joint tube


Information and questions on GL1500 Goldwings (1988-2000)
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OnPapasWing
Posts: 208
Joined: Mon Mar 24, 2014 11:18 am
Location: Sterling Heights, MI
Motorcycle: 1996 GL1500SE

joint tube

Postby OnPapasWing » Thu Apr 24, 2014 7:10 am



While working on the bike I decided to take a peak at the carbs and idle screw by removing the air box. I was not able to remove the screws holding the joint tube. They were stuck pretty good. I had to reach under the the air box and remove the clamps to get the air box off. Now I still have the joint tube stuck in place. Anyone else ever have this problem? I'm wondering if the PO had it apart and didn't put it back together correctly. It has brass colored screws holding it in while the screws holding the air box to the carbs are black. Are the joint tubes available to purchase somewhere?

One other question on the subject of the carbs. What are the black cylinders that slide back and forth in the top of the carb? The one on the right got stuck when I slid it over. I was able to get it to slide back over and it seems to be OK but just wondering what this does.

Steve



OnPapasWing
Posts: 208
Joined: Mon Mar 24, 2014 11:18 am
Location: Sterling Heights, MI
Motorcycle: 1996 GL1500SE

Re: joint tube

Postby OnPapasWing » Thu Apr 24, 2014 11:56 am

FWIW, I was able to order a new joint and the right screws from a dealer.

Steve

User avatar
virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: joint tube

Postby virgilmobile » Thu Apr 24, 2014 12:14 pm

The black cylinders...
If your referring to the round black things inside the throat of the carb,there termed just that.Slides.
They must move freely,no sticking.When you rap the throttle,both should jump up to increase the air flow through the carbs and increase the amount of fuel available.
If stuck,engine performance and gas mileage suffers.
Also,don't forget,its a good idea to sync the carbs when your done.

OnPapasWing
Posts: 208
Joined: Mon Mar 24, 2014 11:18 am
Location: Sterling Heights, MI
Motorcycle: 1996 GL1500SE

Re: joint tube

Postby OnPapasWing » Thu Apr 24, 2014 12:29 pm

Thanks.

I also noticed that the o-rings that the air cleaner base sits on (on top of the carb assy) look pretty compressed. I'm going to change them out as well just for a piece of mind. Don't know what impact that will have. Maybe this winter I'll do a carb overhaul.

OnPapasWing
Posts: 208
Joined: Mon Mar 24, 2014 11:18 am
Location: Sterling Heights, MI
Motorcycle: 1996 GL1500SE

Re: joint tube

Postby OnPapasWing » Fri Apr 25, 2014 3:32 pm

They must move freely,no sticking.When you rap the throttle,both should jump up to increase the air flow through the carbs and increase the amount of fuel available.
If stuck,engine performance and gas mileage suffers.
Also,don't forget,its a good idea to sync the carbs when your done.


Will it hurt to wipe them off with carb cleaner on a rag? Or is that a waste of time? Obviously I could only get to the top of the slide so it might be a futile task. Or I could just spray them off with the carb cleaner. Thoughts?

User avatar
virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: joint tube

Postby virgilmobile » Fri Apr 25, 2014 5:06 pm

I personally never spray anything down the throat of a carb.It can wash any of the grit or bad stuff right into the engine.
If there sticking,the absolute best is remove and service.
Carb cleaner may just move the grit further into the slide area rather than out.
If they work just keep a good seal on the air filter.




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