Harley Davidson 54630-03A Suspension Air Pump

A simple piece that you’ll wonder how you ever did without once you get your hands on one...

(I originally posted this as a thread at HDForums.com)

Lately, it's come up about the 54630-03A suspension air pump...

I've used those portable tubular bike-tire pumps on mine with less than stellar results. Late last season, I added a backrest and had to relocate (as per the instructions) the valve - The metal was thicker, the nut was thick, getting most standard air pump valves on it was impossible - Just wouldn't go on far enough. So, even to simply *check* the air in the rear shocks, I had to remove the nut, etc., etc.

Then once I filled it, I'd lose most of the pressure just *checking* the pressure.

So today, I picked up the HD 54630-03A Suspension Air Pump.

Yes - It *is* pricey for a tiny little air pump. But it's also perfect for the job. Very small, very low volume (little danger of rupturing the existing system), bleed valve, seemingly very accurate pressure gauge.

The thing that makes this little wonder-pump worth the trouble is the lack of trouble - especially if you have a docking kit that's forced relocation of the fill valve -- Sure, I still have to remove the saddlebag - but no more removing the nut, etc.

The flexible hose screws on to the valve easily and doesn't require more than a few threads to form a seal and actuate the valve, immediately telling you (via the pressure gauge) your current pressure. It only takes several pumps to go up 5psi and the bleed valve makes fine adjustments very quick and easy. The "no loss" connector is well-named also -- Even with the very low volume of air in the system, it took several (9 or 10 if I recall) connect/disconnects to drop the pressure down visibly on the gauge. It doesn't get much better than that. And when you consider losing up to several pounds of pressure instantly using a standard tire pressure gauge, it's a no-brainer.

And if you want to keep it in your saddlebag (it really is quite small) you can use it as an efficient pressure gauge for your tires also - The gauge goes up to 60psi.

Not that I'd ever want to try to fill a tire with it...

That was the original post. So - For clarification - The reason you wouldn’t want to fill a tire with this thing is that it’s made for very low-volume work. The lines in the air shocks on HD touring bikes hold only several cubic inches of air. It takes only a few pumps to bring the pressure up considerably. Compare that to filling up a tire - That’s a lot of air. Air under pressure causes friction and heat - Lots of heat. The seals in this tiny pump would melt away to nothing in no time at all if you were putting it to hard use, such as trying to fill a tire.