unit 2 Flashcards
When classified as to structure, which of the following is not a type of an oil pump?
- Gear
- Gerotor
- Rotogear
- Sliding vane
Rotogear
Which type of oil pump consists of a gear and rotor within a housing?
Gerotor
One micron is a metric linear measurement that is equal to
1/25,000 inch
Chip detectors have an electrical connection for making which type of check?
Continuity
Which type of valve permits oil flow in only one direction?
Check
Which type of oil cooler operates on the same principle as a radiator in an automobile?
Air/Oil
The purpose of an oil-temperature control valve used with air/oil coolers is to
direct oil around and through the cooler
What type of oil seal has soft metal as its basic composition and allows a small amount of airflow to prevent oil seepage?
Labyrinth
Use extreme care when working with labyrinth seals because of their
soft metal construction; these seals can be damaged easily.
When an engine is not operating, static preload for a carbon oil seal is provided by
spring pressure
Carbon seals should be cleaned by soaking them in clean, warm
engine lubricating oil for 30 minutes
The F100-PW-100 engine oil pressure varies with N2, engine inlet oil temperature, and
oil nozzle condition
What term is used to indicate that air is being mixed with the oil in the oil pump to create pockets of air?
Aeration
The number 1, 4, and 5 bearing compartments are capped on the F100-PW-100 engine oil system. which oil subsystem (or subsystems) do these compartments breathe through?
Scavenge only
Which type of oil system stores the oil in a tank fitted to the side of the engine?
Dry sump
Which type of oil system design places the oil cooler in the pressure subsystem?
Hot tank
Which type of oil tank design do most fighter aircraft engines incorporate to help with weigh savings?
Hot tank
On an F100 engine, the breather pressurizing valve is internally mounted in the…
Gearbox
If the red button on an F100-PW-220 engine oil filter pops out and remains extended, the…
design pressure differential has been exceeded
On a F100-PW-220 engine, the air/oil coolers are mounted on the fan duct and use…
secondary fan airflow as coolant
On an F100-PW-220 engine, what component permits oil to bypass the oil filter during cold weather starts?
Filter assembly bypass valve
On an F100-PW-220 engine which bearing compartments drain into the gearbox by the tower shaft cavity?
2 and 3
How does the AFTLA obtain oil samples for analysis?
Automatically from the manufacturer
The hazardous property of modern jet engine oil the journeyman must be aware of is
corrosiveness
Which action concerning open oil containers is correct?
- Dispose of any portion not immediately used
- Store remaining portion immediately after use
- Dispose of any portion not used within 60 days
- Store remaining portion in clearly marked containers
Dispose of any portion not immediately used
Through the use of spectrometric oil analysis, aircraft will have a higher in-commission rate because there will be…..
less unnecessary maintenance
For bases that do not have an OAP laboratory, who designates the facility to which oil samples are sent?
Program manager
Who is responsible for ensuring the OAP operates properly
Project monitor
What are microscopic metallic particles in the oil system called?
Wear metals
Increased friction between moving parts in the oil system….
accelerates the rate of wear, increasing the production of wear metal particles
During an OAP sample collection, using your mouth to draw oil up into the plastic tube could result in….
paralysis or death
Before taking an oil sample from a drain, drain enough fluid into a container in order to…
drain off water and sludge
oil sampling intervals should not vary by more than….
10%
The SEM/EDX analysis process differs from conventional oil analysis in that the SEM/EDX….
particles must be oil free fro analysis to take place.
