Question 1

Tech A states that check valves can be pressure tested with a blow gun. Tech B states that a check valve can be checked with solvent to see if it is leaking. Who is correct?

Accepted Answer

The answer of Tech A states that check valves can...

Question 2

Tech A states that the transmission can function without the front pump. Tech B states that without the front pump, the transmission cannot function. Who is correct?

Accepted Answer

The front pump is essential for the transmission to function as it circulates transmission fluid, which is necessary for the transmission's operation.

Question 3

Tech A states that front pump of a transmission needs to be disassembled and checked for wear separately. Tech B states that a severely worn pump will need replacement or needs to be rebuilt for the transmission. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. The front pump of a transmission should be disassembled and checked for wear separately, as Tech A states. If the pump is severely worn, it will need to be replaced or rebuilt, as Tech B states.

Question 4

Tech A states that a gear and crescent pump needs little service when rebuilding a transmission. Tech B states that a gear and crescent pump is prone to heavy wear and needs replacement when a rebuilding a transmission. Who is correct?

Accepted Answer

Tech A is correct because a gear and crescent pump is a type of positive displacement pump that is known for its reliability and low maintenance requirements.

Question 5

Identify the component that is removed first to disassemble a typical gear pump.

Accepted Answer

Sealing rings are typically removed first to access and disassemble the internal components of a gear pump.

Question 6

The sealing rings of a typical gear pump can be made out of ________.

Accepted Answer

Teflon is commonly used for sealing rings in gear pumps due to its excellent chemical resistance and low friction properties.

Question 7

Tech A states that all sealing rings use the same design. Tech B states that sealing rings can use several different designs. Who is correct?

Accepted Answer

Sealing rings can indeed use several different designs depending on their application, material, and the specific requirements of the system they are used in.

Question 8

A gear pump that requires disassembly makes use of cast iron locking rings. Tech A states that the ring ends must be unlocked from each other. Tech B states that the ring must be expanded before it can be slid off of the pump. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. The cast iron locking rings need to be unlocked from each other and expanded to be removed from the pump.

Question 9

Identify the component that is being removed in the given figure.

Accepted Answer

The answer of Identify the component that is being removed...

Question 10

Tech A states that most front pumps will only go together one way. Tech B states that it may take several tries to line up the bolt holes of a front pump. Who is correct?

Accepted Answer

Most front pumps are designed to fit together in a specific orientation, supporting Tech A's statement. However, aligning bolt holes can sometimes be challenging, requiring multiple attempts, which supports Tech B's statement.

Question 11

Tech A states that inscribing a small line on the side of the halves of a front pump will make reassembly easier. Tech B states that inscribing on the sides of the front pump will score the component. Who is correct?

Accepted Answer

Inscribing a small line on the side of the halves of a front pump will make reassembly easier.

Question 12

Tech A states that the pump gears of a front pump should be marked during disassembly. Tech B states that seals must be replaced during pump rebuild. Who is correct?

Accepted Answer

Marking the pump gears during disassembly helps ensure they are reassembled in the correct orientation, and replacing seals during a pump rebuild is a standard practice to prevent leaks.

Question 13

Identify the tool that can be used to remove the front pump seal.

Accepted Answer

Seal puller is used to remove the front pump seal.

Question 14

Identify the step that should be carried out before driving out the front pump bushing.

Accepted Answer

Before driving out the front pump bushing, it is important to verify that there is no ridge located behind the bushing to ensure a smooth removal process without damaging the pump housing.

Question 15

Tech A states that the correct size bushing driver should be used to drive out a front pump bushing. Tech B states that all front pump bushings are of the same size and any bushing driver can be used to drive them out. Who is correct?

Accepted Answer

Tech A is correct because using the correct size bushing driver is essential to avoid damaging the bushing or the pump. Bushings can vary in size, so a specific driver is needed for each application.

Question 16

If the bushing driver used to drive out a front pump bushing is too large, it may ________.

Accepted Answer

The answer of If the bushing driver used to drive...

Question 17

Tech A states that if the bushing driver used to drive out a front pump bushing is too small, it may prevent the bushing from being removed. Tech B states that a small bushing driver will jam into the bushing. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. A bushing driver that is too small may not effectively remove the bushing and can also jam into the bushing, making removal difficult.

Question 18

A(n) ________ should be used to dry the parts of a front pump that have been cleaned in a solvent tank.

Accepted Answer

A blow gun is used to dry the parts of a front pump that have been cleaned in a solvent tank because it can quickly and effectively remove the solvent from the parts.

Question 19

The ________ of a pump are used to connect the rotating parts inside the transmission and allow the transfer of hydraulic pressure to the correct components.

Accepted Answer

Sealing rings are used to connect rotating parts and help transfer hydraulic pressure within a pump system.

Question 20

Tech A states that deep scores in the pump housing will cause a slight loss of hydraulic pressure. Tech B states that a deeply scored cast iron housing will require replacement. Who is correct?

Accepted Answer

Deep scores in the pump housing can indeed cause a loss of hydraulic pressure, as stated by Tech A. Additionally, a deeply scored cast iron housing typically requires replacement to restore proper function, as stated by Tech B.

Quiz 15: Hydraulic System Rebuilding