Deck 9: Reaction and Friction Units

Question 1

Technician A says an internal leak at the servo is indicated if the fluid pressure increases during servo application. Technician B says a clogged oil filter or low oil pump output is indicated by high fluid pressure. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 1

D

Question 2

Some reaction units are applied by hydraulically operated piston assembly.

Answer 2

True

Question 3

Technician A says transmissions use compound planetary gears that are controlled by friction and reaction devices. Technician B says clutch and brake application charts are a must during diagnosis and transmission overhaul. Who is correct?

A) ​A only
B) ​B only
C) ​Both A and B
D) ​Neither A nor B

Answer 3

C

Question 4

A servo is a hydraulically operated piston assembly used to apply a band.

Question 5

Shift feel is affected by fluid type.

Question 6

Technician A says seals hold in the hydraulic pressure when the clutch pack is released. Technician B says in a typical pack, the apply piston at the rear of the drum is held in place by the return springs and a spring retainer secured by a snap ring. Who is correct?

A) ​A only
B) ​B only
C) ​Both A and B
D) ​Neither A nor B

Question 7

Technician A says if a friction disc looks burned but there is sufficient friction material remaining, it can be serviced. Technician B says if the steel plates in a clutch disc assembly are worn flat, they should be replaced. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 8

Technician A says a band apply pin may be selective. Technician B says most bands are not adjustable as routine maintenance. Who is correct?

A) ​A only
B) ​B only
C) ​Both A and B
D) ​Neither A nor B

Question 9

A servo expands a band when hydraulic pressure pushes against the piston.

Question 10

A drum is connected to a member of the planetary gear set.

Question 11

Technician A says a dog clutch utilizes roller bearings held in place by springs to separate the inner and outer race of the clutch assembly. Technician B says one-way overrunning clutches can be either roller type or sprag type. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 12

The forward clutch normally contains a Belleville-type return spring.

Question 13

Some apply circuits use an accumulator to slow down the application of the holding device.

Question 14

Technician A says to check for internal fluid leaks, a technician can perform an air test. Technician B says servo action can be checked by performing an air test. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 15

One-way overrunning clutches are purely mechanical devices.

Question 16

Shift feel is affected by power pulses.

Question 17

A band can be used to drive a planetary member.

Question 18

Technician A says to drive one member of the planetary gear set, a multiple disc clutch can be used. Technician B says to hold one member of the planetary gear set, a multiple disc clutch can be used. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 19

Technician A says a hydraulic piston assembly known as an accumulator helps the servo quickly apply the brake band. Technician B says to apply the brake band, a hydraulically operated piston assembly known as a servo is used. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 20

Technician A says the dog clutch is used on the nine- speed automatic from ZF. Technician B says the dog clutch is used to lock two components together through the use of a multiple- disc clutch.Who is correct?

A) ​A only
B) ​B only
C) ​Both A and B
D) ​Neither A nor B

Question 21

A(n) ____________________ is a band that is split with overlapping ends.

Question 22

What determines shift feel in a clutch-to-clutch shifting transmission?

Question 23

List the advantages to using a dog clutch.

Question 24

____________________ is part of an adaptive learning strategy that is an important aid when diagnosing a slippage problem. This data can also be used as an indication of the amount of friction material wear.

Question 25

____________________ are smooth metal rings that do not have friction material on them.

Question 26

A(n) ____________________ provides strong holding power and has band segments.

Question 27

When a multiple-disc pack is used as a _______________, there is no need for the check ball.  Since the unit does not rotate, centrifugal force will have no effect on the fluid behind the piston.

Question 28

What is CVI (clutch volume indexing)?

Question 29

List the  disadvantages to using a dog clutch.​

Question 30

A(n) ____________________ improves clamping force and acts as a return spring.

Question 31

Name the different types of bands.

Question 32

A _______________ and its _______________ are always used as holding devices and are never used to drive a member of the gearset.

Question 33

A(n) ____________________ is a heavy metal plate that provides a clamping surface for the clutch plates.

Question 34

Technician A says adjusting screws are found on some bands. Technician B says locknuts and adjusting screws are found on the outside of the transmission case on all bands. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 35

____________________ is an operational condition that results from using the engine to brake while decelerating.

Question 36

____________________ is a linkage that acts on both ends of a band to tighten it around the drum.

Question 37

Technician A says that the springs used in accumulator and servo assemblies have a specified tension. Technician B says that improper spring tension will affect shift quality. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 38

When multiple-disc packs lock two members of a planetary gearset together, it is a _______________device.

Question 39

Define a servo assembly and its function.

Question 40

A(n) ____________________ is the pivot point for lever.