We are putting the C4 toilet out of the Swift Challenger that we bought to break, and noticed that the original installation had a loo roll compartment behind the toilet, with a hinged flap for access.
Is this using a space required for the toilet to be used anyway, or just to position the toilet away from the rear wall?
We are awaiting templates from Thetford BV before we start knocking holes in the side of the trailer.
Thanks for that, Mike, we do have the download already, but appreciate the thought.
We've carried on, pending arrival of promised templates from Thetford.
The new wall on the left of the kitchen unit was put in on the weekend and the whole structure finally screwed into place against the right-hand wall and the bulkhead behind, plus the new wall.
The vertical piece to fit the C4 to was put in tonight, we used a spare piece of GRP/Plywood and 3/4" angles each side to fix it to the walls. There are cut-outs in the new wall and the new kitchen wall for the water hoses and gas pipe going to the Carver water boiler.
We have raised the C4 up off the floor by 15mm as we have the side rave extrusion outside the body and the cassette access door is going to come fairly close to it.
We are not cutting the aperture until the templates are here and we can see exactly where the hole will come. We can play around with positions at present, but once that hole is cut we are fixed!
Tomorrow we are fitting the 30mm extrusion over the bulkhead seam, and the screw/bolt heads will be this side, not in the engine half.
Note that the bathroom is deliberately about 2" wider than in the Swift, we want a bit more elbow/curtain room!
More progress, although on many fronts so not a lot of visually interesting stuff.
Got the water heater ready for fitting, it's a Carver balanced flue, gas or 240V mains or both. Got to cut a hole in the side, plus there is the water inlet and filter to go next door to it. We've decided to fit a new filter assembly as the old one was a bit drab and we don't want to pick anything nasty up :shocked:
Bathroom walls are all in place and partially secured, just the last end wall to be modified, it needs a hole for access to the rear of the vanity unit so we can get at the back of the taps and switches etc.
Cut out the bathroom door aperture tonight, and took that panel's width down by 1/4" to make the corner square up properly. Looks OK, we've got to sort out the catches for the door as the width of the wall is less than the donor caravan, but it fits OK and looks good.
Rita is going to rub the door wood down tomorrow and give it a coat or two of varnish.
The water hoses have been sorted out and they have to be laid in place before we fit the shower tray and vanity unit. There is room to pull them through, but I wanted to use P-clips to hold them in place. Also got to run a gas pipe to the water heater and 12V supply/control cable for that as well.
Took the jigsaw to the body today and after a lot of tutting and lip-biting, cut the hole for the water boiler. It actually fitted first time, no hassles and nothing in the way.
Suitably emboldened I did the same for the water inlet and filter, but had to locate that under the vanity unit and out of sight. We will be fitting an inspection cover over a largish hole in the rear panel of the bathroom so we can get at these things and the taps etc from behind.
Hoses next, then the gas pipe to feed the boiler and the mains feed cable for the sockets and the heater in the living area.
The water boiler is gas and mains, and also has a largish polystyrene insulating outer sheath, which is in 3 pieces at present.
Then we can fit the shower etc in place and seal it in.
Got the door template from Thetford this morning, it seems that Thetford have a number of door options for their cassette toilets, ours is 'Door II', which seems to be the same as a C2 door.
I'll be having a look at the drawings later on to see if it all adds up before getting the jigsaw out.
After a bit of thought, we sat down outside the trailer and tried to work out how we were going to do the hole cutting for the cassette toilet. We used the loaned internal template to drill the two pilot holes, but once outside, the new sheets were found to have pilots that were centred vertically and horizontally, while the drilled holes were diagonally centred, top left to bottom right.
Fortunately, the Americans like to work in inches, and whole ones if possible, and after a bit of drawing on the side of the trailer with a set square and ruler, we established the centre of the old system. It was then fairly easily converted to the centre of the new templates and the outline of the cut-out drawn from the template.
Once hacked out with the jigsaw, which did very well on the rounded corners, we had the hole and it looked to be exactly right.
The door we had bought on ebay was offered up and holes marked on the GRP outer so we could just pop a small centre with a drill to get through the GRP skin.
Once we had run a decent bead of Sikaflex round the door outer, it was screwed into place, never to be removed again!
When we came to the door infill, the template was too small, so we cut one out based on measurements taken from the door. That was sealed into place and we finished for the evening.
Just got to modify the toilet mounting wall to clear the door protusion on the inside, the trailer walls are much thinner than most caravans.
listerdiesel,
I was researching problem I'm having with a Thetford Cassette Toilet C4.
My project is almost the same as yours.
I have a Swift Corniche 14/4 as a donor, from which I got the C4 Toilet, I'm fitting out a Fiat Ducato Mini-Bus (windows all round) as a 'stealth' camper, though it may not look very stealthy with solar panels on the roof.
My reason for contacting you is that I'm looking for any Documentation/Drawings/Schematics on the Thetford C4 Cassette. If you still have any documents left over from your project at this late stage, I would love to get access to a copy of them.
Do you have updates on the progress of you project posted anywhere?
I like looking-up projects hoping to learn something, anything, as I've never been on a caravan, campervan or mobile-home Holiday, though I did a camping holiday back in the 60's, the last century, enough nostalgia.
Here's hoping to hear from you.
Regards,
Jack
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Topic: Thetford C4 Cassette Toilet Fitting
