Post by: McCabe-Thiele (Ted) on September 29, 2023, 03:56:37 PM
Post by: Bryanj on September 29, 2023, 04:01:11 PM
Post by: Oddjob on September 29, 2023, 04:50:10 PM
As Bryan says, try ands use a 6 sided socket.
Genuine seem to be better made IMO.
Post by: McCabe-Thiele (Ted) on September 29, 2023, 04:54:59 PM
Always 17mm Ted. If not they ain't genuine.
As Bryan says, try ands use a 6 sided socket.
Genuine seem to be better made IMO.
Judging by the marks they are original!
I still have a set of chromed ones from DS that I never fitted to my 400 as the the threads seemed poor quality with what appears to be chrome splatter on the the threads Not worth risking stripping a thread on the cam cover. I don't have a nut that I could use to try to sort them out.
Post by: taysidedragon on October 03, 2023, 12:36:09 PM
Always 17mm Ted. If not they ain't genuine.
As Bryan says, try ands use a 6 sided socket.
Genuine seem to be better made IMO.
Judging by the marks they are original!
I still have a set of chromed ones from DS that I never fitted to my 400 as the the threads seemed poor quality with what appears to be chrome splatter on the the threads Not worth risking stripping a thread on the cam cover. I don't have a nut that I could use to try to sort them out.
Try using a thread chaser to clean them up.
Post by: McCabe-Thiele (Ted) on October 03, 2023, 01:00:43 PM
Post by: Oddjob on October 03, 2023, 01:46:19 PM
Post by: Laverdaroo on October 04, 2023, 11:52:38 AM
I have a thread file but tbh I do not really know how to use it - its a square looking file covered in bits of differently gapped sections - it was bought for a specific job a few years - I bought the wrong type this is for sorting bolts out not nuts - for starters not sure what thread the cap are?
Loads of bits on you tube Ted, picked this at random.Having a thread gauge helps enormously though........
https://www.supercheapauto.com.au/blog/tools-workshop/how-to-use-a-thread-file.html
Post by: McCabe-Thiele (Ted) on October 04, 2023, 12:08:35 PM
Mine is double ended so it has 8 different metric thread pitches - that's why I tend to ask what the thread pitch is as my eyes arn't great at the initial checking process plus on these caps there is not a lot of threads to check against like a long bolt.
PS Somewhere I have a set of gauges but it's not just for metric so way too confusing. Having the right tool does not work when there is another tool at the handle end.
Post by: Laverdaroo on October 07, 2023, 07:15:30 PM
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Post by: davidcumbria on October 13, 2023, 09:11:00 AM
I got a new pitch gauge with some taps I bought and use that. Quick check, match the file size up,sounds like you have the same one as me, and away you go. It’s amazing what you can recover with them, threads that you thought were proper knackered can be nannied up rather well when used with a bit of patience
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The steering stem thread ( m24 x1) was damaged during powder coating and to my horror got badly cross threaded when i tightened the stem nut. First time in years - fear and self loathing ! I was looking at a world of pain, cost and inconvenience but on the basis of this thread bought one of these square files and spent half an hour getting it back in shape. Nut now spins easily with finger pressure only. A narrow escape and a new technique learned. One of the great satisfactions of spending our time doing this and benefiting from the great advice on here👍
Post by: Laverdaroo on October 13, 2023, 09:29:30 AM
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Post by: McCabe-Thiele (Ted) on October 13, 2023, 10:35:37 AM
I had a similar issue when trying to fit the bearing retainer on my 400 wheels rebuilt by CWC. Local engineering firm made a tap to clean out the thread inside the hub.(damaged when CWC removed the bearings - CWC were not interested)
They gave me the tap - came in handy on my 500 front hub after drilling out the four stake marks to clean out the thread.
Post by: DomP on October 13, 2023, 05:49:00 PM
Post by: McCabe-Thiele (Ted) on October 13, 2023, 06:18:04 PM
How can the threads be cleaned up on on larger internal thread, namely the rear hub thread?
Not sure but most probably when you remove the old retaining (left hand thread) it's difficult to remove all the distortion caused when the factory do the four stake points. I have found that a new retaining ring does not want to go in easily beyond half a turn by hand as the Hub threads look flattened so as to speak.
On my rear hub I used a small round file on the inside of the first couple of threads to file out the visible distortion at the stake points. I then used the old retaining ring that I had cleaned thoroughly with a wire brush as a tap (I did not have the nerve to cut across the thread with a hack saw in four places) the old ring went in a good couple of complete turns by hand - I basically tightened it up and took it out a few times - cleaning the thread on the retaining ring as well as WD 40 on the Hub. I then tried my new retaining ring & it went in a couple of turns by hand so I was happy it would tighten up when I fit the bearings etc.
I have not as yet fitted the wheel bearings as CWC rebuild wheels without them in place.