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Page Title:
TRAVERSING HYDRAULIC SUBSYSTEM. |
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 TM
9-2350-238-20-2
F-9.
TRAVERSING
HYDRAULIC
SUBSYSTEM.
Functional
Description.
direction
through
the
hydraulic
motor
(9),
a. The
hydraulic
fluid
power
for
the
which traverses the cab to the right.
operation
of
the
traversing
subsystem
is
supplied by the hydraulic power subsystem.
e. When
directional
control
valve
(2)
is
in
neutral
position,
hydraulic
fluid
flows
b. T h e t r a v e r s i n g h y d r a u l i c s u b s y s t e m
through
the
open
center
port
to
the
flow
controls the power for rotational movement
divider manifold
in
the
hydraulic
power
of the cab.
subsystem.
Depressing the forward portion of the
c.
f. W h e n t h e e n g i n e i s n o t o p e r a t i n g o r
foot pedal of the directional control valve
during hydraulic power failure, the travers-
(2), directs hydraulic fluid at 2050 psi
ing brake (7) can be manually released by
(14,135 kPa) through the solenoid valve (4)
setting the brake release valve (6) to HAND
to the brake release valve (6), releasing the
PUMP PRESSURE and operating the hand
brake (7), and to the hydraulic motor (9),
pump, so that the cab can be rotated.
which traverses the cab to the left. The
return flow from the hydraulic motor (9)
During tow winch operation, cab
passes through the solenoid valve (3) and
g.
traversing is controlled automatically by
an
the directional control valve (2) and back to
electrical sensing system. The sensing
the
reservoir.
system
energizes
either
the
solenoid
valve
d. Depressing the rear portion of the
(3) for right traversing, or the solenoid
valve (4) for left traversing. Hydraulic
foot pedal of the directional control valve
pressure at 1750 psi (12,066 kPa) is sup-
(2) has the same effect as when traversing
plied by the 8 gpm pump in the hydraulic
Ieft, described above, except that the
hydraulic fluid is routed in the opposite
power
subsystem.
F-18
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