SWING SYSTEM TMS700E SERVICE MANUAL
6-2 Published 01-29-2015, Control # 512-01
Swing Brake
Hydraulic power for the swing brake control and swing brake
cooling is supplied by the pilot generator capsule in the hoist/
telescope/lift directional control valve to the swing brake and
armrest lockout manifold, swing power brake valve, and
through an orifice to the cooling IN port on the swing brake.
The hydraulic power for the swing brake release is supplied
by the pressure reducing/sequence valve in the swing brake
and armrest lockout manifold. With the Swing Brake selector
switch positioned to ON, the swing brake release valve
blocks the regulated flow to the brake release port and spring
pressure in the swing brake applies the brake. When the
Swing Brake selector switch is positioned to OFF, the
regulated flow is directed from the pressure reducing/
sequence valve to the brake release port, overcoming the
brake spring pressure and releasing the swing brake.
Hydraulic flow from the pilot generator capsule is provided to
the swing power brake valve where it is available for the
activation of the swing brake when the pedal is depressed.
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