If it aint broke, fix it till it is......


Information and questions on GL1200 Goldwings (1984-1987)
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Goldenponyboy
Posts: 28
Joined: Mon Apr 29, 2019 3:28 pm
Location: vancouver bc
Motorcycle: 1985 gl1200 ltd edition

If it aint broke, fix it till it is......

Post by Goldenponyboy »



So I thought it would be a good idea to take the rear end out of my bike and lube up all the splines with fresh moly. I did this back in the winter. I drained and filled the rear end with new gear oil. The bike still has less than 40k Kms!!!!!. I never took the swing arm off as I didnt have the 4 pronged socket to get the pivot bolts out at the time. I do have the socket from park tools now. Anyways. It all went back together fine. But right after I did it I noticed that in 3rd 4th 5th when coasting there is a rattle from somewhere. It sounds like gears grinding. Under load it does not do it. So I drove like that for a while and just tried to not coast. Well a week ago I noticed that when I slow down and right before stopping there is a weird shudder rattle click noise that happens and gradually stops when the bike stops rolling. Like a rubber baseball card in the spokes of a bicycle. When I was putting it back together I did pull on the drive shaft to try and get it to come out of the rear end so that I could fit it into the ujoint. It never did come out. I wonder if I pulled too hard and now it loosened it some how? I managed to just have the ujoint flopped onto the bottom of the tube and centered the drive shaft as I slid it all forward and eventually it went into the ujoint. I am going to take it all apart again and see if the ujoint is toast. But at 40k how could that be? I have peeled the boot back but I can not see the actual joint part of the ujoint. I just see the front half. Any ideas? I have searched on here and found threads that relate to the clicky rattle noise on 4th5th coast speeds that say it is a ujoint issue. But no threads that talk about the dull shudder thud click noise when coming to a stop. I just want to ride. :(



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winguyjo
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Re: If it aint broke, fix it till it is......

Post by winguyjo »

i am quite familiar with the process of fixing something 'til it breaks. :oops:
if there was no issue there before you commenced the work, but started immediately after your work ... it's time to check your work.

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CrystalPistol
Posts: 1305
Joined: Wed Mar 10, 2010 9:07 pm
Location: Shenandoah Valley of Virginia
Motorcycle: 1997 GL1500SE/'98 Lehman Trike

Re: If it aint broke, fix it till it is......

Post by CrystalPistol »

Goldenponyboy wrote:
Fri Jun 19, 2020 3:11 pm
So I thought it would be a good idea to take the rear end out of my bike and lube up all the splines with fresh moly. I did this back in the winter. I drained and filled the rear end with new gear oil. The bike still has less than 40k Kms!!!!!. I never took the swing arm off as I didnt have the 4 pronged socket to get the pivot bolts out at the time. I do have the socket from park tools now. Anyways. It all went back together fine. But right after I did it I noticed that in 3rd 4th 5th when coasting there is a rattle from somewhere. It sounds like gears grinding. Under load it does not do it. So I drove like that for a while and just tried to not coast. Well a week ago I noticed that when I slow down and right before stopping there is a weird shudder rattle click noise that happens and gradually stops when the bike stops rolling. Like a rubber baseball card in the spokes of a bicycle. When I was putting it back together I did pull on the drive shaft to try and get it to come out of the rear end so that I could fit it into the ujoint. It never did come out. I wonder if I pulled too hard and now it loosened it some how? I managed to just have the ujoint flopped onto the bottom of the tube and centered the drive shaft as I slid it all forward and eventually it went into the ujoint. I am going to take it all apart again and see if the ujoint is toast. But at 40k how could that be? I have peeled the boot back but I can not see the actual joint part of the ujoint. I just see the front half. Any ideas? I have searched on here and found threads that relate to the clicky rattle noise on 4th5th coast speeds that say it is a ujoint issue. But no threads that talk about the dull shudder thud click noise when coming to a stop. I just want to ride. :(
If the driveshaft never came out of the final drive, you didn't pull hard enough.

Sounding to me like a U-joint.

You might be able to slip the boot off the engine case at the front of the swing arm & feel back in there with a finger. Was the U-joint "loosely" flopped or was it a little stiff. New, they are a little stiff, even after miles they don't usually "loosely" flop. If it is a U-joint, in my '85 Aspencade, it was easily removed through the swing arm tube, pushing off the engine / trans output shaft, using the driveshaft & FD as a "handle" of sorts. I think I read someplace that the Ltd's swing arm had a ring in it preventing easy removal like that, but I don't recall for sure.

A worn U-joint (rollers dry, sometimes rusty looking dust) that hasn't come apart yet will try to self center under load, like acceleration or down shift, but rattle & vibrate like crazy in coasting no load conditions, in my experiences.
Make Courtesy your "Code of the Road" …

… & Have a Safe Trip!
:)

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Goldenponyboy
Posts: 28
Joined: Mon Apr 29, 2019 3:28 pm
Location: vancouver bc
Motorcycle: 1985 gl1200 ltd edition

Re: If it aint broke, fix it till it is......

Post by Goldenponyboy »

So I ended up taking it all apart to see what was up. I didnt really find anything worn out or broken. The ujoint is in great shape and the drive shaft did pull out of the rear end with a good tug. It all looked fine so I figured all I could do is put it back together. And this is where I think I messed up the first time. I didnt follow the instructions perfectly when I put the swingarm pivot bolts back in last time. Sooo maybe the swingarm was shifted to one side? I got it all back together and took it for a 40 min ride and did not hear one noise. So hurray! On the plus side I took the time to put some lock washers on some of the sidecase, rear fender fasteners. Hopefully this will stop things from falling off. I even double nutted some bolts. Thanks for the replys to my issue. I really am loving this bike. And this forum.



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