Rear Shock rebuild question


Information and questions on GL1200 Goldwings (1984-1987)
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harkgold
Posts: 147
Joined: Thu Nov 03, 2011 9:19 pm
Location: Des Moines, Iowa
Motorcycle: 1984 GL1200 Interstate

Rear Shock rebuild question

Postby harkgold » Tue May 22, 2012 3:38 pm



I'm in the process of rebuilding my rear air shocks on my '84 GL1200 Interstate and I'm doing this per the step-by-step instructions found in the Honda Shop Manual.

After removing the Cir-Clip and backup plate, the instructions say to place 10 to 16 ounces of ATF fluid in a container, place the air hose in the container and then pump the shock absorber several times until the damper is filled with oil. For some reason when I pump the shock the shock is not drawing any ATF from the container. I am pumping the shock in my lever press using slow 2 1/2" to 2 3/4" strokes but not ATF is leaving the can and into the shock.

I'm assuming that I must first get some ATF fluid into the shock in order to use this same pumping action to force the seal out of the shock.

If I find I'm unable to get the shock to take on any ATF, is there any other method I can use to remove the oil seal from these shocks?

Thanks for your help!

Harkgold :?:




goldminerusa
Posts: 245
Joined: Wed Mar 07, 2012 8:20 am
Location: Southern NH, home again!
Motorcycle: 1982 gl 1100standard, 1983 1000c

Re: Rear Shock rebuild question

Postby goldminerusa » Thu May 24, 2012 7:50 pm

I`m glad you asked. I have that job coming up soon and now that i read about the problem, i`m thinking i`ll take the hose off the shock, fill the shock w/ atf and put a pipe plug in to keep the fluid in before trying to compress / press the seal out. Or maybe put a bolt with double copper washers on the banjo to do the same thing. We`ll see. Thanks for writing in.

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seabee_
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: Rear Shock rebuild question

Postby seabee_ » Thu May 24, 2012 10:29 pm

The shock will fill with oil on the up-stroke of the shock. I suggest you remove the air hose and get you a small syringe to accomplish this. Go to this link and watch the video to see how easy it will be. ;) *This is not my video nor am I in it-disclaimer.


Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

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prc
Posts: 57
Joined: Sun May 20, 2012 2:00 pm
Location: Beaverton, Oregon
Motorcycle: 82 GL1100
2011 KLR 650

Re: Rear Shock rebuild question

Postby prc » Sat Jun 02, 2012 3:51 pm

I need to fill my rear shock with oil (15 wt fork oil) after installing a new oil seal.
I see that there are two different methods shown in the tutorials I have found online.
One shows how to fill the shock from the top the other shows filling from the bottom when shock is "open"
It seems to me that these two different methods would put the oil in diffrent parts of the shock?
Does anyone know for sure which method is correct?
Thanks, prc
82 1100

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seabee_
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: Rear Shock rebuild question

Postby seabee_ » Sat Jun 02, 2012 6:55 pm

Both will work and the oil ends up in the same place. Just depends on how you choose to do it.
Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

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prc
Posts: 57
Joined: Sun May 20, 2012 2:00 pm
Location: Beaverton, Oregon
Motorcycle: 82 GL1100
2011 KLR 650

Re: Rear Shock rebuild question

Postby prc » Sun Jun 03, 2012 12:36 pm

OK, thanks.
It seems to me that re-mounting the shock and filling it with a small funnel would be the easiest method.
I see that there is a pumping method for filling the shock after mounting, I think I will try that.
prc

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seabee_
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: Rear Shock rebuild question

Postby seabee_ » Sun Jun 03, 2012 1:22 pm

Use a small syringe or turkey baster. It will make it easier to fill the shock.


Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic


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