Air Compressor


Information and questions on GL1500 Goldwings (1988-2000)
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mtn_boy1
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Air Compressor

Postby mtn_boy1 » Sun Sep 08, 2013 7:30 am



A month or so ago, I used the air compressor to pump up my son's bicycle tire. It did fine. Yesterday I wanted to increase the shock pressure to ride 2 up. When I checked the pressure, it said 82 and the compressor wouldn't run. I keep my pressure at 42-45. I know 82 isn't right. I remember wingadmin talking about the process for using the air hose. I thought he said the outlet air would not work if the engine was running. When I pumped up my son's tire, the outlet ONLY worked if the bike was running. It would not work on ACC. Did I screw something up? I checked the fuse. I don't understand why the pressure gauge is reading so high, which I know isn't right. I have briefly pushed the decrease button to see if I can hear air escaping, nothing. What have I done and what do I need to do?


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dingdong
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Re: Air Compressor

Postby dingdong » Sun Sep 08, 2013 8:30 am

Sounds like you are referring to two different situations. When using the air hose to air up a tire the compressor should only work in the (P) park position. Therefore engine off. Adjusting the Shock pressure is done by: Bike must be on on center stand, key in (on, acc, or p) press and hold (p check) while pressing (increase or decrease). It sounds like you just increased the shock pressure while trying to use the outlet valve.
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Re: Air Compressor

Postby mtn_boy1 » Sun Sep 08, 2013 9:12 am

That would make sense if it would now decrease pressure by pushing the p check and the decrease button. But it doesn't. After I pumped up the bike tire, the shocks were at 45 lbs. When I pushed the p check today, to get ready to increase the pressure, it showed 82. It won't increase or decrease. The pump does not run in any ignition position. I'm stumped. Maybe one has nothing to do with the other. Maybe something, the pump or the switching valve, just went bad. I don't understand the '82'.
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dingdong
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Re: Air Compressor

Postby dingdong » Mon Sep 09, 2013 9:05 am

Here is a thread addressing a similar problem of compressor not working. viewtopic.php?f=6&t=10743
Tom

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Re: Air Compressor

Postby mtn_boy1 » Sun Feb 23, 2014 1:56 pm

Re: '94 GL1500A air compressor not working

Postby WingAdmin » Mon Apr 09, 2012 1:32 pm
I had the same problem when I got my 1500, and I seem to remember that it turned out that running the compressor to the outlet sourced power through a different fuse than running the compressor to the suspension. When I replaced the applicable fuse, it fixed the problem.

Read more: viewtopic.php?f=6&t=10743#ixzz2uAmjFaad

This was it. It was the 10 AMP fuse labeled parking lights. As soon as I found it and replaced it, the compressor worked like it should.
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robb
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Re: Air Compressor

Postby robb » Sun Feb 23, 2014 2:28 pm

dingdong wrote:Bike must be on on center stand


I know the owners manual said " Preparation: Place the motorcycle on it's center stand on level ground." But even with 30psi in shocks my tire is off the ground about an inch when on the center stand. Makes it rather difficult to achieve desired ride height. Only thing needed is power on, side stand up and tranny in neutral. It will even operate with the bike rolling if the tranny is in neutral. This is how I got my wife happy, adjusting while rolling down a long hill that would maintain speed.

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Re: Air Compressor

Postby WingAdmin » Sun Feb 23, 2014 9:34 pm

robb wrote:
dingdong wrote:Bike must be on on center stand


I know the owners manual said " Preparation: Place the motorcycle on it's center stand on level ground." But even with 30psi in shocks my tire is off the ground about an inch when on the center stand. Makes it rather difficult to achieve desired ride height. Only thing needed is power on, side stand up and tranny in neutral. It will even operate with the bike rolling if the tranny is in neutral. This is how I got my wife happy, adjusting while rolling down a long hill that would maintain speed.


There's a good reason for it to be on the center stand to adjust the rear suspension: think of the air as part of the preload. When the rear wheel is dangling in the air, the only air pressure is whatever you have pumped into it.

When the wheel is on the ground, the weight of the bike is compressing that air, which means the reading will be MUCH higher. The calibrated settings are for when the rear suspension has no load on it. It's possible (I don't know for sure) that with the weight of the bike on the rear wheel, the pressure may be high enough to be over the design output of the compressor.

