I have the option to buy into a teacher pension plan, but having trouble moving funds from a private firm. Advise much needed.

I have the option to buy into a teacher pension plan. My investments as of now are held by a private company. Some of my investments are in a product that will not allow me pull it all out at once, instead I have to do it over a 9 year period. So I may have to take out a loan to cover the remaining cost. will I be able to roll-over from the private company to pay for this loan- year by year, without a tax-hit> Or is there some way around this completly? Is this private company telling me everything?