Front Fork Piston Rebound Spring?


Information and questions on GL1100 Goldwings (1980-1983)
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rkmason
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Joined: Tue May 13, 2014 10:30 am
Location: Austin, TX
Motorcycle: 1981 GL1100 Interstate

Front Fork Piston Rebound Spring?

Postby rkmason » Thu Jan 29, 2015 8:55 pm



I have the front fork tubes off of my '81 Interstate to replace the fork tube seals. I noticed that my forks do not have the little "rebound springs" down near the lower end of the pistons (see pic). The service manual clearly shows these rebound springs. Are these rebound springs only found on later year GL1100's? The manual is not very clear about this.
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'81 Interstate Front Fork Pistons
'81 Interstate Front Fork Pistons



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Aussie81Interstate
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1981 GL1100 Interstate (sold)
1988 GL1500

Re: Front Fork Piston Rebound Spring?

Postby Aussie81Interstate » Thu Jan 29, 2015 9:11 pm

They are possibly still in the fork lower..

rkmason
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Joined: Tue May 13, 2014 10:30 am
Location: Austin, TX
Motorcycle: 1981 GL1100 Interstate

Re: Front Fork Piston Rebound Spring?

Postby rkmason » Thu Jan 29, 2015 9:28 pm

Aussie81Interstate wrote:They are possibly still in the fork lower..

Nope, no parts still in the fork lower tubes. Besides, the service manual pics show these rebound springs being attached to the lower end of the pistons by circlips. There is nothing like that on my pistons.

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Aussie81Interstate
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Motorcycle: 1982 CX500 Turbo (restoration project)
1981 GL1100 Interstate (sold)
1988 GL1500

Re: Front Fork Piston Rebound Spring?

Postby Aussie81Interstate » Fri Jan 30, 2015 3:04 am

I cannot see where they are held in by circlips - they would normally sit in the end of the fork lower. You need to check the lowers again with a torch or give them a good pick with a long piece of wire - if you don't have them you should.

Did your forks make a noise when hitting a hard bump ?

rkmason
Posts: 67
Joined: Tue May 13, 2014 10:30 am
Location: Austin, TX
Motorcycle: 1981 GL1100 Interstate

Re: Front Fork Piston Rebound Spring?

Postby rkmason » Fri Jan 30, 2015 6:34 am

Aussie81Interstate wrote:I cannot see where they are held in by circlips - they would normally sit in the end of the fork lower. You need to check the lowers again with a torch or give them a good pick with a long piece of wire - if you don't have them you should.

Did your forks make a noise when hitting a hard bump ?

There are no parts left in the fork lower tubes, so the rebound springs must be missing. I think maybe the piston design using circlips to locate the rebound springs is 1983-only. Do the rebound springs just set loosely at the bottom of the lower tube around the OD of that "oil lock piece" ? I don't have much experience riding this Interstate yet so I can't say what it does on a hard bump.

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RBGERSON
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had every year from 75 to 83

Re: Front Fork Piston Rebound Spring?

Postby RBGERSON » Fri Jan 30, 2015 8:17 am

use parts fiche when in doubt here's a 81 fork set..seems to be a spring down there..#7

http://www.westernhonda.com/fiche_secti ... veh=132953
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

indianakid
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Re: Front Fork Piston Rebound Spring?

Postby indianakid » Fri Jan 30, 2015 2:16 pm

the spring is there........ you just cant see it from here !!!! the spring you are referring to is the rebound spring. it cushions the load when the forks "top out". if you pull down on the pipe (15) you will feel it. to get to the spring (7) requires removing the top springs (3 and 4) and the pipe (15) from the fork upper leg (6) then the spring (7) can be removed. in your picture you are looking at the upper leg / fork tube and the piston which micro fish calls the pipe.

rkmason
Posts: 67
Joined: Tue May 13, 2014 10:30 am
Location: Austin, TX
Motorcycle: 1981 GL1100 Interstate

Re: Front Fork Piston Rebound Spring?

Postby rkmason » Fri Jan 30, 2015 7:47 pm

RBGERSON wrote:use parts fiche when in doubt here's a 81 fork set..seems to be a spring down there..#7

http://www.westernhonda.com/fiche_secti ... veh=132953

OK, I finally figured it out. As indianakid says, you can't see the rebound springs from where I am looking because they are inside the stanchion tube (pipe). I have been referencing the forks exploded view drwg, but even with it I misunderstood where the rebound springs were located. It took looking at the Haynes manual page 120 today for me to finally understand. Case closed.




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