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Old 10-09-2016, 09:38 PM   #1
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Brand: Thor Motor Coach
Model: Damon Escaper
State: Texas
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THOR #5653
What kind of brake fluid does full air brakes use

What kind of brake fluid does full air brake systems use?
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Old 10-10-2016, 12:19 AM   #2
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Model: 2017 Windsport 29M
State: Indiana
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THOR #5196
If you have air brakes they run off the air compressor mounted on your engine. You need to have the engine running and then watch pressure gauge. Air brakes use pressure to release the brakes, no pressure and the brakes will be locked up.
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Old 10-23-2016, 01:27 AM   #3
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Model: 2016 Siesta Sprinter 24ST
State: Florida
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THOR #2812
This may help: RV Tech Library - Introduction to Air Brakes

Also the basic site, RV Tech Library - Home Page
has a lot of RV system information.
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Old 11-20-2016, 02:40 AM   #4
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Brand: Thor Motor Coach
Model: Gemini 24TX (Formerly)
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Air brakes are a completely different animal than hydraulic systems. Air brakes use air pressure instead of hydraulic fluid, and if you have air brakes there are some inherent differences in how you should use them, vs hydraulic. Most coaches with air brakes will also have some sort of engine braking system IE: Jake Brakes, which are critical to know how to use if you are coming down a long steep grade. The short answer to the OP's question, is no fluid, only air.
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