96FordExplorer

I am working on my 1996 Ford Explorer with a 4.0 V6. I thought I had a water pump leaking only to find out it was the timing cover gasket leaking. I have everything disassembled with only the harmonic balancer remaining. I have worked on small block Chevys before and the balancer had threaded holes to bolt the puller to. This balancer is about 3 inches deep to get to any holes and they are not threaded. What is the trick to removing the balancer from this engine? I have two photos of what I'm working on:





Thanks for any help

00gtr1

those holes are threaded its just that they never get used and the threads get rusty. They take a standard thread not sure the size, I always use a regular harmonic balancer puller just like a chevy.