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Trans & Torque Converters > Trans & Converters > Flashcards

Trans & Converters Flashcards

(92 cards)

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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
Low power complaint
Stator , do stall test
26
Tranny fluid
Designed per tranny for differ t materials that need to be lubed
27
Clutch assemblies and clutch packs
3 steel 3 friction 5 steel 5 friction
28
Clutch assembly
Allows for the transfer of torque through planetary gearset Torque transfer and brake Device
29
Two types of clutch Discs
Friction and steel reaction discs
30
Steel reaction discs
Stationary , don’t rotate
31
Actuating Piston assembly’s are
Hydraulically actuated to apply clutch
32
Max difference in speed = Max ____
Torque multiplication
33
Stall tests can be within how many RPM
150
34
Max oil temp
300F
35
Retarder
Is for breaking
36
Forward clutch used for
For any forward speed
37
Trimmer valve
Shift shock Absorbing pressure spike
38
Modulater valve
Senses throttle position Affects shift timing Spring tension hydraulic pressure Highest at idle
39
Signal valve
Sends signal to relay Controls minimal flow Sends signal to apply clutch Trimmer between signal and relay in parallel
40
Governor
Source for main pressure Highest at road speed Senses road speed through resistance
41
Higher spring tension on_______
Higher gears
42
First gear
Selector valve
43
Priority valve
One way check valve Makes sure pressure is there for shifting Keeps pressure
44
Over filling causes
Airation
45
Under full
Low power Hot
46
Clogged breather
Force oil up into fillertube And cause unaccurate reading
47
Only sealant in tranny
Petro Jelly
48
Check govener filter when?
Every service
49
Check breathers
Every service
50
Oil begins to oxidize at what temp
150F and every 25 after decreases life by 50%
51
Hydro mechanical
Non electric spring spoil valve body Mechanical and hydraulic controlled only
52
Tranny oil pump
Positive displacement
53
Oil moves to pump from?
Atmospheric pressure 14.7 at sea level
54
Air ration causes
Cavitation
55
Pressure caused by
Restriction
56
Relief valve
Maintains pressure , reroutes to inlet
57
Flow rate changed by
RPM
58
PTO
set up on trans off of forward clutch housing Rotated at turbine speed
59
Bigger trans PTO
PTO off of pump speed determined by engine
60
4 speed is how many planetary
3
61
5 speed has how many planetary
4 planetary, added planetary at back of trans for low gear
62
Converter lock up
Locks turbine to case Eliminates slipping , all turns same speed
63
Split guide ring
Reduces turbulence and guided oil
64
Before a Stall test
Check oil Install temp gauge before cooler Stay below 300F Get spec for RPM Spec for gear selection
65
500 rpm above on stall test
Slipping clutch Airtated oil Not enough pressure
66
Under by 200 rpm on stall test
Stator free wheeling Low oil Confirm by road test
67
After stall test procedure
Put in N 12-1500 rpm Let cools down
68
Oil not cooling down but goo stall test
Stuck stator, road test would show good take off no top speed
69
Fluid coupling / torque converter
Fluid coupling No stator Straight blades Torque converter Curved blades Stator
70
Vortex flows
Between turbine and impeller
71
Off road has a what kind of stator
Fixed
72
High way has what kind of stator
Rotating stator
73
Vortex flow does what to stator
Locks it
74
Frictions plates do what
Transfer torque, lots of them because it needs lots of surface area
75
Max forward reduction
Smallest driving largest
76
Minimum forward reduction
Ring input sun output
77
Max overdrive
Carrier input ring held Sun output
78
Slow reverse
Hold carrier Ring driving sun - fast Sun driving ring -slow
79
PTO has a clutch or no
No driven by turbine
80
Lock Up clutch splined to
Housing
81
Pump hub inspection points
Seal ring groove Front seal rings Pump drive flange
82
Lock up in what gear
Over drive
83
Pump turns at same speed as ______
Engine
84
Input shaft locks and turns ?
Main shaft attached to sun gear when forward clutch engaged. Lock everything
85
How many ratios in planetary
5 forward 2 reverse
86
When is planetary in Neutral
When there is a input but no held
87
Direct drive
Locking two- 3 gears together
88
3 phases
Torque multiplication Coupling Lock up
89
Inhibitor valve
Prevents down shift from second to first when road speed is to high
90
Lock up circuit
Controlled by modulater valve
91
Which retarder is located between torque converter and trans gearing
Input retarder
92
Which retarder applies friction clutch while charging
Output retarder

Trans & Torque Converters (1 decks)

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