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Old 10-15-2014, 08:00 PM   #1
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Using MH compressor to inflate tires?

I am wondering if anyone uses the MH compressor to inflate tires. I need to inflate to 120 pounds. Don't think would provide enough pressure.
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Old 10-15-2014, 08:14 PM   #2
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I think it will. Now I don't know that first hand but form what I've read, lots of people have tapped into the onboard air and inflate their tires. I've heard it mentioned that you do need to get the compressor cycling (running) to get up to the higher pressures.

I'm planning to add a quick release valve and 50' of hose just for this very reason.

Robby W.
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Old 10-15-2014, 08:17 PM   #3
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I put a pressure gauge on my found out it was putting out 120psi. I use my all time. It is a little slower then using a regular compressor but it will get the job done.
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Old 10-15-2014, 08:42 PM   #4
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You will be talking to yourself by the time you get done. Buy a Porter Cable 150 lb or a craftsman 150. Doesn't take up a lot of room and works well.
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Old 10-15-2014, 09:02 PM   #5
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I do it all the time, abeit only to 110. But 120 would be no problem.
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Old 10-15-2014, 09:03 PM   #6
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you will be talking to yourself by the time you get done. Buy a porter cable 150 lb or a craftsman 150. Doesn't take up a lot of room and works well.

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Old 10-15-2014, 09:43 PM   #7
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There I s a good YouTube video on this. Your coach air system pressure varies between 75 psi and 120psi. The video shows how to put a "Tee" on the input of your inflator so you can see when the system has higher pressure than your tire. My opinion is 120 is too high of a target to use the coach compressor.
I also use mine, but I only need 10 psi.

Dan
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Old 10-15-2014, 09:58 PM   #8
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Leave the motor running. The motor produces a lot more air than the electric compressor. I would suggest getting a air chuck to you are not in front of the tire when inflating it. Occasionally RV tires blow up when being inflated. You can experience serious injury if this happens. My local Goodyear truck tire guy always stands away when he inflates the tires. I got my stand away air chuck on Amazon for under ten bucks.
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Old 10-15-2014, 10:12 PM   #9
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Our OEM Michelin tires needed 125 psi but the wheels were only rated to take 120. I tried using the onboard air and spent an hour trying to get to 120. Went and bought a 120 V Coleman tank unit that doe just fine. Changed to larger front tires that only need 105 but still use the Coleman unit.
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Old 10-15-2014, 10:17 PM   #10
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People will really love you if you are in an rv park trying to inflate to 120 with the motor running. Sure the motor driven compressor will go to 120-125 but it is the volume that is needed.
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Old 10-15-2014, 10:41 PM   #11
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...... Occasionally RV tires blow up when being inflated. .......
Do you have any stats on this? Or know where they can be found? I know that it happens, but according to what I've read the overwhelming number of cases occur during initial installation or maintenance-- overinflating to seat the bead-- or through over inflation due to lack of attention. I'd like to see numbers on random, accidental explosions. Maybe Tireman9 might chime in here.
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Old 10-16-2014, 05:44 AM   #12
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The concern of tires blowing up while being inflated is no longer a major issue. Years ago the old style split rim wheels cold blow apart if the lock ring was not in place properly. There are very few of these old wheels still around on RVS. The new rims are just overgrown car wheels.
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Old 10-16-2014, 05:56 AM   #13
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Been doing this on the last five mh's. Present mh steer tire pressure requires 120psi with no problems.
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Old 10-16-2014, 06:08 AM   #14
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This really works but it requires you do a little work too.

HOW TO: Inflate High Pressure RV Tires - YouTube
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