Greetings;
I have a similar problem to the one detailed in the previously posted "always need to replace both water seals?". Anyone with any additional suggestions as to how to remove the inner seal would be much appreciated.
I have a pump VERY similar to the Oberdorfer shown in the photo in the above mentioned post, and unfortunately the inner seal looks even worse than that one. My pump is a Sherwood Brass Works (probalby '67 or '68). The only real difference between the Oberdorfer and Sherwood seems to be that the cover plate for the impeller is round on the Sherwood.
The pump came off the block and all the parts have been removed - except for the inner seal. Moyer Marine had the seals and grease cup and gaskets needed, Depco provided the impeller and seals. From the Moyer cooling video I had a nice base of 'how to' information and a good demo. The outer seal came off with a bit of work, but the inner seal is completely hopeless mess.
After two days of using an angled screwdriver and a variety of angles and approaches I have just about shredded what is left of the inner seal. The soft parts gave way early, and what is left of the lip continues to come off in 1mm size pieces. I resorted to trying to sneak both a pin punch and counter punch in between the wall and the seal. Both broke in the process of trying to remove them.
I don't know what has been used to seal this in place with the previous owner. Since Permatex notes Form-A-Seal can be diluted with alcohol I tried that for two days with no noticeable impact. I've tried freezing the unit, boiling the unit, and heating the pump and freezing the seal. It all has no effect.
The shredded bits of the seal are long enough to grasp with the tip of needle nose pliers, but anyone who thinks (as in the above mentioned post) that it can be pulled out that way is nuts - or Atlas. The parts are so solid that I can barely bend them, much less pry them off the wall of the pump.
I'm officially at a loss for what to do next. All I can think is to use a pen-sized torch to try to heat the seal enough to soften it and pry it loose. Obviously I'm concerned about damaging the rest of the pump, but I'm probably at risk of doing more damage with my current efforts.
Suggestions? I'd love to hear them!
Many thanks, Mick
I have a similar problem to the one detailed in the previously posted "always need to replace both water seals?". Anyone with any additional suggestions as to how to remove the inner seal would be much appreciated.
I have a pump VERY similar to the Oberdorfer shown in the photo in the above mentioned post, and unfortunately the inner seal looks even worse than that one. My pump is a Sherwood Brass Works (probalby '67 or '68). The only real difference between the Oberdorfer and Sherwood seems to be that the cover plate for the impeller is round on the Sherwood.
The pump came off the block and all the parts have been removed - except for the inner seal. Moyer Marine had the seals and grease cup and gaskets needed, Depco provided the impeller and seals. From the Moyer cooling video I had a nice base of 'how to' information and a good demo. The outer seal came off with a bit of work, but the inner seal is completely hopeless mess.
After two days of using an angled screwdriver and a variety of angles and approaches I have just about shredded what is left of the inner seal. The soft parts gave way early, and what is left of the lip continues to come off in 1mm size pieces. I resorted to trying to sneak both a pin punch and counter punch in between the wall and the seal. Both broke in the process of trying to remove them.
I don't know what has been used to seal this in place with the previous owner. Since Permatex notes Form-A-Seal can be diluted with alcohol I tried that for two days with no noticeable impact. I've tried freezing the unit, boiling the unit, and heating the pump and freezing the seal. It all has no effect.
The shredded bits of the seal are long enough to grasp with the tip of needle nose pliers, but anyone who thinks (as in the above mentioned post) that it can be pulled out that way is nuts - or Atlas. The parts are so solid that I can barely bend them, much less pry them off the wall of the pump.
I'm officially at a loss for what to do next. All I can think is to use a pen-sized torch to try to heat the seal enough to soften it and pry it loose. Obviously I'm concerned about damaging the rest of the pump, but I'm probably at risk of doing more damage with my current efforts.
Suggestions? I'd love to hear them!
Many thanks, Mick
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