Iveco Zeta 109-14 Cilindro de freio (corrigido)

Hello, a lot of time without going through here, I have a problem with one of the brake master cylinders, specifically that of the rear axle, these cylinders go along with their corresponding lung, said cylinder drip me, I am trying to look for spare parts, I get cylinders with different caliber, there is also no reference in the old cylinder, I have thought about disassembling the cylinder and measuring the internal gauge, but I would Mount it since I tem que trabalhar com o caminhão e o sobressalente leva cerca de 10 dias para chegar. Eu disse antes que meu caminhão seja um Iveco Zeta (109-14)

Eu já o resolvo, desmontei o cilindro e o meio com o calibre, pedi o correspondente e o funcionamento.