front brake question

[buckeyemike]

cleaned/rebuilt master and both front calipers on 82gs850l. got the master primed and had it squirting out fluid at 1st banjo. All was fairly clean before I cleaned it all. when lines connected the handle gets hard and wont pump fliud out master. disconnected both calipers and still tried to pump and still would not. So I was wondering if anyone has seen this before. Is break fluid crystallized in lines, or could it be a clog in that junction where the one brake line feeds the two others? Is it for sure the brake lines or am I doing something wrong?

[harmon44e]

I have had that problem twice already. What you can do it disconnect the lines and try to blow air through, when you find the item that won't let air through you've found your problem. Sometimes what happens is the rubber comes loose in the inside and creates a flap and becomes a one way valve so make sure air blows both ways. Other times grit gathers at the smaller orifices and eventually clogs the line. I've used welding wire to break the stuff loose and then blow it out. Although the best solution would be to replace the item and if you question its ability to hold up during use don't chance it at all; brakes are not to place to go cheap (saving a dime may cost your's or someone else their life).

Things to consider is that if it clogged once it can clog again so a complete flush of the system is in order second avoid using petroleum products on brake components that are rubber. The rubber is not meant for those type chemicals and will break down adding to the problem.

[Suzuki mad]

Sounds like the lines. Do you still have the splitter on the bottom yoke (tripple tree's USA) You could split the pipe work there to identify which part is blocked.

Suzuki mad

[almarconi]

If the rubber lines have degraded to the point where pieces are coming off the inside..they should be replaced. Most manuals recommend replacement every 2 years. If you plan on keeping the bike for a while a set of SS lines would be a good investment.

[Nessism]

The lines develop a scale on the inside and should be changed. Teflon/stainless lines are a significant upgrade and are reasonably priced. Well worth the money.