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MHV9218

Lowering Mechanism Question

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A bus cannot move while it's in the kneeling position.

 

The buses here also cannot move while the back doors are open due to the interlock. The slightest pressure on the back doors while a bus is in motion can bring a bus to a sudden and dangerous halt if the interlock is disrupted

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The O7s probably work differently then, they may be the exception.

 

There's been times when the back doors have had to be closed manually because they did not close right. Usually a simple tug helps.

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Quick question here that maybe somebody can shed some light on, is it possible to drive the bus while the lowering mechanism is down? I know if a driver moves while the back door is open an alarm sounds, if he moves with the front door open there's a sort of beep, but what about with the nose down?

 

Sometimes the interlock with the kneeler will release the throttle but not be at the appropriate ride height. The only way you know is when you hit a bump and the bus bottoms out. Usually that will "shock" the valves in the air system to bring the bus all the way up.

 

The interlocks get f**ked up all the time. Your not suppose to be able to move with the rear door open, yet we had a RTS at NBT that would run at highway speeds with the rear door WIDE open. Another one is the wheelchair ramp/lift.....a driver at CTTransit ripped off a ramp because she pulled off with it out and hit a pillar at Melville Plaza. Interlocks are a great thing but they can bite you in the ass if your not paying attention

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