Manuel transmissions chapter 122

Bevel gears turn power at?

90°

Internal teeth

Internal circumference

If you have irregular teeth that are walking on each other it is called what?

Keystoing

Which part is splined to the clutch disc?

Main gear

How do you calculate a gear ratio?

Drive gear/Driven gear

Direct drive

Same speed

How are teeth cut on spur gears and how are the teeth laid?

Straight-cut teeth around the entire circumference, all teeth lie parallel to the centerline

Which part of a synchronizer is splined to a shaft?

Hub

Gear reduction

Torque, under-drive. Engine speed faster than transmission speed

24 teeth on driven gear and 8 teeth on the drive gear?

3:1

What makes the rotation of the gear train not rotate at different speeds?

A idler gear in the middle of the driven, and drive gear

A manual transmission with paper stop rings must use what fluid?

ATF, because they need a large coefficient of friction

What material are synchronizer made of?

Brass, copper, sintered material

Each gear has how many synchronizers?

2 per gear

12 teeth on driving gear and 24 teeth on driven gear is what gear ratio?

2:1

What are the advantages and disadvantages of a helical gear?

Advantage: quite, mesh together easier than spur Disadvantages: Cut at an angle, cant control heat

What are the advantages and disadvantages of spur gears?

Advantage: strong Disadvantage: loud

Overdrive

Any numerical number less that .9

A customer complained of hard shifting particularly into first gear and reverse. Technician A says that the blocking ring maybe worn. Technician B says that the clutch may be defective or out of adjustment? Which technician is correct?

Both technicians A and B

Technician A sags that snap-rings are used to hold many components of a manual transmission/transaxle. Technician B says that snap rings have a "right side" that should always face up so the snap-ring pliers can be applied. Which technician is correct?

Both technicians A and B

Which component cannot be removed before removing the transmission/transaxle from the vehicle?

Front bearing retainer (quill)

Which type of lubrication is usually not used in a Manuel transmission/transaxle?

High-temperature chassis grease

The driving gear has 15 teeth and the driven gear has 29 teeth. Technician A says that the output gear will be going faster than the input gear. Technician B says the ratio is 3.86:1. Which technician is correct?

Neither technician A nor B

When you have external gears and internal gears they move?

Opposite of each other

External teeth

Outside circumfrance

What parts are in a synchronizer assembly?

Ring grooves, synchronizer ring, clutch hub, key springs, speed gear

Main parts of a Manuel transmission

Shift cover assembly, shift lever, front bearing retainer, input shaft, transmission case, counter shaft, output shaft, extension housing

Technician A says that the torque available at the output shaft is greater in second gear than when the transmission/transaxle is in third gear at the same engine speed. Technician B says that the output shaft is rotating faster when the transmission/transaxle is in second gear compared to third gear when the engine is at the same speed. Which technician is correct?

Technician A only

Two technicians are discussing how torque is increased inside a Manuel transmission/transaxle. Technician A says that the gear ratio in first gear between the main shaft and the countershaft should be multiplied by the ratio of the corresponding countershaft gear and output shaft gear. Technician B says that the two ratios should be added together? Which technician is correct?

Technician A only

A Manuel transmission is difficult to shift but only when the outside temperature is below freezing (32°F or 0°C). Technician A says that the brass blocking ring could be defective. Technician B says that incorrect gear lubrication could be the cause. Which technician is correct?

Technician B only

How are helical cut gears cut and how are the teeth

The gears are cut at an angle and sit at an angle of the axis of the gear

Distance between the center of the input shaft and the center of the countershaft?

The greater the distance, the larger the transmission and the more torque it is capable of handling due to large gears

When the transmission is in over drive is the output shaft spinning faster?

Yes