Question 1

Preload refers to the amount of:

Accepted Answer

Preload is the force applied to a bearing to remove any internal clearance and ensure proper contact between the bearing components before any external load is applied.

Question 2

A bearing will suffer from impact damage when there is:

Accepted Answer

Too much free play can cause impact damage as the bearing components can collide with each other due to the excessive movement.

Question 3

Tech A says that if the end play is insufficient, it may cause premature wear on the thrust bearings. Tech B says that transmissions with incorrect end play may have been reassembled incorrectly. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. Insufficient end play can indeed cause premature wear on thrust bearings, and incorrect end play can result from improper reassembly of the transmission.

Question 4

In gear-type power transfer, the power is transferred from transmission planetary gears to the differential through:

Accepted Answer

The answer of In gear-type power transfer, the power is...

Question 5

In most transfer gears and output gears of the gear type, removal of the gears from the shaft is done using a(n):

Accepted Answer

A bolts puller is typically used to remove gears from a shaft in gear systems, as it allows for the application of even pressure to safely extract the gear without causing damage.

Question 6

Tech A says that one crescent-type front pump measurement uses a feeler blade between the outer gear and pump body. Tech B says that a micrometer is used to measure the width of the crescent. Who is correct?

Accepted Answer

The answer of Tech A says that one crescent-type front...

Question 7

Tech A says that when rebuilding a multidisc clutch, the steels should be checked for flatness, and their thickness should be measured. Tech B says that it is common to reuse the clutch piston's lip seals. Who is correct?

Accepted Answer

Tech A is correct because checking the steels for flatness and measuring their thickness is essential to ensure proper clutch function. Reusing lip seals is not recommended as they can wear out and lead to leaks.

Question 8

Tech A says that clutch pack clearance should be checked with a micrometer. Tech B says that any clearance in the clutch pack means that the clutch discs are worn out. Who is correct?

Accepted Answer

Clutch pack clearance is typically checked with a feeler gauge, not a micrometer. Some clearance is normal and necessary for proper clutch operation, so it does not necessarily mean the clutch discs are worn out.

Question 9

Tech A says that after rebuilding a clutch, it needs to be air checked before the clutch plates are installed. Tech B says that clutches that are rebuilt outside of the transmission are typically air tested before installing them back in the transmission. Who is correct?

Accepted Answer

The answer of Tech A says that after rebuilding a...

Question 10

Discoloration of the planetary gears or the planet carrier can be a sign of:

Accepted Answer

The answer of Discoloration of the planetary gears or the...

Question 11

Choose the correct statement.

Accepted Answer

Planetary gear sets are known for their durability and typically do not require service during a transmission rebuild unless there is a specific issue.

Question 12

Use a feeler gauge to measure the amount of clearance on the planetary gears. If the clearance is not correct, install:

Accepted Answer

A feeler gauge is used to measure the clearance, and if the clearance is incorrect, a thrust washer of a different thickness can be used to adjust it to the correct specification.

Question 13

Bushings must be replaced when clearance exceeds:

Accepted Answer

Bushings typically need replacement when the clearance exceeds 0.003" (0.076 mm) as this indicates excessive wear that could affect performance.

Question 14

Tech A says that to determine whether roller-type thrust bearings need to be replaced, they should be measured with a micrometer. Tech B says that to determine whether thrust washers are worn excessively, they should be measured with a micrometer and compared to specifications. Who is correct?

Accepted Answer

Tech B is correct because measuring thrust washers with a micrometer and comparing them to specifications is a standard method to determine wear. Roller-type thrust bearings are typically assessed by visual inspection and checking for smooth operation rather than micrometer measurements.

Question 15

Tech A says that the torque converter should be bolted to the flexplate before installing the transmission. Tech B says that when installing the torque converter, three separate engagements with their mating parts must be felt. Who is correct?

Accepted Answer

Tech B is correct because when installing the torque converter, it must engage with the input shaft, stator support, and pump drive, which are the three separate engagements that should be felt. Tech A is incorrect because the torque converter should be installed onto the transmission first, and then the assembly is bolted to the flexplate.

Question 16

Tech A says that when inspecting the torque converter, you need to check the snout of the converter where the seal and bushing rides for excessive wear. Tech B says that the end play of the converter must be checked. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. Checking the snout for wear and the end play of the converter are both important steps in inspecting a torque converter.

Question 17

Tech A says that when assembling a transmission, the components should be lubricated with the correct automatic transmission fluid or transmission assembly lube. Tech B says that the transmission end play needs to be measured after the front pump is installed. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. Proper lubrication is essential for transmission assembly to ensure smooth operation and prevent wear. Measuring transmission end play after installing the front pump is a necessary step to ensure proper alignment and function.

Question 18

All of the following statements are true with respect to sprag clutch inspection except:

Accepted Answer

Sprag clutches have a specific direction of assembly to ensure proper functioning, so they cannot be assembled in any direction.

Question 19

Tech A says that a one-way roller clutch will work fine if assembled in either direction. Tech B says that sprag clutches must be serviced as a complete unit if any damage is found. Who is correct?

Accepted Answer

Tech B is correct because sprag clutches are typically serviced as a complete unit if any damage is found. Tech A is incorrect because a one-way roller clutch must be assembled in the correct direction to function properly.

Question 20

All of the following statements with respect to the inspection of mechanical diodes are true except:

Accepted Answer

The end of the struts will not become smoother as they wear; instead, they may show signs of wear such as roughness or deformation.

Quiz 16: Gear Train Rebuilding