Hydrostatic Drives Vocabulary

Question 1

By-pass valve

Answer 1

Used in filters, open when pressure becomes too high due to clogged filter

Question 2

Charge pump

Answer 2

Fixed displacement pump, replenishes fluid that leaves the pump due to case drainage

Question 3

Combination valve

Answer 3

Pressure relief valves and check valves in one housing

Question 4

Crossover relief valves

Answer 4

Relieve high pressure on one side of the loop if pressure gets too high

Question 5

Flushing valves

Answer 5

Valve on the motor, allows a small amount of fluid out of the system for cleaning

Question 6

Hydrostatic transmission

Answer 6

Pump and motor are combined into one housing

Question 7

Servo pistons

Answer 7

Pistons used to hydraulically adjust awash plate angle

Question 8

Servo control valves

Answer 8

Valves that are electronically controlled by the operator and in turn control a pump servo piston