How I Check Tire Pressure on Dually Tires

 My RV has dually tires in the rear to support the weight of the motorhome and its contents. 

I use TPMS (tire pressure monitoring system) sensors to keep track of the air pressure on the RVs tires and to alert me if there is a loss of tire pressure such as when a tire blows out or develops a big leak.

This causes access issues when you are trying to get to the TPMS sensor on the inner dually tire. I've tried valve extenders, but as you can find via Google; they tend to not be very effective and tend to come loose or damage the valve stem because of centrifugal forces and such. 

I've tried valve extenders with support brackets but with no luck.

After much trial and error and trying various methods, this is the way I do it today. 

Tools I use for this task:

22mm Tube Wrench/tubular box spanner

You will have to have the correct size for your sensors. 

I used the sensors from EEZtires

Braided air valve extension for

easy access while checking/adding air.

1-1/8" socket to remove mounting caps

from decorative wheel hub covers

First thing I have to do, is to remove the decorative wheel hub cover from the outer dually tire.  This is where the one and 1/8 inch socket comes in.  My RV came with a special wrench for this purpose but I have managed to lose it.

Only two of the caps are involved with securing the hub cover, just tap on each and find the one that sounds different. It's mate will be directly opposite.

Decorative hub cover off

As you can see in the above picture, the TPMS sensor (located at the 10:00 position) for the outer dually is easily accessible. 

The inner dually TPMS sensor however is not so accessible:

Some folks on the internet say you can access this sensor on the inner dually via the gap between the two tires, this does not work for me.  I use the 22mm tube wrench instead.  I guide the wrench onto the sensor until it snugs up around the sensor itself. Then it's just a matter of turning it counterclockwise to loose in the sensor and remove it from the valve stem. 

Next, I attached the valve extender to the valve stem so I can connect the air pump easily to the inner dually's valve stem:

Now I can add or remove air, checking with the TPMS monitor, until I have the right air pressure in the tire.

Once I am satisfied with the tire pressure in the inner dually, I remove the valve extender and use the tube wrench to remount the TPMS sensor.  You basically just put it into the wrench and then gently align the TPMS sensor to the valve stem and screw it in.

I then check the air pressure on the outer dually tire, and then I put the decorative hub cover back on.  Done!

Please comment if you've questions.  YMMV, this procedure works for me.  Not the fastest thing, or most convenient, but it works.

A Ride to Kofa NWR 's Rock Formations

 Two hours of riding, sunny and warm at almost 80°F temperatures.

I rode along US 95 southbound, using the back entrance I had recently noticed for the La Posa South LTVA.

Lots of open camping spots at the Kofa (King OF Arizona) NWR.  King of Arizona being the name of a mine back in the day.  You access them via Palm Canyon Road, a somewhat rough/gravelly road.

This wasn't the first visit to the NWR:  Uraling to the Kofa National Wildlife Refuge

The Southwestern Sojourn - Day 18: Kofa National Wildlife Refuge: Palm Canyon and 

Uraling on the Old Yuma Road

Todays riding was to see how full of campers the place was, not very.  It was also to take pics of the two more notable rock formations presented by the small mountain range within the NWR.

No hiking today, a bit warm for that.

I rode back all the way to Quartzsite to fill up Yagi's gas tank.  I returned to the campsite, again using the back entrance, and spent the rest of the afternoon resting in the gazebo.

Learning about rocks/minerals at my campsite

Thursday, February 5

Cloudy overcast skies though still warm with a high of 79° F though it felt chillier without the sun's rays shining throughout.

Friday, February 6

Sunny and warm, a mo' better day for desert solitude relaxation.

At my campsite, there was a gathering, by type, of rocks and minerals placed there by a rockhound apparently.  I took a closer look at the stuff today, using Google Gemini to help ID the stuff:

Outside "cauliflower" surface of a geode

The "inside", an Agate Geode according to Gemini 

botryoidal chalcedony according to Google

Black Tourmaline 

Jupiter Rock aka Picture Jasper

Kind of looks like a mountain scene eh?

Same stone, wet

Same stone, wet, in sunshine

I this this stone's a keeper, might even get it polished up 

Red Jasper

Aventurine, red jasper, quarts pebbles

Black Obsidian 

Stromatolite 

Tonight's sunset was mild....

Easy days near Quartzsite...

Not a lot to report, as I have not done much besides listening to audiobooks and just relaxing in the warm sun. 

Early morning lit up the far hills slightly, rendering then in shades of black.  The next three shots were taken using the bino adapter and 3x zoom.

Sunset last night:

The view this morning before the displacement:

I went for a hike this morning and as I wandered about, I spotted a really nice camping spot that had less neighbors and was easy to get to. 

Once I got back to my campsite, a hasty displacement was executed and shortly thereafter I was at the new site.  There's only one camping rig within line of sight and barely within shouting distance so I think I'm good to go for now in terms of solitude. It was getting a little crowded where I was before you see. 

Some more bino photos:

Wednesday's sunset at the new location: