Profile For Matthew M.

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    2 years, 11 months ago

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Comments By Matthew M.

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Posted:  2 years, 11 months ago

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Air brake warning signal

S5.1.5 Warning signal. A signal, other than a pressure gauge, that gives a continuous warning to a person in the normal driving position when the ignition is in the “on” (“run”) position and the air pressure in the service reservoir system is below 60 psi. The signal shall be either visible within the driver's forward field of view, or both audible and visible.

I live in a 1992 School Bus and one of the buzzers failed so I replaced both signal buzzers (coolant temp and air brake) in the bus with a Circle K style "ding-dong". Is this a DOT fail? It's continuous. It's persistent and it's loud.

If you hear it often, you are doing something wrong. Don't floor it unless is an emergency and learn to manually use the retarder and the engine brake. For example, I always use the engine brake to slow down for the tollbooths, I engage the normal brake only when I'm running like 10-15 km/h near the barrier and the engine brake no longer works.

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