303c and d

Question 1

What type of transmission would you find in a cycling application machine?

Answer 1

Power shift

Question 2

What type of transmission would you find in a hauling application ?

Answer 2

Automatic

Question 3

First speed reduction?

Answer 3

Internal gear held
Sun gear input
Carrier output

Question 4

Second speed reduction?

Answer 4

Internal gear input
Sun held
Carrier output

Question 5

First speed overdrive?

Answer 5

Internal gear output
Sun held
Carrier input

Question 6

Second speed overdrive?

Answer 6

Internal gear held
Sun gear output
Carrier input

Question 7

First speed reverse?

Answer 7

Internal gear output
Sun gear input
Carrier held

Question 8

Second speed reverse?

Answer 8

Internal gear input
Sun gear output
Carrier held

Question 9

How do you get direct drive in a planetary?

Answer 9

Locking two members together

Driving to members at the same speed

Question 10

When you have a planetary gear transmission with dual inputs. The output will be what?

Answer 10

Somewhere in between the two input speeds

Question 11

What is tooth speed?

Answer 11

Refers to the number of gear teeth passing by a given point in a given period of time. And is measured in teeth per second

Question 12

If you are rotating the both inputs at the same tooth speed but in opposite directions what do you get?

Answer 12

Neutral

Question 13

2 clutch components?

Answer 13

Discs

Plates

Question 14

What are clutch discs?

Answer 14

Steel discs that have friction material bonded to them. Either sintered bronze or a composite material

Question 15

Where are clutch plates located?

Answer 15

Between every pair of clutch discs in a assembly

Question 16

What type of clutches to countershaft transmissions use?

Answer 16

Rotating clutches

Question 17

Powershift transmission control circuits?

Answer 17

Clutch application circuit
Torque converter charge circuit
Transmission lubrication circuit

Question 18

Where is oil sent to first in a transmission system?

Answer 18

Shift selector valve

Question 19

What can you do to move a machine equipped with a powershift or auto transmission?

Answer 19

Elevate drive wheels
Remove drive axles/ sun gear
Remove driveline/driveshaft

Question 20

Functions of a transmission scavenge pump?

Answer 20

Take leakage oil and sends it to reservoir. Preventing overheating from oil build up

Question 21

Speed selector spool?

Answer 21

Directs oil from the transmission charge pump to the speed clutches

Question 22

Modulation relief valve?

Answer 22

Controls maximum clutch application pressure

Question 23

Load piston?

Answer 23

Controls the rate of pressure rise in the clutch pistons. This is called clutch modulation and it is to prevent shift shock

Question 24

What is another name for the relief valve and what does it do?

Answer 24

Inlet relief valve. Acts as a torque converter pressure relief by limiting max pressure inside the torque converter when oil is cold

Question 25

Direction selector spool?

Answer 25

Directs oil from the transmission charging pump to the direction clutches to produce forward or reverse

Question 26

Steel reaction discs?

Answer 26

Notched on outside to engage in clutch housing

Question 27

Friction discs?

Answer 27

Teeth on inside that engage with splines on the outside of planetary ring gear

Question 28

Piston?

Answer 28

Hydraulically apply clutches

Question 29

Return springs?

Answer 29

Mechanically force pistons apart

Question 30

Machine ground speed and throttle pedals circuits are supplies by what?

Answer 30

Clutch pressure circuit

Question 31

Governed circuit?

Answer 31

Provides a ground speed reading off the back of the transmission to better control shift operation

Question 32

What else is governed pressure used for?

Answer 32

Used to apply and release the lockup clutch in the torque converter

Question 33

Purpose of modulator circuit?

Answer 33

Used to alter shift points in relation to operator demand. Allows the engine to achieve max horsepower before a shift is made Generates greater machine momentum before a shift

Question 34

4 types of shift dampening devices?

Answer 34

Orifice control Modulation Trimmer Accumulator

Question 35

If a clutch is released more quickly than the clutch being applied is engaged during a shift what happens?

Answer 35

Condition known as rpm flare. Machine free wheels until clutch is applied

Question 36

What is it called when the machine briefly tries to operate 2 gears at once?

Answer 36

Shift shock

Question 37

Orifice control?

Answer 37

Uses an orifice to control clutch release rates my metering outlet oil from a clutch

Question 38

Shift control system components?

Answer 38

Input components Processing components Output components

Question 39

Power supply?

Answer 39

Electronic control systems require a stable voltage and adequate supply of current. If not it’s will run funny or not operate all together

Question 40

Speed sensor locations

Answer 40

Output of transmission Turbine

Question 41

Processing components control what factors?

Answer 41

Up shifts and downshifts Clutch modulation Provides diagnostic info Provides warning to operator