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199B Fork Caps

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Hi all,

I have a 199B spitting fork oil out of the vent holes in the caps. I am used to a little around the holes but these are spitting oil onto the tank and engine etc.

- Any ideas how to fix this?

- How do the caps come apart to clean the vent valve?

Thanks!

Keep your feet up!

hello ive never known this to happen may be theres to much oil in the forks. should only be 180ml in each fork. to clean the fork caps take them off there should be a tiny nut on the bottom undo it be carfull theres a small spring and ball bearing inside soak them in some wd 40 then dry spoke the vent hole with some thin wire then put them together. but my gess is theres to much oil in the forks.

  • Author

Thanks for the reply!

I changed the fork seals and put 180ml of 10w in each fork leg. I will drain and recheck. I too have never seen this before. I took the nut off the fork cap and the spring and flat disc. I can't see any ball bearing. I have swapped the caps with my other 199B so will test ride and see. Thanks again.

Mine used to spit oil out - it was the balls in the caps. Maybe you can find them because they are siezed in?

You can get new ones if needed, about £30-40 from memory..

Thanks for the reply!

I changed the fork seals and put 180ml of 10w in each fork leg. I will drain and recheck. I too have never seen this before. I took the nut off the fork cap and the spring and flat disc. I can't see any ball bearing. I have swapped the caps with my other 199B so will test ride and see. Thanks again.

hi,

happy to be corrected by those in the know but i believe if you have the washer and a spring then you have the earlier type, the ball and spring type have the countersunk screw in the top. the washer and spring type flap valve arrangement were fitted to the earlier bikes. however i would guess the problem is the same though regardless of type, it is probably too much oil

i hope this helps

hi these are 1 off my 199bs forks ive just serviced with new seals and springs and new damper parts caps are the closed typ with just the breather hole wich work well.

Hencam is right - its a thin washer - there are four galleries behind from memory..

Nice forks Bondy, you much be good a polishing!

hello smelling thanks for the comment but cant take the praise i had them polished for me. i did polish another pair of forks witch look ok but not as good as the onces above.

hello smelling the polishing cost me £75 by pitted fork in Luton. i had both yokes powder coated £120 this was for polished sliders and powder coating and door to door carriage. i had the forks hard chromed to.

Edited by bondy

  • Author

Very nice Bondy! Should look great when it's back together!

Don't think the washer and spring are old style fork caps. I have 3 B's and all are the same?? Either way new caps fixed the problem. Thanks everyone!

Keep your feet up!

just got the 199B out for a play changed the oil hear she is

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