| Replacing black tank on a rear bath Birchaven [message #212429] |
Wed, 26 June 2013 22:29  |
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Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
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Senior Member |
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Hi. My black tank has given up the ghost and I'm getting set to install the replacement I bought from Applied. The holding tank configuration that Coachmen came up with for the rear bath Birchaven was innovative, and by that I mean odd. I wasn't sure if a PO had reconfigured things when he put in the macerator, but from perusing the photo site, nope, it's a Coachmen original.
I would appreciate some input, warnings, and hell, encouragement couldn't hurt! I'm doing the work in Phoenix on gravel and it's supposed to be up around 115F this weekend, so the encouragement may be the most important part. 
My questions:
- is it necessary to disassemble the toilet riser box to replace the black tank? I read on the forum that people used a homebrew wood "wrench" to unscrew the toilet flange, but as best as I can see (trying to see the vent line from the small gap in the side of the riser box/vanity and floor) the vent line appears to be glued the whole way and takes some tight bends as it snakes around the poop chute inside the riser box. I ended up cutting the waste and vent lines flush with the top of the old tank to remove the tank, and would prefer to not have to open up the riser box if it's avoidable.
- The waste and vent lines are not perpendicular/plumb - they're tilted with the bottoms closer to the front of the coach, ~5-7 degrees. If both waste and vent tails can be removed without taking apart the riser box, will direct replacement (reinstalling the lines tilted) create problems with the rubber grommet tank seal?
- Mike Miller had posted a couple of pictures of his reconfiguration in progress, and mentioned he'd post pictures of the completed installation when he got a round tuit. Mike, if you're reading this, are those after images posted? I couldn't find them and I would like to see more.
- I'm going to be rotating the new tank so the outlet is on the driver's side which will consolidate a lot of the plumbing, allow the grey tank to flush out the black tank, and shift the black tank a couple or few inches towards the drivers side. I'm going to be redoing my exhaust, against my wallet's better judgement, and I'm wondering if shifting the tank over will improve my chances of getting a single rear muffler installed. Has anyone installed a single rear muffler in a 23' rear bath Birchaven?
Thanks in advance for any pointers.
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
[Updated on: Thu, 27 June 2013 00:01] Report message to a moderator |
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