08-13-2008, 06:56 PM
OK - I installed a radial master cylinder on my DRZ. RJ gave it to me because it was busted as delivered from an ebay auction and wouldn't draw in any fluid. I replaced the piston and it works.
Kind of.
As I use it, and not entirely predictably, more and more pressure will build up in the brake line, causing the brakes to apply themselves. This seems to be associated with use of the front brake, but can build up without being used. This is bad.
I didn't do a full flush when I changed the master because I wasn't worried about building up so much heat as to get a spongy lever at the moment. Is it possible that the air in the line is expanding and causing the brakes to apply? Alternatively, I wonder if the master cylinder is allowing extra fluid in the line?
Has anybody experienced a problem like this before? I'd rather not order a new master, as I'm looking a little bit of a bill for that, but I don't want to ride it around to "test" unlikely solutions.
And to preempt the obvious - I'll be doing a full flush tonight.
Kind of.
As I use it, and not entirely predictably, more and more pressure will build up in the brake line, causing the brakes to apply themselves. This seems to be associated with use of the front brake, but can build up without being used. This is bad.
I didn't do a full flush when I changed the master because I wasn't worried about building up so much heat as to get a spongy lever at the moment. Is it possible that the air in the line is expanding and causing the brakes to apply? Alternatively, I wonder if the master cylinder is allowing extra fluid in the line?
Has anybody experienced a problem like this before? I'd rather not order a new master, as I'm looking a little bit of a bill for that, but I don't want to ride it around to "test" unlikely solutions.
And to preempt the obvious - I'll be doing a full flush tonight.
When it comes to Ryan Jenkins, the story ends with me putting him in the wall.
2009 Speed Triple | 2006 DR-Z400SM | 1999 CBR600F4 | 1998 Jeep Cherokee
-Ginger
2009 Speed Triple | 2006 DR-Z400SM | 1999 CBR600F4 | 1998 Jeep Cherokee
-Ginger