I have a air hose in my propane bay for airing up tires.
Does this work from the Aux air compressor or from the air compressor from the engine?
Both. But for airing up tires you'll probably want the engine running. Unless the stock aux compressor has been upgraded, it's not going to keep up very well for the pressure and volume of filling tires. It's more for low volume demands like keeping your air bags inflated.
Even with the engine running it can be a slow process. Works best just after governor cut out at 120 psi. If you are trying to get your tires up to 110 - 120 forget it. 120 is way too high for most coaches. Even at 90 psi sometimes I have to waste some air to get the governor to cut in, then wait for pressure to build.
I have a Viair compressor with it own pressure switch set at 115 psi hard piped to the wet tank.
It will fill the front tires to 110 psi via the air connection, but is very slow.
Thanks guys. I tried several things
1 bled down the air and tried to air up a jeep tire and aux compressor did not come on.
2 brought the air up on the coach and leveled it and shut off the engine, still wont air the tire.
3 started the coach and it pumped up the tire.
looks like the bottom line on mine is I have to have the engine running to air up a tire. Now I nee to get get another 25' of hose to reach the left rear so I can air up the inside dual ::) I have someone coming tomorrow to fix the slow leak but I want to add air so I am not just setting on one tire on that side
I have an SMC Booster Regulator. With that and my system air, I can quickly fill my tires to 115, or even 120.
I'll be at Grandvention and at the Calif Chapter MC rally in Temecula if anyone wants a demonstration.
I have a 130 psi air governor makes airing tires a breeze.
Thanks Tom, I was going to try and make it to Grandvention but other things got in the way. I was supposed to be in Branson but something else has come up so I am in Wichita for a couple of days and head to Denver Thursday then back to Wichita.
My top pressure from the D2 governor is 130.
https://www.youtube.com/watch?v=QDOqCk6dTuo
Not sure from the D2 I get 110 to the tanks for the bags, but I only run about 90 psi, I dont carry a lot of stuff with me
Thanks Twig, very good video
I agree with Tom, I had a booster for my Newell and it does work fast to air up. Mine was set at about 160 psi and it's basically an air operated air pump that increases the air pressure.
However now I'm running my fronts at 90-95 psi and rears at 85 psi so not a problem with the engine running.
At 130 top pressure and 110 cut in you can fill your tires and the brakes are noticeably stronger
Look at your air system schematic. In my coach line 57 from the small compressor is isolated from the aux air hose connection by a check valve. If you are getting air out of your aux air connection it comes from the rear brake service tank.
I have not found an air chuck yet on my 99 U270, does anyone know?
How do wrecker trucks hook to out air brakes if we are been towed?
They use a male to male fitting hooked to your air chuck, which I am sure you will either find, or find where it was removed.
David,
On a '99 U-270 it would have been an option that could be added, not standard like on the 295 and 320
Mike
Ok Mike
Thanks, thought was what it was
That's just one more thing to add to my list of never shortening things to do!
I have seen my buddy use the pressure booster. You are adding wet air to the tires. No no
Super 8 weigh your front and rear axles at a local grain elevator or coop, then download your tire pressure/load chart for correct tire pressures, my coach tires are listed at 110 psi max. With my axle weights and tires I am underloaded on the chart which ends at 75 psi. Interesting enough that is close to the coach data plate # psi of 75 front/ 80 rear. I started my journey home on 105 psi tires, by the time I got to Winslow AZ. I had bled them down to 85.
My Uniroyal at max is Front 105 and rear 87, I am running 95 and 85.
When I get home in 2 weeks I will weigh it when I fuel up and let her rest for 2 weeks before I take off again.
I also have the Viair compressor with a added tank. Works great. Recommend it.
The only time I use the on-board air is when we're getting ready to break camp and the engine can run to be warm under load. Otherwise, at the pier, long term,I have this so I don't have to short start-up (bad for the engine and noisy for the neighbors). ^.^d
Hey Bruce, How do you change the D2 to 130 psi?
