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Cummins Diesel > Notes > Flashcards

Notes Flashcards

1
Q

B-Series Engine characteristics

A

4 Stroke, 12 VLV, 5.9L, 6 CYL INLINE, 4.02” Bore, 4.72” Stroke

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2
Q

Horsepower/RPM for B-Series

A

6BTA5.9M2= 300HP @ 2800 RPM

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3
Q

What is the difference between 6BTA5.9M1 AND 6BTA5.9M2

A

M2 is S/W Cooled

M1 is J/W Cooled

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4
Q

What is the firing order of the QSM/B series?

A

1-5-3-6-2-4

15,36,24

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5
Q

What is the temp of the compressed air in the cylinder for combustion?

A

1000°F or greater

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6
Q

What does 6BTA5.9M2 stand for?

A 
6- Model #
B- Series(FAMILY OF ENGINE)
T- Turbocharged
A- Aftercooler
5.9- Displacement in Liters
M-Marine 
2- Design Phase
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7
Q

Where is the B-Series Data plate located?

A

On the gear train cover

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8
Q

Where is the QSB data plate located

A

On top of the valve cover

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9
Q

Purpose of Turbo and After cooler?

A

Turbo forces air to the engine while the aftercooler cools the air to allow more air into the cylinder giving bigger combustion ( air becomes more dense)

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10
Q

What is the idle speed of the 6BTA

A

750 RPM

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11
Q

QSB- ENGINE series characteristics

A

4 Stoke, 24 VLV, 5.9L , 6 CYL Inline, 4.02” Bore, 4.72” Stroke

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12
Q

QSB5.9 Horsepower

A

210-425 HP

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13
Q

What does QSB5.9 Stand for?

A

Q- Quantum
S-Series
B-Family
5.9- liters

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14
Q

List what you can find on engine data plate

A

ESN, firing order, horsepower

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15
Q

What two gears on the B-Series are stamped for timing?

A

Crankshaft and camshaft

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16
Q

What does oil passages eliminate?

A

External piping

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17
Q

Classify engine block

A

One piece cast construction
Main structural part of engine
Support and aligns all structural components
Drilled internal passages for water & oil

18
Q

Crankshaft construction

A

One piece forged steel
Cross drilled passages for lubrication
Seven main journals
Two counterweights

19
Q

Main bearing purpose

A

Main bearings assist in aligning and supporting the crankshaft in the engine block. Providing a replaceable wearing surface

20
Q

What type of main bearings

A

Tri-metal. ( aluminum, copper, steel)

21
Q

What aids in aligning a bearing in a seat

A

Tangs

22
Q

Cummins B-Series has how many main bearings?

A

7

23
Q

What is the function of a crankshaft?

A

To turn reciprocation motion to rotary motion

24
Q

What is the purpose of the crankshaft thrust bearing?

A

To absorb axial trust

25
Q

What is the purpose of the vibration dampener and what are the types ?

A

To absorb torsional vibrations of the crankshaft.

Viscous, metal and rubber

26
Q

Crankshaft oil seal characteristics

A

Front seal- Teflon lay down lip ( scroll type)

Rear seal- teflon lay down lip ( scroll type)

27
Q

What is marked on the QSB Dampener

A

Marking for TDC

28
Q

When installing connecting rods or main bearing caps how are they oriented with the block

A

Cap # faces oil cooler side

29
Q

What type of vibrational dampener is used on the 6BTA5.9M

A

Viscous

30
Q

Purpose and characteristics of Camshaft

A

Camshaft is driven by the crankshaft

The camshaft actuates the valve assemblies

31
Q

What is unique about the gear train?

A

Timing gears are helical type allowing quieter operation and more tooth contact

32
Q

What does the camshaft drive on the B-Series?

A

B- Series - seawater pump & fuel pump

QSB- fuel pump

33
Q

How is the gear train lubricated

A

Splash lubrication and oil carry over

34
Q

Where is the thrust plate located

A

Located between the camshaft and the engine block

35
Q

What is the timing pin used to find?

A

TDC of # cylinder

36
Q

Where is the timing pin hole located

A

Backside of the camshaft

37
Q

What are pistons made of?

A

One piece cast type aluminum

38
Q

How are the pistons positioned into the cylinder?

A

Word “ front” faces towards the front of the engine.

39
Q

Purpose of a piston

A

Transfers the force of combustion to the connecting rod

40
Q

How many piston rings does B/QSB series have ?

A

3 piston rings.

2 compression rings
1 oil ring

Cummins Diesel (1 decks)

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