GL1200 transmission not engaging.


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bracc@aol.com
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GL1200 transmission not engaging.

Post by bracc@aol.com » Tue Jan 01, 2019 10:56 am



Folks,
I just uncovered my 1200 from underneath a canopy and started her up. She was there for about 8 months. I got her in gear and out the side gate to the driveway where I let her warm up and idle for about 20 minutes. (She started pretty much right up). Now I drop it into gear and nothing happens. She got about 30 feet to the driveway and the transmission is not engaging. Any tips?


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DenverWinger
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Re: GL1200 transmission not engaging.

Post by DenverWinger » Tue Jan 01, 2019 11:44 am

If you are sure you are actually shifting out of Neutral I'd be suspicious of the fluid return port in the clutch master cylinder being plugged, keeping the slave pumped up and not allowing the clutch to engage.

To check this you can loosen the bleeder on the clutch slave to see if there's any pressure.

There's a little tiny return port hole down in the bottom of the master cylinder reservoir you can poke a fine wire into to clear it out.

That said, if there's a blockage, it's a good indicator that your clutch fluid (and likely brakes, too) need the fluid flushed at a minimum, and maybe cylinders rebuilt.
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Re: GL1200 transmission not engaging.

Post by bracc@aol.com » Wed Jan 02, 2019 5:58 am

Mark,
Thanks for your response.
Nope, that part of the clutch is working. My future ex-brother in law says that the clutch plates are probably sticking together.
I don't know.
"Always keep your weapons and clothes where you can find them in the dark." Robert Heinlein.

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Re: GL1200 transmission not engaging.

Post by WingAdmin » Wed Jan 02, 2019 8:58 am

If the clutch plates were sticking together, the bike would stall when you put it into gear. You're experiencing the opposite - the bike isn't going into gear at all.

Try it with the bike on the center stand and the engine off. With the clutch pulled in, have a helper slowly turn the rear wheel while you try to push the shifter into first gear.

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Re: GL1200 transmission not engaging.

Post by bracc@aol.com » Wed Jan 02, 2019 6:11 pm

Dearest Wing Admin,
Thanks for your response.
On the center stand, engine running, pop it into gear and the wheel turns. I hit the brake, the wheel stops but the engine does not stall out.
"Always keep your weapons and clothes where you can find them in the dark." Robert Heinlein.

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Re: GL1200 transmission not engaging.

Post by WingAdmin » Thu Jan 03, 2019 1:12 pm

bracc@aol.com wrote:
Wed Jan 02, 2019 6:11 pm
Dearest Wing Admin,
Thanks for your response.
On the center stand, engine running, pop it into gear and the wheel turns. I hit the brake, the wheel stops but the engine does not stall out.
So what you're saying is:

- Bike on center stand
- Start engine
- Rear wheel not turning
- Pop it into gear, let out clutch
- Wheel turns
- Stop wheel with brake, wheel stops, engine doesn't stall

In this case, you have one of two problems: a severely misadjusted clutch cable (too tight), or a completely worn out clutch, which is the opposite of a clutch with stuck plates (which would never release - you have the opposite problem).

You could have issues with a clutch spring or basket, but you would be able to tell this because the clutch lever would be either soft, or wouldn't return all the way.

In any case, it sounds like a clutch job may be in your near future.

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Re: GL1200 transmission not engaging.

Post by virgilmobile » Thu Jan 03, 2019 3:37 pm

Unless I'm wrong(this has happened) doesn't the 1200 have hydraulic operated clutch?
Sure sounds like the clutch isn't fully engaged..
First suspect is a plugged pressure return port in the clutch master cylinder..
If I'm right about this,you can quick test by pulling in the clutch lever just a bit..hold it and crack open the bleeder to relieve that pressure.Test the clutch again.If it magically works... clean the master cylinder return portand flush new fluid through the system.

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Re: GL1200 transmission not engaging.

Post by bracc@aol.com » Thu Jan 03, 2019 5:36 pm

Dear Virgil,
OK, I'll give it a try.
Thanks for your response.
"Always keep your weapons and clothes where you can find them in the dark." Robert Heinlein.

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Re: GL1200 transmission not engaging.

Post by WingAdmin » Thu Jan 03, 2019 6:59 pm

virgilmobile wrote:
Thu Jan 03, 2019 3:37 pm
Unless I'm wrong(this has happened) doesn't the 1200 have hydraulic operated clutch?
Sure sounds like the clutch isn't fully engaged..
First suspect is a plugged pressure return port in the clutch master cylinder..
If I'm right about this,you can quick test by pulling in the clutch lever just a bit..hold it and crack open the bleeder to relieve that pressure.Test the clutch again.If it magically works... clean the master cylinder return portand flush new fluid through the system.
Ah, you're right, I wrote my reply at work thinking it was an 1100 we were talking about for some reason.

So yes, if it's hydraulic, then the #1 first thing to check is the return port, exactly the way you explain.

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Re: GL1200 transmission not engaging.

Post by bracc@aol.com » Sat Jan 05, 2019 10:43 pm

OK, it's been a week.
So I uncover the bike,(in the driveway, on a center stand, with a light cover (also, it had rained) :D ), start her up, put it in gear, hit the brake and the engine stalls.!!!!!!!!
So I back it down the driveway and drive it up the driveway, twice.
Turn it around and drive it around the block. I am taking it accross the Gandy Bridge tomorrow.
So what happened different. It was on the center stand, and not so for the previous 9 months. It's the only thing I can think of.
Thank you so much for your support, but it mysteriously repaired itself. Somebody must have been praying.
"Always keep your weapons and clothes where you can find them in the dark." Robert Heinlein.

bracc@aol.com
Posts: 7
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Re: GL1200 transmission not engaging.

Post by bracc@aol.com » Sun Jan 06, 2019 11:21 am

Hi,
So I go to take it across the bridge, let her idle a good 20-30 minutes, and the transmission will not engage, again.
So when it is real hot, it won't work, when it is sort of hot it will? Could I need to change the oil?
"Always keep your weapons and clothes where you can find them in the dark." Robert Heinlein.

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Re: GL1200 transmission not engaging.

Post by bracc@aol.com » Sun Jan 06, 2019 12:10 pm

Hi again,
Could it be that the fuel petcock was on for nine months and drained gasoline into the crankcase, making the oil contaminated enough to act goofy?


"Always keep your weapons and clothes where you can find them in the dark." Robert Heinlein.

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