1. Automotive Service Modern Auto Tech Study Guide Chapter 57
Pages
Automatic Transmissions
17 Points

2. Automotive Service
An automatic transmission senses engine _________ and engine ________
to determine shift points.
Speed, Load
Torque, Speed
Load, Vacuum

3. Automotive Service
Internal hydraulic pressure is used to _____________ gears. A PCM can also
be used to sense conditions and actuate hydraulic pressure to control shift points inside of an automatic transmission (AT).
Shift
Cancel
Delete

4. Automotive Service Bands TQC P Governor u Clutches m Planetary p
Gear Sets
Valve Body
Vacuum Modulator or
Throttle Valve
PCM & Shift Solenoids

5. Automotive Service
3. Automatic transmissions use __________, ______________ & _________ as
methods to transmit power.
Fluids, Friction Gears
Fluids, Blood, Skin
Fluids, Friars, Gears

6. Automotive Service
The main external parts that make up an AT are the _______ housing,
transmission ________, oil _____, and the extension housing at the rear.
Bell, Case, Pan
Dell, Case, Pan
Well, Case, Pan

7. Automotive Service
The ___________ __________________ is a fluid clutch that is the means
of coupling and uncoupling the engine from the transmission.
ATF is the fluid used inside the transmission. It’s color is red.
Flex Plate
Torque Converter
Harmonic Balancer

8. Automotive Service
Besides the housing, a converter is made up of the __________________ or
pump (input), the _________, which is the driven or output member, and the stator, which is designed to improve oil circulation inside.
Impeller, Compressor
Impeller, Turbine
Propeller, Turbine

9. Automotive Service
The ________ __________ connects the crankshaft to the torque converter &
holds the starter ring gear.
Fly Wheel
Flex Plate
VIN Plate

10. Automotive Service
A ____________ torque converter improves fuel economy (mpg) by directly
connecting the engine to the input shaft of the transmission.
PCM-actuated, it takes away lost motion from inside the torque converter.
Lockup
Backup
Wrapup

11. Automotive Service
An AT has an _________ shaft or turbine shaft and an ____________ shaft
on the same axis or centerline.
Input, Output
Input, Turbine
Turbo, Output

12. Automotive Service
10. Automatic transmissions use _________________ gear sets, consisting of
a sun gear, planetary pinions in a carrier and an internal ring gear.
Reductions, directs, overdrives, reverse, & neutral are all possible!
Helical
Hypoid
Planetary

13. Automotive Service
11. Wet, multi-disc _________________ and __________ are the friction devices
used to drive and lock planetary gear set components in order to achieve
different gear ratios and directions of rotation.
Clutches, Flywheels
Clutches, Bands
Clutches, Torringtons

14. Automotive Service
11. Wet, multi-disc _________________ and __________ are the friction devices
used to drive and lock planetary gear set components in order to achieve
different gear ratios and directions of rotation.
Clutches, Flywheels
Clutches, Bands
Clutches, Torringtons

15. Automotive Service
12. Clutches are applied by fluid pressure and released by _______________.
_______ are actuated by hydraulic servos, which are a form of “apply pistons”.
Springs, Bands
Springs, Discs
Springs, Drums

16. Automotive Service
13. Bands are steel ___________ with linings of friction materials.
They clamp around clutch drums to stop rotation. Bands are often adjustable,
sometimes even from the outside of the transmission case.
Straps
Belts
Springs

17. Automotive Service
14. One-way roller or sprag clutches are often called ______________ clutches.
They can hold in one direction and allow components to spin freely in the other
direction. They operate instantly without fluid pressure.
Underrunning
Overrunning
Marathonning

18. Automotive Service
15. Transmission ______________ are needed because of the tremendous heat
developed in the converter.
Heaters
Inverters
Coolers

19. Automotive Service
16. The transmission __________ generates the fluid flow needed to develop
pressure to apply hydraulic components and the fluid flow for lubrication.
Pump
Sump
Dump

20. Automotive Service
17. The manual valve is operated by the action of the ____________ selecting
gears. The _______________ modulator valve senses engine load and the
_______________ valve senses vehicle speed. Both are used
to determine shift points. The kick down valve is used to downshift for fast
acceleration (passing gear).

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24. Automotive Service
CVT
Continuously
Variable
Transmission

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27. Automotive Service
The easiest way to remember which mode a planetary gearset is in is to
look at the planetary carrier.
Carrier drives = overdrive
Carrier driven = reduction
Carrier held = reverse
Two members held = direct drive
Nothing driven or held = neutral
Parking Pawl engaged to the output shaft = park

28. Links Automatic Trans Animation Fiesta Power-Shift
Fluid Coupling (Army)
Benz Power-Flow
Parts / Rebuild