Quantcast SPRING BRAKE VALVE

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TM 9-2330-394-13&P
BRAKE SYSTEM THEORY OF OPERATION - Continued
0005 00
SPRING BRAKE VALVE
Both the emergency and service brake hose assemblies are plumbed through the spring brake valve,
which is connected to the air tank. If air pressure drops below 60 psi, (414 kPa) the spring brake valve
automatically activates the spring brake system and locks the brakes. Once the spring brake system is
activated, the loss of air pressure must be corrected before the spring brakes can be automatically
released. If sufficient air pressure is unavailable, the spring may be manually released by a special bolt
that compresses the spring in the brake air chamber.
0005 00-5


 


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