relief valve usually pre-set to?