New holland 555e backhoe torque converter

I have a new holland 555e backhoe that i installed a factory reman shuttle and reman torque converter. Started the machine for the first time and can't get any movement. Installed some gauges and I have no torque converter pressure or system pressure on the shuttle. It's full of oil,, I think I can't get the transmission pump to prime or the torque converter to fill. Anyone know how to prime one of these without taking it back apart

New holland 555e backhoe torque converter