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01-21-2014, 06:15 AM
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#1
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Junior Member
Join Date: Dec 2013
Posts: 22
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Air Tools Advice
Is it wise or legal to tie in a connection to the air supply in order to run air tools etc for tire changes. I think it would be useful but don't want to compromise the air brakes. Has anyone done this without compromising safety.
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01-21-2014, 07:02 AM
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#2
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Senior Member
Join Date: Mar 2010
Location: Fowlerville, Mich.
Posts: 606
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Depending on you model of MH you might already have an air fitting. Mostly used for inflating tires. However, it will not provide the pressure and volume of air necessary to power up and impact wrench large enough to remove the lug nuts on a pusher. It's best to subscribe to a road service to change you tires.
__________________
2000 Monaco Diplomat 40PBD
2012 Grand Cherokee Limited
2008 FatBoy, three spoiled Great Danes and a cat.
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01-21-2014, 07:03 AM
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#3
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Senior Member
Tiffin Owners Club Winnebago Owners Club
Join Date: Feb 2012
Location: Las Cruces, NM
Posts: 4,040
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If you have a Freightliner chassis, there is a customer access point to the air system in the front bay below the driver. Most people use it to air up tires so I'm not sure if it would matter whether or not you ran something else off of it. The engine should probably be at high idle when doing this. If in doubt, ask Freightliner.
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Roger & Mary
2017 Winnebago Navion 24V (Sold)
2014 Tiffin Phaeton 36GH (Sold)
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01-21-2014, 07:06 AM
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#4
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Senior Member
Join Date: Apr 2012
Location: Louisville, KY
Posts: 1,489
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I have a Freightliner and I installed a hose reel and air chuck in the front basement which a quick-connect so I can connect it to the customer port. I don't leave it connected as I don't want any sort of failure in the hose compromising my air brakes. That said, it's good for car tires, golf-cart tires, etc. The tires on the RV CAN be inflated, but you have to have someone inside watching the pressure on the gauges as the compressor can't really keep up. You could end up letting air OUT of your MH tires. And of course, the engine needs to be running.
I don't think you'd ever be able to run any sort of air tool because you're just not going to get the volume of air you need.
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Mark Anderson - FMCA 351514 - NRVIA Certified Level 2 Inspector
Louisville, KY
2011 Tiffin Phaeton 40QTH
2006 Jeep Commander
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01-21-2014, 07:12 AM
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#5
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Community Moderator
Join Date: Aug 2011
Posts: 6,186
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Quote:
Originally Posted by safehaven
Is it wise or legal to tie in a connection to the air supply in order to run air tools etc for tire changes. I think it would be useful but don't want to compromise the air brakes. Has anyone done this without compromising safety.
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Many on this forum have used a tool called a torque multiplier to easily loosen the wheel nuts. Small tool, easy to store
and requires very little effort.......internal gearing multiplies your input many times to easily break loose even stubborn or rusted lug nuts.
But as others have suggested, don't attempt unless you have a clue what you are doing.... The tires and wheels on large RV's are HEAVY !
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01-21-2014, 07:38 AM
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#6
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Senior Member
Fleetwood Owners Club
Join Date: Jun 2009
Posts: 4,031
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My MH has a air connection OEM under the front hood above the generator.
I don't think any DP has a engine air compressor that could put enough air out to run any air tool over a few seconds or much longer. Or could even run a air gun big enough to remove or put on lug nuts that take over 400 ft lb
Mine will only air a tire up to around 110 PSI.
I have had 2 Michelin zipper blow outs and just called my ERS and they took care of all the tools & labor needed for the tire change.
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01-21-2014, 11:18 AM
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#7
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Registered User
Join Date: Feb 2008
Posts: 3,607
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RV compressor puts out 120-150 PSI which is fine for air tools, but it does NOT put out enough volume to keep the pressure at that level for more than a few seconds. 450-500 ft-lb of torque for wheel nuts requires tools bigger than an RV compressor can supply. A small air sander, small buffer or alike is just fine for intermittent use, but for anything bigger, you'll need a separate air compressor.
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01-21-2014, 05:54 PM
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#8
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Junior Member
Join Date: Dec 2013
Posts: 22
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Thanks for all the great advice again. I like the torque multiplier idea. The MH is a 1996 allegro we just recently got, but it did not come with manuals. I will look for that air connection. Hopefully it has one. It is an Oshkosh chassis, and I have had a lot of trouble getting chassis info. Been relying on folks like yourselves for help and advice. Thanks again.
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