590sn brakes

[greerco]

Hi, I have a 590sn with 4500h on it. It see alot of road driving in the city. The brakes work great but the pedal is getting low. My question is, can i adjust the pedal up at the pedal adjustment or is the pedal down because i need to change the brake discs.

Thanks

 

[gggraham]

Have you tried bleeding the brakes make sure there is no air in the system. Now pump the brakes up and hold the pedal down, if it leaks down most likely piston seals are leaking by. If your axle is overfull that would also indicate leakage past piston seals.