Hi,
read
here; of course you should'nt change the pump, but others instructions can apply.
In short: loose clamps over pipes; loose filling cap; remove pipes; reconnect pipes and put new clamps; loose the vent on the thermostat cover and connect in with a tube to the expansion tank; refill liquid, until it reaches top level; start the engine until NONE air goes off the vent screw; close the vent screw; turn engine off; refill expansion tank; start engine until electrical ventilation starts few times; refill expansion tank.
vingiul