tracked front-end loaders and other equipment
containing hydraulic systems that are subjected to
severe shock.
The accumulator is a large cylinder that contains
compressed gas or a coil spring separated from the
hydraulic fluid by a piston, rubber bladder, or
diaphragm. When a heavy shock is placed on the
hydraulic system, fluid enters the cylinder and causes
the gas or spring to compress. Once the shock load
stabilizes within the hydraulic system, the fluid is forced
back to the operating portion of the system.
HYDRAULIC MOTORS
The hydraulic motor provides power to winches on
cranes, drives conveyors on ditching machines, and is
used in other applications where mechanical drives are
impractical.
The hydraulic motor is turned by fluid under
pressure supplied by the pump. The fluid enters the
housing and acts on the rotating members. It then
discharges and returns to the reservoir or pump.
4-12