RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 02-26-2018, 12:17 PM   #1
Junior Member
 
Join Date: Mar 2013
Posts: 25
Question Bendix AD-9 Cartridge Replacement

How often are you guys replacing the cartridge on your air dryer for your coach? The Bendix site says between 9,000-10,500 hours, or every 2, or 3 years depending on use. As you all know, most of our coaches are going to see nowhere near this amount of use. I'm at 5 years right now, and wanted to get your feedback on replacement intervals.

Thanks!

JG
jgdds is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-26-2018, 12:37 PM   #2
Senior Member
 
2 Stroker's Avatar
 
Join Date: Nov 2009
Location: Warren, Oregon
Posts: 2,464
Have you checked your air tanks to see if there is any moisture or water in them, if you see any water change it. I have 4 years on mine and nothing but air and about 15k miles, plus it depends where you live with (High Humidity) air saturated with water.
2 stroker
__________________
2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
2 Stroker is offline   Reply With Quote
Old 02-26-2018, 01:17 PM   #3
Junior Member
 
Join Date: Mar 2013
Posts: 25
The only evidence of moisture I have is when the purge vavle opens for the first time or two, I get a little splash. After that, it is clean and dry. Tanks show no evidence of moisture either. I have about 25K on the coach, but I do live in the south where it is very humid!
jgdds is offline   Reply With Quote
Old 02-26-2018, 03:53 PM   #4
Senior Member
 
Join Date: Jun 2016
Location: Nine Mile Falls WA / Arizona City AZ
Posts: 1,039
The dryer cartridge is filled with a descent that absorbs water.... it will get contaminated from any tramp oils that come down the compressor line from the compressor as the unit ages and wears... any tramp oil that gets by the rings will end up on top of the piston and when the valves close and the compressor starts to pump again will be picked up under heat and sent to the dryer...

On a fleet of trucks, most owner replace the cartridge once a year, we did it as we started winter and the cold moist air...

you will want to pay attention to the weight of the cartridge if you buy an aftermarket brand as the simple way to skimp on the cost of to have less descent in the cartridge... so it will weigh less... I never bought OE stuff... way too expensive and we often would buy a case for under $30 per cartridge .... and often any of the truck dealers will offer winter specials on these items... BTW I've a lot of these go for over $100 a piece for those buyers who are not aware of their value..

If I'm going to buy one and store it... I don't buy it unless its sealed in plastic.. so that the moisture in the air won't contaminate it over the time it sits... or I drop in in a 1 gallon zip lock plastic bag...

BTW annually either pull the plug in the bottom of all 3 tanks or open the drain valves to make sure there is no water in the tank... if your a CDL driver that's required in you a.m. walk around...
__________________
Retired Business Owner, Re-manufacturing HD Clutches, Brake Shoes, Air Compressors, Sales & Installation of PacBrake and other Industrial Friction
jelag is offline   Reply With Quote
Old 03-18-2018, 09:36 PM   #5
Junior Member
 
Join Date: Mar 2013
Posts: 25
Thanks jelag for the info. I ordered a reman cartridge and plan to change it this next weekend. I am a Class B CDL holder and have checked my tanks many times and never found any moisture in them so I guess it is doing the job.
__________________
2013 Sportscoach Crosscountry 385DS with Cummins 360XT and Allison 3000
jgdds is offline   Reply With Quote
Old 03-18-2018, 10:48 PM   #6
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 16,280
Mine is a nightmare to change, so I've procrastinated. Mine is 4 years and will change it this month for the first time.
__________________
Don & Mary
2019 Newmar Dutch Star 4018
2019 Ford Raptor
Dutch Star Don is offline   Reply With Quote
Old 03-18-2018, 11:04 PM   #7
Senior Member
 
Old Scout's Avatar
 
Join Date: Nov 2005
Posts: 6,157
....yup, changing the AD-9 cartridge can be a PITA--the cartridge is screwed to a threaded stud in the assembly. I ended up removing the entire assembly, fastening it to a piece of plywood, and then fabricating an oversized strap-wrench and cheater bar to loosen the cartridge from the stud.....
PS--absent any signs of water or oil in your reserve air tank drain, have heard the bag holding the desiccant in the cartridge can deteriorate and release it into the system--so 4-5 years is probably a good time to change them out.....
__________________
Old Scout
2003 Alpine 40' MDTS
New Braunfels, Texas
Old Scout is offline   Reply With Quote
Reply

Tags
ace, replace, replacement



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bendix air dryer cartridge model 2002 Magna birdhunter Country Coach Owners Forum 1 01-04-2016 07:55 AM
Help with Dessicant Cartridge Replacement USMCRET Spartan Motorhome Chassis Forum 8 04-22-2015 10:20 PM
Bendix AD-4 Air Dryer Cartridge Replacement deandec Class A Motorhome Discussions 2 11-03-2013 08:34 PM
water filter replacement cartridge rvGator Winnebago Industries Owner's Forum 8 03-21-2010 01:01 PM
ADC Water Filter Cartridge Replacement Zimectrin RV Systems & Appliances 6 12-18-2007 05:32 AM


All times are GMT -6. The time now is 04:02 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.