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Question 1

Purpose of engine lubrication systems

Answer 1

provide adequate supply of clean oil to bearings and gears at right temperature and pressure

Question 2

Types of engine lubricating systems

Answer 2

Wet Sump and Dry Sump

Question 3

Wet Sump

Answer 3

stores oils in gearbox. Used on centrifugal flow engines

Question 4

Dry Sump

Answer 4

Stores oil in tank external of engine. Larger supply of oil.Primarily for axial flow

Question 5

Reservoir Tank

Answer 5

Stores systems oil supply

Question 6

Vent controls

Answer 6

air pressure in tank to ensure a constant supply of oil to main oil pump

Question 7

Deaerator

Answer 7

Seperates air from oil returning to oil tank

Question 8

Oil Level Transmitter, Dipstick, or

Answer 8

Sight Gauge

Question 9

Has a Coarse

Answer 9

Mesh screens

Question 10

has various

Answer 10

oil and air inlets and outlets

Question 11

Pressure relief valve

Answer 11

limits maximum system pressyre where valves open and returns excess oil to inlet side of pump

Question 12

Check Valve

Answer 12

allows flow in one direction only

Question 13

Bypass valve

Answer 13

allows fluid to flow in alternate direction if clogged

Question 14

Lubrication System Pump Purpose

Answer 14

Create flow to a volume of fluid

Question 15

System lubrication pumps

Answer 15

Pressure and Scavenger

Question 16

Pressure pump

Answer 16

delivers flow of oil to points of lubrications under constant volume

Question 17

Scavenger Pump

Answer 17

Returns oil from engine bearing and gear cavities back to tank

Question 18

Types of normal pumps

Answer 18

Gear Type and Gerotor Pump

Question 19

Gear pump

Answer 19

dual or multi element with pressure relief valve

Question 20

Gerotor Pump

Answer 20

Single, Dual, or multi element with pressure relief valve

Question 21

Lubrication System Filters Purpose

Answer 21

Removes contamination from lubricants

Question 22

System Filter Types

Answer 22

Cartridge Filter
Screen
Screen Disk

Question 23

Cartridge Filter is

Answer 23

periodically removed and replaced

Question 24

Screen filter can be

Answer 24

cleaned and reused

Question 25

Screen Disk Filter can be

Answer 25

Cleaned and reused

Question 26

Lubricating system heat exchangers purpose

Answer 26

reduce temperature of oil by transmitting heat from oil to another fluid

Question 27

Types of heat exchangers

Answer 27

Air/Oil | Fuel/Oil

Question 28

Lubrication Jets(nozzles) purpose

Answer 28

direct oil onto bearings and/or gears. | Mist or soild spray

Question 29

oil pressure transmitter purpose

Answer 29

senses oil pressure in lubrication system. | sends signal to cockpit. PSI

Question 30

Oils(Liquids)

Answer 30

Used as lubricant and must be free flowing

Question 31

What prevents oil from flowing

Answer 31

Viscosity

Question 32

Petroleum based lubricating oil

Answer 32

used on reciprocating piston engines. graded to identify series and viscosity of oil

Question 33

Synthetic based lubricating oil

Answer 33

capable of withstanding higher operating temperatures and high bearing speeds

Question 34

petroleum and synthetic oil cannot be

Answer 34

mixed

Question 35

Oil used in most gas turbine engines is

Answer 35

MIL-L-23699. NATO symbol is O-156

Question 36

Geases(SemiSolid)

Answer 36

Stable and free from bleeding, non corrosive, and waether and water resistant

Question 37

General Purpose Greases is used for

Answer 37

wheel bearings, and where compatibility with rubber is required

Question 38

Extreme High Temp Grease is used for

Answer 38

High speed applications such as ball or roller bearings

Question 39

Molybdenum Disulfide (Moly-B) grease is used on

Answer 39

sliding steel surfaces

Question 40

the PON-6 pre oiler provides

Answer 40

pressurized, filtered oil for servicing.

Question 41

the PON-6 preoiler is a

Answer 41

self-contained, hand-operated 12 quart system.

Question 42

the PON-6 pre oiler provides

Answer 42

pressurized, filtered oil for servicing.

Question 43

the PON-6 preoiler is a

Answer 43

self-contained, hand-operated 12 quart system.

Question 44

When handling any chemicals or hazardous liquids

Answer 44

follow the correct procedures and use appropiate PPE

Question 45

Ensure chemicals and hazardous liquids are placed

Answer 45

in authorized disposal containers

Question 46

Two factors dictate procedures for disposal. These are:

Answer 46

Type and Location

Question 47

Main engine bearing purpose

Answer 47

support compressor and turbine rotors and allow them to rotate freely. 3 - 7 main bearings are required

Question 48

What determines amount of bearings required?

Answer 48

Length and Weight of engine and number of rotors

Question 49

Accessory Bearing purpose

Answer 49

absorb loads created by drive shafts and gears

Question 50

Accessory bearing located in

Answer 50

accessories and gearboxes

Question 51

Ball Bearings are used on

Answer 51

compressor and turbine rotor shafts.

Question 52

Ball bearings absorb both

Answer 52

radial and axial loads

Question 53

Roller Bearings are used in areas of

Answer 53

high centrifugal force and absorb radial loads only

Question 54

Bearings are made up of:

Answer 54

Inner and outer race cage Bearing(roller or ball)

Question 55

Oil seals purpose

Answer 55

Prevent oil from escaping its normal path of flow

Question 56

Labyrinth Seal

Answer 56

Non-rubbing surface designed to allow minimal leakage

Question 57

Labyrinth seal leakage is controlled by

Answer 57

engine bleed air (air pressure) on one side

Question 58

Thread seal

Answer 58

oil seal that uses reverse threading and centrifugal forced

Question 59

Carbon seal

Answer 59

spring loaded carbon seal mated with machined surface(rotating seal), which creates the seal.