Brakes on fire

[phins2]

My son ran my 1999 Ski-doo Skandic out to the fishhouse and noticed the machine smelled hot, pulled it over and opened the hood and found the brake on fire.  He threw snow on the rotor and put it out.  My question is that on taking things apart the rotor has a slight concave to it.  Shouldn't this be straight?  It appears the pistons in the calipers stuck and heated things up.  Don't know what happened.  I think I am looking at replacing both the rotor and the caliper.

[leech~~]

Brake sticking after long term storage on older sleds is pretty common. I've had it happen on at least 3 different brands of sleds every year. What I have been doing at first start up is pushing on the brake handle a bunch of times to try and get things loosened up. I have gone so far as using a screw driver at the caliper and pushing on the brake handle back and forth at the same time to make sure they are loose before heading out. Sounds like it may rebuild time for that one.

Edited January 3, 2017 by leech~~

[phins2]

Figures.  I was hoping I could salvage the rotor.  Thanks for your help.

[leech~~]

8 hours ago, phins2 said:

Figures.  I was hoping I could salvage the rotor.  Thanks for your help.

 

The rotor and caliper may still be ok but you may need a caliper valve rebuild kit.

[SpecialK]

Also you may want to take a look at the fluid reservoir.  I have heard there are ports in them that can get clogged causing the brake to stick / lock.  Some guys on a Ski Doo specific forum swear you need to clean them every year.