clunk in rear of motor


Information and questions on GL1200 Goldwings (1984-1987)
  • Sponsored Links
chris713
Posts: 3
Joined: Mon Apr 08, 2013 9:28 pm
Location: edinburg New York
Motorcycle: 1984 goldwing aspencade

clunk in rear of motor

Postby chris713 » Mon Apr 08, 2013 9:48 pm



hi guys,ive got a 1984 1200 aspencade with 46,000 miles on it .the problem is it has a clunk in it when i engage the clutch.all of my splines are greased,my u joint is good,my bushings are good in the drive,no bad bearings,with the drive all together,the only play is in the front where the shaft goes into the motor,i can make it clunk there by rocking the tire back and forth. also when decelerating it has a pretty bad vibration unless i pull the clutch in.the clutch is good it shifts fine and cruises fine,just alot of slop on that output shaft.i would appreciate any help thanks,chris.



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: clunk in rear of motor

Postby virgilmobile » Tue Apr 09, 2013 1:20 pm

It's most likely not the output shaft...My first guess is the "U" joint splined coupler(knuckle) to the engine.
It's much softer steel than the output shaft and subject to first wear.
There should be near zero play in rotation.
Unfortunately the only way to verify is to remove the swing arm all the way to the engine and dry fit the coupler(knuckle) to the engine.Look then for the wear.
Steal-Bay shows them as a complete assembly for $15-$40.....

chris713
Posts: 3
Joined: Mon Apr 08, 2013 9:28 pm
Location: edinburg New York
Motorcycle: 1984 goldwing aspencade

Re: clunk in rear of motor

Postby chris713 » Tue Apr 09, 2013 9:39 pm

there is zero play in the u-joint splines. and the shaft i already have everything all apart there is no play except on the output shaft

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: clunk in rear of motor

Postby virgilmobile » Wed Apr 10, 2013 6:41 am

So it's tight on the output shaft splines?
There is a inspection plate to look at the drive gear.The output shaft is coupled by a torque arrestor in there.it's been a long time so I'm not sure if it can be seen from the outside.Look at the parts list or manual to get a idea how it works.
Either way,you indicate it may be inside the engine.

chris713
Posts: 3
Joined: Mon Apr 08, 2013 9:28 pm
Location: edinburg New York
Motorcycle: 1984 goldwing aspencade

Re: clunk in rear of motor

Postby chris713 » Wed Apr 10, 2013 9:53 am

yes it is tight on the shaft.if you unhook everything and grab the output shaft,you can rotate the shaft at least an inch,the only thing you can see if you take the plate off is the gears i guess my question would be have you ever heard of the torque arrestor going bad?and if so is there a way of getting it out without taking the motor out?or is the clunk something the 1200 is prone to?it really is bugging me its really excessive,a little bit would be ok but this is more than a little.

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: clunk in rear of motor

Postby virgilmobile » Wed Apr 10, 2013 10:18 am

A inch? My word that's a lot
I think when in gear mine would move maybe 1/2 of a spline.
The engine will have to come out but get a parts diagraphm first
I truly don't remember if the gear is direct to the splines or it goes through the torque arrestor first.
No I've not had one like this before.

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: clunk in rear of motor

Postby virgilmobile » Wed Apr 10, 2013 12:10 pm

When I get to the computer this afternoon I'll post more info.

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: clunk in rear of motor

Postby virgilmobile » Wed Apr 10, 2013 12:35 pm

Here's more details of the final drive..
The gear is splined to the torque coupler and the rear part of the coupler is splined to the shaft.
The big spring holds them settled together.A sudden torque will twist the coupler a little and the spring tries to recenter it.
You should be able to determine for certain if it is a problem in the final assembly by holding the large gear and turning the output shaft...There should be no play.....




Return to “GL1200 Information & Questions”




Who is online

Users browsing this forum: Google Adsense [Bot], MSNbot Media [Bot] and 5 guests