Post by r6addicted on May 31, 2014 12:37:26 GMT -5
I'm trying to get my front brakes on my 150cc Tank Classic Scooter to work, but am at a point where I need a second opinion before going any further.
A while ago I had a leak at the front brake caliper that soaked both brake pads with brake fluid. Bought new pads and a new caliper, but for whatever reason never really bothered to put them back on the bike. Left brake hose (caliper end) with a plastic bag wrapped around it and brake fluid reservoir open to the surroundings without any brake fluid (which I believe it was what caused all my - following - issues)
Finally decided to put everything back together. After having the pads in the caliper and the caliper around the rotor with the brake hose attached to it, it was time for some brake fluid pouring. After unscrewing the bleed valve, went to squeeze the brake lever when, for my surprise, it was kinda stuck. Put a little bit more pressure into it and bam, the piston went all the way in and it wouldn't come back out, leaving me with a loose brake lever. So, here I go remove the master cylinder and open it up.
Right now, there's where the issue lays - the master cylinder. I removed it from the handle bars and disassembled it (removed brake lever, brake light switch and cylinder piston). Checked everything for damage, but couldn't really find anything. The problem is, when trying to put it back inside, the piston is having some resistance - it feels like metal sticking to metal - which I'm not sure if it's the way is supposed to be (from videos on youtube). My question is: how hard is it to reinsert the piston back into the master cylinder?
I also have to mention the fact that I did bang the piston from the spring side in order to remove it from the cylinder. Could that have deformed the piston itself? Or maybe damaged the inner surface of the cylinder?
Here's a picture of what I have:
Image on Dropbox of Master Cylinder
I appreciate your input. This will help me decide if I should buy a rebuild kit only, or if the whole master cylinder assembly needs to be replaced.
Keep on riding/tweaking.
A while ago I had a leak at the front brake caliper that soaked both brake pads with brake fluid. Bought new pads and a new caliper, but for whatever reason never really bothered to put them back on the bike. Left brake hose (caliper end) with a plastic bag wrapped around it and brake fluid reservoir open to the surroundings without any brake fluid (which I believe it was what caused all my - following - issues)
Finally decided to put everything back together. After having the pads in the caliper and the caliper around the rotor with the brake hose attached to it, it was time for some brake fluid pouring. After unscrewing the bleed valve, went to squeeze the brake lever when, for my surprise, it was kinda stuck. Put a little bit more pressure into it and bam, the piston went all the way in and it wouldn't come back out, leaving me with a loose brake lever. So, here I go remove the master cylinder and open it up.
Right now, there's where the issue lays - the master cylinder. I removed it from the handle bars and disassembled it (removed brake lever, brake light switch and cylinder piston). Checked everything for damage, but couldn't really find anything. The problem is, when trying to put it back inside, the piston is having some resistance - it feels like metal sticking to metal - which I'm not sure if it's the way is supposed to be (from videos on youtube). My question is: how hard is it to reinsert the piston back into the master cylinder?
I also have to mention the fact that I did bang the piston from the spring side in order to remove it from the cylinder. Could that have deformed the piston itself? Or maybe damaged the inner surface of the cylinder?
Here's a picture of what I have:
Image on Dropbox of Master Cylinder
I appreciate your input. This will help me decide if I should buy a rebuild kit only, or if the whole master cylinder assembly needs to be replaced.
Keep on riding/tweaking.
..BAD TO THE BONE..