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Old 06-17-2016, 11:45 AM   #1
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Join Date: Jun 2016
Location: Nine Mile Falls WA / Arizona City AZ
Posts: 305
Air Brakes / care of air system

I'm a newbe to this forum but spent my working years re-manufacturing clutches, brakes, air compressors and other items for HD trucks...

I've already read to posts from people who are having air brake issues.... and while I was at coffee this a.m. the following came to mind...

1 - your air brake systems have a air drier in the system and for safety sake most of the filters/cartridges with desiccant are normally changed on a truck every year or so... usually at their annual inspection date... this prevents water from water logging the air tanks.... I'm not suggesting that you change the drier cartridge annually like a over the road truck... but would suggest at least every other year..... this will prevent the dirt and moisture from passing to the tanks and valves...

2 - when a driver gets into his truck, part of his DAILY walk around is to check and drain the air tanks... this prevents the moisture from building up and rusting the inside of the tank... but the key reason to drain the tanks is so that you have a full charge of air in the tanks... moisture/water will consume space... this space used by the water will limit the use of the air brake system... if the tanks are say 1/3 full of water... that means that the pressure in the tanks will fall off sooner... and thus allow the e-brake system to come on sooner.... or might limit your ability to use your brakes in town where your in stop/go traffic or steep hills....

3 - some chassis have automatic drains but I can promise you... that while and RV sits a lot... these automatic systems can and will rust up and not function... if you've not checked or drained these tanks... please consider understanding this process and do it at least weekly when your on the road... AND IF you have a contaminated air drier cartridge you need to do this daily.... all mechanical systems usually have a simple spring loaded valve on a wire... you pull the wire/cable, pull the valve off its seat against the spring and the water will spurt out.... and this can get messy...

4 - if your really concerned, there is an alcohol based additive that can be added to absorb the water...

Hope this helps you better understand your air brake system...

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Old 06-17-2016, 05:34 PM   #2
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Thanks for the helpful info.
Ron check our frequently but there has never ever been any moisture come out.

Ron & Linda
2000 Dynasty 38PBS
Full time since 2007
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Old 06-17-2016, 07:34 PM   #3
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Thanks jelag. Good info.
And welcome to the forum.
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Old 06-17-2016, 07:41 PM   #4
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Thanks for the very helpfull info !!
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
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Old 06-17-2016, 08:14 PM   #5
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Thank you for the reminder! Many of us come from other fields and it great to have an experienced resource to clear things up.
Jim and Jennie, Cats=Bittles and Potter, 2000 Dynasty 350 ISC
2013 Silverado 4x4 Towed with R1200GS in bed.
PROV23:4 Do not wear yourself out to get rich; have the wisdom to show restraint.
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air brakes, brake, brakes

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