That´s AMAZING!!
The PMDG 737 has overheating of the hydraulic pumps simulated? Awesome!
What circumstances can lead to the overheating of one hydraulic pump? Too low pressure on the other two hydraulic circuits so one pump has do move the ailerons alone?
With failures off, the most boring setting in flight sim because nothing interesting ever will happen, no system should get damaged or off. It is probably a bug in the PMDG737.