pgrbff Posted July 11, 2023 Share Posted July 11, 2023 The nut holding the top of the rear shock absorbers to the upper bracket was extremely tight. It only came off because I was using a large 3/4" ratchet set. One side was slightly worse than the other. The nuts were actually hot when I got them off from the friction. Is it OK to use a die to tidy up the threads for the new nut? Getting new upper brackets will take more than a week and I really need the car back on the road as we are very remote. Quote Link to comment Share on other sites More sharing options...
Paul C Posted July 11, 2023 Share Posted July 11, 2023 If you have the correct die or dienut it should be okay. Are they significantly reduced in size due to corrosion, that might be a reason to replace but the load is not taken by the bolt, it is only a retainer to stop the bush sliding off the pin. 1 Quote Link to comment Share on other sites More sharing options...
pgrbff Posted July 11, 2023 Author Share Posted July 11, 2023 They look OK, just very, very tight. Determining the thread size is now the problem, to buy a die. I believe it is 12 x 1.75, but no car means I can't go out to check. 15 clicks from the nearest town. Quote Link to comment Share on other sites More sharing options...
Paul C Posted July 11, 2023 Share Posted July 11, 2023 14 minutes ago, pgrbff said: They look OK, just very, very tight. Determining the thread size is now the problem, to buy a die. I believe it is 12 x 1.75, but no car means I can't go out to check. 15 clicks from the nearest town. I believe that is correct, the parts listing has it as M12, 1.75 is the standard pitch so should be correct, it doesn't look like a fine thread. Quote Link to comment Share on other sites More sharing options...
muddy Posted July 11, 2023 Share Posted July 11, 2023 they are quite often a fine thread more like 12. 1.25, a good wire brush and then a hacksaw blade in your fingers to clean the base of the threads can often work wonders, put back on with plenty of coppaslip/grease and you are good. if you are in a pinch you could always drill through the flat on the nut and put a split pin in. Edit: if Paul has looked at the part no. listen to him not me! 1 Quote Link to comment Share on other sites More sharing options...
pgrbff Posted July 11, 2023 Author Share Posted July 11, 2023 The nut at the bottom of the shock is finer pitch but I believe the M12 can be 1.0. 1.5 or 1.75. I have ordered a die from Amazon, hopefully, will be here tomorrow. Nuts were also ordered, but I'll have to drive 2 hours to pick them up. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 11, 2023 Share Posted July 11, 2023 A set of thread files are great for this sort of thing. 1 Quote Link to comment Share on other sites More sharing options...
pgrbff Posted July 11, 2023 Author Share Posted July 11, 2023 Thanks for your help. Quote Link to comment Share on other sites More sharing options...
pgrbff Posted July 11, 2023 Author Share Posted July 11, 2023 3 minutes ago, Bowie69 said: A set of thread files are great for this sort of thing. Never seen them before. I have always just bought another die. Too many tools! Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 11, 2023 Share Posted July 11, 2023 You need much fewer thread files than dies as you are only trying to match the pitch, not the diameter of the fastener. 2 Quote Link to comment Share on other sites More sharing options...
Stellaghost Posted July 11, 2023 Share Posted July 11, 2023 I have a thread file, very useful, it's square with different thread pitches on each face, cannot lay my hands on it at the moment for a picture. However, I also have this which is excellent for restoring threads, it covers multiple 60 degree metric pitches and diameters within its range. It's called a Nes1A and restores threads between 4 and 18mm, you can also get them at 55 degrees to cover imperial threads regards Stephen 3 Quote Link to comment Share on other sites More sharing options...
steve200TDi Posted July 11, 2023 Share Posted July 11, 2023 That's interesting, I've never seen one of those before. Maybe looking at those on ebay later...... Steve Quote Link to comment Share on other sites More sharing options...
hurbie Posted July 11, 2023 Share Posted July 11, 2023 we have these in the workshop , but i prefer a thread file over these ... i find it very difficult to restore a thread properly with these . Quote Link to comment Share on other sites More sharing options...
Paul C Posted July 11, 2023 Share Posted July 11, 2023 Pretty sure mine are 1.75, I don't have any other dies and I did chase the threads before I zinc plated them. 1 Quote Link to comment Share on other sites More sharing options...
ped Posted July 11, 2023 Share Posted July 11, 2023 before you buy a die get a pitch gauge which will then tell you if its std pitch fine or extra fine 1 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 11, 2023 Share Posted July 11, 2023 Or buy the file which has them all on.... 1 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted July 11, 2023 Share Posted July 11, 2023 11 minutes ago, Bowie69 said: Or buy the file which has them all on.... Some on . There’s a dam site more pitches on my thread gauges than the 8 sides of my thread file. That said, I wouldn’t be without either. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 11, 2023 Share Posted July 11, 2023 I'm assuming metric land rover bolts here.... Until you are talking radius arms then not much won't be on a metric thread file. Quote Link to comment Share on other sites More sharing options...
ped Posted July 11, 2023 Share Posted July 11, 2023 that's why you buy pitch gauges in both metric and imperial that said i have around 5 sets and at any one time i'll only know where 1-2 sets are ,a bit like 10mm sockets Quote Link to comment Share on other sites More sharing options...
fmmv Posted July 11, 2023 Share Posted July 11, 2023 The rear top shock mounts are m12 x 1.75, ie the common m12 size. 1 Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted July 12, 2023 Share Posted July 12, 2023 On 7/11/2023 at 8:57 AM, Stellaghost said: I have a thread file, very useful, it's square with different thread pitches on each face, cannot lay my hands on it at the moment for a picture. However, I also have this which is excellent for restoring threads, it covers multiple 60 degree metric pitches and diameters within its range. It's called a Nes1A and restores threads between 4 and 18mm, you can also get them at 55 degrees to cover imperial threads regards Stephen Just be careful because although all metric threads are 60 degrees, not all imperial ones are 55.... Only British Standard Fine, British Standard Whitworth and British Standard Pipe are 55. UNF and UNC are 60. 1 Quote Link to comment Share on other sites More sharing options...
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