Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Jeff M. on August 25, 2024, 10:26:27 am

Title: Swapping Air Dryer AD-4 to AD-9
Post by: Jeff M. on August 25, 2024, 10:26:27 am
Hello all,

Getting ready to upgrade the old AD-4 dryer to an AD-9.  I have been researching the swap and have come across several different "model numbers".  From what I can tell, the differences are everything from 12v vs 24v, 1/2" npt vs 3/4" npt fittings, mounting brackets provided or not, extended length vs standard height etc. 

I would like it to be as "plug and play" as possible so I think I have narrowed it down to this one knowing I will also need to pick up a wiring harness for the heater.

Genuine Bendix 065225 12-Volt AD-9 Air Dryer with Mounting Bracket Kit (No... (https://www.anythingtruck.com/product/060-065225.html)

Thoughts?

For anyone that has done this swap, will the AD-9 fit the old AD-4 mounting brackets?



Or...

Is there a better option other than the Bendix, as far as maintenance goes, that does not require reinventing the wheel?

Thanks....
Title: Re: Swapping Air Dryer AD-4 to AD-9
Post by: Chuck & Jeannie on August 25, 2024, 11:42:12 am
Jeff,

Our coach came with the AD-9, so I haven't done the swap.  Because every coach Foretravel builds can be slightly different, I always hesitate to make any broad statements about what will fit where.

If you haven't already, try reading through the thread linked below to see if you get any answers to your questions:

How to update Bendix AD4 to AD9 on 91 GV U300 (https://www.foreforums.com/index.php?topic=42165.0)

Title: Re: Swapping Air Dryer AD-4 to AD-9
Post by: Andy 2 on August 25, 2024, 01:52:31 pm
I switched  out my old AD 4 to AD 9 on our 92 with a 6V92 with no problem, run your hot wire to one side and add a ground to the frame. Good luck
Title: Re: Swapping Air Dryer AD-4 to AD-9
Post by: Jeff M. on August 25, 2024, 02:13:52 pm
Jeff,

Our coach came with the AD-9, so I haven't done the swap.  Because every coach Foretravel builds can be slightly different, I always hesitate to make any broad statements about what will fit where.

If you haven't already, try reading through the thread linked below to see if you get any answers to your questions:

How to update Bendix AD4 to AD9 on 91 GV U300 (https://www.foreforums.com/index.php?topic=42165.0)
Thanks for the link Chuck.  I will check it out....
Title: Re: Swapping Air Dryer AD-4 to AD-9
Post by: Jeff M. on August 25, 2024, 02:15:56 pm
I switched  out my old AD 4 to AD 9 on our 92 with a 6V92 with no problem, run your hot wire to one side and add a ground to the frame. Good luck
Thanks Andy, Good to hear your swap was no problem.  That helps a lot.
Title: Re: Swapping Air Dryer AD-4 to AD-9
Post by: Elliott on August 25, 2024, 02:25:24 pm
 Should be an easy swap but like chuck said, hard to know until you start doing it. Decent chance you will need this wiring harness though https://a.co/d/hTRx1Ok
Title: Re: Swapping Air Dryer AD-4 to AD-9
Post by: Jeff M. on August 25, 2024, 02:37:44 pm
Should be an easy swap but like chuck said, hard to know until you start doing it. Decent chance you will need this wiring harness though Amazon.com: WIRING HARNESS CONNECTOR PIGTAIL - AD-IP AD-SP AD-IS AD-9 -... (https://a.co/d/hTRx1Ok)
Thanks for the heads up on the harness... now I just gotta figure out if my dryer has the 1/2" or the 3/4" ports...