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Piston Engines 2 > 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
Where else can you hear hissing from a leak?
Carburetor, Exhaust
26
If there is hissing from a carb, where is likely the leak?
Intake manifold/valve
27
If there is hissing from an exhaust, where is likely the leak?
Exhaust manifold/valve
28
What are Crankshaft Journals used for?
Used to keep it in place in the crankcase
29
Where should the cylinder be during a compression test?
TDC
30
What prevents Lateral movement of the crankshaft?
Thrust Washer
31
\*\*\*\*\*Impulse coupling delays spark to prevent \_\_\_\_\_\_\_\_\_
Kickback
32
During compression testing, why do we want the engine oil to be warm, and full?
Seals the compression further
33
\_\_\_\_\_\_\_\_\_\_ Engines don't need a separate oil drain line because the push rods provide the oil return
Continental
34
\_\_\_\_\_\_\_\_\_\_ is the act of etching in the cylinder wall to allow oil to adhere properly
Deglazing
35
The Cylinder barrel and the Cylinder head thread together via ______________ \_\_\_\_\_\_
Interference fit
36
**_What is one reason to carry out a major overhaul?_**
TBO is up
37
**_What position should the magneto be in when setting E-Gap?_**
Just after magnetic neutral position in the direction of rotation
38
**_If there is Green Paint below the sparkplug?_**
.010" Oversized inner surface
39
What does it indicate if there is **Orange** paint under the spark plug?
The inner surface is **Chrome plated** (Lycoming Engines)
40
What does **Blue paint** underneath the spark plug indicate?
Nitrided Barrel (Lycoming Engine)
41
What does **Yellow paint** under the spark plug mean?
.020" Oversize
42
What does **Orange and white** underneath the spark plug mean?
Cermichrome
43
What does **Yellow paint** on top of the spark plug reach mean?
Long Reach Plugs 13/16" Thread Depth
44
What does **no paint** on top of the spark plug reach mean?
Normal Reach, 1/2" Thread Depth
45
What does **"oversize"** stamped on the flange mean?
".015" Oversize (Continental Engines)
46
What does **orange** on the flange mean?
Chrome Inner Surface (Continental Engines)
47
Why are piston pin caps made of **soft aluminum**?
To prevent damage to the inner part of the cylinder
48
**_In the Otto Cycle, what comes after the exhaust stroke?_**
Intake (with valve overlap)
49
**_What device limits the fwd/aft movement of the crankshaft?_**
Thrust Washer
50
**_Which side of the cylinder has more cooling fins?_**
Exhaust side
51
**_Which piston ring is optional?_**
Oil Scraper Ring
52
**_If there is no adjustment on the rocker arm, what may that indicate?_**
They are Hydraulic lifters
53
**_When you install a magneto, what position should the engine be in?_**
Number 1 Cylinder ,compression stroke, before TDC
54
**_When replacing pitted spark plug points, where should you check?_**
Capacitor
55
\_\_\_\_\_\_ ___________ is when the poles allign with the pole shoes.
Full Register
56
\_\_\_\_\_\_\_\_\_\_ ____________ is used to increase hot spot under low RPM
Impulse Coupling
57
\_\_\_\_\_\_\_\_ ____ \_\_\_\_\_\_\_\_ provides hot, late spark without impulse coupling. uses **retard points** to ignite at TDC to prevent **kickback**
Shower of Sparks
58
When doing a differential pressure test, make sure engine is _______ and there is ____ still in the engine
Warm, oil
59
What is remanufactured overhaul?
Engine components returned to "original specs"
60
\_\_\_\_\_\_\_\_\_\_\_\_\_ holds all the engine parts in alignment and supports the cylinder and crankshaft, constructed of aluminum alloy
Crankcase
61
_Why might you do a bulk inspection?_
Abnormality eg// prop strike, submerged engine
62
_What does the impulse coupler do?_
Delays the opening of the primary breaker points
63
What is **Standard Overhaul?**
Restoring to **service limits**
64
What are the breaker points connected to?
Primary coil
65
\_\_\_\_\_\_\_\_\_ Cylinder Walls are hardened to reduce wear but still rust as easily as plain steel walls (Exposes cylinder wall to ammonia at high temperatures
Nitrided
66
\_\_\_\_\_\_\_\_\_ Cylinder walls - chromium plating used to resist wear and provide corrrosion resistant surface
Chrome
67
When the magnetos are past the starting point, it is called the _________ \_\_\_\_ \_\_\_\_\_\_\_\_
Coming in Speed
68
\_\_\_\_ ________ \_\_\_\_\_\_\_ are designed to maintain the **thickness** of the oil film on the cylinder wall
Oil Control Rings
69
How are the barrel and cylinder head attached?
Interference fit
70
How do you adjust length with Hydraulic Lifters?
Adjust length of push rod
71

Piston Engines 2 (6 decks)

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