Thank you David as you can see I can now post.
I have a Warco KF VO A1S turret mill which I think is an identical design to a Myford VM-E.
I have a squealing sound coming from the spindle pulley set. The nut holding the pulley set is circular with four indents cut in the edge at 90 degree intervals. I have tried tightening/ loosening this nut with no success. Part of the difficulty is created by the fact that the machine has no spindle lock.
Has anyone dealt with this problem before as I could do with some help with this.
I have spoken to both Warco and (new) Myford but they claim that the machine is so old they no longer have any staff that can give advice.