Rear Brake issue....AGAIN

[chocking]

Hello,

Getting to be that time of the year in Wisconsin where you start thinking about how we may only have 3 months left of winter...time to do necessary work to be on the road by May

 

I have for the last year battled my rear brake on my 1984 VR.

A couple years ago I replaced all lines on brakes with stainless steel...delinked them and put a MKII rear master cylinder on..Think I got it from Skydoc....greatly increased braking power

 

However..I chronically lose pressure on my rear..no loss of fluid so i obviously have an air leak...I checked all options with connections..

 

It seems to me that either my rear master needs to be rebuilt or my rear caliper is letting air in..Either way I am tired of bleeding brakes every 2 weeks.

 

Suggestions?? Where would be the best place to order a rebuild kit for the rear master and I'm wondering about maybe picking up a used rear caliper.. I did disassemble the rear caliper a few years back...I know they suggest not to..I don't think that is the problem, but it's still an option.

 

Thanks

 

Clay

[Prairiehammer]

Earl (Skydoc17) can set you up with both the rear master cylinder rebuild kit and a rebuilt rear caliper.

[Venturous Randy]

I have the same problem on my 83 and I have yet to change anything, all stock(yeah, I know). If mine sits for a while, I have to bleed my left front brake and it will take several pumps on the foot lever and I will be getting bubbles. When I bleed mine, I will loosen the bleeder valve slightly and use my finger as a check valve and pump quickly, so it pushes air through the system pretty quick.

Once I don't see bubbles, I will do the routine bleeding where you pump several times with the valve closed and then open the bleed valve.

One trick I found that works good for me is I found a turkey baster plastic tube will screw into the rear brake reservoir and it makes it a lot easier to keep it full of brake fluid while bleeding. I just make sure that it is not over full when I am done and I also always keep an 8mm wrench on the bike if I feel the brakes are dragging.

RandyA

Edited February 25, 2014 by Venturous Randy

[chocking]

That's exactly what happens to mine.. For now i have simply carried an 8mm, a small syringe and fluid...But what a hassle..and i know im not getting max braking

 

The tip of a turkey baster does work perfect for in garage work..

 

I'm just baffled as to where the air is getting in

[Ben Rollins]

Same with my 83, Rebuilding master is coming soon with fingers crossed.