I found my Bravo drive was making an unhealthy sound when running the motor on the hose:

That’s not right. Removing the top cap and having a look at the bearings, it all becomes clear:

Infortunately, the water damage also included the bearings in the gears:

So there was nothing for it other than a full strip down and rebuild. This is the pinion gear – every bearing showed some damage, and the big bearings are only available as part of a full kit of gears:

A fairly expensive round of ordering and the rebuild could start:

Carefully put it all back together using all the necessary special tools:

Major bits back in:

Checking pinion gear backlash:

And finally pressure testing it all: