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Piston Enginess > Test 1 Flashcards > Flashcards

Test 1 Flashcards

1
Q

The complete disassembly, cleaning, inspection, repair, reassembly, & testing of an engine and its primary components

A

Engine Overhaul

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2
Q

2 Types of overhaul are:

A

Remanufactured Overhaul & Standard Overhaul

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3
Q

When would you usually refer to SB’s in reference to an overhaul?

A

Before overhaul/bulk inspection

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4
Q

What is the purpose of Internal Magneto Timing?

A

To set Efficiency Gap (E-Gap) position for most intense or Highest Energy Spark from the magneto

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5
Q

From the Pilot’s perspective, what direction is the propeller turning?

A

Clockwise

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6
Q

On a Differential Compression Test, where should the piston be?

A

TDC

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7
Q

On a Soap test, where should the Piston be?

A

BDC

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8
Q

On a Differential Compression Test, the engine should be ______ and ____ should still be in the engine

A

Warm, Oil

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9
Q

On a Differential Compression test, what precautions should be taken to prevent accidental firing of the engine?

A

Spark plug leads off and Magnetos grounded

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10
Q

The exhaust valve, in size, is the _________ valve, and is located on the side of the cylinder with ______ cooling fins

A

smaller, more

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11
Q

Ways to find the difference between Continental and Lycoming

A

Firing Order Colour Cylinder Numbering Data Plate Rocker Cover has Company Logo Push Rod Positioning

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12
Q

On Lycoming Engines, Push Rods Lie on ____

A

Top

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13
Q

How to time a magneto?

A

Adjust primary points to Open/Break primary circuit at point of highest intensity

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14
Q

What speed does the camshaft turn in relation to the crankshaft?

A

Half the speed

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15
Q

What speed does the Crankshaft turn in relation to the camshaft?

A

twice the speed

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16
Q

If you hear hissing during a compression test coming from the crankcase, where is the leak likely to be?

A

Piston Rings

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17
Q

What is a Crankshaft Throw composed of?

A

Two Cheeks and a Crank Pin

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18
Q

What kind of Piston is for Higher Compression ratio cylinders?

A

Dome Head

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19
Q

_________ Cylinder walls is an option to harden and reduce wear, using Ammonia at High Temperatures. This does not protect the cylinder wall from corrosion.

A

Nitrided

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20
Q

_________ _________ is a design used by manufacturers to account for the different operating temperatures at the top vs the bottom of the cylinder head in order to keep the cylinder perfectly round.

A

Cylinder Taper/Cylinder Wall Choke

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21
Q

__________ Cylinder Walls are used to provide resistance to corrosion

A

Chrome

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22
Q

After the engine speeds up on a start, the magneto is said to be at __________ ___ _________

A

Coming in Speed

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23
Q

What do the points of the magneto attach to?

A

The primary winding

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24
Q

What position should the engine be in when timing mag to engine?

A

Cyl 1- Before TDC, Compression Stroke

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25
Q

Where else can you hear hissing from a leak?

A

Carburetor, Exhaust

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26
Q

If there is hissing from a carb, where is likely the leak?

A

Intake manifold/valve

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27
Q

If there is hissing from an exhaust, where is likely the leak?

A

Exhaust manifold/valve

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28
Q

What are Crankshaft Journals used for?

A

Used to keep it in place in the crankcase

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29
Q

Where should the cylinder be during a compression test?

A

TDC

30
Q

What prevents Lateral movement of the crankshaft?

A

Thrust Washer

31
Q

*****Impulse coupling delays spark to prevent _________

A

Kickback

32
Q

During compression testing, why do we want the engine oil to be warm, and full?

A

Seals the compression further

33
Q

__________ Engines don’t need a separate oil drain line because the push rods provide the oil return

A

Continental

34
Q

__________ is the act of etching in the cylinder wall to allow oil to adhere properly

A

Deglazing

35
Q

The Cylinder barrel and the Cylinder head thread together via ______________ ______

A

Interference fit

36
Q

What is one reason to carry out a major overhaul?

A

TBO is up

37
Q

What position should the magneto be in when setting E-Gap?

A

Just after magnetic neutral position in the direction of rotation

38
Q

If there is Green Paint below the sparkplug?

A

.010” Oversized inner surface

39
Q

What does it indicate if there is Orange paint under the spark plug?

A

The inner surface is Chrome plated (Lycoming Engines)

40
Q

What does Blue paint underneath the spark plug indicate?

A

Nitrided Barrel (Lycoming Engine)

41
Q

What does Yellow paint under the spark plug mean?

A

.020” Oversize

42
Q

What does Orange and white underneath the spark plug mean?

A

Cermichrome

43
Q

What does Yellow paint on top of the spark plug reach mean?

A

Long Reach Plugs 13/16” Thread Depth

44
Q

What does no paint on top of the spark plug reach mean?

A

Normal Reach, 1/2” Thread Depth

45
Q

What does “oversize” stamped on the flange mean?

A

“.015” Oversize (Continental Engines)

46
Q

What does orange on the flange mean?

A

Chrome Inner Surface (Continental Engines)

47
Q

Why are piston pin caps made of soft aluminum?

A

To prevent damage to the inner part of the cylinder

48
Q

In the Otto Cycle, what comes after the exhaust stroke?

A

Intake (with valve overlap)

49
Q

What device limits the fwd/aft movement of the crankshaft?

A

Thrust Washer

50
Q

Which side of the cylinder has more cooling fins?

A

Exhaust side

51
Q

Which piston ring is optional?

A

Oil Scraper Ring

52
Q

If there is no adjustment on the rocker arm, what may that indicate?

A

They are Hydraulic lifters

53
Q

When you install a magneto, what position should the engine be in?

A

Number 1 Cylinder ,compression stroke, before TDC

54
Q

When replacing pitted spark plug points, where should you check?

A

Capacitor

55
Q

______ ___________ is when the poles allign with the pole shoes.

A

Full Register

56
Q

__________ ____________ is used to increase hot spot under low RPM

A

Impulse Coupling

57
Q

________ ____ ________ provides hot, late spark without impulse coupling. uses retard points to ignite at TDC to prevent kickback

A

Shower of Sparks

58
Q

When doing a differential pressure test, make sure engine is _______ and there is ____ still in the engine

A

Warm, oil

59
Q

What is remanufactured overhaul?

A

Engine components returned to “original specs”

60
Q

_____________ holds all the engine parts in alignment and supports the cylinder and crankshaft, constructed of aluminum alloy

A

Crankcase

61
Q

Why might you do a bulk inspection?

A

Abnormality eg// prop strike, submerged engine

62
Q

What does the impulse coupler do?

A

Delays the opening of the primary breaker points

63
Q

What is Standard Overhaul?

A

Restoring to service limits

64
Q

What are the breaker points connected to?

A

Primary coil

65
Q

_________ Cylinder Walls are hardened to reduce wear but still rust as easily as plain steel walls (Exposes cylinder wall to ammonia at high temperatures

A

Nitrided

66
Q

_________ Cylinder walls - chromium plating used to resist wear and provide corrrosion resistant surface

A

Chrome

67
Q

When the magnetos are past the starting point, it is called the _________ ____ ________

A

Coming in Speed

68
Q

____ ________ _______ are designed to maintain the thickness of the oil film on the cylinder wall

A

Oil Control Rings

69
Q

How are the barrel and cylinder head attached?

A

Interference fit

70
Q

How do you adjust length with Hydraulic Lifters?

A

Adjust length of push rod

71
Q
A

Piston Enginess (12 decks)

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