Originally Posted by
Rick Kirchner
Well I could sure use the thoughts from the collective brain trust here.
I purchased a NOS pinto water pump. Had an old one from a junkyard motor to practice prepping it. managed to remove the fan flange and heater port tube from both, successfully tap the heater port on both, and remove the impeller from the junkyard pump. When I tried to remove the impeller from the NOS pump, things started to go sideways. The impeller just broke in half.
I tried removing the rest of the impeller so that I might get a better grab on it with my puller, no luck.
Tried to weld a nut to it - impeller hub is cast iron though. Interestingly, weld stuck to both the cast iron and the nut, but both snapped when I inserted a bolt to try and extract the hub.
Thought about tapping the center of the hub - but it's .650, not really close to anything. I could bore it out to fit a 3/8? NPT pipe plug, and then bore and tap that for a bolt, but that's all I can come up with.
Boring likely to be a bit of a bitch, all I can really do is grab the shaft in the lathe and then use a stop to keep the pump body from rotating while I attempt to bore out the hub. Would have to use a boring bar or a mill as the pocket isn't real deep in the first place.
Thoughts? Tig braze with some bronze rod? Trying not to goober up the seals obviously.
Trying to figure out how to delete some pics so I have enough space to add a couple here.