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General Category => Maintenance => Topic started by: Scooterbob on August 20, 2010, 12:15:12 PM

Title: Fork Oil Capacity?
Post by: Scooterbob on August 20, 2010, 12:15:12 PM
I know the manual says capacity on front forks is something like 13 ounces.  Is it to be said then that only 1 quart of oil is enough to do a total rebuild?
Title: Re: Fork Oil Capacity?
Post by: RichBaker on August 20, 2010, 06:21:22 PM
Should be.....
Title: Re: Fork Oil Capacity?
Post by: carsick on August 20, 2010, 09:25:34 PM
Hey Bob,
I put a little extra in mine and still had some left in the one liter bottle. So a quart should do it. Just make sure it's trans fat free, healthier for your heart.
Doug
Title: Re: Fork Oil Capacity?
Post by: Scooterbob on August 20, 2010, 09:45:03 PM
What oil did you use Doug?
Title: Re: Fork Oil Capacity?
Post by: carsick on August 21, 2010, 12:10:57 AM
Bel Ray 15W.
Title: Re: Fork Oil Capacity?
Post by: andyb on August 21, 2010, 07:54:15 AM
(84-90 = 424mL; 91+ = 446mL)

x2.

at most, 892cc.  A quart is 946mL.

892<946
Title: Re: Fork Oil Capacity?
Post by: Mark Olson on August 21, 2010, 01:09:14 PM
the quick way is fill forks with springs out and fully compressed. add fork oil to a measurement of 130mm from the top.

If you overfill, suck it out with a turkey baster. don't forget to move the forks up and down a few times for air purge.
Title: Re: Fork Oil Capacity?
Post by: Smoothops on June 06, 2013, 08:19:26 PM
I just replaced the seals on my '87 FJ1200, but I don't know how to go about filling the forks with oil.  In order to fill with oil, the anti-dive units have to be installed, so they will have to be detached from the brake lines, which means that the front brakes will need bleeding.  I just installed the empty forks, tightened only the lower clamps.  My plan is to fill them up from the top while they are already on the bike.  Has anyone done this? is there an easier way? Thanks for your input
Title: Re: Fork Oil Capacity?
Post by: andyb on June 07, 2013, 08:09:12 AM
Should work fine.  Leave the springs out and let the front end collapse down, then go by height.  You'll have to fudge a little because it won't be sitting dead level, but you'll manage.  I'd just suggest that you'll like it better with a little extra instead of a little short.
Title: Re: Fork Oil Capacity?
Post by: Mark Olson on June 08, 2013, 02:07:54 PM
Quote from: Smoothops on June 06, 2013, 08:19:26 PM
I just replaced the seals on my '87 FJ1200, but I don't know how to go about filling the forks with oil.  In order to fill with oil, the anti-dive units have to be installed, so they will have to be detached from the brake lines, which means that the front brakes will need bleeding.  I just installed the empty forks, tightened only the lower clamps.  My plan is to fill them up from the top while they are already on the bike.  Has anyone done this? is there an easier way? Thanks for your input

If forks are empty , use the measured capacity listed in the service manual.
Title: Re: Fork Oil Capacity?
Post by: Travis398 on June 08, 2013, 04:05:14 PM
Quote from: Smoothops on June 06, 2013, 08:19:26 PM
 is there an easier way?

Yes, separate the anti-dives in the middle like this, and you won't lose fork oil or brake fluid 
(http://fjowners.com/gallery/5/486_08_06_13_3_02_08.jpeg)
Title: Re: Fork Oil Capacity?
Post by: RichBaker on June 10, 2013, 07:50:49 PM
Quote from: Mark Olson on June 08, 2013, 02:07:54 PM
Quote from: Smoothops on June 06, 2013, 08:19:26 PM
I just replaced the seals on my '87 FJ1200, but I don't know how to go about filling the forks with oil.  In order to fill with oil, the anti-dive units have to be installed, so they will have to be detached from the brake lines, which means that the front brakes will need bleeding.  I just installed the empty forks, tightened only the lower clamps.  My plan is to fill them up from the top while they are already on the bike.  Has anyone done this? is there an easier way? Thanks for your input

If forks are empty , use the measured capacity listed in the service manual.

You get better results when measuring the level. I like 130mm from the top, tubes compressed, no springs.
Title: Re: Fork Oil Capacity?
Post by: Smoothops on June 23, 2013, 06:06:44 AM
Here is a pic of the beast
(http://<a%20href="[url=http://s960.photobucket.com/user/fastbread/media/EBFS/FJ1200%20project/DSCF0088_zpsdb6b8bdd.jpg.html%5Dhttp://s960.photobucket.com/user/fastbread/media/EBFS/FJ1200%20project/DSCF0088_zpsdb6b8bdd.jpg.html%5B/url%5D"%20target="_blank"><img%20src="%5Burl=http://i960.photobucket.com/albums/ae85/fastbread/EBFS/FJ1200%20project/DSCF0088_zpsdb6b8bdd.jpg%5Dhttp://i960.photobucket.com/albums/ae85/fastbread/EBFS/FJ1200%20project/DSCF0088_zpsdb6b8bdd.jpg%5B/url%5D"%20border="0"%20alt="%20photo%20DSCF0088_zpsdb6b8bdd.jpg"/></a>)