Question 1

If the end play on a transmission is insufficient, there will be preload on the bearings inside the transmission. What problem may this cause?

Accepted Answer

Insufficient end play can cause excessive preload on the bearings, leading to increased friction and potential dragging of the clutch packs within the transmission.

Question 2

Which of the following can be worn by metal check balls?

Accepted Answer

Metal check balls can wear both the valve body and the separator plate due to repeated contact and movement.

Question 3

Where should compressed air should be used to ensure each fluid passage is clear and unobstructed?

Accepted Answer

Compressed air should be used in all these components to ensure that each fluid passage is clear and unobstructed, as they all have fluid passages that need to be free of debris for proper operation.

Question 4

Technician A says all components of the oil delivery circuit in an automatic transmission must be inspected for debris during a transmission rebuild. Technician B says that this is not necessary since all debris would be captured by the transmission filter. Who is correct?

Accepted Answer

During a transmission rebuild, it is essential to inspect all components of the oil delivery circuit for debris, as not all debris may be captured by the transmission filter. Debris can cause damage or blockages, affecting the transmission's performance.

Question 5

What is used to measure the amount of warpage on the automatic transmission drum?

Accepted Answer

A straight edge and feeler gauges are used to measure warpage by checking for gaps between the straight edge and the surface of the drum.

Question 6

Which of the following can cause discoloration of a band drum?

Accepted Answer

Band slippage can cause discoloration due to excessive heat and friction, leading to wear and potential burning of the band material.

Question 7

Because most automatic transmissions have multiple clutches, it is good practice to rebuild _____, so that parts do not get interchanged.

Accepted Answer

Rebuilding only one clutch at a time helps prevent parts from getting mixed up or interchanged, ensuring that each clutch is reassembled correctly.

Question 8

What should the clutch drum should be checked for?

Accepted Answer

The clutch drum should be checked for cracks, broken splines, and worn splines to ensure it is in good condition and functioning properly.

Question 9

Which of these is least likely to cause slippage in a multi-disc drum?

Accepted Answer

High line pressure is least likely to cause slippage; it typically increases the force applied to the clutch pack, reducing the chance of slippage.

Question 10

If clutch pack clearance is insufficient, what can happen?

Accepted Answer

The answer of If clutch pack clearance is insufficient, what...

Question 11

When the clutch pack has excessive clearance, what can happen?

Accepted Answer

Excessive clearance in the clutch pack can lead to slipping when the clutch is applied, as the plates may not engage properly.

Question 12

Technician A says when rebuilding an automatic transmission, there should be no clearance between the clutch plates. Technician B says when rebuilding an automatic transmission, the clutch pack clearance is best checked with a feeler gauge. Who is correct?

Accepted Answer

Technician B is correct because clutch pack clearance is an important specification that should be checked with a feeler gauge to ensure proper operation of the transmission. Technician A is incorrect because there should be a specified clearance between the clutch plates to allow for proper engagement and disengagement.

Question 13

Which of the following automatic transmission tests can check hydraulic circuits and components, such as clutches and servos, for leaks and proper movement?

Accepted Answer

The air check test is used to check the hydraulic circuits and components like clutches and servos for leaks and proper movement by applying air pressure to the hydraulic passages.

Question 14

Which of the following parts can be tested for proper function using compressed air?

Accepted Answer

Compressed air can be used to test the function of servos and clutches by simulating hydraulic pressure to check their operation.

Question 15

What must you ensure before air checking an automatic transmission clutch assembly?

Accepted Answer

Before air checking an automatic transmission clutch assembly, you must ensure that the clutch pack is assembled and the snap ring is fully engaged to properly test the clutch's operation.

Question 16

Which of these should be used to identify fluid passages through the case when inspecting fluid delivery circuits?

Accepted Answer

The answer of Which of these should be used to...

Question 17

A drum that is not badly scored (lightly worn) should:

Accepted Answer

The answer of A drum that is not badly scored...

Question 18

If the clutch pack has too little clearance, the clutch:

Accepted Answer

Too little clearance in the clutch pack can cause the clutch to drag when it is disengaged, as the plates may not fully separate.

Question 19

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

Accepted Answer

Technician A is correct because checking the steels for flatness and measuring their thickness is a standard procedure when rebuilding a multidisc clutch to ensure proper function. Technician B is incorrect because it is not common practice to reuse the clutch piston's lip seals; they should typically be replaced to ensure a proper seal and prevent leaks.

Question 20

Technician A says that clutch pack clearance should be checked with a micrometer. Technician 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 feeler gauges, 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.

Quiz 15: Hydraulic System Rebuilding