Stranded in Georgia

[uchu]

Originally Posted by Roland Trombley

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.

Yikes! Bad sign, indeed. So what's the plan now?

[twinboat]

Screw the 2 big line together, cap the small one and drive.

Back in my day, we drained the tanks at the end of shift.

[Roland Trombley]

Yes

[Unplanned Tourist]

Originally Posted by twinboat

Screw the 2 big line together, cap the small one and drive.

Back in my day, we drained the tanks at the end of shift.

Yes like Twinboat said, you can bypass the drier.

I am not sure what size pipe threads you have for the fittings, but likely 1/2 NPT. Just get a union to join them together and a plug for the signal line (small line) Anyone with a little plumbing experience can do it.

The shop you choose when you get home can drain the tanks for you.

[Roland Trombley]

With the air dryer bypassed doesn't the line from the dryer to the governor need to be connected to something?

[Mark 7]

Originally Posted by Roland Trombley

With the air dryer bypassed doesn't the line from the dryer to the governor need to be connected to something?

No... All that line does is signal the air dryer to vent every time the compressor cycles.

Like others have said... bypass it and be on your way.

Any reputable mobile truck service mechanic should have been able to get you going in minutes. Sad what you have been through.

[mackwrench]

OP, is your governor mounted on passenger side frame rail, in rearmost compartment? Pic below is my 99 Eagle...

The line that's turned downward goes to purge valve on dryer needs to be removed at the dryer or the governor.
The line is plumed into the "exhaust" for the governor.
It doesn't need to be plugged off.


The other 2 lines at dryer simply need a pipe union coupling, I think it's 1/2" pipe. You'll remove the hose fittings from dryer and couple together



A trip to Home Depot and 10 bucks should do it....
Attachment 354321

[Roland Trombley]

Originally Posted by mackwrench

OP, is your governor mounted on passenger side frame rail, in rearmost compartment? Pic below is my 99 Eagle...
Attachment 354316

Exactly like that.
Thank you
🙂
I will revisit this in the AM

Stay tuned

[mackwrench]

Only connection is put the 2 bigger lines at dryer together. The small line from governor has to exhaust the air from governor when pressure reaches set point (120psi)

You may be able to just leave it connected to dryer and it'll be fine.

Once upon a time, trucks didn't have dryers and tanks had to be drained daily or else!
But you'll have no issue getting it home bypassed.

[Roland Trombley]

Wednesday evening a new mobile mechanic came, who was referred to me by the rv park.
He bypassed the dryer so that I could relocate to a new park down the road because I was over the 14 day limit at the park I was in.
Yesterday morning I drove the 3 miles here with it bypassed. But all the way here there were strange noises like air escaping from the front of the coach, and as I arrived the pressure gauge dropped to 60 and the warning light came on. Just as I parked, the pressure went back up to 130 pounds and I shut it down.
The mechanic (Dave) came late yesterday with a new dryer and installed it, but it was dark when he finished. We tested the pressures and everything seems pretty good, with the pressure consistently going quickly up to 130 after pumping it down with the brakes over and over and over.
I am to take it for a test drive today and report back to Dave about how it goes. He feels there may still be a compressor unloader issue. He wants to get me back on the road, but I think he is apprehensive about taking on replacing the compressor, if that is what I need. He was going to do some research this morning on the availability of a compressor and whether or not the unloader is serviceable.
By the way, he did check up front for any leaks and checked the tanks for water and found no issue. I had told him about the noises I heard while driving with the dryer bypassed.

[wolfe10]

If the dryer desiccant comes apart and spreads through the air system, very likely you will have intermittent "odd" issues, as that white powder gets in the valves and other components of the air system.


This is why dryers need to be serviced/replaced every couple of years.

[Roland Trombley]

Just got back from the test drive. After 3 miles I was losing pressure down to 75# and lost all air to the airbags.
I nursed it 3 miles back with pressure rising to around 90. As I got it parked the pressure was back up around 120.

[Hpozzuoli]

Sounds like something amuck with the power to the compressor. Bad ground, relay, board, or dying compressor preventing it from reaching full duty cycle while under way, but appears good while stopped. It’s consistently good while parked. Your issue is only underway. How’s the batteries that run the compressor(s)?

You should be able to remove any extra plug in your air tank and use the appropriate fitting to screw on in order to put a male fitting on. Once that fitting is on use the quick connect from the portable compressor you have to fill the tank.

[wolfe10]

Originally Posted by Hpozzuoli

Sounds like something amuck with the power to the compressor. Bad ground, relay, board, or dying compressor preventing it from reaching full duty cycle while under way, but appears good while stopped. It’s consistently good while parked. Your issue is only underway. How’s the batteries that run the compressor(s)?

NO, this is not an electric compressor, nor is it electrically controlled.


It is engine driven and controlled by the air governor.