Welcome aboard the forum
This is the usual culprit

 

I took mine to Niehaus and had them put a newer one in from a trike conversion. At least call them.

 

That is actually a hydraulic pump. If you can hear the pump running when you activate the switch it may not be the pump but could be low on hydraulic oil. Before I had mine rebuilt it would not start working until it got to 15. After the rebuild in now starts working at 1. I sent mine to Traxtion and had it rebuilt.

 

The rubber hose from the pump to the preload adjuster on top of the shock weakens and swells thus losing effectiveness. The fluid can be topped off returning the shock to service.

 

Being that old, it's time to replace the complete assembly, IMHO!

 

Call Max at Traxxion Dynamics he will fix you up if topping off the fluid doesn't solve the issue.

 

You better sit down when he gives you the estimate 🫤

 

Replaced a unit on an 08 beginning of the year. They do fail occasionally.

 

An easy way once you have the banjo bolt off is to use one of those 5cc syringes the pharmacy gives you for liquid medicine. You may have to fill the syringe a couple times to top off the reservoir but it's very controllable. I just went through this myself.

And not to try to contradict others but that hydraulic line is not rubber. It's some form of plastic and I don't see how it could swell. I could see it maybe bursting but have yet to see anyone show evidence of one of those line that has swelled. If someone could provide proof, I will believe but so far, no one has.

 

Sometimes evidence is what you call empirical. You examine the assembly and there is no evidence of an hydraulic oil leak but there is a lack of fluid in the mechanism that adds preload. It used to work but now it doesn't but it didn't loose any oil. Where did it go? So you take it apart, push the piston back down in the bore, top it off with fresh oil and it works again from 0 to 25. You may think the hose does not swell but when you examine it on the bench it is not under pressure. When it is in the bike and pressurized it swells enough to take up the extra 10 or 15cc of oil it takes to return the assembly to service.

 

While you have it apart check the frame for cracks. The 2001 and 2002 had an issue with crackin that has a recall on it.

 

Actually 2001 thru the early production of 2004 models had potential frame issues covered under the recall but all the pre-2006 have had potential for frame cracks in other areas that were not included in the recall.

 

Thank you all for the input. Just and update on the issue.

Yes, I have tested everything. Electric to the pump is solid voltage. And has plenty of pull for amps. So it’s not electrical to it.

The pump isn’t making any effort to run. So those who have suggested the fluid level issue… I had watched things about that. The pump stopped out of the blue, it didn’t lose strength.

I have tested the pump and it’s shorted. So the motor inside is dead.

I will be looking into the places you all have suggested. I will update you all when I find out what it’s going to cost… lol.

 

Your cheapest route might be to find a trike take off. Any trike installer may have some available. You don't list where you are located but Niehaus in Litchfield Illinois might be a good place to start.

 

I believe the fitment is the same 2001-2010.
$110 on eBay.

Pardon Our Interruption...

Edit: I have no idea why the eBay link displays worded that way, but the link works on my device.

 

All shocks from 2001-17 interchange. 2018-25 use the complete entire preload assembly, with the only change being the length of the hose. So for someone needing to replace the electric pump, any used shock from 2001-2025 will work.

For 2018, the shock needed a shorter wiring harness. Insteady of changing the specification, Honda just folded up the wiring and wrapped electrical tape around it.

There is a company whose name a I can't mention that makes a manual preload adjuster for the 01-17 and 18-25. It can be the only cure for older Wing owners who can't find the source of electrical failure and don't want to spend a fortune throwing money at the bike trying to fix it.