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INSTALLATION OF THE THETFORD SERVICE DOOR MODEL 3

The Thetford toilet model C223-CS with a toilet bowl that revolves 180 degrees on the base and locks into place by simply pressing down on the seat is made of light plastic material with an electric flush system, measures only 534 x 394 x 580 mm with a sitting height of 492 mm and net weight of 7,2 kg. To easily remove the 18-liter waste tank, you can install the Service Door Model 3. The Door is made of plastic material, it’s water-resistant, UV-resistant and with the push-lock, you can easily open and close the Door.

Thetford Service Door Model 3

When installing the door vertically, the manufacturer advises that the door frame hinges face the driving direction.

First off, check the minimum available space for the door. For the door to be above the black plastic sidebar, you may have to raise the shower tray on which the toilet and the waste tank will be standing.

The manufacturer supplies all paper templates for the cutouts of the vehicle wall. Just cut them out, draw the outlines and drill the holes. To ensure that the car paint is not scratched, use protective tape before drilling and sawing.

The cutout wall panel will be the door panel, so you should only saw in the indicated places, especially so you can keep any decorative stripes on the final piece for the door panel.

And then there’s quite a big hole in the vehicle wall!  Now you can check if the plastic frame fits and then remove the tape.

Another template is for the cutout panel – the door panel. Now you really have to focus on the right position so the color or any decorative straps on the panel will match and align the ones on the vehicle. To prevent any scratches, use some tape and draw the outlines.

To properly install the panel, the wall thickness of the camper must be between 23 and 39 mm, this is usually the case with “regular“ Campervans and Mobile homes that are sandwich constructed. Because the wall of the Sprinter is not this thick, you can build a wooden frame of Multiplex to thicken the vehicle wall for the door installation. In order for the door panel to have the same thickness as the thickened wall, you can thicken the door panel with wood. 

Glue the wooden frame to the cutout hole of the vehicle wall with Sikaflex and fasten it with clamps until it is dry. The wooden frame has to be fixed and the glue dried completely before installing the plastic frame of the service door to prevent the pull of the screws from pushing in the metal. You can prevent this from happening by installing the wooden frame first and then the plastic frame.

Use sealant on the door panel to make it waterproof before placing the brackets on the inner side of the door, applying sealant in the groove of the outer side of the door, and then fitting the door panel in the outer side of the door frame.

The last step is to fill the groove of the outer frame with sealant before screwing the outer frame to the outside wall of the vehicle. The inner side of the frame then connects to the inside of the vehicle, in this case the wooden frame, with small screws.

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