Community Forums

TandW · 01-15-2022, 07:03 AM

This is good news. Maybe someone can chime in with the expected pressure build-up rate for your compressor so you can put that out of your mind.

mackwrench · 01-15-2022, 08:05 AM

That's good news! I never suspected the compressor was failed.

You feel comfortable to drive it home? I'd probably go for it...or to get home, A trip to hardware store for a few fittings and you can bypass the dryer. Google for a picture based on your brand of dryer.

.....some of the failed dry descinent maybe had the unloader valve stuck or the dryer purge valve stuck open....

8v8tor · 01-15-2022, 08:21 AM

Initial problem sounded like a bad governor, stuck unloader may just have needed some exercise. Older style dryers can be easily bypassed, newer ones, not so much. Dryer desiccant should not have affected the compressor unloader, as it is downstream, would sure screw up a lot of other stuff down stream though. I have a spin on filter on my dryer which I change every fall, realize on a MH that would be overkill. Think I would still change about every 2 or 3 years though.

Unplanned Tourist · 01-15-2022, 08:33 AM

Roland, it sounds like your system is working well.

As long as your low air warning light and buzzer are working, I would not be afraid to drive it.

If your air doesn't leak down while driving, you will have plenty of time to find a spot to stop if you have more problems. That's why the warning system is there. Put your trust in it.

Have a great trip home. You can have the new drier put on after you get home.

mackwrench · 01-15-2022, 08:46 AM

Quote:

Originally Posted by 8v8tor

Initial problem sounded like a bad governor, stuck unloader may just have needed some exercise. Older style dryers can be easily bypassed, newer ones, not so much. Dryer desiccant should not have affected the compressor unloader, as it is downstream, would sure screw up a lot of other stuff down stream though. I have a spin on filter on my dryer which I change every fall, realize on a MH that would be overkill. Think I would still change about every 2 or 3 years though.

I agree. .....and air dryer descinent filter is very often overlooked by owners that let place like speedco, some truck dealers, or worse RV stores like CW do "oil change" where dryer ain't on their radar because customer didn't ask for it.

Replacement depends on use and location, I've seen on highway trucks with 200k with same spin on dryer filter, of course that might only mean 2 years in service...
and other vehicles that are 5/6 years old 30k miles with filters that crapped out.

Unfortunately OP just purchased this coach and my not have any service history. There's a thread over in the Fleetwood section with tons of info regarding popular issues/failure on his model.

Crusingator · 01-15-2022, 11:46 AM

As members can see on my signature, we have been MOTOR-HOME-LESS for over five years, prior to that we traveled often. When not traveling I stayed busy tinkering with my toys. Wrote hundreds of post's about our RV's, most of our coaches were Tiffin class A coaches, We were and still are members of the Tiffin RV Network website. I'm assuming I will not be violating forum rules by posting the links to many of my documents?
Crusingator's Files
Several of the written documents cover the coach air piping system, Air Dryer and Air Compressor systems.

Roland Trombley · 01-16-2022, 06:02 AM

Still waiting for the new air dryer to arrive. Now, of course, we also have this winter storm holding up its arrival.
When they do finally get it installed I plan to take the coach out for another local road test before heading into Atlanta on I75.
I'll keep you guys posted with any new developments. I certainly appreciate all the helpful
suggestions and advice that I have received.
Thank you.
🙂

mackwrench · 01-16-2022, 06:08 AM

Quote:

Originally Posted by Roland Trombley

Still waiting for the new air dryer to arrive. Now, of course, we also have this winter storm holding up its arrival.

When they do finally get it installed I plan to take the coach out for another local road test before heading into Atlanta on I75.

I'll keep you guys posted with any new developments. I certainly appreciate all the helpful

suggestions and advice that I have received.

Thank you.

Be safe!

Roland Trombley · 01-16-2022, 06:41 AM

Quote:

Originally Posted by 8v8tor

Initial problem sounded like a bad governor, stuck unloader may just have needed some exercise. Older style dryers can be easily bypassed, newer ones, not so much. Dryer desiccant should not have affected the compressor unloader, as it is downstream, would sure screw up a lot of other stuff down stream though. I have a spin on filter on my dryer which I change every fall, realize on a MH that would be overkill. Think I would still change about every 2 or 3 years though.

I know that the dryer dessicant is downstream from the compressor, but is it possible that some debris may have made its way to the governor and/or unloader through the tube that goes from the dryer to the governor?

Unplanned Tourist · 01-16-2022, 08:39 AM

Quote:

Originally Posted by Roland Trombley

I know that the dryer dessicant is downstream from the compressor, but is it possible that some debris may have made its way to the governor and/or unloader through the tube that goes from the dryer to the governor?

The line actually goes FROM the governor TO the air drier. It's called the signal line. It signals the drier to purge at the same time as it (the governor) sends pressure to the unloaders in the compressor. So I wouldn't think anything could get back to the governor.

The governor gets air pressure from your main air tank to control the compressor. It is possible that some debris could have gotten to it that way, but unlikely. I hope that helps you understand how your system works.

Roland Trombley · 01-16-2022, 08:49 AM

Thank you for clearing that up for me.
🙂

Bearmtn · 01-17-2022, 01:09 AM

It doesnt have to be an engine driven compressor. Look for a quick coupler on the supply tank. Just follow the braided hose from the compressor and that first tank is the one you need to fill. If there is no coupler you can add one to a port somewhere on that tank. But you need a good size compressor. like 10 to 15 cfm. Loooks like you are sorted out but that may help someone else.

Roland Trombley · 01-20-2022, 04:47 PM

Still stuck here. Had to fire the technicians that showed up with the wrong part after waiting for over a week for its arrival. I knew I was in trouble when he was trying to hammer a brass fitting into an unthreaded port in the aluminum casting on the new air dryer.