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Old 12-20-2018, 07:40 PM   #1
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Check Tire Pressure

Hello I'm new I have a 2018 Forest Sunseeker 2250. How do I check my tire pressure, is there a way to take off the rim? I've had it since August and the manual doesn't say. Merry Christmas and Happy New Year's to all.
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Old 12-20-2018, 07:48 PM   #2
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You shouldn't have to take off any type of hubcap or cover, the valve stem should be sticking out somewhere along the edge of the rim with a cap on it. Take off the cap put a pressure gauge on there add air if needed,
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Old 12-20-2018, 07:55 PM   #3
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Suspect your wheel covers are Dicor “wheel simulators”, like mine are. Mine “look like” the bolt on, but actually just pry off like car wheel covers. The chrome “lug nuts” on mine are fake.
Mine came with “airless” extensions and a 135 degree piece on the outer duals to enable pressure check and fill.
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Old 12-20-2018, 09:06 PM   #4
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Thank you will try
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Old 12-20-2018, 09:07 PM   #5
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Thank you
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Old 12-31-2018, 12:45 AM   #6
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I have a 2016 MBS 2400R that came with the OEM airless extensions on the inner duals. I found that I could check the air pressure with a little difficulty. For about a year the PSI held steady at 60 so I didnít worry about filling air through the extensions. Yesterday I needed to add air and no matter what I tried I could not get air to flow into the tires. What to do? Since the extensions just screw onto the regular tire valves and are not pressurized I realized I could just unscrew them. Then I used a longer truck style straight air chuck and was able to push that onto the regular tire valve through the wheels. Presto! Added air easily. I really donít know why I couldnít add air through the extensions but this turned out to be a good work around.
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Old 12-31-2018, 02:44 AM   #7
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The inner shaft on the AirFlexx extension isn’t long enough to allow the pin on your air chuck to depress the tire valve. Several of us have solved by trimming the outer part of the AirFlexx. One forum member found the issue is caused by the AirFlexx not screwing on to the valve (or, in the case of the outer dual, the 135 degree piece on the valve) far enough. Solved by trimming the inner external part of the extension.
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Old 12-31-2018, 03:07 AM   #8
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Several posts in this old thread on the AirFlexx extensions and the issue you are having (assuming your Motorhome uses the AirFlexx):
http://www.forestriverforums.com/for...-114651-5.html
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Old 12-31-2018, 06:02 PM   #9
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Well, thanks for the tip on the AirFlexx extensions. I just trimmed the extensions slightly and now they work as they should.
Thanks again!
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Old 12-31-2018, 06:31 PM   #10
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Is there any way someone can take pictures of this procedure? I've looked in my paper work and see nothing. Especially about AirFlexx extension?
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Old 01-01-2019, 12:16 AM   #11
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AirFlexx extension

Donít have a picture of the trimming process, but here is a screen shot of an AirFlexx extension. What I did was remove the valve cap and trim maybe a sixteenth inch off the threads to expose more of the center shaft. Another forum member recommended taking the extension off the wheel and trimming maybe an Eighth or a quarter inch off the other end, so it screws on further - pushing the center shaft out further. Either approach should work.
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Old 01-01-2019, 03:13 PM   #12
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Thank you very much, I bought new rv in August and the dealer is like pulling teeth to get a answer. I wish they had manuals so I could look up everything.
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Old 01-02-2019, 12:09 AM   #13
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Not sure if Forest River is still using the AirFlexx extensions. Ours is a 2012. Dbrote shows he has a 2016. Your 2018 may be different.
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Old 01-02-2019, 12:27 AM   #14
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Check Tire Pressure

Ours is a 2016 and we have them. What makes them work IMHO is that they are very light weight and if they were to break they are not part of the actual tire pressure. They can be purchased online. I just bought two new ones for $8.00 each. If you donít have any extensions they are easy to install.
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Old 01-02-2019, 01:09 AM   #15
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I also like them, but had a problem early with air loss. Believe the AirFlexx extensions whipped around while driving, and the center shaft of the extensions pressed the tire valve enough to slowly let air out. I started tying the extensions to the wheel simulators with heavy duty UV inhibited wire ties; also tie the simulators to the wheels with similar wire ties. No air loss since.
At my first tire replacement I had metal bolt-in valve stems fitted.
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Old 01-02-2019, 05:53 PM   #16
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I have the original Airflexx extensions, tried metal and braided extensions and went back to the Airflexx. I have the TST507 pass thru sensors and put the inside sensor on the wheel valve with the extension held by a rubber handhole stabilizer in the outer wheel.Works well for me with minimum air loss(maybe 5# over the summer). Really appreciate how easy the TST507 makes checking tire pressures on the road- I have one on my spare too
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Old 01-02-2019, 08:45 PM   #17
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Well, thatís interesting. Never thought of doing it that way. No problem with the rubber tire valves? How did you get the pass through onto the inner wheel? Did you then use a shorter AirFlexx extension?
Thanks for any tips about doing it this way.
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Old 01-03-2019, 01:11 AM   #18
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Thank you
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Old 01-03-2019, 07:28 AM   #19
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Quote:
Originally Posted by Dbrote View Post
Well, thatís interesting. Never thought of doing it that way. No problem with the rubber tire valves? How did you get the pass through onto the inner wheel? Did you then use a shorter AirFlexx extension?
Thanks for any tips about doing it this way.
3+years with the rubber extension stabilizers in the outer wheel holding the AirFlexx steady. No problems with the AirFlexx adding air or cchecking air pressure manually,stabilizer held extension firm. Used a heat gun to warm up stabilizer a bit they fit really tight, used original Airflex
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Old 01-03-2019, 12:38 PM   #20
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Thanks n-e-d.. How did you place the TST pass through onto the inner wheel? Did you have to remove the outer wheel, or was there a way to reach in and tighten the TST pass through onto the inner wheel valve stem?
Thanks.
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