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Trans & Torque Converters > Trans & Converters > Flashcards

Trans & Converters Flashcards

1
Q

3 basic elements of a torque converter

A

Pump/ impeller
Stator
Turbine

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2
Q

Describe a Pump impeller

A

Turned by engine

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3
Q

What is the Stator

A

Splined to a ground sleeve has a one way clutch

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4
Q

Where is the Turbine

A

Splined to input shaft of transmission

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5
Q

What way does a torque converter rotate

A

Counter clockwise

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6
Q

What is coupling

A

When everything is moving as one unit

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7
Q

Components of AMT

A

Torque converter
Multi disc clutches
Planetary gearing compounded
Hydraulic circuitry

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8
Q

What is Hydro dynamic

A

Low pressure high flow

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9
Q

Torque converter connecting members

A

Transfers torque , multiplies torque , dampens torsional vibrations

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10
Q

What are the Two oil flow phases

A

Vortex
Rotary

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11
Q

What is Vortex flow

A

Torque multiplied, fluid forces into a vortex only if stator is stationary

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12
Q

What is Rotary

A

Coupling phase
Stator is free to move , rotary flow

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13
Q

Describe Drive and driven in torque converter

A

Impeller drive
Turbine driven
Gives power output to transmission

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14
Q

What is the Stator operation

A

One way clutch
Faster oil flow and higher torque moves stator

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15
Q

Hydrostatic

A

High pressure low flow

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16
Q

Average torque multiplication

A

2:1

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17
Q

Over running clutch types

A

Spring and rollers
Sprag clutches

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18
Q

Stall speed

A

Max engine rpm when engine is at full throttle, turbine is stationary

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19
Q

Stall test precautions

A

Don’t stall test in reverse
Don’t test longer than 30 seconds
Oil temp under 300 degrees

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20
Q

Stall test spec are out by 200 rpm

A

Tranny slipping
Oil level Low
Oil level too high
Oil airated

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21
Q

If stall test fine but high fluid temp

A

Stator May be stuck
Cooler may not be operating
Engine cooler not working

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22
Q

Free wheel stator

A

Low speed starts
No power low speeds
Elevated oil temp

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23
Q

Stuck stator

A

High fluid temp
Not reaching top speed

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24
Q

3 phases

A

Torque multiplication
Coupling phase
Lock up

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25
Q

Low power complaint

A

Stator , do stall test

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26
Q

Tranny fluid

A

Designed per tranny for differ t materials that need to be lubed

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27
Q

Clutch assemblies and clutch packs

A

3 steel 3 friction
5 steel 5 friction

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28
Q

Clutch assembly

A

Allows for the transfer of torque through planetary gearset

Torque transfer and brake Device

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29
Q

Two types of clutch Discs

A

Friction and steel reaction discs

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30
Q

Steel reaction discs

A

Stationary , don’t rotate

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31
Q

Actuating Piston assembly’s are

A

Hydraulically actuated to apply clutch

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32
Q

Max difference in speed = Max ____

A

Torque multiplication

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33
Q

Stall tests can be within how many RPM

A

150

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34
Q

Max oil temp

A

300F

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35
Q

Retarder

A

Is for breaking

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36
Q

Forward clutch used for

A

For any forward speed

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37
Q

Trimmer valve

A

Shift shock
Absorbing pressure spike

38
Q

Modulater valve

A

Senses throttle position
Affects shift timing
Spring tension hydraulic pressure
Highest at idle

39
Q

Signal valve

A

Sends signal to relay
Controls minimal flow
Sends signal to apply clutch
Trimmer between signal and relay in parallel

40
Q

Governor

A

Source for main pressure
Highest at road speed
Senses road speed through resistance

41
Q

Higher spring tension on_______

A

Higher gears

42
Q

First gear

A

Selector valve

43
Q

Priority valve

A

One way check valve
Makes sure pressure is there for shifting
Keeps pressure

44
Q

Over filling causes

A

Airation

45
Q

Under full

A

Low power
Hot

46
Q

Clogged breather

A

Force oil up into fillertube
And cause unaccurate reading

47
Q

Only sealant in tranny

A

Petro Jelly

48
Q

Check govener filter when?

A

Every service

49
Q

Check breathers

A

Every service

50
Q

Oil begins to oxidize at what temp

A

150F and every 25 after decreases life by 50%

51
Q

Hydro mechanical

A

Non electric spring spoil valve body

Mechanical and hydraulic controlled only

52
Q

Tranny oil pump

A

Positive displacement

53
Q

Oil moves to pump from?

A

Atmospheric pressure 14.7 at sea level

54
Q

Air ration causes

A

Cavitation

55
Q

Pressure caused by

A

Restriction

56
Q

Relief valve

A

Maintains pressure , reroutes to inlet

57
Q

Flow rate changed by

A

RPM

58
Q

PTO

A

set up on trans off of forward clutch housing
Rotated at turbine speed

59
Q

Bigger trans PTO

A

PTO off of pump speed determined by engine

60
Q

4 speed is how many planetary

A

3

61
Q

5 speed has how many planetary

A

4 planetary, added planetary at back of trans for low gear

62
Q

Converter lock up

A

Locks turbine to case
Eliminates slipping , all turns same speed

63
Q

Split guide ring

A

Reduces turbulence and guided oil

64
Q

Before a Stall test

A

Check oil
Install temp gauge before cooler
Stay below 300F
Get spec for RPM
Spec for gear selection

65
Q

500 rpm above on stall test

A

Slipping clutch
Airtated oil
Not enough pressure

66
Q

Under by 200 rpm on stall test

A

Stator free wheeling
Low oil

Confirm by road test

67
Q

After stall test procedure

A

Put in N
12-1500 rpm
Let cools down

68
Q

Oil not cooling down but goo stall test

A

Stuck stator, road test would show good take off no top speed

69
Q

Fluid coupling / torque converter

A

Fluid coupling
No stator
Straight blades

Torque converter
Curved blades
Stator

70
Q

Vortex flows

A

Between turbine and impeller

71
Q

Off road has a what kind of stator

A

Fixed

72
Q

High way has what kind of stator

A

Rotating stator

73
Q

Vortex flow does what to stator

A

Locks it

74
Q

Frictions plates do what

A

Transfer torque, lots of them because it needs lots of surface area

75
Q

Max forward reduction

A

Smallest driving largest

76
Q

Minimum forward reduction

A

Ring input sun output

77
Q

Max overdrive

A

Carrier input ring held
Sun output

78
Q

Slow reverse

A

Hold carrier
Ring driving sun - fast
Sun driving ring -slow

79
Q

PTO has a clutch or no

A

No driven by turbine

80
Q

Lock Up clutch splined to

A

Housing

81
Q

Pump hub inspection points

A

Seal ring groove
Front seal rings
Pump drive flange

82
Q

Lock up in what gear

A

Over drive

83
Q

Pump turns at same speed as ______

A

Engine

84
Q

Input shaft locks and turns ?

A

Main shaft attached to sun gear when forward clutch engaged.

Lock everything

85
Q

How many ratios in planetary

A

5 forward 2 reverse

86
Q

When is planetary in Neutral

A

When there is a input but no held

87
Q

Direct drive

A

Locking two- 3 gears together

88
Q

3 phases

A

Torque multiplication
Coupling
Lock up

89
Q

Inhibitor valve

A

Prevents down shift from second to first when road speed is to high

90
Q

Lock up circuit

A

Controlled by modulater valve

91
Q

Which retarder is located between torque converter and trans gearing

A

Input retarder

92
Q

Which retarder applies friction clutch while charging

A

Output retarder

Trans & Torque Converters (1 decks)

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