Ducato etc scuttle drain modification - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #1 of 32 (permalink) Old 11-09-2021, 16:01 Thread Starter
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Ducato etc scuttle drain modification

Simple enough drill a hole roughly the same size as the one on the right side of the scuttle panel, and let it drain via a hose.


I bought a 1 meter length of 28.5 convoluted hose, and B&Q sell a larger size caulking gun nozzle separately, square of the end of the hose and cut off the nozzle to its widest internal part, it's a tight fit so shouldn't need any mechanical fixing such as a Jubilee although that would stop it being forced upwards out of the hole if anyone is working below it.

The OD of the pipe is 34.58mm ish so care is needed in drilling the hole, as the nozzle is only fractionally larger in diameter, although I think I may grind off the first section of the convolution bit right at the top of the hose to make the difference to the nozzle greater and push it up from below using the nozzle to secure it once in place, just checked I didn't look first but it isn't smooth bore as I though.

I have to add I have not actually fitted it yet as the ECU is away for repair and I only want to fit this once, I'm hoping that SuperGlue will hold it in place as it will be more rigid than sealant.

And I need to find something to drill the hole with, I have a 35mm spade but I reckon it'd grab and ruin the job.


Comments invited as I can't figure out anything better.








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post #2 of 32 (permalink) Old 11-09-2021, 16:07 Thread Starter
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So thinking laterally I'll see if I have or can get a small piece of thin plastic and make a large washer to fit twixt nozzle and pipe, needs to be thin as it will form a lip above the scuttle.

I wonder if a 4 pint plastic milk carton would be up to it?
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post #3 of 32 (permalink) Old 11-09-2021, 16:10
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Amazon do a step drill bit that’ll go to 35mm.

Terry
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post #4 of 32 (permalink) Old 11-09-2021, 16:36
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Beginning to come together, I just hope the ECU IS the problem.

Beware SuperGlue does break down with water (it’s how to separate children who have stuck their fingers to the it face or elsewhere - keep flooding with water and SuperGlue gives way.

Would Araldite be a better choice as it sets hard in various times depending on the choice, 5 min, 30 min, 1 hour etc., and can be moulded well, it also is water resistant once hard (24h).

Was there evidence that it had flooded ? I may have missed that elsewhere.

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post #5 of 32 (permalink) Old 11-09-2021, 19:00
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Araldite would be fine, on a bit of useful advice from a sea going spark, I use it on any soldered cable joint that has had heat shrink sleeving added as it totally waterproofs any joint liable to be impacted by possible water ingress as heat shrink isn’t 100% watertight.

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post #6 of 32 (permalink) Old 12-09-2021, 10:12 Thread Starter
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Yes, I posted a picture a while ago of the air filter which had water on it, I should have taken action then but I think the damage was already done.

Thanks for the heads up on the superglue I didn't know that water affected it.


Araldite, not thought of using that as it's quite ugly, I was leaning towards a black silicone amongst other solutions.

Re fitting it, I may be able to use the top off one of the smaller water bottles like this, greater area for adhesives etc to adhere to, a little applied heat may flatten it, less lip as well, less lip is always better I find, not worked on Liz yet though, very lippy.

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post #7 of 32 (permalink) Old 12-09-2021, 10:26
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Sticking plastics is always a problem as many glues will not adhere, try to do a test before, apply, leave it to harden and subject to force greater than ever likely to encounter. Plastic bottle material is notoriously difficult to glue, but silicone sealant over wide area may be the answer.

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post #8 of 32 (permalink) Old 12-09-2021, 10:37 Thread Starter
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With the plastic bottle end I could use a couple of small self tappers to give a mechanical fixing too, a bit rough n ready but mostly out of sight.
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post #9 of 32 (permalink) Old 12-09-2021, 11:32
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Quote:
Originally Posted by Pudsey_Bear View Post
With the plastic bottle end I could use a couple of small self tappers to give a mechanical fixing too, a bit rough n ready but mostly out of sight.
……….and a piece of string ? 😉

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post #10 of 32 (permalink) Old 12-09-2021, 11:38 Thread Starter
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And baling wire.
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