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It supplies air to the service chambers of the brake chambers in order to engage the brakes.

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Q: What is a service line in a tractor trailer?
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Related questions

What are names of the two airlines between tractor and trailer?

Trailer emergency supply line and trailer service line.


What is the color on a tractor trailer service hose?

Blue


What is a tractor trailer protection valve?

protection valve maintains air in the tractor brake system in the event of the trailer air lines becoming compromised.for example, if a trailer line is leaking, broken or disconnected


How long is the tractor on a tractor trailer?

For a sleeper berth equipped line haul tractor, the wheelbase normally measures between 220 and 265 inches.


How much does a tractor trailer rig weigh?

The tractor weighs 20,000 pounds, the trailer weighs whatever it weighs, and the maximum weight of a loaded tractor trailer with one trailer is 80,000 pounds.


When was the newest tractor invented?

tractor trailer


If a tractor is insured is the trailer that the tractor is hooked insured?

I would have to say no. I have a tractor that is insured the only thing that is insured is just that the tractor (fire theft etc). Although You can get your trailer insured just as you can an ATV horse trailer car truck if you had a policy for it. your tractor insurance will not help with the trailer.


What is another name for a tractor trailer?

semi truck, or semi tractor trailer, and 18 wheeler.


How is a trailer attached to a tractor?

Depends on what type of tractor and trailer you had in mind. For a farm tractor pulling a trailer, it's usually a pintle on the tractor which is run through a clevice on the trailer. For road going vehicles, the fifth wheel trailers are often used, where a trailer kingpin will be inserted and locked into a fifth wheel on the vehicle. In the case of an 18 wheeler, air lines will connect from the tractor to the trailer to operate the trailer's air brake system.


Very large truck - two connected sections - tractor and trailer?

Semi or Tractor Trailer-semi.


What the trailer air supply controls does?

what does the service air line do


What does the trailer air supply control do?

what does the service air line do