Re: 56 Firestone 5hp cooling problem

[frankr]

A Firestone would only have the main pump housing and impeller, with a different pump cover. So blocking off the bailer housing does not apply.

As for why it does not work, that is hard to say from a distance. But it is important that the seals all be in good condition. That includes the o-ring under the cover. The fact that those pumps are up so high was their downfall. They need to work well enough to lift the water to establish a prime. It would be great if it were underwater, but that usually is not the case. But it certainly helps if the water level is up somewhere close to the pump.