yamaha anti-dive forks

[Guest]

Anyone know how to remove the collars that the air fittings are in, off the fork legs. Is this even possible? The bike is a 81' 750 seca w/anti-dive forks & this is very unfamiliar ground for me. Goal is to seperate tree's from fork legs. HELP..

[Buffalo Bill]

I have the Yamaha Genuine Service Manual, sold the bike a few years ago.
Looks like removing the fork tubes is easy, because the lower tree clamp has caps that unbolt and come off so you can remove the tube.
You don't remove the fork tubes by sliding them out as you would on most other bikes.

PS: join this forum: xjbikes.com

[Onthebar]

Thank you sir.

Thanx for your prompt response. I'm working w/a pile of unidentified parts, & I guess I assumed the triple clamps came w/the forks & other remains of the Yamaha I acquired, & after doin sum looking around here, I cant come up w/that type clamp. I got a lot of Suzuki stuff, so chances are that's what I'm tryin to use. Heres the real demise, I will not be able to use my headlight mts or my fancy lower tree cover trim w/o removing legs, is there any way you see to remove air fitting collars. I'd rather not pound the seals & wipers out if possible. Did you have the anti-dive system on your bike, if so, what is your opinion of it. I'm using it on a "backhalfed" gs1000 drag/street bike, that sits so low, I was having clearance trouble w/my 4 into 1 when on the brakes hard, so the Yamaha set up & a different pipe seemed a reasonable solution. Thanks Again.

[Buffalo Bill]

In the exploded diagram it looks like the only thing holding in the air caps are snap rings.
I rebuilt my fork tubes at least 5 years ago, and I can't remember having any problem removing the air caps. Looking at the xjbikes.com forums, I see nobody gets hitched up on removing the air caps.

Well, the anti-dive worked OK for me. What don't work is pumping up air in the front fork tubes, on the GS or any other bike of that period.
I think, the reason many bikes of that period had anti-dive must have been because they had soft fork springs, and used air pressure as an additional spring.
If you want a comfy soft front rate than restore all that stuff.

Me and many of us here have replaced the progressive rate springs with new constant rate springs, and not added any air pressure.
That's the way all of motorcycle manufacturers have gone.

[Onthebar]

Thanks for your help, I think my question was misleading. The Yamaha forks I'm attempting to use have a collar w/the air fitting in it that sits just below the upper tree, tops just have rubber plugs. I 've removed the brass fitting out of the collar which contains the Schrader valves, I can see the passage thru the leg, but there is a tube inside the upper leg, so I cant see how the collar may be fastened, if at all.