Iveco eurocargo 100E pto?

Hi, I have a 10t iveco eurocargo which used to be a tipper but now just a flatbed we use for transporting cars, the ramps on the back used to work with hydraulic rams which were operated when the power take off (PTO) was engaged. It all worked fine but them 1 day it all stopped working! But also the brakes aren't working to great either, also air horn isnt working. the air tanks ARE filling up with air and holding air.