Front fork oil and air preasure


Information and questions on GL1500 Goldwings (1988-2000)
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1985GL1200
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Motorcycle: 1985 Honda Goldwing

Front fork oil and air preasure

Postby 1985GL1200 » Tue Jul 21, 2015 6:35 am



Hi guys, I just bought a 1998 gl1500se and was wondering if I can use the Schrader valve port to add or change fork oil. I also was wondering how much air preasure I should be running in the front shocks?



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WingAdmin
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Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Front fork oil and air preasure

Postby WingAdmin » Tue Jul 21, 2015 8:10 am

It's possible. You can unscrew the schrader valve from the fork cap and insert a long tube connected to a vacuum pump. I've seen this done with a long, thin, brass tube to ensure that it gets right down near the bottom. Fresh fork oil is poured in, the shocks are pumped up and down, and the process repeated until the fork oil sucked out is clean. The shock is then filled, and the tube is lowered just to where the top of the fork oil should be, and all excess is sucked out.

As for air pressure, it depends on the springs. If you have OEM springs, the pressure should be set depending on the load, as specified in the owner's manual. If you have Progressive springs, there should be no air pressure at all.

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Bigbiker0
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Re: Front fork oil and air preasure

Postby Bigbiker0 » Fri Jul 24, 2015 5:39 am

Why don't you use bottom plug to drain oil?
Drive safely Heaven do not exist.

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lamasue
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Re: Front fork oil and air preasure

Postby lamasue » Fri Jul 24, 2015 10:13 am

I run 6# in front forks

rpmcneal1
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Re: Front fork oil and air preasure

Postby rpmcneal1 » Fri Jul 24, 2015 10:18 am

What if you do not have an owner's manual?

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spiralout
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Re: Front fork oil and air preasure

Postby spiralout » Sat Jul 25, 2015 9:47 am

rpmcneal1 wrote:What if you do not have an owner's manual?

http://mybikemanuals.com/honda/honda-gl-owners-manuals/

rpmcneal1
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Re: Front fork oil and air preasure

Postby rpmcneal1 » Sat Jul 25, 2015 11:09 am

Thanks very much! Very useful site!

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Gunnar Már
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1983

Re: Front fork oil and air preasure

Postby Gunnar Már » Sun Jul 26, 2015 9:50 am

Hi all
Now I'm a bit confused os there a way to adjust front fork air pressure?
I have a 1992 Aspencade and I don't know how all I do is adjust the rear.

1985GL1200
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Re: Front fork oil and air preasure

Postby 1985GL1200 » Tue Aug 04, 2015 7:29 pm

My 1998 has plastic caps that you can remove, and under them are schrader valves that you use to put air in them with. but be very careful, they don't take much.




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