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SWE/Useful tid Bits > MK A School > Flashcards

MK A School Flashcards

1
Q

*F / * C conversions

A
  • F= (1.8 x *C) + 32

* C = 0.55 x (*F - 32)

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2
Q

Laws of heat flow

A
  • flows from warmer to cooler substance
  • must be a temperature difference for heat to flow, heat will continue to flow til temperatures equalize
  • greater the temperature difference the faster the heat will flow
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3
Q

represents what when referring to crankshaft

A

Actual degree location relative to 0 degrees or TDC (top dead center)

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4
Q

What is air called that’s forced into a cylinder? And what are the ports through which it enters called?

A

Scavenge Air.

Scavenge ports

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5
Q

In many applications what does a turbo or blower assist in?

A

Intake process by providing positive pressure to the cylinder

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6
Q

What may be necessary when the are dirty vs when they are clean for torque wrench reading?

A

A higher torque wrench reading in order to reach required tension

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7
Q

What does excessively worn or scored piston skirts rings or cylinder liners indicate?

A

Abnormal maintenance or operating conditions and should be corrected to avoid a failure.

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8
Q

Jacking concerns

A

It is very hard on the the starting motor

Not an accurate way to position the crankshaft

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9
Q

Why barring is recommended prior to starting large Diesel engines

A

To prevent hydro-lock due to to possible accumulation of fluids in combustion chamber

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10
Q

When is crankshaft removal and when is it not needed

A

Removal is needed for replacement ONLY

Not needed for inspection

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11
Q

Removing all journal bearing caps will damage crankshaft why?

A

Due to bending or dropping of it.

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12
Q

Best engineering practice for caps

A

Mark caps to proper location for re-installation

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13
Q

How to prevent crankshaft damage when installing bearings and cap

A

Install in same location

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14
Q

When should crank web deflection readings only be taken with cutter?

A

In water

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15
Q

Where to record readings for Engines with crank journals of 4 inches or more?

A

Readings are to be recorded in machinery history + reported in cutter engineering report

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16
Q

When are web deflection readings normally taken?

A

When it is cold

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17
Q

Not all components are used on what types of engines?

A

Engines with overhead camshafts

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18
Q

What may be linked to the turbocharger?

A

Air cleaner and the air silencer

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19
Q

What will intake system have either/ or but not both?

A

An after cooler or an inter cooler

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20
Q

Who normally sets the pressure differential limits for changing elements?

A

By the manufacturer of the engine

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21
Q

Rotate cleaning devices only in what rotation?

A

In a clockwise rotation. Reversing can damage the element

22
Q

What cylinder liner types are there?

A

Dry

Wet

Water-jacketed

23
Q

Types of bearings?

A

Anti-friction

Roller type

Friction

24
Q

4-stroke steps

A

Intake (suck)

Compression (squeeze)

Power (bang)

Exhaust (blow)

25
Q

2-stroke steps

A

Intake
[compression , power]
Exhaust
Scavenging

Intake and exhaust done by blower

26
Q

Prevents air or fluid from entering/exiting pump stationary seat, rotary seal, spring

Inspect with gloves

CLEAN before installing

A

Mechanical seal

27
Q

Water flinger use, process, type

A

If water leaks by seal it prevents stuffing box water from entering bearing housing

Spins, shoots it out

Is rubber grommet or gasket goes inside pump

28
Q

Sits inside pump casing

Push all the way in

Held in pump by rubber cap or “seal seat”

A

Stationary seat

29
Q

Attaches to shaft. Seals up. It rotates. Make sure to inspect them

A

Rotary seal

30
Q

What is the bore?

ICE

A

The DIAMETER of the engine’s cylinder

31
Q

Definition of stroke?

ICE

A

DISTANCE piston travels from [TDC to BDC] top of cylinder to the bottom

32
Q

How is power rated?

ICE

A

In units of Horsepower

33
Q

What is indicated horsepower?

A

Power transmitted to the pistons by the gas in the cylinders & is mathematically calculated

34
Q

What is Brake horsepower?

A

Amount of usable power delivered by the engine to crankshaft

35
Q

Definition of torque

A

Measure of engine’s ability to apply the power it is generating

36
Q

Compression stroke?

A

Where engine compresses cylinder full of air into much smaller volume before fuel injected and combustion occurs

37
Q

What is the portable de watering pump is primarily designed for what?

A

De watering

38
Q

What GPM and at what foot suction lift is P-6 capable of?

A

Delivering over 250 gpm at 12 foot suction lift

39
Q

Complete dewatering kit weight?

A

Less than 120 lb

40
Q

Contents inside p-6 pump can

A
  • P-6 portable dewatering pump
  • Removable portable fuel tank (2.5 gal) (4-6 hours of operation)
  • 15 ft long, 3 in. Diameter suction hose w/quick disconnect fitting (black)
  • 20 ft long 3 in. Diameter fiber reinforced discharge hose w/quick disconnect fitting (blue)
  • spare pull rope for starting engine w/o recoil starter
  • flashlight
  • laminated instruction card in 4 languages
  • an operation and maintenance manual
41
Q

P-6 fuel tank gallon amount, type of fuel, and typical running time

A

2.5 gallons

Unleaded fuel

4-6 hours

42
Q

Throttle opening position when first starting p-6 pump?

A

Position at 1/3

43
Q

What to do with choke once p-6 pump starts

A

Shut off

44
Q

Limit you can operate p-6 pump w/o water

A

don’t operate for more than 2 minutes

45
Q

What to do when pump is running but no water flow

A

Operate hand primer until water is flowing from the discharge hose

46
Q

How long to flush P-6 with fresh water when shutting down pump

A

Approximately 5 minutes

47
Q

How often P-6 should be inspected/test run

A

Once a month

48
Q

What does P-6 initial 20 hour maintenance entail

A

Replacing engine fuel filter

Replacing engine oil

49
Q

Do not use P-6 where

A

Below decks or in confined spaces-due to CO poisoning

50
Q

PPE required when operating the pump

A

Hearing protection

51
Q

Class ; maximum safe voltage ; label color for CG approved insulating gloves

A

MK3 UNIT 3. Electrical & electronic
3-1-10

Class 0 = 1,000 volts = red label color

Class I = 7,500 volts = white label color

Class II = 17,500 volts = yellow label color

Class III = 26,500 volts = green label color

SWE/Useful tid Bits (7 decks)

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