Cylinder Leaks - Revision history

Slobodan: Tweaks

2025-03-17T17:39:42Z

Tweaks

← Older revision		Revision as of 17:39, 17 March 2025
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	Over time, {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders}}, ~~thus~~ they cannot be relied upon to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.		Over time, the {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders}}, so they cannot be relied upon to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.

	<!--T:2-->		<!--T:2-->
	That said, if a train with a {{pll\|Train Brake\|train brake}} ~~applied~~ contains a motorized vehicle with a {{pll\|Lapping\|self-lapping}} control valve and a functioning {{pll\|Compressor\|compressor}}, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a {{pll\|Lapping\|non-self-lapping}} vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the {{pll\|Lapping\|service}} position.		That said, there are ways to keep running trains safely stationary without handbrakes too, even though this is not recommended. If a train with an applied {{pll\|Train Brake\|train brake}} contains a motorized vehicle with a {{pll\|Lapping\|self-lapping}} control valve and a functioning {{pll\|Compressor\|compressor}}, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a {{pll\|Lapping\|non-self-lapping}} vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the {{pll\|Lapping\|service}} position.
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	[[Category:Air Brake System\|4]]		[[Category:Air Brake System\|4]]

Slobodan: Tweak

2025-03-11T15:25:03Z

Tweak

← Older revision		Revision as of 15:25, 11 March 2025
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	Over time, {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders}}, thus they cannot be relied on to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.		Over time, {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders}}, thus they cannot be relied upon to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.

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Slobodan: Typo

2025-03-09T20:53:46Z

Typo

← Older revision		Revision as of 20:53, 9 March 2025
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	Over time, {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders, thus they cannot be relied on to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.		Over time, {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders}}, thus they cannot be relied on to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.

	<!--T:2-->		<!--T:2-->

Slobodan: Cleanup

2025-03-09T20:53:20Z

Cleanup

← Older revision		Revision as of 20:53, 9 March 2025
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	{{pll\|Air Brake System Overview\|~~Brake cylinders~~}} ~~aren’t perfect and~~ leak air ~~over time~~. ~~Thus~~, they cannot be relied on to keep the {{pll\|Brake Shoes\|brake shoes}} applied ~~for too long~~. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied.		Over time, {{pll\|Air Brake System Overview\|air brake system components}} leak air. This includes the {{pll\|Air Brake System Overview\|brake cylinders, thus they cannot be relied on to keep the {{pll\|Brake Shoes\|brake shoes}} applied indefinitely. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied manually.

	<!--T:2-->		<!--T:2-->
	That said, if a train with ~~applied~~ {{pll\|Train Brake\|train ~~brakes~~}} contains a motorized vehicle with a {{pll\|Lapping\|self-lapping}} valve and a functioning compressor, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a non-self-lapping vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the service position.		That said, if a train with a {{pll\|Train Brake\|train brake}} applied contains a motorized vehicle with a {{pll\|Lapping\|self-lapping}} control valve and a functioning {{pll\|Compressor\|compressor}}, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a {{pll\|Lapping\|non-self-lapping}} vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the {{pll\|Lapping\|service}} position.
	</translate>		</translate>

	~~{{See also\|Air Brake System Overview\|Lapping\|Manual Cylinder Release\|Monitoring\|Train Brake\|Independent Brake\|Brake Shoes\|Handbrake}}~~
	[[Category:Air Brake System\|4]]		[[Category:Air Brake System\|4]]

Leko at 11:54, 7 March 2025

2025-03-07T11:54:14Z

← Older revision		Revision as of 11:54, 7 March 2025
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	Brake cylinders aren’t perfect and leak air over time. Thus, they cannot be relied on to keep the brake shoes applied for too long. This is why on parked vehicles a handbrake must be applied.		{{pll\|Air Brake System Overview\|Brake cylinders}} aren’t perfect and leak air over time. Thus, they cannot be relied on to keep the {{pll\|Brake Shoes\|brake shoes}} applied for too long. This is why on parked {{pll\|Rail Vehicle Types\|vehicles}} a {{pll\|Handbrake\|handbrake}} must be applied.

	<!--T:2-->		<!--T:2-->
	That said, if a train with applied train brakes contains a motorized vehicle with a self-lapping valve and a functioning compressor, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a non-self-lapping vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the service position.		That said, if a train with applied {{pll\|Train Brake\|train brakes}} contains a motorized vehicle with a {{pll\|Lapping\|self-lapping}} valve and a functioning compressor, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a non-self-lapping vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the service position.
	</translate>		</translate>

	{{See also\|Air Brake System Overview\|Lapping\|Manual Cylinder Release\|Monitoring\|Train Brake\|Independent Brake\|Brake Shoes\|Handbrake}}		{{See also\|Air Brake System Overview\|Lapping\|Manual Cylinder Release\|Monitoring\|Train Brake\|Independent Brake\|Brake Shoes\|Handbrake}}
	[[Category:Air Brake System\|4]]		[[Category:Air Brake System\|4]]

Nenad: importing old manual

2025-02-28T15:57:44Z

importing old manual

← Older revision		Revision as of 15:57, 28 February 2025
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	{{See also\|Air Brake System Overview\|Lapping\|Manual Cylinder Release\|Monitoring\|Train Brake\|Independent Brake\|Brake Shoes\|Handbrake}}		{{See also\|Air Brake System Overview\|Lapping\|Manual Cylinder Release\|Monitoring\|Train Brake\|Independent Brake\|Brake Shoes\|Handbrake}}
	[[Category:Air Brake System]]		[[Category:Air Brake System\|4]]

Nenad: importing old manual

2025-02-28T15:29:14Z

importing old manual

New page

<languages />
{{OldManualArticleNotice}}
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Brake cylinders aren’t perfect and leak air over time. Thus, they cannot be relied on to keep the brake shoes applied for too long. This is why on parked vehicles a handbrake must be applied.


That said, if a train with applied train brakes contains a motorized vehicle with a self-lapping valve and a functioning compressor, as long as the engine is running the pressure in all of the train’s brake cylinders will be maintained. This means runaways due to leaks won’t be possible. If the train, however, only contains a non-self-lapping vehicle doing the braking, pressure in the cylinders will not be maintained and can lead to a runaway, unless the brake handle is in the service position.
</translate>

{{See also|Air Brake System Overview|Lapping|Manual Cylinder Release|Monitoring|Train Brake|Independent Brake|Brake Shoes|Handbrake}}
[[Category:Air Brake System]]