04-12-2021, 09:55 PM
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#21 (permalink)
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It's all about Diesel
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Quote:
Originally Posted by Piotrsko
I recall some drivers telling me trucks that big trucks which have airbag suspension require a system that restrains lateral movement, which typically looks like and acts like a leaf spring.
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Not sure about trucks, but in urban buses sometimes the curb side is set to get lower while on a stop in order to ease entry or exit.
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However, Xist! Should explain what his term actually means to those who did not experience the sandbox.
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Doesn't need to go there to figure out what's a spring brake.
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04-12-2021, 10:18 PM
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#22 (permalink)
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home of the odd vehicles
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Quote:
Originally Posted by Xist
Commercial and Army vehicles are required to have a spring-operated parking brake, which also automatically comes on when the suspension air pressure drops below 30 psi. That is part of the commercial pre-trip inspection, but not normally part of the Army Preventive Maintenance Checks and Services (PMCS) inspection, although I always did the same test, because we had the same air brake system.
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Not that it’s a good idea but the brakes can be caged so you don’t have a parking brake, that is what the little metal holder near the frame holds.
It’s rare I meet anyone in the service past or present that knows what a HEMTT is, thank you for your service |
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04-13-2021, 12:01 AM
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#23 (permalink)
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Not Doug
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Thank you for your support!
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A kneeling bus is a bus that not only has no steps between the door and the bus floor, but also has an air-adjustable suspension. This feature allows the driver to actually lower the bus to the curb to make entering and exiting the bus much easier.
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https://www.infobloom.com/what-is-a-kneeling-bus.htm
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04-13-2021, 01:43 AM
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#24 (permalink)
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Master EcoModder
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So, it's not like leaving your parking brake on then?
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04-13-2021, 02:21 AM
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#25 (permalink)
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Not Doug
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Not unless you rip part of the air system.
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04-13-2021, 10:14 PM
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#26 (permalink)
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It's all about Diesel
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Quote:
Originally Posted by Xist
Not unless you rip part of the air system.
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Truckers in my country sometimes clamp defective air brake lines and keep it that way instead of doing proper maintenance until it's too late. In recent years, a few truckers in Brazil have been arrested for driving big rigs with the brakes operating only one axle of the tractor unit.
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