Nissian 45h. Propain burner running hot

Have lift truck that over heats in just nearly an hr. New water pump Removed thermostat. Washed
Radiator it. New belts. Runs up well over 220 an hear it boiling an bubbling. Hadn't checked for blown head gasket. That is on the to do list next.

Nissian 45h. Propain burner running hot