| MACERATOR Grease impeller [message #96774] |
Sun, 22 August 2010 09:23  |
sparkienme
Messages: 5
Registered: September 2005
Location: coastal N.C.
Karma: 0
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I think I read somewhere someone put a grease fitting in the macerator impeller body. My impeller freezes up when it sets for a while and I think a shot of grease on shut down would prevent this.
Anyone have any suggestions ?
Thanks
Mike
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| Re: [GMCnet] MACERATOR Grease impeller [message #96789 is a reply to message #96785] |
Sun, 22 August 2010 10:52  |
fred v
Messages: 999
Registered: April 2006
Location: pensacola, fl.
Karma: 0
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| James Hupy wrote on Sun, 22 August 2010 10:16 |
When I bought my new Jabsco mascerator, I stuck my finger in the pump outlet
to see how supple the impeller was and withdrew a very greasy black nasty
lubricant. My guess is that a shot of silicone grease, not dino based,
probably is a good thing. Those impellers look very much like a water pump
for outboard motors, and they don't like petroleum products at all. They
kinda swell up like brake parts do when you wash them in solvent.
Jim Hupy
Salem, Or
78 Royale 403
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i don't think that was a "lubricant"!
oh, you did say a "new pump" didn't you.
Fred V
'77 Royale RB 455
P'cola, Fl
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| Re: [GMCnet] MACERATOR Grease impeller [message #96794 is a reply to message #96789] |
Sun, 22 August 2010 10:58 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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I opened the new box and the mascerator was all bright and shiny, and when I
withdrew my nitrile gloved finger from that pump orfice, that same visual
image crossed my mind, too. I wonder if our adversion to changing baby
diapers ever goes away? Inquiring minds would like to know.
Jim Hupy
Salem, OR
78 Royale 403
On Sun, Aug 22, 2010 at 8:52 AM, fred veenschoten <fredntoni@cox.net> wrote:
>
>
> James Hupy wrote on Sun, 22 August 2010 10:16
> > When I bought my new Jabsco mascerator, I stuck my finger in the pump
> outlet
> > to see how supple the impeller was and withdrew a very greasy black nasty
> > lubricant. My guess is that a shot of silicone grease, not dino based,
> > probably is a good thing. Those impellers look very much like a water
> pump
> > for outboard motors, and they don't like petroleum products at all. They
> > kinda swell up like brake parts do when you wash them in solvent.
> > Jim Hupy
> > Salem, Or
> > 78 Royale 403
>
> i don't think that was a "lubricant"!
> oh, you did say a "new pump" didn't you.
>
> --
> Fred V
> '77 Royale RB 455
> P'cola, Fl
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: MACERATOR Grease impeller [message #96817 is a reply to message #96774] |
Sun, 22 August 2010 15:21 |
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When my impeller "froze" the first time I removed and disassembled the pump while silently, to myself, cursing at the %^&$&I% who put something down the toilet that jammed it up. My surprise, nothing was jamming it at all. I reassembled it using silicone plumbers grease and it worked great - for a year or so. Then the problem reoccurred. This time I applied the silicone grease through the outlet hole. Of course you have to drain the system first - unpleasant at best but, fortunately, my system is set up to retain the original dump system.
Finally, I found that using a screwdriver in the slot in the end of the motor and giving it a counterclockwise turn even a small amount is sufficient to allow the pump to run. I'm going to try Terry's method of a quarter cup of olive oil and keep the gate valve open.
Bill Brown - '77 Buckeye Cruiser
Coshocton OH
carguybill@sbcglobal.net
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| Re: MACERATOR Grease impeller [message #97250 is a reply to message #96817] |
Wed, 25 August 2010 23:27 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
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Senior Member |
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Finally, I found that using a screwdriver in the slot in the end of the motor and giving it a counterclockwise turn even a small amount is sufficient to allow the pump to run.
_________________________________________________________
I've just completed the installation of the macerator on the GMC.
I wired a DPDT Center off switch so that up would be forward or discharge, center off and down would be reverse.
I am hoping I am being forward thinking and it would help release the pump if anything gets stuck.
Of course, if the impeller is stalled because of dried crud, the reverse most likely won't work. But I am thinking if you open the sludge valve to the Macerator and let the muck get wet for awhile, it may just release itself....
Have not used it yet but its all in place..... I too kept the old system and added a sludge valve just after the "T" to the macerator, JUST IN CASE....
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] MACERATOR Grease impeller [message #97252 is a reply to message #97250] |
Wed, 25 August 2010 23:45 |
Terrance Boyd
Messages: 38
Registered: October 2008
Karma: 0
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Larry
There is the possibility if you reverse the macerator you will spin the
shaft inside the impeller. The impeller is rubber,the hole in it has a flat
spot to match the flat on the shaft. I forced mine with a screwdriver. Had
to replace the impeller.JWHTM
Terry
On Wed, Aug 25, 2010 at 9:27 PM, Larry <slawrence111@yahoo.com> wrote:
>
>
> Finally, I found that using a screwdriver in the slot in the end of the
> motor and giving it a counterclockwise turn even a small amount is
> sufficient to allow the pump to run.
> _________________________________________________________
>
>
> I've just completed the installation of the macerator on the GMC.
> I wired a DPDT Center off switch so that up would be forward or discharge,
> center off and down would be reverse.
>
> I am hoping I am being forward thinking and it would help release the pump
> if anything gets stuck.
>
> Of course, if the impeller is stalled because of dried crud, the reverse
> most likely won't work. But I am thinking if you open the sludge valve to
> the Macerator and let the muck get wet for awhile, it may just release
> itself....
>
> Have not used it yet but its all in place..... I too kept the old system
> and added a sludge valve just after the "T" to the macerator, JUST IN
> CASE....
>
>
> --
> Gatsbys' CRUISER :d
> 74 GLACIER X, 260
> 455/APC/4 bagg'r(ver3)
> Remflex Manifold gaskets
> _______________________________________________
> Purchased 08-18-04
>
> _
>
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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| Re: [GMCnet] MACERATOR Grease impeller [message #97254 is a reply to message #97252] |
Thu, 26 August 2010 00:04 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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I second Terry's concern. As the impeller turns, its vanes "lean back" in
the eccentric housing, so that some of the vanes are always in a "wrong way"
/ "locked up" position when you reverse the direction. One might get away
with forcing a new, flexible, impeller backward, but as they age and take a
set, they'll easily break off if turned backward.
Ken H.
On Thu, Aug 26, 2010 at 12:45 AM, Terrance Boyd <newtent@gmail.com> wrote:
> Larry
>
> There is the possibility if you reverse the macerator you will spin the
> shaft inside the impeller. The impeller is rubber,the hole in it has a flat
> spot to match the flat on the shaft. I forced mine with a screwdriver. Had
> to replace the impeller.JWHTM
>
> Terry
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] MACERATOR Grease impeller [message #97331 is a reply to message #97254] |
Thu, 26 August 2010 14:58 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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Well, ok....
I thought I was thinking ahead but I guess I was thinking ahead to get a new poo wheel.
Thanks for the warning, I suppose I need to cripple that option.
Gatsbys' CRUISER 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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