Not sure of the location on yours (it's on the left on my 07 SG) but I wanted to mention that you shouldn't use a compressor to air it up if you haven't done it before because it can blow out the diaphrams. H-D makes a little hand pump especially for adjusting the air in the shocks. If you look at the top of your shocks you should see a fitting with a small plastic tube coming out of it, follow that tube and it should lead you to the fill valve.

 

I check the air in my shocks once a month. Tires I normally do once a week. I ride daily so I cheat and do the old boot test on the tires.

 

I check the shocks monthly, the tires every other week.

 

I've only checked my shocks a few times in the nearly two years I've had my bike. Based on my experience they only lose a psi or two in several months. I know that's not a whole lot of data points to draw any conclusions from, but now I usually only check them before a long trip.

Same with tires, I'm not nearly as **** about checking them as some folks. Usually once a month or so. They're always within a few psi. If a tire is significantly low, you'll know it when you ride.

 

I check mine about every 3 months or so. Usually has lost a pound or possibly 2 in that time.

 

Always before going on long ride. Other than that probably 2 times a month. Usually loses just a little.

 

Good advice. Don't overfill them either. The older bikes were at thier limit at 30 or 35 psi where as the newer ones can go as high as 50 psi. Best advice is to consult your owners manual see what pressure you need according to the specs in manual. You will notice a much nicer ride when you put air in them. I know my bike never had any air in the shocks until I put it there. Don't know about all dealerships but any I've been familiar with don't put air in the tires or shocks unless asked to.

 

As I was looking for an alternate location for the air tank for my FLHP air-ride seat, I figured a way to get a pressure gauge attached to the right shock. In doing this I removed the y-valve that was mounted on the left side of the bike so the air-line goes directly from the left shock to the connector on the right side. Gauge is visible just inside of the right saddle bag:


Here are the brass fittings I had PC'd black:


THis setup moved the valve to the top of the shock so it is a bit easier to get at.

 

Nice! Nothing like being able to check the pressure with just a glance.

 

Check weekly but not always needed but sometimes is .. Just did a 6,000+ mile trip to AZ and back needed to add air once in a 2 week period .. Sometimes goes a month easy without other times might lose 5-10 in a week think all depends on what kind of riding have done .. whether Solo, 2 up loaded, type of roads ridden , etc ..