ging125 Posted November 21, 2013 Report Share Posted November 21, 2013 I tried to strip my mod last night for the regular clean and wasnt able unscrew the expansion tube. I have a feeling that I forgot to grease the thread after last clean. Any recommendations on how to free it? I see vinegar is a bad move! Its a wild cat pred 8. Thanks in advance Quote Link to comment Share on other sites More sharing options...
spandit Posted November 21, 2013 Report Share Posted November 21, 2013 Try some penetrating oil, Plusgas or similar Quote Link to comment Share on other sites More sharing options...
fieldwanderer Posted November 21, 2013 Report Share Posted November 21, 2013 I had the same problem, I ran it under the hot tap until it was so hot it was uncomfortable to hold then used a boa constrictor thingy to grip it. that's a brand new mod mind, I just wanted to see how everything came apart before I used it. Hope that helps Quote Link to comment Share on other sites More sharing options...
rtaylor Posted November 22, 2013 Report Share Posted November 22, 2013 I've got the same mod and like you it has become stuck if I don't unscrew it after each use. As above a penetrating fluid/spray or WD40. I resorted to putting the knurled bit in the vice, with some fabric as padding and unscrewing it that way. Quote Link to comment Share on other sites More sharing options...
rsc1960 Posted November 22, 2013 Report Share Posted November 22, 2013 place some copper slip on the threads when you get it open, screw back together but not as tight as a ducks Rs. should come apart on in the future, repeat as and when used, RSC Quote Link to comment Share on other sites More sharing options...
steve_b_wales Posted November 22, 2013 Report Share Posted November 22, 2013 I would also suggest using Copperslip (from Halfords) on the threads before fitting it together.(once you've managed to take it apart and clean it) http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_203941_langId_-1_categoryId_165705 Quote Link to comment Share on other sites More sharing options...
flynny Posted November 22, 2013 Report Share Posted November 22, 2013 +1 copper slip, after the boiling water trick, Atb Flynny Quote Link to comment Share on other sites More sharing options...
ging125 Posted November 27, 2013 Author Report Share Posted November 27, 2013 Thanks for all the replys, I will have a go at the penetrating oil. Any recommendations other than WD-40? Quote Link to comment Share on other sites More sharing options...
spandit Posted November 27, 2013 Report Share Posted November 27, 2013 WD40 is not a penetrating lubricant. Plusgas is and there are loads of different ones out there Quote Link to comment Share on other sites More sharing options...
Dekers Posted November 27, 2013 Report Share Posted November 27, 2013 I tried to strip my mod last night for the regular clean and wasnt able unscrew the expansion tube. I have a feeling that I forgot to grease the thread after last clean. Any recommendations on how to free it? I see vinegar is a bad move! Its a wild cat pred 8. Thanks in advance Do you mean the internal tube or the outer sleeve? Blow torch!? Vice...... wrap the mod thread/baffle front section in cloth or kitchen roll to protect it, if you have a decent vice you may be able to make some V section wood inserts for it. Grip tube by hand or with a oil filter chain wrench, again protect tube. Gentle attention with a rubber/wood mallet may help to crack/break the seal! Good luck, it could just be on for good now. I have got in the habit of checking I can undo all the bits on mine immediately after a shoot, somewhat anal I know, I also strip and clean all my P8's after every shoot, probably even more anal, but at least its quick and easy that way! I always Vaseline the threads, they come apart easy but it also melts and can flow a bit at times , must try some of the Copperslip stuff, or any other suggestions for the threads? Cheers Quote Link to comment Share on other sites More sharing options...
spandit Posted November 27, 2013 Report Share Posted November 27, 2013 If you can wrap it in rubber (pond liner for example) and then get a set of Stilsons on it, it should come apart but try the penetrating oil first Quote Link to comment Share on other sites More sharing options...
fieldwanderer Posted November 28, 2013 Report Share Posted November 28, 2013 Must try some of the Copperslip stuff, or any other suggestions for the threads? Cheers Not tried it yet but I bought a little bottle of smooth-kote a while back. It's a very fine moly powder in strong alcohol; put it on, let it dry and you have a light moly coat that apparently penetrates into the surface of the metal too - no grease to melt or attract dirt. I've no idea how well it'd work but it's a suggestion all the same. Quote Link to comment Share on other sites More sharing options...
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