Community Forums

Unplanned Tourist · 01-08-2022, 10:02 AM

Just remember that it's likely your pancake compressor will likely be slower to build pressure than the engine compressor. So build up the air pressure to 100 plus before driving, and use the brakes sparingly.

Keep the genset going and compressor hooked up needless to say, as you are driving.

I don't know what make or model compressor is on your engine, but Borg Warner compressor unloaders can be changed without removing the compressor. Just pull the intake off and swap them out. Usually it's the o-rings that are leaking. Simple and cheap fix.

If you block off the air governor, see if the pressure comes up. That will point you in the right direction.

TandW · 01-08-2022, 10:04 AM

Quote:

Originally Posted by Unplanned Tourist

Just remember that it's likely your pancake compressor will likely be slower to build pressure than the engine compressor. So build up the air pressure to 100 plus before driving, and use the brakes sparingly.

Keep the genset going and compressor hooked up needless to say, as you are driving.

I don't know what make or model compressor is on your engine, but Borg Warner compressor unloaders can be changed without removing the compressor. Just pull the intake off and swap them out. Usually it's the o-rings that are leaking. Simple and cheap fix.

If you block off the air governor, see if the pressure comes up. That will point you in the right direction.

Knew we could keep the thread going long enough for the experts to start in.
Thanks!

Roland Trombley · 01-08-2022, 10:07 AM

One minute it will go to 125 quickly, but then after a few applications of the brakes, as when maneuvering, it won't generate enough pressure to release the parking brake.

TandW · 01-08-2022, 10:10 AM

Quote:

Originally Posted by Roland Trombley

One minute it will go to 125 quickly, but then after a few applications of the brakes, as when maneuvering, it won't generate enough pressure to release the parking brake.

Just curious. Have you ever drained the water from the receiver tank? If it is loaded with water it has no residual capacity.

twinboat · 01-08-2022, 10:11 AM

If your not against the cost of towing, hire a low boy trailer and drive it up on it.

96 Wideglide · 01-08-2022, 10:21 AM

Quote:

Originally Posted by TandW

Just curious. Have you ever drained the water from the receiver tank? If it is loaded with water it has no residual capacity.

This would be the logical place to start. All 3 tanks!

The tow truck hookup fitting on my coach is a male fitting. You would need a female fitting on the end of the hose.

LETMGROW · 01-08-2022, 10:25 AM

Quote:

Originally Posted by twinboat

If your not against the cost of towing, hire a low boy trailer and drive it up on it.

Best advice yet.
I wouldn't chance driving knowing the brakes could fail at anytime. That'd be just the time "Soccer Mom" pulls out in front of you and you can't stop.

TandW · 01-08-2022, 10:27 AM

Quote:

Originally Posted by 96 Wideglide

This would be the logical place to start. All 3 tanks!

The tow truck hookup fitting on my coach is a male fitting. You would need a female fitting on the end of the hose.

As another afterthought, if his system is in fact loaded up with water, then he may be an unintended victim of the hard freeze that has come south.

mg2016 · 01-08-2022, 10:28 AM

On my 2000 Eagle the air chuck is in the bay under the driver window. Your manual will tell you where yours is located. Should be under towing instructions.

I am not a mechanic but it sounds like you have something in your air lines. Draining your tanks and refilling several times might be helpful. Maybe a second opinion from an other mobile tech
Good luck

Roland Trombley · 01-08-2022, 10:38 AM

Yes, and the mobile technician checked all the tanks before he did anything else.

Unplanned Tourist · 01-08-2022, 10:52 AM

Quote:

Originally Posted by Roland Trombley

One minute it will go to 125 quickly, but then after a few applications of the brakes, as when maneuvering, it won't generate enough pressure to release the parking brake.

Put your hand over the outlet on the air drier while the engine is running. If air is coming out, and pressure isn't building, the air drier is the culprit. (this is of course when the air pressure is low, and you are trying to build it up)

It could be a couple different things wrong with the air drier. Check valve leaking, signal line pressure leaking (from air governor) are 2 common places.

The air drier can be by-passed as long as the signal line is plugged.

Mile Marker 42 · 01-08-2022, 10:59 AM

Quote:

Originally Posted by Roland Trombley

I have hose with a standard male air quick connect fitting, but it does not fit the female quick release on my motorhome

Can you replace the filter to move it? Any Harbor Freight would have fittings for your airline to match up to your port on the coach. I'm like others have said, not towing my rig unless that is the last resort.

Unplanned Tourist · 01-08-2022, 11:00 AM

[QUOTE=Roland Trombley;A mobile service came and found a deteriorated filter in the air dryer,.[/QUOTE]

Ah ha! Sounds like bits of the old filter may be sticking under check valve causing the problem. If so, bypass the drier, plug the signal line and order a new drier.