Exam 15: Hydraulic System Rebuilding

What must you ensure before air checking an automatic transmission clutch assembly?

What should the clutch drum should be checked for?

Viton seals require a surface that will retain oil in order to increase the life of the seal. This is achieved by:

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?

Tech A states that servo bores must be perfectly smooth to prevent damaging the seals. Tech B states that the servo bore will need to be scuffed if the servo uses a Viton seal. Who is correct?

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?

Which of these is least likely to cause slippage in a multi-disc drum?

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

What is used to measure the amount of warpage on the automatic transmission drum?

Tech A states that pump gears must be reinstalled in the same direction when rebuilding a pump. Tech B says that pump vanes must be installed in the same direction as they were removed. Who is correct?

Which of the following is the best method for inspecting the valves in a pump?

Which of the following automatic transmission tests can check hydraulic circuits and components, such as clutches and servos, for leaks and proper movement?

Because most automatic transmissions have multiple clutches, it is good practice to rebuild _____, so that parts do not get interchanged.

Which of these should be used to identify fluid passages through the case when inspecting fluid delivery circuits?

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 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?

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?

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?

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

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.