Spin Off Air Dryer

Topic: Spin Off Air Dryer (Read 1874 times) previous topic - next topic

Spin Off Air Dryer

November 29, 2015, 08:52:08 am

Has anyone changed their AD4 or AD9 air dryer to the newer Spin Off models. If so what model and were there any problems? I was just quoted $379 for a new one, an AD-SP.

Re: Spin Off Air Dryer

Reply #1 – November 29, 2015, 08:58:58 am

I have done it to a couple trucks. You can mount the governor to that dryer direct if its more accessable. If you are looking forward to using the air fittings in the base of the housing some of them might be ported. Operation wise they work just as your ad9. We don't have any more or less issues with them than the ad9

Re: Spin Off Air Dryer

Reply #2 – November 29, 2015, 09:15:13 am

Yes, the AD-9 is a direct replacement for the AD-4. Only potential issue would be a different electrical connection for the 12 VDC heater. They do sell the new-style pig tail.

And, I have no problem with a re-man AD-9. That is a FACTORY (i.e. Bendix) reman.

The air system (brakes and suspension) is to critical to trust Chinese almost fit parts and Bubba doing the rebuilding-- just my opinion! And, yes there are a lot of "replaces ......" on the market out there, some with questionable quality.

Re: Spin Off Air Dryer

Reply #3 – November 29, 2015, 02:01:36 pm

Brett, I think the AD-9 is a bolt down cover just like the AD-4. The one that is being recommended to me is a Spin Off Desiccant cartridge just like an oil filter. That means it is something I can change easily without having to pay for pro labor. Where my Dryer is located it easier to remove the whole dryer to change the desiccant cartridge so if I could just spin off the cartridge, I could easily to the job myself.

The recommendation is coming for Cabin Diesel, a very large shop in NE Oklahoma.

Re: Spin Off Air Dryer

Reply #4 – November 29, 2015, 02:34:01 pm

Kent,

Yes, you are correct. No first hand experience with the AD-SP. But, from the Bendix website/on-line catalog or a call to them (800 247-2725) would tell you if they are direct bolt up replacements.

Re: Spin Off Air Dryer

Reply #5 – November 29, 2015, 02:45:21 pm

You guys know what's what (and are smarter) than this rookie. What does a dryer do and where is mine located, how do I know when replacement time is due? My files show "Replaced air dryer as PM new Bendix AD-IP, 4/10."

Re: Spin Off Air Dryer

Reply #6 – November 29, 2015, 02:54:18 pm

Air comes out of the on-engine air compressor and goes directly to the dryer where moisture and oil are removed before it goes to the air tanks and then air brakes, suspension, etc.

At 5 years, I would replace the filter(s) with factory (Bendix in your case) parts.

Yours (U240) is located in the very back passenger's side of the engine room.

Just googled it (did not spend any time price shopping): Bendix 109493X Air Drier Cartridge : Bendix AD-IP Air Dryers

Re: Spin Off Air Dryer

Reply #7 – November 29, 2015, 03:06:51 pm

Quote from: wolfe10 – November 29, 2015, 02:54:18 pm

At 5 years, I would replace the filter(s) with factory (Bendix in your case) parts.

Thanks, Papa.

Is this something I can do with limited tools and a bad back?

Re: Spin Off Air Dryer

Reply #8 – November 29, 2015, 03:36:26 pm

Am I on the right track, are there two, port & starboard & is this reminder for the dryers?

Re: Spin Off Air Dryer

Reply #9 – November 29, 2015, 03:51:00 pm

Picture #1and #2 center on the hydraulic reservoirs (one for PS, one for cooling system fan). They both have filter(s) in them and use Delo 400 15-40 as hydraulic fluid.

Picture #3 is the air filter minder that shows air filter restriction. the air filter is on the driver's side opening side louver door.

In the background and just on the right side of the hydraulic reservoir in #1 is the air dryer!

We really need go over the coach together!

Re: Spin Off Air Dryer

Reply #10 – November 29, 2015, 03:51:26 pm

mike incorrect
on my 280 it is way over in the corner by the tail light
limited tools to change for the same can work with basic sockets and wrenches provided nothing is seized
ad sp will require bracket modifications not a direct fit for ad9

Re: Spin Off Air Dryer

Reply #11 – November 29, 2015, 04:24:34 pm

Quote from: wolfe10 – November 29, 2015, 03:51:00 pm

We really need go over the coach together!

I'll pay your fuel and comp a spot next to us should you want a cruise.You could hit Quartsite in January, as well. Found the dryer, thanx to you & Toby. Looks like BIG FUN to service!

