Section 1
1 - 13
Control Manifold on Installations without DRAG-
BRAKE
(See Fig. 1-17)
The control manifold contains the brake valve, two solenoid
valves and a shuttle valve to direct pilot pressure to release
the
BRAKE
and control hydraulic motor displacement.
The shuttle is used to send pilot pressure during either
LINE-IN
or
LINE-OUT
to the brake valve. When control
pressure rises to the brake release pressure setting, the
brake valve sends pilot pressure to release the brake.
The solenoids receive electrical signals from switches on
the operator console. The solenoids valves release pilot
pressure from the dozer to actuate the
FREESPOOL
function, or
HI-SPEED
.
Solenoid Valves
Brake Valve
Port RI
Port PP
Port 2
Port PD
Port RO
Port RI
Port RO
Port BR
Port DV
Port HS
Port X1
Port FS
Figure 1-18 Control Manifold (Installations with DRAG-BRAKE)
Control Manifold on Installations with DRAG-BRAKE
(See Fig. 1-18)
The control manifold contains the brake valve, three
solenoid valves and a shuttle valve to direct pilot pressure
to release the parking brake, engage
FREESPOOL
or
DRAG-BRAKE
, and control hydraulic motor displacement.
The shuttle is used to send pilot pressure during either
LINE-IN
or
LINE-OUT
to the brake valve. When control
pressure rises to the brake release pressure setting, the
brake valve sends pilot pressure to release the brake.
The solenoids receive electrical signals from switches on
the operator console. The solenoids valves release pilot
pressure from the dozer to actuate the
FREESPOOL
function,
DRAG-BRAKE
, or
HI-SPEED
.
Summary of Contents for H5C Series
Page 8: ...vi Notes...
Page 48: ...General 1 40 Notes...
Page 59: ...Troubleshooting 2 6 Notes...
Page 77: ...Service 3 18 Notes...
Page 86: ...Section 4 4 9 Intentionally Blank...
Page 104: ...Section 4 4 27 Intentionally Blank...
Page 108: ......
