Not sure what you are looking at here.
The 737-200 has two overheat alarms for the hydraulic system. They are both connected to sensors in the returns to the electric pumps on the B system only. There is only a low-pressure indication for the engine driven A system and no overheat indicators.
On the -300 and up series 'classic' there is an electric pump on both A and B and the QRH on these aircraft would correctly list the items you have posted Zenj, however the 732 QRH should not contain any reference to system A overheat.