Serious Glue required

[robertj]

Sikaflex. Beef it up with somethng over the joint to strnghten the join.
I had to cut down my air filterhousing (bukh) then just restuck using sikaflex.
About 3yrs now.

 

[Tugw]

Belzona or Devcon thatll sort it

 

[ALPHORA]

It might be worth another go with Araldite. I repaired the plastic radiator on my citroen about 5 years ago and it has been fine so far. I abraded the bits to join with fine wet and dry then washed off with acetone before glueing. I have found that the 5 minute version seems to stick to plastic better than the slower drying type, but left it overnight before use. The repair was a mounting bracket that had pulled off and made a hole into the liquid side of things, so it withstands the pressure in the cooling system and the temperature changes.

 

[Plevier]

Hot Glue Gun. It is better than a soldering iron as it is designed for exactly this type of job, with the correct plastic 'stick'.

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+1.
http://www.tool-net.co.uk/p-1301/bosch-pkp18e-240v-hot-melt-glue-gun.html
Bonds reasonably well to PE and PP. I repaired a water trap with this.

 

[Floatingpreferably]

Hi Ross, believe me had it been that simple, the last thing I would have done was put a posting on the subject. This afternoon I will make another effort to grip the inside part of the union, but doubt I will manage it, as the only access is through the coolant filler cap. If not I will find something to block the gaps and seal it.
Thanks for the suggestions everybody.

 

[Floatingpreferably]

Thanks for the suggestions, all being considered.

 

[BERT T]

Hi Ross, believe me had it been that simple, the last thing I would have done was put a posting on the subject. This afternoon I will make another effort to grip the inside part of the union, but doubt I will manage it, as the only access is through the coolant filler cap. If not I will find something to block the gaps and seal it.
Thanks for the suggestions everybody.

I previously asked what the inside diameter of the fitting was, but got no response. The reason I asked the question was if it was small enough to use a stud extractor to grip the inside of the fitting from outside the tank and enable you to tighten the flange nut.

 

[Floatingpreferably]

Hi Bert T, I thank you for the suggestion. I had an interuption after you had posted your first query and then missed it. I checked the situation this afternoon and the job I did last weekend appears to, at least for the moment, have fixed it. This despite the adhesion on part of the union being suspect. I will run the engine up to temperature on Sunday and watch the dodgy union for leakage. To use a stud extractor would be a good way of holding it, provided I could get it in from the outside, the part is far from easily accessible. Your suggestion is appreciated, thanks.

 

[Floatingpreferably]

Hi, yes Sikaflex can be very effective, thanks I will bear that in mind, but I must say it was not the first product that sprang to mind.