Question 1

Technician A says the differential case is located between the side gears. Technician B says the differential case is mounted on bearings so that it is able to rotate independently of the drive axles. Who is correct?

Accepted Answer

Technician A is correct in stating that the differential case is located between the side gears, while Technician B is correct in saying that the differential case is mounted on bearings enabling it to rotate independently of the drive axles. Therefore, both technicians are correct.

Question 2

Explain how reverse gear is obtained in a planetary gear set.

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Question 3

Describe the purpose of bearings fitted to a shaft or gear.

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Question 4

Explain the advantages of a Ravigneaux gear train over a Simpson gear train.

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Question 5

The _______________ geartrain is an arrangement of two separate planetary gearsets with a common sun gear, two ring gears, and two planetary pinion carriers.

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Question 6

Describe the result of a small gear driving a large gear.

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Question 7

Describe two ways gear reduction is accomplished in a planetary gear set.

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Question 8

The ____________________ is the outer gear of a planetary gear set.

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Question 9

The following components are located in the hybrid transaxle assembly, the ____________________ assembly, a(n) ____________________ unit, the two ____________________, a(n) ____________________, and a(n) ____________________.

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Question 10

Define the result of a large gear driving a smaller gear.

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Question 11

Describe what produces overdrive in a planetary gear set.

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Question 12

Define a differential and its purpose.

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Question 13

Technician A says Technician A says the Simpson geartrain is an arrangement of a common planetary gearset with two sun gears, two ring gears, and two planetary pinion carriers. Technician B says a Simpson geartrain is the most commonly used compound planetary gearset to provide five reduction gears. Who is correct?

Accepted Answer

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Question 14

Technician A says that the Lepelletier gear set design limits the number of gear ratios; therefore, this type of transmission is limited to four forward speeds. Technician B says that this gear set design makes the transmission heavier and more bulky than the other designs. Who is correct?

Accepted Answer

The Lepelletier gear set design does not inherently limit a transmission to only four forward speeds; transmissions using this design can have six or more speeds. Additionally, this design can make transmissions more compact and efficient, not necessarily heavier and bulkier.

Question 15

____________________ is another name for a ring gear.

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Question 16

The ____________________ rotates between the ring and sun gear.

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Question 17

The ____________________ holds or drives members of the planetary gear set.

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Question 18

List the reasons that a transmission housing/case will need to be replaced.

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Question 19

Describe the neutral position of a planetary gear set.

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Question 20

While discussing the transmission housing and/or case, Technician A says when removing parts from inside the case, pay close attention to the location of the check balls that may be in the hydraulic system. Technician B says that the case passages can be checked using high-pressure compressed air to determine leaks and cracks. Who is correct?

Accepted Answer

Technician A is correct. It is important to pay close attention to the location of check balls while removing parts from inside the case. Technician B's statement is incorrect as using high-pressure compressed air can actually cause damage to the case passages. Instead, vacuum or low-pressure air should be used to check for leaks and cracks.

Quiz 8: Gears and Shafts