Fiat Kobelco EX355 Tier2, Техническое руководство

Страница: 43 / 968

T2-2-6 EX355
HYDRAULIC SYSTEM
COMBINED OPERATION
Swing and Boom Raise Operation
When combined swing and boom raise operation is
performed, pilot pressure shifts the swing, boom 1,
and boom 2 spools in the control valve.
Then, pressure oil from pump 1 flows from boom 1
spool via the parallel passage into the boom cylinder
to raise the boom. Pressure oil from pump 2 flows
from swing spool into the swing motor to swing the upperstructure. At the same time, pressure oil flows
from boom 2 spool via the parallel passage into the
boom cylinder, and joins pressure oil from pump 1 to
raise the boom.