CR32SP Brakes

[Tom Auayfuay]

I suffered brake failure this weekend. I notice that my back brakes were locking up from time to time and decided to bleed the brakes. I did this and had no pedal and was not engaging the rear brakes at all. I spoke to Larry with Team AZ and he told me there was a recall on the piston and we did a track fix (took the piston out and sanded about 2 thousands off). This worked but now back brakes had a long throw to engage the brakes so I adjusted the bias to compensate. It was qualifying and I notice right off the bat something wasn't right. Now the Front brakes locked up on me. I came in and did the track fix. Now both master cylinder were free of any locking up. One big problem, after bleeding the brakes (using a bleeder) the throw was enormous about 4" after the heat race I came in and bled the brakes again. Now the throw to engage the brakes was even worse. I tried to run the main but i litterally took me out of the seat to engage the brakes. Is this normal. Shouldn't the throw be within the rotating range of your ankle? Please help. PS my buddys CM has the same long throw. Any help would be greatly appreciated. Aren't these self adjusting cylinders?

Thank you,

Tom

[Garry Lobaugh]

I am not there to look at the situation that you describe and if Team Arizona is on site, then I'd suggest you work direct with them. If it is a defect then Larry knows the proceedure to go through.But I don't have the vision of the problem just by the email.

[Chris Lobaugh]

First, as soon as the lever on the master cylinder is engaged, the pads should move. If you continue to pull on the master cylinder lever and the pads don't move then there is air in the system. There was a problem with a batch of pistons that were oversized and we have the replacement pistons in stock.
let me know if this helps
chris

[David Fry]

I just had this exact problem this weekend.
Exactly as defined by Tom Auayfuay.

The fix for me (not sure if it's a temp fix or not as of yet), was to take some sand paper and sand down the plastic piston so it slid a little better. I dont know why this worked for a long time, then all of the sudden decided to freeze like it did.

Does this plastic piston swell over time? Once I sanded it down then it worked again. But as Tom stated. The engagemen is all the way at the back, there really is no feel to the brakes. I had to massively shim the pads to be almost on the rotor to get the brakes to engage. But even then, they only engaged after about taking up half of the pedal travel.

Should I order a new piston? Would it fix this? That's not a piece in the rebuild kit.

Thanks

[Garry Lobaugh]

Go to your dealer, have them get to the importer. There is a fix.