"D" rod leaking air

[mr blackstock]

Hello,

I have a FJ1100 1985, and noticed the other day that air was leaking out of the top of the "D" rod adjuster when I pushed down on the forks.  I was not sure if this would affect the fork function, so I replaced the "D" rod with a spare from another set of forks I have. 

How do you dismantle the D rod?  Is there an "O" ring I need to replace?

I figure in a year or so I will get some '88 forks and modernise the set up, but until then who can help me?

cheers, Gareth

[flips]

Hi Gareth

My 86 is doing the same thing.I haven't got around to sorting it out yet but believe it is either the o'ring on the top cap (part 14/53)  or the o'ring on the d rod assembly (part 30/69)

http://www.boats.net/parts/search/Yamaha/Motorcycle/1986/FJ1200S/FRONT%20FORK/parts.html
I haven't noticed any detrimental effects but imagine it could unbalance the fork operation.I'm sure other more experienced fj'ers will chime in.
I suspect that the nut (part 32/71) unscrews to disassemble the d rod assembly but haven't tried yet.I'm curious as to how to proceed with the d rod dis assembly procedure as well.When I get around to it i think I will change all 4 o'rings & get it over with!
Hope this helps a little !

Cheers  

Jeff P

[mr blackstock]

G'day,

After reading your post I figured there must be something simple I did not see the first time round.  On closer examination I noticed a rusty "circlip" at the top of the D rod, once I got this off the whole lot came apart to reveal an "O" ring on the inside of the screw in fork cap or top.  I took some pics to better illuminate what I am trying to say.

Once I saw the little bugger it was easy ish to get out, I think the "circlip" is needing replacement, should be a cheap generic around.





This fuzzy picture shows the location of the "circlip"

Hope this helps with your leaky D rod, seems a moderately easy fix.

cheers, Gareth

[flips]

G'Day Gareth.

Thanks for that.Those pics explain exactly what is required!

Cheers 

Jeff P