Bear with me while I ramble a little here. Just try and picture it if you can, failing that have a look at yours to see what I mean.
Brake master cylinders are held on with a screw. That screw goes down through the resivoir and into a tiny little bolt which inturn is held in place by a bit of plastic built on the resivoir itself. I've turned the screw on one side to losen the rear one, no problem the screw comes off. The other screw spins. The little nut its screwed into spins and the plastic that holds the nut in place is shot. Both front and rear resivoirs have this very same problem.
So good VTR people. How the crouton can I get this resivoir cap off? The bike is a 99 reg so the earlier ones with the round front cylinder. Have a look at yours if you can and I'm open to suggestions.
My options so far are as follows: Buy new front and rear and throw the old one out. Thats looking the way I might have to go at the moment but its money I shouldnt have to spend because one part wont play ball.
Option 2. Take the whole lot and ask a local mechanic shop to fix it. Now I have new hoses, brake pads and fluid sitting here and all the time in the world so I dont really want to have to ask a professional at the cost of £50+ per hour to do something I should be able to do myself.
Brake fluid res.
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Brake fluid res.
And if the band you're in starts playing different tunes, I'll see you on the dark side of the moon.
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
Re: Brake fluid res.
Id try a small screwdriver blade wedged gently down one side of the small nut. Should give you a new purchase point as to get it open.

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Re: Brake fluid res.
tried and failed that method. That was the first idea. I've given up for tonight though so might have another stab at it tomorrow.Eclectic wrote:Id try a small screwdriver blade wedged gently down one side of the small nut. Should give you a new purchase point as to get it open.
Cheers. But I'm glad someone knows what I'm talking about with it. A friend hasnt a clue (Suzuki rider) lol. Tried explaining but he still cant figure it out.
And if the band you're in starts playing different tunes, I'll see you on the dark side of the moon.
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
- Miztaziggy
- Posts: 2451
- Joined: Fri Apr 15, 2011 9:15 pm
- Location: Tadcaster
- Miztaziggy
- Posts: 2451
- Joined: Fri Apr 15, 2011 9:15 pm
- Location: Tadcaster
Brake fluid res.
Do you mean these?

Personally I would jam a very fine pair of nose grip type pliers in there.
If that fails, get some epoxy and glue the side of it to the reservoir itself. Or at least get enough on the sides of the nut that you square it off so it cant turn in its hole. Will need to be careful not to get the epoxy in the thread mind. I guess the little nut can stay in it's little hole there anyway.
You could probably do it with a very fine wedge of metal rather than epoxy. Push it in and hold it in there hard with mole grips while you turn the screw??

Personally I would jam a very fine pair of nose grip type pliers in there.
If that fails, get some epoxy and glue the side of it to the reservoir itself. Or at least get enough on the sides of the nut that you square it off so it cant turn in its hole. Will need to be careful not to get the epoxy in the thread mind. I guess the little nut can stay in it's little hole there anyway.
You could probably do it with a very fine wedge of metal rather than epoxy. Push it in and hold it in there hard with mole grips while you turn the screw??

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- Posts: 928
- Joined: Mon Nov 08, 2010 9:58 pm
Re: Brake fluid res.
Thats the very offending bugger there. Thanks for the pic. I was sulking to much with the thing to go and take pictures! I thought about some form of glue etc but my luck with it would be to glue the thread!
I'll give the thing a good WD40 squirt tomorrow to see if I can losen the thread a little and will try various other ways to jam that bolt in place.
Having the same problem with the rear but I have a spare rear one here so I can probably just dispose of the old one and change it over.
Cheers bud.
I'll give the thing a good WD40 squirt tomorrow to see if I can losen the thread a little and will try various other ways to jam that bolt in place.
Having the same problem with the rear but I have a spare rear one here so I can probably just dispose of the old one and change it over.
Cheers bud.

And if the band you're in starts playing different tunes, I'll see you on the dark side of the moon.
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
Re: Brake fluid res.
sounds a bit tricky,
My thought:
glue will stick to the bolt as well as the captive nut making it garder to get out!!, so I would use heat [soldering iron] to reflow the plastic back round the nut.
other options could be to force the nut up into the plastic as hard as you can frm below, this will force it to bite into a fresh part of teh plastic.
or split the nut with a dremmel
or failing that I have a front master cyl and res sitting in a box from when I replaced it with CBR600 parts........spotless condition, would take £10 plus P&P [no lever as that is same as the one fitted and I can use as a spare]
My thought:
glue will stick to the bolt as well as the captive nut making it garder to get out!!, so I would use heat [soldering iron] to reflow the plastic back round the nut.
other options could be to force the nut up into the plastic as hard as you can frm below, this will force it to bite into a fresh part of teh plastic.
or split the nut with a dremmel
or failing that I have a front master cyl and res sitting in a box from when I replaced it with CBR600 parts........spotless condition, would take £10 plus P&P [no lever as that is same as the one fitted and I can use as a spare]
AMcQ
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- Joined: Mon Nov 08, 2010 9:58 pm
Re: Brake fluid res.
Cheers buddy. I'll give pretty much everything a go tomorrow but stand by your PM tomorrow evening. If I cant get the bugger off tomorrow I will take yours off you. Much appreciated. 

And if the band you're in starts playing different tunes, I'll see you on the dark side of the moon.
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
History:....CZ125....RXS100.....Lifan LF125-14F.....Suzuki GSXR750
Current:...1999 VTR FIRESTORM!
- Miztaziggy
- Posts: 2451
- Joined: Fri Apr 15, 2011 9:15 pm
- Location: Tadcaster
Re: Brake fluid res.
Yea it would be tricky not to get the bolt with the glue, but I would try it with some epoxy or something quite 'thick' so it doesnt run. If you try to get the glue onto the reservoir and stay away from the bolt, you will be able to get enough on to form a barrier to stop the corner of the nut going past and therefore letting you unscrew it.
Other option would be a hot glue gun, the bolt will turn in that, even if you get it all over the thread but it might hold the nut tight enough to stop it spinning and come undone.
But...what AMCQ says about heat isnt a bad idea...heat up the screw head with the soldering iron. Get it hot enough it starts to melt the reservoir plastic slightly and then push the bottom of the bolt upward so that the nut melts a nice little hex nut shaped hole in the bottom of the reservoir. As long as you then keep the nut pushed up into that little groove, it cant turn.
Let us know how you get on!
Other option would be a hot glue gun, the bolt will turn in that, even if you get it all over the thread but it might hold the nut tight enough to stop it spinning and come undone.
But...what AMCQ says about heat isnt a bad idea...heat up the screw head with the soldering iron. Get it hot enough it starts to melt the reservoir plastic slightly and then push the bottom of the bolt upward so that the nut melts a nice little hex nut shaped hole in the bottom of the reservoir. As long as you then keep the nut pushed up into that little groove, it cant turn.
Let us know how you get on!

Re: Brake fluid res.
Failing all of that, Rizoma do some lovely little reservoirs.
But any reservoir should fit, as long as the hose diameter is the same and the orientation of the outlet is the same, so why not have a look in your local breaker?
But any reservoir should fit, as long as the hose diameter is the same and the orientation of the outlet is the same, so why not have a look in your local breaker?
It's not falling off, it's an upgrade opportunity.