Installing a new Macerator

[Russell]

Our old 1997 Macerator has crapped out, and I'm putting a new one in on Saturday. The new one is a similar JABSCO model 18590, just like the one its
replacing, so I should not have to rearrange any plumbing. My intent is to flush the black tank with the gravity hose while the rear of the coach is
squatted down low, and then, back the rear of the coach onto the ramps so that the coach is nose down to remove and replace the macerator. I hope this
plan works to reduce the messiness of this project. Anyone have any tips or tricks for this operation?
--
Russell Keith,
1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
Onan, Dunedin, Florida

 

[Deb]

When mine died it was after I had emptied everything, so not too messy. But check the OD of the outlet on that new jabsco relative to your hose
before you install it. I found mine (the direct replacement) was just a 'titch too big for the old tube - I had to take my dremel and sand down the
lip a bit. Would have been much easier to do before I had installed and wired it all in
--
Deb McWade
Logan Lake, BC, CAN
"Li'l Sister"
'77 Kingsley, 403, EBL EFI;
TZE167V101404
It's Bigger on the Inside!

 

[Russell]

Thanks Deb, I'll check it out before bolting it down. Good advice.
--
Russell Keith,
1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
Onan, Dunedin, Florida

 

[LarryW]

While you've got apart, if you haven't already, you might want to put a gate valve in between the tanks and the macerator. That way you don't have to
empty the tanks to do maintenance. See this.

http://www.gmcmhphotos.com/photos/macerator-install/p6697.html

JWID
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

 

[Russell]

Hi Larry,
That is a good tip. I hope you and Lucy are doing well. We haven't seen you two since Tallahassee. Our coach already has two gate valves. One is
before the macerator, and the other is before the gravity dump. I still want to flush the tank before the operation. Thanks for the response.

Russell
--
Russell Keith,
1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
Onan, Dunedin, Florida

 

[emerystora]

Russell
While you have it out you definitely should put in a valve before the macerator to make it easier to get it out without making a mess.
This is especially important if you have to do it at a campground. I wrote an article for the GMCMI magazine, Page 21 of the Summer 2018 issue of GMC Vintage RVing. This can be found on the GMCMI.com http://gmcmi.com/ site.

The article was on rebuilding the macerator.

I now carry a spare macerator with me and can change it out very quickly with the use of this valve.

Emery Stora
77 Kingsley
Frederick, CO

>
> Our old 1997 Macerator has crapped out, and I'm putting a new one in on Saturday. The new one is a similar JABSCO model 18590, just like the one its
> replacing, so I should not have to rearrange any plumbing. My intent is to flush the black tank with the gravity hose while the rear of the coach is
> squatted down low, and then, back the rear of the coach onto the ramps so that the coach is nose down to remove and replace the macerator. I hope this
> plan works to reduce the messiness of this project. Anyone have any tips or tricks for this operation?
> --
> Russell Keith,
> 1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
> Onan, Dunedin, Florida
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

 

[emerystora]

Russell
While you have it out you definitely should put in a valve before the macerator to make it easier to get it out without making a mess.
This is especially important if you have to do it at a campground. I wrote an article for the GMCMI magazine, Page 21 of the

>
> Our old 1997 Macerator has crapped out, and I'm putting a new one in on Saturday. The new one is a similar JABSCO model 18590, just like the one its
> replacing, so I should not have to rearrange any plumbing. My intent is to flush the black tank with the gravity hose while the rear of the coach is
> squatted down low, and then, back the rear of the coach onto the ramps so that the coach is nose down to remove and replace the macerator. I hope this
> plan works to reduce the messiness of this project. Anyone have any tips or tricks for this operation?
> --
> Russell Keith,
> 1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
> Onan, Dunedin, Florida
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

 

[Russell]

Thank you Emery, I'll check out the article.

Russell
--
Russell Keith,
1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
Onan, Dunedin, Florida