Question 1

Technician A says that the 948TE transmission has four overdrive gears. Technician B says that the first gear is very low to allow the transmission to be used with low displacement vehicles. Who is correct?

Accepted Answer

The 948TE transmission does have four overdrive gears, and its first gear is designed to be low to accommodate low displacement vehicles.

Question 2

Technician A says that dog clutches are being used as they take up very little space. Technician B says that dog clutches are being used as they reduce parasitic losses because there are no clutch plates to drag when the clutch is off. Who is correct?

Accepted Answer

Dog clutches are compact, taking up little space, and they reduce parasitic losses since they do not have clutch plates that drag when disengaged.

Question 3

Dog clutches are monitored by the TCM through a:

Accepted Answer

The TCM (Transmission Control Module) monitors dog clutches using a pressure transducer to measure hydraulic pressure and ensure proper clutch engagement.

Question 4

Technician A says that the 948TE transmission uses nine or ten solenoids to operate. Technician B says that the limp-home solenoid (or the tenth solenoid) must be engaged for the transmission to operate. Who is correct?

Accepted Answer

The 948TE transmission uses nine solenoids for normal operation, and a tenth solenoid for limp-home mode.

Question 5

The 4.7:1 gear ratio in the first gear allows the transmission to be used effectively in vehicles that have:

Accepted Answer

A 4.7:1 gear ratio in the first gear is typically used to provide more torque to the wheels, which is beneficial for vehicles with small displacement engines that need assistance in generating sufficient power for acceleration.

Question 6

Which gear is the transmission's 1:1 ratio?

Accepted Answer

The answer of Which gear is the transmission's 1:1 ratio?
...

Question 7

All of the following statements with respect to dog clutches are true except:

Accepted Answer

Dog clutches are not friction clutches; they engage and disengage gears through interlocking teeth, unlike traditional friction clutches.

Question 8

Choose the correct statement with respect to dog clutches.

Accepted Answer

They can only be engaged or disengaged when the transmission is in neutral.

Question 9

To reduce the overall length of the transmission, the four sets of planetary gears:

Accepted Answer

The four sets of planetary gears are nested to reduce the overall length of the transmission, allowing them to fit within a compact space.

Question 10

In fail-safe mode, the transmission will default to operation is which gear only?

Accepted Answer

In fail-safe mode, the transmission will default to operation in fourth gear only. This is because fourth gear is the most efficient gear for most driving conditions, and it provides the best balance of fuel economy and performance.

Question 11

Tech A states that in the 948TE transmission, dog clutches are used to engage all gears inside the transmission. Tech B states that dog clutches are used to save space inside the transmission. Who is correct?

Accepted Answer

The answer of Tech A states that in the 948TE...

Question 12

Tech A states that taking multiple pictures during disassembly of a transmission will help ease the reassembly. Tech B states that taking pictures during disassembly only delays the service. Who is correct?

Accepted Answer

Taking multiple pictures during disassembly can serve as a useful reference during reassembly, helping to ensure that parts are returned to their correct positions and orientations.

Question 13

A 948TE transmission is to be disassembled. Tech A states that the transmission pan bolts and pan can be removed easily by pulling on them. Tech B states that the metal clip that holds the transmission pass-through connector into the transmission pan should be removed first before removing the pan bolts and the pan. Who is correct?

Accepted Answer

Tech B is correct because the metal clip holding the transmission pass-through connector should be removed first to avoid damaging the connector or pan when removing the transmission pan bolts and the pan.

Question 14

Tech A states that during a downshift the transmission must skip certain gears. Tech B says that the transmission will downshift two gears each time it downshifts. Who is correct?

Accepted Answer

Tech A is correct because during a downshift, the transmission must skip certain gears to avoid over-revving the engine.

Question 15

Tech A states that on the 948TE transmission a pressure transducer monitors the input clutch for proper operation. Tech B states that the pressure transducer is used to monitor the dog clutches. Who is correct?

Accepted Answer

The answer of Tech A states that on the 948TE...

Question 16

During the disassembly of a 948TE transmission, a(n) ________ can be used to remove the transfer gear bearing from the transmission case.

Accepted Answer

A bearing puller is a tool specifically designed to remove bearings from shafts or housings, making it the appropriate choice for removing the transfer gear bearing from the transmission case.

Question 17

A slide hammer along with a ________ should be used to help remove the D-clutch piston from the transmission case of a 948TE transmission.

Accepted Answer

A slide hammer along with a hook adapter is used to remove the D-clutch piston from the transmission case of a 948TE transmission.

Question 18

Tech A says that the 948TE transmission is start/stop capable with no additional parts. Tech B states that the transmission needs an additional electric pump to be start stop capable. Who is correct?

Accepted Answer

The 948TE transmission is designed to be start/stop capable without the need for additional parts like an electric pump.

Question 19

Tech A states that the 948TE transmission will default to 5th gear in the event of a failure. Tech B states that the transmission does not have a fail-safe gear. Who is correct?

Accepted Answer

The answer of Tech A states that the 948TE transmission...

Question 20

Technician A says that the two halves of the 948TE transmission can be separated after removing all the bolts from the bellhousing. Technician B says that the first component removed after separating the case halves (after removing the metal gasket) is the differential. Who is correct?

Accepted Answer

The answer of Technician A says that the two halves...

Quiz 26: Zf 9hp Chrysler 948te Transmission