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A "dumb" ETD can be as simple as a red flag attached to the coupler on the last car of the train, whereas "smart" devices monitor functions such as brake line pressure and accidental separation of the train using a motion sensor, functions that were previously monitored by a crew in the caboose. [1]
The fault could be lack of hydraulic fluid, low brake fluid in the reservoir, a broken hydraulic line or a bad master brake cylinder. The sensor is used to detect pressure differentials in the hydraulic system. If the car alerts a fault in the hydraulic system and the system checks out, the sensor itself may have failed. [2]
a brake cylinder on each vehicle containing a piston, connected by rigging to the brake shoes on the vehicle; and; a vacuum (pressure) gauge on the locomotive to indicate to the driver the degree of vacuum in the train pipe. The brake cylinder is contained in a larger housing—this gives a reserve of vacuum as the piston operates.
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Fuel gauge; Engine temperature gauge; Ammeter; Oil pressure gauge; These gauges are supplemented by an assortment of warning lights that indicate the currently selected transmission gear mode, the generic check engine light, and the current status of various vehicle systems.
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A roller brake tester is a method of allowing the dynamic assessment of the braking system of a motor vehicle, whilst the vehicle itself is in a static condition.This type of brake tester is normally used in UK garages when used as part of an inspection lane for the MOT test.
The brake van also contains a stretcher, an emergency train lighting box, and a stand to hold the lamp signal during the night. The vacuum or air pressure gauge is hosted in front of the guard's seat with a lever to operate it in case of emergency. The hand brake can be used in case of high emergency. The remaining part of the coach consists of ...