Question 1

Tech A states that the 9HP48 transmission is the only current automatic transmission using two dog clutches. Tech B states that the 62TE transmission also uses two dog clutches. Who is correct?

Accepted Answer

The 9HP48 transmission is known for using two dog clutches, while the 62TE transmission does not use dog clutches.

Question 2

Identify the gear ratios of a 948TE transmission.

Accepted Answer

The 948TE transmission is a nine-speed automatic transmission, which means it has nine forward gear ratios and one reverse gear.

Question 3

Identify the gear ratio of the first gear of a 948TE transmission.

Accepted Answer

The 948TE transmission has a first gear ratio of 4.7:1, which provides high torque for initial acceleration.

Question 4

Identify the gear of a 948TE transmission that uses a gear ratio of 2.84:1.

Accepted Answer

The answer of Identify the gear of a 948TE transmission...

Question 5

Tech A states that the third gear of a 948TE transmission has a gear ratio of 0.8:1. Tech B states that the third gear uses a ratio of 1.9:1. Who is correct?

Accepted Answer

The 948TE transmission's third gear typically has a gear ratio of 1.9:1, making Tech B correct.

Question 6

Identify an overdrive gear of the 948TE transmission.

Accepted Answer

The seventh gear in the 948TE transmission is an overdrive gear, designed to reduce engine RPM at higher speeds for better fuel efficiency.

Question 7

Tech A states that the sixth and eighth gears of a 948TE transmission are overdrive gears. Tech B states that the ninth gear is an overdrive gear as well. Who is correct?

Accepted Answer

The 948TE transmission has multiple overdrive gears, including the sixth, eighth, and ninth gears. Both Tech A and Tech B are correct in stating that these gears are overdrive gears.

Question 8

Which gear of the 948TE transmission has a very high overdrive ratio of 0.47:1?

Accepted Answer

The ninth gear of the 948TE transmission has a very high overdrive ratio of 0.47:1, which is designed to improve fuel efficiency at high speeds.

Question 9

Dog clutches are applied and released ________.

Accepted Answer

Dog clutches are typically applied and released hydraulically, as this method allows for precise control and smooth operation.

Question 10

Identify the component of a 948TE transmission shown in the given figure.

Accepted Answer

The answer of Identify the component of a 948TE transmission...

Question 11

Identify the component of a 948TE transmission shown in the given figure.

Accepted Answer

The answer of Identify the component of a 948TE transmission...

Question 12

Identify the component of a 948TE transmission shown in the given figure.

Accepted Answer

The answer of Identify the component of a 948TE transmission...

Question 13

When rebuilding the input shaft, how much force should be applied to the clutch piston when measuring clutch pack clearance?

Accepted Answer

The answer of When rebuilding the input shaft, how much...

Question 14

Using a feeler gauge, check the C-clutch pack. If the clearance is not correct:

Accepted Answer

If the clearance is not correct, changing the pressure plate to a different thickness can adjust the clearance to the correct specification.

Question 15

When rebuilding the E-clutch assembly, clutch pack clearance is measured using a(n):

Accepted Answer

A dial indicator is used to measure clutch pack clearance because it provides a precise and accurate measurement.

Question 16

The D-clutch piston can be removed from the transmission case using a(n):

Accepted Answer

A slide hammer and hook adapter are typically used to remove components like the D-clutch piston from a transmission case, as they allow for controlled pulling force.

Question 17

A vehicle with a 9HP transmission comes in to the shop with the customer complaining about the transmission slipping. You test drive the vehicle and confirm the transmission is slipping and also has codes for 2nd, 6th, and 8th gear. Tech A states that the dog clutches could have failed. Tech B states that the c-clutch could have failed. Who is correct?

Accepted Answer

The answer of A vehicle with a 9HP transmission comes...

Question 18

A vehicle with a 9HP transmission is towed to the shop. The vehicle will not move. Tech A states that the limp home solenoid may have failed. Tech B states that the pump may have failed and locked up. Who is correct?

Accepted Answer

Both Tech A and Tech B could be correct as a failure in the limp home solenoid or a locked-up pump could cause the vehicle not to move.

Question 19

Tech A states that the dog clutches can only be applied when power is flowing through the transmission. Tech B states that the dog clutch components must match the speed of each other before engaging. Who is correct?

Accepted Answer

Dog clutches require the components to match speeds before engaging to prevent damage and ensure smooth operation.

Question 20

A vehicle with a 9HP transmission comes in to the shop. The customer complains that the vehicle drives fine around town, but when they attempt to go on the highway the vehicle will not shift and turns on the MIL. You confirm the problem and find slip codes for 4th and 5th gear. Tech A states that clutch "E" could have failed. Tech B states that clutch "B" could have failed. Who is correct?

Accepted Answer

Clutch "E" is responsible for engaging higher gears such as 4th and 5th in a 9HP transmission, so its failure could cause the symptoms described.

Quiz 26: Zf 9hp Chrysler 948te Transmission

Tech A states that the 9HP48 transmission is the only current automatic transmission using two dog clutches. Tech B states that the 62TE transmission also uses two dog clutches. Who is correct?

Identify the gear ratios of a 948TE transmission.

Identify the gear ratio of the first gear of a 948TE transmission.

Identify the gear of a 948TE transmission that uses a gear ratio of 2.84:1.

Tech A states that the third gear of a 948TE transmission has a gear ratio of 0.8:1. Tech B states that the third gear uses a ratio of 1.9:1. Who is correct?

Identify an overdrive gear of the 948TE transmission.

Tech A states that the sixth and eighth gears of a 948TE transmission are overdrive gears. Tech B states that the ninth gear is an overdrive gear as well. Who is correct?

Which gear of the 948TE transmission has a very high overdrive ratio of 0.47:1?

Dog clutches are applied and released ________.

Identify the component of a 948TE transmission shown in the given figure.

Identify the component of a 948TE transmission shown in the given figure.

Identify the component of a 948TE transmission shown in the given figure.

When rebuilding the input shaft, how much force should be applied to the clutch piston when measuring clutch pack clearance?

Using a feeler gauge, check the C-clutch pack. If the clearance is not correct:

When rebuilding the E-clutch assembly, clutch pack clearance is measured using a(n) :

The D-clutch piston can be removed from the transmission case using a(n) :

A vehicle with a 9HP transmission is towed to the shop. The vehicle will not move. Tech A states that the limp home solenoid may have failed. Tech B states that the pump may have failed and locked up. Who is correct?

Tech A states that the dog clutches can only be applied when power is flowing through the transmission. Tech B states that the dog clutch components must match the speed of each other before engaging. Who is correct?