I have a SL150Y mfg date 1999. the machine will shut off in mid cut. it will trip 2 breakers 1 is QM70 and QM80 i know that the qm80 runs the oil cooler and fan cooler i have replaced the pump motor with a brand new one. the alarms that come up is a thermal overload trip 2 (ex2551). I have replaced both qm 70 and qm 80 breakers i cannot figure out why once the qm 80 trips the qm70 will trip. I am new to this machine if anyone can help me i would appreciate it very much.