Powerstrain- Cody
First gear has a ____ gear ratio
3:1
Typically, _____ or _____ gear oil is recommended for manual transmissions
80W or 90W
What may cause hard shifting?
A bent or misaligned shift rod
In third gear, the gear ratio is approximately_____. A) 1:1 B) 2:1 C)3:1 D) 4:1
A) 1:1
What two functional differences are there between an automatic transmission and a manual transmission?
Automatic shift gears and releases clutch automatically and more smoothly, it also uses planetary gear sets. Manual you shift gears and uses helical gear sets
In second gear, the gear ratio is approximately_____. A) 1:1 B) 2:1 C) 3:1 D) 4:1
B) 2:1
An electric switch, known as a _____ switch, is closed by the action of the reverse gear linkage. A) Lamp B) Back-up light C) Ignition spark D) Transmission
B) Back-up light
How is gear ratio calculated?
By dividing the number of teeth on the driven gear by the number of teeth on the drive gear
Functions of oil pan:
Collects and stores a supply of transmission oil
A ____ is part of a modern torque converter A) Impeller B) turbine C) Stator D) All of the above
D
Which of the following is NOT a problem that can cause gear grinding during shifts? A) worn or damaged synchronizers B) excess wear in shafts C) worn shift forks D) low or contaminated lubricant
D
Functions of Transmission case
Encloses the clutches, bands, gear sets, and inner ends of the transmission shafts
Bolts to the rear of case
Extension housing
What are the three methods of transmitting power in an automatic transmission?
Fluid, friction, & gears
How should you begin diagnosis of a transmission problem?
Gather basic information from the customer. Then test drive the vehicle to verify complaint. Find out which gears in the transmission act up. Does it happen at specific speeds?
Transfers power from clutch disc to countershaft gears
Input shaft
Why replace all gasket and seals in the transmission, eve if they are not leaking before teardown?
It could start to leak after reassembly
THe (input, output) shaft connects the driving components in the transmission with the drive shaft
Output
Before installation, place a small amount of grease in the ____ and on the inner surface of the _____.
Pilot bearing throw-out bearing
Define gears
Round wheels with teeth machined on their perimeters
What is the most common type of compound planetary gearset used in automatic transmissions?
Simpson
Functions of extension housing:
Slides over and supports the output shaft
If a transmission is noisy in all gears, what does that tell you?
Something common to all the gears is at fault
What is the difference between a spur gear and a helical gear
Spur gears are cut parallel to the centerline of the gear shaft. Helical gears are machined at an angle to the centerline of the gear shift
What is a stationary shaft splined to the stator assembly?
Stator support
What does a planetary gear set consist of?
Sun gear, several planet gears, a planet gear carrier, and a ring gear
True or False? During transmission installation, shift the transmission into high gear to help position the input shaft into the clutch disc.
True
When does rear reduction occur
When a small gear drives a large gear to increase turning force or torque.
In your own words, describe a manual transmission
basically you are the transmission, meaning you tell the car when to shift gears
If gear tooth wear is uneven, check the shaft ____ and shafts
bearings
During gear engagement, the ____ rubs on the side of the gear cone, setting up friction between the two
blocking ring
In first gear, the gear ratio is approximately______. a) 1:1 b) 2:1 c) 3:1 d) 4:1
c) 3:1
Supports transmission bearings and shafts
case
In neutral, all the synchronizer sleeves are located in the _____ of their hubs.
center
Automatic transmission ____ and _____ are friction devices that drive or lock planetary gearset members
clutches and bands
A ____ planetary gearset combines to planetary units in one housing or ring gear
compound
turns the gears on the output shaft
countershaft gears
Name two things that can cause transmission failure
driver abuse and normal wear after prolonged service
Name the two general types of transmission linkage
external shift Rod and internal shift rail
True or false? An automatic transmission uses a very thick and heavy flyhweel
false
True or false? When blowing bearings dry with compressed air, allow the bearing to spin
false
True or false? With the transmission out of the vehicle, there is usually no reason to disassemble and inspect the condition of the clutch
false
true or false? the one-way clutch locks the stator when the impeller is turning slower than the turbine
false
The torque converter is very large and heavy, which allows it to serve as a ____ to smooth out engine power pulses
flywheel
Shift ____ fit around the synchronizer sleeves to transfer movement from the gear shift linkage to the sleeves
forks
In your own words, describe how an automatic transmission clutch functions
friction devices that drive or lock gearset members
covers front transmission bearing
front bearing hub
What should a manual transmission in good condition be able to do
increase torque going to the drive wheels for quick acceleration. Supply different gear ratios to match different engine load conditions. Have a reverse gear for moving backwards. provide the driver with an easy means of shifting gears. Allow downshifting into any gear while the vehicle is moving, with all gears synchronized.operate quietly, with maximum power loss.
An automatic transmission (input, output) shaft connects the torque converter with the driving components in the transmission
input
Name the basic parts of a manual transmission
input shaft, transmission gears, synchronizers, shift forks, shift linkage, gear shift lever, output shaft, transmission case
Functions of bell housing
it surrounds the torque converter and holds the transmission against the engine
A grinding sound when shifting is commonly caused by incorrect transmission _____ adjustment
linkage
A ____ has an internal friction clutch for clamping the impeller to the turbine
lockup torque converter
Torque ____ refers to the ability of A torque converter to increase the amount of engine torque applied to the transmission input shaft
maltiplication
Holds the output gears and synchronizers
output shaft
A ____ ratio results when a larger gear drives a smaller gear
over drive
In many modern transmissions, high gear is a _____ gear ratio
overdrive
Gear reduction can also be produced in the planetary gearset by turning the (sun,ring) gear and holding the (sun,ring) gear
ring sun
Name two causes of manual transmission lubricant leaks
ruptured gaskets and worn seals
The ____ speed of a torque converter occurs when the impeller is at maximum speed without rotation of teh turbine
stall
prevents hear grinding or clashing
synchronizer
What happens when a transmission jumps out of gear?
the drivers shift lever "pops" or moves into neutral while driving
A ____ combines both the transmission and the differential into a single housing
transaxle
True or False? When repairing a manual transmission, you must be able to identify the exact type of transmission
true
True or false? In simple terms, a torque converter works like the force of moving air generated by one fan moving the blades of another fan
true
true or false? Very little torque is needed to propel a vehicle at a constant speed on level ground
true
How many planetary gearsets does an automatic transmission use?
two or more