Brake fluid seeping from SMC

So I noticed some brake fluid seeping in the attached picture area.

Is this cylinder rebuild able or needs to be replaced? Also its consuming brake fluid from rear reservoir alone, right?

Should I disable LBS and ride like it or don't ride until I have fixed it?

Also is it possible dirt or debris caused it? Thanks for the help.

 

Yes it is rebuildable there is a seal kit for it.
It will be taking fluid from the rear reservoir, keep that topped up or you'll loose the back brake .Brake fluid attacks paint so dont leave it on your wheels neutralise it with water.
It really needs looking at sooner rather than later . It might be dirt in there so id pull it apart , clean , reassemble , bleed and hope for the best if it still leaks seal kit.

 

Thank you, so I just crack open two bolts for front caliper and then remove dust boot for SMC and then try to clean the area, correct?

Also, when you say bleed then I would need to bleed all front and rear or just rear?

 

The sms is on the caliper bracket so get it off and undo the brake lines and disassemble the thing. Youll need circlip pliers and check the condition of the seals and replace as necessary. Youll only need to bleed the back as the smc is on the rear circuit. Its a massive Pita though.

 

This is half correct, the rear pedal does activate the center pistons of both front calipers, so there might be a little bleeding of those two, other than that the front setup, two outer pistons on both calipers is separate and is generally fine as long as it was bled properly before hand.

 

Thanks for the clarification and think I might have to rebuild SMC after all.

Looking at the parts: https://www.partzilla.com/catalog/honda/motorcycle/2000/vfr800fi-a-interceptor/front-brake-caliper

Do I need just '27' which is possibly causing the leak? Because '9(dust boot cover)' get filled with brake fluid and the n fluid seeps from it?

Thanks for the help

 

In that case, I would just be bleeding the fronts if I would be re-building SMC and won't be touching PCV and rear wheel bleeders, right?

 

Looks more like 26 is what you need. Although the one washer looking compment in the right of the 27 box, might be something that could need replacing.

 

Unfortunately no, the SMC sends fluid to the rear, so once you open that up, then you're introducing air into the rear lines. Since the rear pedal does the two front caliper center pistons, that is now part of the mix...

 

Thanks OOTV

 

Ok, so I am leaving the SMC on the caliper.

Is there a metal ring inside the dust boot cover '9'. Also, once I remove the snap ring I should be able to pull everything out or need to undo something else too?

Can anyone please confirm it?

 

It's been some time since I've dealt with it but I recall that under the rubber boot is a snap ring, removing that allows you access to the plunger and seals. Evrything should just be able to be pulled out and replaced.

 

Thanks one last thing, I can see plunger has 2 seals(one on the top and other one on the bottom). Can those going bad cause some brake fluid seeping?

https://www.partzilla.com/catalog/honda/motorcycle/2000/vfr800fi-a-interceptor/front-brake-caliper

 

I think I pointed that out in my first post, not sure about the “lower” seal but it might have some relevance in fluid leaking but I imagine the “upper” ones would be more of a contributor

 

Thanks OOTV, will give it a shot with rebuild and see what happens

 

i know im awakening a long dead forum and may not get any response but how did this work out for you? i have an 07 with the same seeping (also foot brake is squishy on first press) maybe i can get some info before i dive down rebuilding the caliper