| [GMCnet] Repair of Jabsco Macerator Pump [message #332576] |
Fri, 25 May 2018 20:48  |
Emery Stora
Messages: 959
Registered: January 2011
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Senior Member |
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I had a clogged macerator due to hair on the chopper blade. When I removed it I found that two of the bolts holding it together were loose. Further inspection revealed that they were brass studs that had corroded and broken just above where they screwed into the middle section of the pump. I was able to remove them by drilling from the bottom of the studs with a small drill which caught into the studs and spun them right out.
Jabsco makes a couple of service kits. The full service kit which has the plastic pump body, gaskets and impeller sells for $52.31 on Amazon. Part no: 18598-1000.
However I did not need that kit. I bought the stainless steel bolt kit 17288-1000 for $16.52 on Amazon.
This kit has 4 bolts, two long and two shorter. These replace the brass studs and acorn nuts. You just put medium strength loctite (blue) on the threads and screw the bolts in from the inlet end. They should not break or corrode like the brass studs did.
I now have a $130 macerator rebuilt for a cost of $16.52.
I have also decided to put a 1-1/2” Valterra plastic waste value between the macerator and the connection to the 3” sewage pipe. I found a good price for that on etrailer.com. This will make it much easier to remove the pump in the future as it will not be necessary to drain the holding tank. I have another Jabsco macerator pump that had broken brass studs so I also rebuilt that one with the bolt kit to carry as a spare. It will be a fast job to replace it if it gets clogged again and much less messy.
Emery Stora
77 Kingsley
Frederick, CO
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