In my experience with Johnson or Jabsco pumps, there is a weep hole that
should tell you if the seal is leaking and this weep hole is before the
water can get to the bearing or into the engine.

Always make sure the weep hole is on the bottom of the pump housing and
never plug the weep hole.

IRC there should be two seals, one with the lip pointing in and one pointing
out. If you only have one seal, then the lip should be pointing towards the
impellor.


--
My experience and opinion, FWIW
--
Steve
s/v Good Intentions


"Garland Gray II" wrote in message
news:yEeBf.14823$CV.3437@dukeread03...
I'm interested in others' experiences in pump rebuilds.

I just rebuilt (seal and impeller) a Johnson pump that had started to leak
. "Just in case", I bought a new pump as a spare (Mack Boring said they
didn't fool with repair if one leaked, only impeller replacement), and
sure enough, before I installed the pump, I decided to replace it because
it didn't rotate smoothly.

Now a couple of months later I got around to taking the old apart to
figure what the problem. The bearing is frozen, presumably from seawater
leaking on it.

Since I've not had an impeller to fail, I'm thinking it is more important
to replace the seal every couple of years, and while at it, go on and
replace the impeller. Got to protect that bearing.

What do you think ?