TM 5-3810-307-24-1-1
THREE WAY AIR SOLENOID VALVE
SPRING BRAKE CONTROL VALVE
Removal
Description
1.
Chock the wheels.
The function of the spring brake control valve is to
supply a specific, limited hold-off pressure to the
2.
Deplete all pressure in both air systems.
spring brakes, and in the event of loss of service
pressure, to modulate the spring brakes through
3.
Identify, mark, and disconnect the air lines
the use of the dual brake valve.
from the three-way air solenoid valve.
The valve has four air connection ports and a
4.
Tag and disconnect the electrical leads to the
diaphragm protected exhaust port. Each air
solenoid.
connection port is labeled with embossed letters to
identify the ports.
5.
Remove the bolts, lockwashers, and nuts
securing the valve to the mounting bracket and
NOTE
remove the valve.
For proper internal drainage, the spring
6.
If a new valve is to be installed, remove the
brake control valve should be mounted
with the exhaust port down.
fittings.
Removal
Installation
1.
Chock the wheels.
1.
If a new valve is being installed, install fittings
in the ports and a muffler on each exhaust port.
2.
Deplete all pressures in both air systems.
2.
Position the valve on the mounting bracket and
3.
Tag and disconnect all air lines from the valve.
secure with the bolts, lockwashers, and nuts.
4.
Remove the two nuts and lockwashers
3.
Connect the electrical leads as tagged at
attaching the valve and remove the valve.
removal.
Installation
4.
Connect the air lines to the appropriate ports
on the valve in accordance with the identification
1.
Position the spring brake control valve on the
marks made during removal.
mounting studs and secure it with the nuts and
lockwashers.
2.
Connect the air lines to the proper ports on the
valve in accordance with the identification marks
made during removal.
2-7-30 C-1
