205F - Non-Electric Cranking Systems Flashcards

1
Q

Air powered cranking systems will crank the engine for approximately how many seconds?

A

9 seconds

205F pg. 1

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2
Q

Hydraulic powered cranking systems will crank the engine for approximately how many seconds?

A

4 seconds

205F pg. 1

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3
Q

Air cranking motor assemblies consist of what three main components?

A
  • Air motor
  • Reduction gear
  • Drive pinion mechanism

205F pg. 4

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4
Q

What are two common air cranking motor internal design styles?

A
  • Vane
  • Turbine

205F pg. 5

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5
Q

In an air cranking motor, what is the reduction gear set designed to achieve?

A

Increase torque while decreasing rpm

205F pg. 5

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6
Q

What are the two main types of air cranking motor drive mechanisms?

A
  • Inertia drive
  • Overrunning clutch

205F pg. 6

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7
Q

How does an inertia drive mesh the drive pinion with the ring gear?

A

The inertia developed when the starter initially energizes slides the drive pinion outward along the spiral-cut shaft screw and into mesh with the ring gear.

205F pg. 6

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8
Q

How does an air cranking motor overrunning clutch mesh the drive pinion with the ring gear?

A

Uses an air shift mechanism to engage the drive pinion mechanism.

205F pg. 6

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9
Q

True/False
The accumulator used in a hydraulic cranking system is designed to absorb hydraulic pressure fluctuations during starter motor operation.

A

False.
Accumulator provides the pressure to turn the starter motor.

205F pg. 17

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10
Q

What is the airspeed velocity of an unladen swallow?

A

African or European?

Monty Python and the Holy Grail

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