Exam 15: Hydraulic System Rebuilding

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

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

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

If the end play on a transmission is insufficient, there will be preload on the bearings inside the transmission. What problem may this cause?

Tech A states that there is no difference between an electric transmission pump and a gerotor pump. Tech B states that the electric pump is often used on high voltage hybrid vehicles that require special service techniques. Who is correct?

Which of the following can be worn by metal check balls?

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?

When the clutch pack has excessive clearance, what can happen?

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?

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

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

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?

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?

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.

All of the following tools are used in the inspection of a gerotor pump except:

Technician A says that when rebuilding a multidisc clutch, the steels should be checked for flatness, and their thickness should be measured. Technician B says that it is common to reuse the clutch piston's lip seals. Who is correct?

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

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?

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?

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?