Exploding Power Steering Box!!!

[D-n-Tyke]

Anyone ever have this happen to them?

Just rebuild my power steering box cause the end cap seal was leaking. Got everything all cleaned and back together. Was bleeding the system, turning lock to lock, and on about the 3rd cycle heard a loud pop and metal clank. Found part of the end cap on the ground with about a quart of brand new power steering fluid. Retaing ring and the rest of the cap is still in the box. I have never seen on of these caps explode like this.

Anyone seen this before? Anyone know where I can get a new end cap?

Ofcourse we are leaving for Hot August Nights next Saturday so this is not the most opportune time for this to happen.