Chapter 4.2

Multiple Choice

Vane pumps are what type of pumps?

• Fixed displacement.

• Variable displacement.

• Both A and B.

• Neither A nor B.

Multiple Choice

Technician A states that most fixed-displacement vane pumps are balanced. Technician B states that balanced vane pumps have two cam lobes. Who is correct?

• Technician A.

• Technician B.

• Both A and B.

• Neither A nor B.

Multiple Choice

What do vane pumps sometimes contain in order to speed the process of rebuilding the pump?

• Port plate.

• Side plate.

• Cam ring.

• Cartridge.

Multiple Choice

Which of the following is the most popular type of piston pump found in mobile equipment?

• Rotating-cam radial piston pump.

• Rotating-piston radial piston pump.

• Inline axial piston pump.

• Bent-axis piston pump.

Multiple Choice

Which of the following styles of pumps uses a swash plate?

• Rotating-cam radial piston pump.

• Rotating-piston radial piston pump.

• Inline axial piston pump.

• Bent-axis piston pump.

Multiple Choice

1.      Which of the following plates is commonly coated in bronze, pinned to the barrel, and rotates at pump rpm?

• Side plate.

• Port plate.

• Valve plate.

• Bearing plate.

Multiple Choice

All of the following components are part of the rotating group, EXCEPT:

• barrel.

• piston and slipper assembly.

• valve plate.

• bearing plate.

Multiple Choice

Which component within a bent-axis piston pump is actuated in order to vary the pump’s displacement?

• Swash plate.

• Valve plate.

• Slipper retaining ring.

• Bearing plate.

Multiple Choice

Bent-axis piston pumps are used in which application?

• Compact utility tractors.

• Excavators.

• Haul trucks.

• Skid steers.

Multiple Choice

Which of the following has a high volumetric efficiency?

• Gear pump.

• Vane pump.

• Piston pump.

• All pumps have equal volumetric efficiency.