1.6 diesel injector clamp
 

Hi All,
Can anyone tell me the torque for the injector clamp bolt on 1.6 MZ-CD engine. The garage recently replaced all 4 injectors but now 2 of the clamps have broken. I'm going to replace the clamps myself as they're easy enough to get to and don't cost much bit I can't find any info about the bolt torque.
cheers