BTW...Twig uses a portable pancake air compressor. It was a good video, though.
Does anyone know a SPECIFIC name brand and model of the kind of air filler that you can just attach to the stem??
Thanks
Pretty simple, I raised mine to 130 before this trip.
https://www.youtube.com/watch?v=kYRQsGrLEiI
Get a kit like this. Extra parts never hurt.
WYNNsky Air Coupler and Plug Kit, Quick Connect Air Fittings, 12 Piece 1/4"... (https://www.amazon.com/dp/B071V7VJC5/ref=psdc_552276_t1_B07BTBLQTZ)
Screw a 2 male fittings (one with a male threaded end and one with a female fitted end) together to connect an air hose
Add a oil/water separator like this to keep water out.
Amazon.com: TEKTON 4755 Oil/Water Separator: Home Improvement (https://www.amazon.com/gp/product/B001NSYV58/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)
Adjustment instructions and other nice-to-know info here:
http://www.plazafleetparts.com/uploads/2/1/9/0/2190100/d-2_governor_maintenance.pdf
A. Remove the top cover from the governor.
B. Loosen the adjusting screw locknut.
C. To raise the pressure settings, turn the adjusting screw
counter-clockwise. To lower the pressure settings, turn
the adjusting screw clockwise. Note: Be careful not
to over adjust. Each 1/4 turn of the adjusting screw
raises or lowers the pressure setting approximately
4 psi.
D. When proper adjustment is obtained, tighten the
adjusting screw locknut and replace the cover.
I carry an inexpensive 110V contractor's compressor and this air dryer: https://www.harborfreight.com/38-in-desiccant-dryer-with-oil-removal-filter-69923.html Have to use the generator as the inverter won't start it.
Pierce
Unless you have a way to verify that the air is dry you are using you are introducing water into the tire. Rusts the inner belts. Boom.
I've been filling tires with gas station air for over 60 years with no boom. What kind of tires do you have mounted? ;) ;) ;)
Pierce
All my shredded motorhome tires on my Foretravel factory stores lot had rusty inner cord belts. The coaches air outlet is after the air dryer. I have had tires thump for long times in winter use from frozen water in the tires. The brakes require dry air to work safely in winter.
I use Mylers non water based lube to mount the tires on the rim.
Ahoy me hearties ... rusty yarns from 30 years ago or more. Me onboard DeWalt blower puts out air at 150 psi, fills me tires fast. I use me water separator too. Frozen water in th' tires ... only in shakeytown dreams, never in MN. Har Har Har
Personally I do not discount others safety related comments.
What can it hurt to use the oem system which, for sure, removes the water vapor?
Commercial airplanes use dry nitrogen to prevent ice forming in the tires. We skied. Had thumping tires several times before I switched to for sure dry air.
I had a poorly maintained air dryer on a used coach we took skiing have the brakes stop working from ice buildup in the system.
And a propane regulator form an ice ball from water in the propane tank and stop the gen at minus 30.
Had to add alcohol in a fill hose to mix the water better and put the coach indoors long enough to heat the regulator.
I have a co2 tank that I use on my Wrangler to air up after having lowered tire pressure for wheeling in soft sand. Is co2 considered dry air? or is it really wet?
Check this link: wheels - Why nitrogen and not carbon dioxide is used in critical tire... (https://mechanics.stackexchange.com/questions/32431/why-nitrogen-and-not-carbon-dioxide-is-used-in-critical-tire-applications)
P
When airing up tires using the engine compressor run the engine on fast idle. If you start airing a tire before governor cutout you can completely fill the tire with no gymnastics.
Glynn, they are adjustable, remove the top cover adjustments are there. When I replaced mine l got one preset at 130 off 100 on.
Mine is 132 or so/110. Much better brakes. And airing the tires up is easy