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05-25-2023, 08:59 PM
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#1
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Member
Join Date: Feb 2021
Posts: 91
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DX3 moisture blow out of air tanks
Admittedly a rookie question here and I appreciate all of your knowledge. I have read about and seen on YouTube instructional videos about the need to blow moisture out of the air tanks each day before a trip. There are many how to videos on the Cascadia model. But nothing on the smaller M2 106. I’m just learning all the systems and want to be as precise as possible.
Anyone have any photos or videos showing where to find the lines to pull to drain out moisture? Do you agree on the need to blow the tanks out each day when traveling?
Thank you all.
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05-25-2023, 10:30 PM
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#2
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Senior Member
Join Date: Oct 2018
Posts: 1,216
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If you are supposed to, it’s news to me. Didn’t do in the 3 years I owned my 2018, and haven’t done for the last 2 years in my 2021. We have an air dryer filter on our units that needs to be changed about every 2 years. I have done that.
I look forward to hearing from others, but no one has ever mentioned to me.
__________________
Joe & Cynthia
2021 Dynaquest XL 3801 TS Cindy 'B'
2021 Jeep Wrangler Unlimited Rubicon Diesel
“Breathe in, Breathe out, Move on”
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05-26-2023, 05:31 AM
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#3
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Senior Member
Join Date: Jul 2020
Posts: 159
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Seems to me I read something about it in the Freightliner manual, but I am guilty of not doing it yet. Here's a previous post with some info, no specifics.
https://www.forestriverforums.com/fo...nk-223104.html
__________________
2021 Dynaquest 3801TS
2023 Rubicon JLU Xtreme Recon
2020 Jeep Wrangler Limited Willys
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06-01-2023, 07:32 AM
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#4
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Senior Member
Join Date: Jul 2020
Location: Phoenix
Posts: 850
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I'm under the impression the automatic dryer, the pssssst you hear periodically, takes care of the for you. That is at the bottom of the tank(s) and releases air, and moisture.
__________________
2021 Force 37TS (Detroit DD8)
2021 Jeep Grand Cherokee Trailhawk
2020 Isata-5 36DS (traded in)
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06-01-2023, 09:02 AM
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#5
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Senior Member
Join Date: Oct 2017
Location: Quincy, WA
Posts: 1,506
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The pssst you hear is the air dryer expelling moisture. It happens when your tank pressure reaches the setting on it usually around 120psi tank pressure should never go above 130psi.
The tanks should be drained periodically. On an RV that is only occasionally used probably at the end of your trip before storing for the next trip.
Over the road trucks drain tanks either end of day or end of week.
Regarding your air dryer filter. IMO not a bad idea to change once a year when you store for winter. Cheap insurance in keeping your air system dry.
Make sure you LIGHTY coat the threads on the air dryer with anti sieze. It has been known that some who have let it go for 2 or 3 years end up purchasing a complete unit because the threads have rusted and on removal break the connection point.
Just my thoughts
__________________
Ken and Kathy Redburn
2018 DX3 37TS (The Taj)
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06-01-2023, 10:30 PM
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#6
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Member
Join Date: Feb 2021
Posts: 91
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Quote:
Originally Posted by KRedburn
The pssst you hear is the air dryer expelling moisture. It happens when your tank pressure reaches the setting on it usually around 120psi tank pressure should never go above 130psi.
The tanks should be drained periodically. On an RV that is only occasionally used probably at the end of your trip before storing for the next trip.
Over the road trucks drain tanks either end of day or end of week.
Regarding your air dryer filter. IMO not a bad idea to change once a year when you store for winter. Cheap insurance in keeping your air system dry.
Make sure you LIGHTY coat the threads on the air dryer with anti sieze. It has been known that some who have let it go for 2 or 3 years end up purchasing a complete unit because the threads have rusted and on removal break the connection point.
Just my thoughts
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How do I drain the tanks? Thank you
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06-02-2023, 07:26 AM
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#7
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Senior Member
Join Date: Mar 2015
Location: Akron, OH
Posts: 3,294
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Tanks are in front of the rear axle on M2. Some have a small pull ring, the rest have a square outlet with a thin metal nipple in the middle, you have to move the nipple to the side to release the air.
Here is a link to a picture of the valve. You can see the tiny part in the middle.
https://www.finditparts.com/products...hoCTnsQAvD_BwE
__________________
2023 Dynaquest XL 3700BD
Had...2018 Force HD, 2016 Force, 2014 Thor 33sw
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06-02-2023, 07:29 AM
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#8
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Member
Join Date: Feb 2021
Posts: 91
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Quote:
Originally Posted by halla
Tanks are in front of the rear axle on M2. Some have a small pull ring, the rest have a square outlet with a thin metal nipple in the middle, you have to move the nipple to the side to release the air.
Here is a link to a picture of the valve. You can see the tiny part in the middle.
https://www.finditparts.com/products...hoCTnsQAvD_BwE
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Thank you
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06-03-2023, 04:46 PM
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#9
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Senior Member
Join Date: Jul 2020
Location: Phoenix
Posts: 850
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I'm reading more and more that the automatic driers most all of us have, do the same thing as manual purging.
__________________
2021 Force 37TS (Detroit DD8)
2021 Jeep Grand Cherokee Trailhawk
2020 Isata-5 36DS (traded in)
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06-04-2023, 10:12 AM
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#10
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Senior Member
Join Date: Oct 2017
Location: Quincy, WA
Posts: 1,506
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Quote:
Originally Posted by Invisibleman
I'm reading more and more that the automatic driers most all of us have, do the same thing as manual purging.
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Not entirely true. The air driers dry the air going to the tanks. Some moisture will get through to the tanks. At end of a long trip, not a bad idea to drain tanks. It only takes a couple of minutes to do.
__________________
Ken and Kathy Redburn
2018 DX3 37TS (The Taj)
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