i need to tomove at at take the fan off the van but cant get the big bolts behind it

Not sure what you are trying to do. Please explain better.

Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online If it is the fan hub you are trying to remove some have a left hand thread not convention direction of rotation to remove fan hub.

there is a special wrench to fit over the nut for the fan. when you have it on, have the handle facing up and hit down to the left with a hammer and it should shock it loose. Roy