Author Topic: Fork spings  (Read 1884 times)

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Offline abaton6

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Fork spings
« on: June 07, 2011, 09:53:27 pm »
Anyone have the fork springs replacement procedure from the old forum?  My 2k failed inspection today.  Front end too bouncy.  I got the sprrings from Murph last year.  This is my incentive.   Thanx.

Offline GF-in-CA

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Re: Fork spings
« Reply #1 on: June 07, 2011, 10:03:04 pm »
If you mean the ZG/GTR forum, it's there now.  Go to the Wiki/ FAQ area for the C10, click on "Suspension".
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Offline Slybones

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Re: Fork spings
« Reply #2 on: June 07, 2011, 10:05:54 pm »
Also look in the tech pages here.
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Offline WillyP

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Re: Fork spings
« Reply #3 on: June 07, 2011, 11:20:28 pm »
Also, keep in mind, weak springs won't make your front end bouncy, more likely lack of oil, or the oil is too thin. Do your seals leak?
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Offline abaton6

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Re: Fork spings
« Reply #4 on: June 08, 2011, 12:31:19 am »
The seals do not leak at all.  The bike has 20 k on it.  The local bike shop says after 15 k or so, most fork springs are shot.  I'll bet the oil is like water...never been changed. 

I seem to remember a a fork spring replacement thread that did not involve removing the forks as is currently posted in the ZGR forum, (excellent post by the way)   Something about a plastic tube and a turkey baster to get the old oil out?

Ring a bell to anyone?  I'm trying to do this with as little work possible, but if the forks need to come off, so be it.

Offline WillyP

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Re: Fork spings
« Reply #5 on: June 08, 2011, 01:06:17 am »
I think removing the forks is to get the oil out. No need to remove the forks to change the springs, except that if your messing with springs anyway that is a good time to replace the oil. And install emulators, too. I think someone wrote a while back about installing oil drains too. That would sure make it easier to change the oil in the future.
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Offline GF-in-CA

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Re: Fork spings
« Reply #6 on: June 08, 2011, 02:33:28 am »
As Willy says, there is a tech article about installing drain plugs

http://cog-online.org/clubportal/clubstatic.cfm?clubID=1328&pubmenuoptID=30800

Even then, it's best to remove the forks, since you'll be creating metal chips when you tap the holes.

Though not ideal, a turkey baster connected to a hose, a mighty vac, or one of those cheap pumps that attach to a drill would probably work fine to get most of the oil out. 
Gary F.

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Offline Daytona_Mike

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Re: Fork spings
« Reply #7 on: June 08, 2011, 03:16:54 am »
The local bike shop says after 15 k or so, most fork springs are shot.


Now why would a bike shop say something as silly as that?  Your springs are perfectly fine.
You need shock oil.
My seals have never leaked but I changed them anyway and still I cannot figure out where the oil  disappears too. It must evaporate away. Maybe it rots ands shrinks because it sure smells foul when it comes out.
My friends bike had less than 15k and his oil dropped down way low too , just like mine and man did it get bouncy. No leaks on his either.
New fresh oil in both bikes fixed the problem and no new springs were needed.
There is one easy way not metioned here but you would need an air gun impact driver.
With the front wheel removed  there is a 10mm hex screw holding the inner fork tube. You remove that hex screw using the impact driver and the oil drains out.
It maybe a little tricky getting the inner tube lined back up with the screw. I think I used a broom handle or some thing similar. 
You asked for the easiest way and that is it.
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« Last Edit: June 08, 2011, 03:22:57 am by Daytona_Mike »
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