Disassemble left hand switch gear


Information and questions on GL1500 Goldwings (1988-2000)
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wiredgeorge
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Disassemble left hand switch gear

Postby wiredgeorge » Tue Mar 05, 2013 11:45 am



My CB radio doesn't seem to change channels. It did when I first got my GL1500A about 4 months ago and I suspect the switch is gummed up. I read up on past issues of this sort which recommend dousing the toggle with contact cleaner and I have done this a couple times to no effect. I think I need to go inside. One guy cut his open. I am NOT wanting to do this. Has anyone opened the left switch gear and gotten into the little box above to gain access? I think it must be held on by a single screw. If so, were there any "gotchas" I need to be aware of?


wiredgeorge Texas Hill Country
1997 GL1500SE Roadsmith
2002 Triumph America
1976 KZ900A4, 1977 KZ750B2, 1978 KZ1000A, 1980 KZ1000E
Icebear 150cc trike

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WingAdmin
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Re: Disassemble left hand switch gear

Postby WingAdmin » Tue Mar 05, 2013 12:17 pm

There is no cutting involved. There are three screws to separate the halves of the left hand switch pod that encircle the handlebar. Once you have that open, the switch is held in place with another tiny screw. The switch, once removed, can be disassembled as it is held together with little plastic tabs. Be careful when disassembling as there are little springs and parts in there!

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wiredgeorge
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Re: Disassemble left hand switch gear

Postby wiredgeorge » Tue Mar 05, 2013 5:28 pm

Two M5 screws hold the halves of the left hand switch gear and then another M5 screw holds the CB tune and radio tune components that sit above. The latter screw is only accessible once you have the two halves apart. Once the two halves are apart and the 3rd screw is loose, the top of the CB tune "box" just pops off for access to the two CB switches (one tunes up and down the CB band and the other is the talk switch). Both switches are held in by a single screw and are easy to remove. I took the CB tuning switch out and cleaned it and tested and still no tuning. Since there are three wires coming off the switch with the center wire a ground (green), it is also easy to test whether it is the switch that is falfunctioning or something else. You can just turn on the CB and bridge the ground and either of the other two connections and the CB should tune. Since mine is now stuck on 30, it would not tune DOWN so I assume the problem is not in the switch which looks nice and clean at this point. Not sure where to go next in trouble shooting this issue. Any hints would be appreciated. Since the connector for the switch is buried somewhere, it would be logical to find it and open it and clean it I guess and apply some dielectric grease but the problem may be electronic and I don't know what to do in that case.
wiredgeorge Texas Hill Country
1997 GL1500SE Roadsmith
2002 Triumph America
1976 KZ900A4, 1977 KZ750B2, 1978 KZ1000A, 1980 KZ1000E
Icebear 150cc trike

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WingAdmin
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Re: Disassemble left hand switch gear

Postby WingAdmin » Wed Mar 06, 2013 12:07 pm

I would try pulling the CB out and cleaning its connector. I wouldn't suggest dielectric grease on these - fine for high-current connectors, but it's just asking for problems with audio and low-voltage low-current digital switch connections.

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wiredgeorge
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Re: Disassemble left hand switch gear

Postby wiredgeorge » Wed Mar 06, 2013 12:46 pm

Hard to get a handle on where to start trouble shooting this type problem. As I said, there are three wires coming off the back of the switch... ground and one power wire for the up and one for the down function. There was dielectric grease that had goo-ed up in the switch and I am sure didn't help anything which is now cleaned out. Unfortunately, I didn't take the time to check to see if there was current on BOTH the up and down hot wires. There should be unless my thinking is off and the switch completes the circuit to control the channel movement via this voltage. Kind of dumb on my part but the switch is easy enough to disassemble. Another thing I should have mentioned is that when I got the GL1500, I was moved the channel down just to check it; perhaps a couple months ago. I got interested last week when someone asked me if the CB worked. The channel was sitting on 1 and I couldn't get it to go up so I dosed the switch with contact cleaner and it would then move very sporadically UP only... never down so I assumed better cleaning of the switch would do the trick. The up/down switch connector doesn't terminate in the rear of the CB I think but goes into another connector and that connector is the one that connects to the back so FIRST I am going to disassemble the switch again and see if there is power on the two hot wires leading to the switch. Then if there is, will trace continuity to the back of the CB and clean connectors as suggested. If that doesn't fix the issue, it is an internal electronic problem that I won't be able fix. I will then consider replacement of the CB itself because if the switch is getting power and there is continuity back to the CB the CB will be in need of repair and it is probably more cost effective to replace with a known good unit than send it off somewhere for repair.
wiredgeorge Texas Hill Country
1997 GL1500SE Roadsmith
2002 Triumph America
1976 KZ900A4, 1977 KZ750B2, 1978 KZ1000A, 1980 KZ1000E
Icebear 150cc trike

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WingAdmin
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2007 Aspen Sentry Trailer

Re: Disassemble left hand switch gear

Postby WingAdmin » Wed Mar 06, 2013 2:37 pm

It's possible you may read very little voltage there at all - it's certainly not going to show 12 volts. It could be as little as a half a volt, up to maybe 5 volts. It's a digital switching circuit, so it will be digital levels, not a 12 volt switch.

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liquineer
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Re: Disassemble left hand switch gear

Postby liquineer » Wed Mar 06, 2013 2:54 pm

Mention of the CB made me think- I had to unplug the CB wiring, whilst I searched for the hidden rear fader connectors- I noticed that I was not getting the tuning switch to change after putting it back- might I have a similar problem?


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