hi, I have a 2012 barbarian that all four wheels intermittently bind. as its all four and intermittent I have ruled out seized callipers/ cylinders etc
I have disconnected the vacuum pipe for the 4x4 front axle under the bonnet and left both ends open and this seems to have cured the brake fault
so my question is how can the vacuum system be over pressurizing and has anyone else had this problem.

thanks in advance Trevor

vacume is vacume it is negative pressure

id be checking the flexi pipes first I think

Also possibly a complete brake fluid change