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robb
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Re: Air Compressor

Postby robb » Mon Feb 24, 2014 12:34 pm

If you are 6 foot tall it might be that easy. As relating to myself, at 5' 7.5" and 175 pounds, most of my ride is with 10 psi in rear. Only way I can place bike on center stand is to place bike on side stand and increase rear to 50-55 psi rear. AT that point the rear wheel is better than .25" off the ground when on center stand and my feet about 3" off ground. A 50 psi reading under load is within 1 psi reading with load removed. Built a platform to support my feet and at 71 psi it walks off center stand. Highest observed is 77 and it takes that to get it onto my trailer. The 14.5" trailer tires are rated at 100 psi and the wing can easily do 90 psi. Pump might go out tomorrow, but I'm not worried since at my weight it does ride OK with no air in the rear.

The max of 57 psi is rated for a max load of 408 pounds plus bike, don' mean that is all it can do.

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Fatwing Chris
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Re: Air Compressor

Postby Fatwing Chris » Tue Feb 25, 2014 6:35 pm

There is a way to run the compressor with the bike running.You have to dump all the pressure out of the rear shock first and then hit the increase button.It will then fill whatever you have attched to the hose first.Never tried it myself,but there are lots of threads about doing it this way on other sites.Not a good idea to run it too long at a time though.Spec is in the handbook.
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dingdong
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Re: Air Compressor

Postby dingdong » Wed Feb 26, 2014 8:02 am

robb wrote:If you are 6 foot tall it might be that easy. As relating to myself, at 5' 7.5" and 175 pounds, most of my ride is with 10 psi in rear. Only way I can place bike on center stand is to place bike on side stand and increase rear to 50-55 psi rear. AT that point the rear wheel is better than .25" off the ground when on center stand and my feet about 3" off ground. A 50 psi reading under load is within 1 psi reading with load removed. Built a platform to support my feet and at 71 psi it walks off center stand. Highest observed is 77 and it takes that to get it onto my trailer. The 14.5" trailer tires are rated at 100 psi and the wing can easily do 90 psi. Pump might go out tomorrow, but I'm not worried since at my weight it does ride OK with no air in the rear.

The max of 57 psi is rated for a max load of 408 pounds plus bike, don' mean that is all it can do.



Hmmm? If I put max pressure 57 lbs in the shock with bike on the center stand the pressure goes up to 80 + lbs with a 2 up load. The max pressure is a safety rating to prevent damaging the shock.
Tom

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robb
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Re: Air Compressor

Postby robb » Wed Feb 26, 2014 10:07 am

Left hospital after 10 days last night. Brother-in-law showed up this morning, 6'3" and 235 pounds. Took bike and lowered air to 0 then back to 50 while on center stand. Once off stand the reading was still at 50, but after 5 minute warm up in a 60 degree garage the reading shows 49. Lowered to 35 psi then placed on stand, reading was 34. Not enough difference to worry about.

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SgtCharlie
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Re: Air Compressor

Postby SgtCharlie » Thu Apr 03, 2014 8:38 pm

What pressure setting do you use for "Max" rear suspension when you are sitting on the bike? I've had mine up to about 90psi with a passenger, which drops back down to 50-60 when they get off. But I've never heard what the max rating is on the GL1500... Mines a '95.

Also, I'm shorter than some at 5'7" (and heavier at 190) so when I ride solo I like to ride at around 15-20 psi for more foot/pavement contact at stops (less tippy-toeing); any less and it bottoms out with any kind of bump. I'm looking at dropping $700 on a new low profile Road Sofa seat from Saddleman. (I know that this is the wrong topic for this question, but does anyone have any other recommendations before I drop that kind of cash?)

Thanks, God Bless and keep the shiny side up!

Read more: viewtopic.php?f=16&t=21152&p=117054#p117054#ixzz2xsQn1oUV
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ct1500
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Re: Air Compressor

Postby ct1500 » Thu Apr 03, 2014 10:40 pm

Certain years had different foam height in the saddle if not mistaken.

Or shave some foam out for a lower height.
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wing in atlanta
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Re: Air Compressor

Postby wing in atlanta » Fri Apr 04, 2014 1:25 am

I had mean city cycles redo my seat. much more affordable. They can add foam and lower seat height.

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Re: Air Compressor

Postby robb » Fri Apr 04, 2014 8:34 am

SgtCharlie wrote:I'm looking at dropping $700 on a new low profile Road Sofa seat from Saddleman.


I tested another riders Road sofa and found it not much different than my Travelcade seat. Dramatic difference with Corbin, 1.5 to 2 inch lower. I'm looking for a used unit, $800 is rich at this time.




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