Problems in the Peugeot 405 Diesel clutch

Hello someone who can tell me that it may be that the clutch of my 405 does not work, the cable is tension, it does not make any strange noise ... if I put it in first and go march starts, and it heads at the beginning but then the other change enter but the clutch does not work ... if they can help me and if it is complicated repair it ....

It can be an album if skating or if it is hard it is the press.