Re: Spin Off Air Dryer

Reply #12 – November 29, 2015, 04:32:57 pm

Sorry, headed east this year.

Presenting the in-depth Maintenance Seminars for the Diesel RV Club Feb 26,2016 in Columbus GA: Diesel RV Club - Rally in the Pines

Then presenting a couple of seminars at the FMCA Convention March 17-20, 2016 in Perry GA: Perry, Georgia, 2016 Family Reunion

Re: Spin Off Air Dryer

Reply #13 – November 29, 2015, 04:42:31 pm

Mike, it's really not that hard of a job.

Re: Spin Off Air Dryer

Reply #14 – November 29, 2015, 05:00:25 pm

Quote from: rbark – November 29, 2015, 04:42:31 pm

Mike, it's really not that hard of a job.

Had mine changed out in Mecca, took two technicians.

Roland

Re: Spin Off Air Dryer

Reply #15 – November 29, 2015, 10:27:55 pm

Guess the older coaches are a bit harder.

Re: Spin Off Air Dryer

Reply #16 – November 30, 2015, 11:12:58 am

Oh ya, this one looks like a piece of cake to remove for service. NOT!

Re: Spin Off Air Dryer

Reply #17 – November 30, 2015, 11:24:01 am

Quote from: mike leary – November 30, 2015, 11:12:58 am

Oh ya, this one looks like a piece of cake to remove for service. NOT!

Yep.... That's why I left mine to the experts in Mecca.

Roland

Re: Spin Off Air Dryer

Reply #18 – November 30, 2015, 12:08:48 pm

The Grand Villas are very tough to get to. I tried but I too have a bad back and cant get enough torque to loosen the air lines. I'll need a pro to do mine. That's why I have decided to replace the old one with the spin off AD-SP.

Re: Spin Off Air Dryer

Reply #19 – November 30, 2015, 12:44:40 pm

Quote from: Kent Speers – November 30, 2015, 12:08:48 pm

The Grand Villas are very tough to get to. I tried but I too have a bad back and cant get enough torque to loosen the air lines. I'll need a pro to do mine. That's why I have decided to replace the old one with the spin off AD-SP.

Even if I didn't have a bad back (which I do), I'd use that excuse to avoid going deep down/up into the dryer cave. I wonder, A) will the spin-off fit the older coaches and B) will one be able to get enough torque to remove/replace it in that crazed tight space? $:-\$

Re: Spin Off Air Dryer

Reply #20 – November 30, 2015, 01:10:29 pm

How about a strap wrench modified with a shortened handle with a good sized nut welded on? A short breaker bar or ratchet along with an 12" extension and socket from above should do the trick.

Pierce

Re: Spin Off Air Dryer

Reply #21 – November 30, 2015, 01:30:19 pm

Quote from: Pierce & Gaylie Stewart – November 30, 2015, 01:10:29 pm

How about a strap wrench modified with a shortened handle with a good sized nut welded on? A short breaker bar or ratchet along with an 12" extension and socket from above should do the trick.

If you decide to go back in business, I'd buy one (if tested) and I'd bet a lot of GV CAT owners would, as well !

Re: Spin Off Air Dryer

Reply #22 – November 30, 2015, 01:47:40 pm

IIRC the reason to go with the reman is to get a new purge valve which are notoriously difficult to remove? Even with a spin off the purge valve would still need service. Me thinks...

see ya
ken

Re: Spin Off Air Dryer

Reply #23 – November 30, 2015, 02:08:25 pm

Quote from: kenhat – November 30, 2015, 01:47:40 pm

IIRC the reason to go with the reman is to get a new purge valve which are notoriously difficult to remove? Even with a spin off the purge valve would still need service. Me thinks...

The thick plottens. Can't wait for you and Dori to come down! Your offer of help is appreciated; I've ordered (as you specified) two cases of Jamesons, five cases of Pacifico and two small techs.

Re: Spin Off Air Dryer

Reply #24 – November 30, 2015, 02:09:15 pm

Quote from: mike leary – November 30, 2015, 12:44:40 pm

I wonder, A) will the spin-off fit the older coaches and B) will one be able to get enough torque to remove/replace it in that crazed tight space? $:-\$

Dryer filters are speced for the dryer, not by model year/old vs newer coach. So, both dryer BRAND and MODEL are important.

Mike: My info shows this is your dryer: New Bendix AD-IP as PM 4/10. So, you will need filter(s) for it. The other reasonable option is to buy a Bendix factory reman dryer.

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