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-   -   1986 Front/Rear Air-Strut Servicing (https://www.goldwingfacts.com/forums/2-goldwing-technical-forum/666589-1986-front-rear-air-strut-servicing.html)

GoldwingA1500 03-13-2019 03:27 PM

1986 Front/Rear Air-Strut Servicing
 
Hi all!

Been a few weeks since I last posted. I have a simple question with regards to air pressure. The Repair manual states that the front forks can be air-serviced with 0 - 6 psi. The rear I believe states can be serviced 0 - 47psi. But on the side of the bike with the cover off, there is a minimum and maximum air pressure label; minimum being 28psi and max 47psi.

Question:

Do I need to have the rear struts serviced at 28psi minimum? I ask because the 1986 GL1200 is a bit tall for me with those pressures (front or rear). I set the front at about 3psi to prevent bottom-out. The rear doesn't appear to bottom out on me at 0 psi. Is it okay to leave the rear at 0 psi, or do I need to service with the minimum strut pressure of 28psi?

Joe

Bike...and Dennis 03-13-2019 04:40 PM

28 to 57 PSI.

Do it any way you want. Honda probably has no reason to post those numbers.

DaveO430 03-13-2019 06:51 PM

I would run a little pressure on the rear shocks just to keep the oil from backing up the lines.

Sprocketrocket55 03-14-2019 07:12 AM

GL1200 standard air pressure spec is 0 to 57 psi. So I would say its ok to go with lower pressure as long as you are not bottoming out, it's all about the weight

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Bike...and Dennis 03-14-2019 12:12 PM

Quote:

Originally Posted by Sprocketrocket55 (Post 5828893)
GL1200 standard air pressure spec is 0 to 57 psi. So I would say its ok to go with lower pressure as long as you are not bottoming out, it's all about the weight


This is an '86. Honda's recommended pressure is 28~57 psi.
.

Sprocketrocket55 03-14-2019 02:12 PM

The GL1200 "standard" has no bags or fairing but has the same suspension system with lighter springs. The air pressure spec for that model is 0 to 57 for the rear.

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Bike...and Dennis 03-14-2019 02:52 PM

I know the standard has the 0~57 rating, but I suspect that's to allow for the decreased weight on the same springs used by the heavier models.

Still, this is about an '86 so the 28~57 is the recommended number. I'd think, after all these years, those numbers might increase to take up some of the sag.

Sprocketrocket55 03-14-2019 03:00 PM

Your original question was could you go lower pressure in the rear. So I was saying because the standard model uses the same shocks you should be able to safely go lower pressure and also depending on the load of your luggage

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GoldwingA1500 03-17-2019 10:09 AM

Quote:

Originally Posted by DaveO430 (Post 5828801)
I would run a little pressure on the rear shocks just to keep the oil from backing up the lines.

I found that out the hard way. :grin3: Now I keep at least 10 psi to help prevent oil from back-flowing into the service hose. I only weight about 178 pounds at 5.5" inches in height, so I think the 10psi should be fine.

Thanks for the input.

Joe

Screw 03-17-2019 12:02 PM

Joe I have a friend that had the same problem, we took his seat cover off and used a small belt sander and carefully trimmed away the edge on each side. It didnt change ride height but gave him about an inch on each side to the ground. While doing this he decided to add a gel center for the driver and passenger which i trimmed to fit in the foam. A good trick is to let the cover set in the sun and warm up so it stretches back easily.


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