identify what Brother model and get parts for tension?

My brother is 18-20 yrs old may even be older and I'm not sure of its model number, there are numbers beside the power supply listed as follows but are any of them the number I'm looking for;
n/1044/ VX2080 240v-50Hz Motor Brother model E2 0 34A.
My tension disk came apart once and I'm not too sure if I have all the pieces. I have cleaned and oiled the machine using wd40 on moving parts. When sewing the bobbin thread is birdsnesting and the top lies on the top. Can you please advise me how to fix it I look forward to your reply.