M6-111 Hydraulic brake system

[DFW1963]

I have a 2015 Kubota M6-111 and my brakes won’t hold pressure I can pump them up but then they go to the floor so I have no brakes. I have replaced the master cyclinder and my pump is there a valve or something else that could be causing them to lose pressure?

 

[eserv]

I have a 2015 Kubota M6-111 and my brakes won’t hold pressure I can pump them up but then they go to the floor so I have no brakes. I have replaced the master cyclinder and my pump is there a valve or something else that could be causing them to lose pressure?

have you bled the air out of them?