Great War truck Posted March 26, 2020 Author Share Posted March 26, 2020 Dad machined the Bronze Bush today - left a fairly slack fit for the Shackle Pin as the internal diameter of the Bush will decrease when it is squeezed into the Spring. Started by jacking it in into the Spring - our usual method but it tightened up considerably when it was about half way in. Had to resort to the Press and that finished the job easily. 5 Quote Link to comment Share on other sites More sharing options...
Great War truck Posted March 28, 2020 Author Share Posted March 28, 2020 All 4 Spring Straps fitted. Threaded Hole put in the new Bush for a Greaser and the three original Greaser threaded holes remaining in the two Springs cleaned up and trial fitted with Greasers 4 Quote Link to comment Share on other sites More sharing options...
Great War truck Posted March 28, 2020 Author Share Posted March 28, 2020 Now eyeing up the next job - we have two King Pins that will want tidying up but will be fit to be used again but only one nut for them so the second nut will have to be made. They are 2" A/F and the thread is either 1.42" x16 or maybe 1.40" x16 - depends which one you measure. We have 2" Hex steel in stock so that should be a straight forward job. 4 Quote Link to comment Share on other sites More sharing options...
Great War truck Posted March 29, 2020 Author Share Posted March 29, 2020 Looking now at the Track rod or described in the Parts Book as the Steering Cross Rod. We have recovered a sound one from our "spares Department" but no Clevis Bolts. The Bolts incorporate Greasers. We have another old front axle with these parts still on it but the Clevis Bolts look beyond use again - so at least one has to come out to be used as a pattern for us to make two new ones. One has started to move but needs some more work yet. 3 Quote Link to comment Share on other sites More sharing options...
Great War truck Posted March 30, 2020 Author Share Posted March 30, 2020 dad spent the day trying to free the stubborn Clevis Bolt. After spreading the end trying to get it out he eventually had to grind off the end to get it free. All the information still there to make copies. 2 Quote Link to comment Share on other sites More sharing options...
Scrunt & Farthing Posted March 31, 2020 Share Posted March 31, 2020 (edited) I was just musing on what screw threads Peerless were using at that time, I would have assumed NF for those shackle pins. The SAE were trying to standardise threads by the middle of the great war (to a US standard) and Peerless had already adopted many of the (non thread) SAE standards so i am guessing by the time this lorry was built it was all NC/NF. Or is that a foolish assumption? Dave (S&F) Edited March 31, 2020 by Scrunt & Farthing Quote Link to comment Share on other sites More sharing options...
Minesweeper Posted March 31, 2020 Share Posted March 31, 2020 We were lead into a sense of false security about threads when we started the Peerless - by that time we had already done three American trucks - two 1917 Autocars and the 1918 FWD -the threads in the Autocars were all UNC and the FWD was all UNF - so we naturally thought that the Peerless would be one of those two thread systems - in which case we would probably have all the required Taps and Dies for any thread that we would have to make for Peerless. Wrong! We could not identify any of the threads initially that we began to reveal on the Peerless and it was really through this Forum and helpful advice from others that the light dawned that they were UNS. Another thing - it seems very likely that our Peerless could have gone through Slough Estates before it was sold on and in which case, the odd British thread appears. Tony 1 Quote Link to comment Share on other sites More sharing options...
Scrunt & Farthing Posted March 31, 2020 Share Posted March 31, 2020 That is interesting, thanks Tony. I guess the bigger diameter threads were UNS where they wanted to reduce the pitch (in spite of the diameter) to reduce the depth of the nut whilst keeping the load area high. It looks like that is what they done on the clevis pins. I always think it interesting to discover things like this, and re-think what must have been discussed in the drawing office, back in the day. Chees, Dave (S&F) 1 Quote Link to comment Share on other sites More sharing options...
Great War truck Posted April 3, 2020 Author Share Posted April 3, 2020 A piece of 2" A/F Hex bored out ready to screw cut the two King Pin Nuts back to back. Quote Link to comment Share on other sites More sharing options...
Great War truck Posted April 3, 2020 Author Share Posted April 3, 2020 Prepared the bits to make the two new Clevis Pins and also threaded a length of 2" A/F hex bar to make two new King Pin Nuts. The King Pin Nuts will be made back to back - easier to hold that way and will then be separated when all machining completed 1 Quote Link to comment Share on other sites More sharing options...
Great War truck Posted April 3, 2020 Author Share Posted April 3, 2020 Further work done on the two King Pin Slot Nuts - they are still conjoined - just have to machine the slots and then separate into two. The 1" threads have been screw cut on the new Clevis Pins Quote Link to comment Share on other sites More sharing options...
Great War truck Posted April 3, 2020 Author Share Posted April 3, 2020 Started to cut the slots in the two King Pin Nuts - they are still together and not yet separated. Should finish that job tomorrow and will return then to the Clevis Bolts. 3 1 Quote Link to comment Share on other sites More sharing options...
Zuffen Posted April 3, 2020 Share Posted April 3, 2020 Thanks for posting. It sure keeps us Quarantined people entertained. Not that your prior resto's didn't. I thoroughly enjoy and applaud your efforts. 1 Quote Link to comment Share on other sites More sharing options...
CornishMade Posted April 4, 2020 Share Posted April 4, 2020 We have been watching this post with a great deal of interest, and I have been updating dad with it as far as possible with the isolation rules applied, out of interest if you can get the Smithsonian channel, America in colour, the episode with Ford, firestone and Edison has a great deal on ww1 and the car and truck industry and a convoy of ww1 cross the country, they are often repeated so may be worth a view Quote Link to comment Share on other sites More sharing options...
Old Bill Posted April 4, 2020 Share Posted April 4, 2020 (edited) I 'm really pleased that you are enjoying it all. This lock down is a real pain although Dad is definitely making the most of it! I think the target will be to hang the front end as soon as we are all allowed back together. To that end, Dad has everything under control except for the king pin thrust races which are with me. We have four bearings in stock from which we need two. They have a spherical top which sits in the top of the axle end. There are thirteen 5/8" diameter balls in each. Those that we have could do at a pinch but they are a bit ratty so I will order up some replacements. The main problem is that that either through use or corrosion, the races are dimpled. This will make the steering very lumpy as to rotate, the whole weight of the front end must lift. Not quite sure what to do about these. I have had a look on line to see if the bearings are still available but have not found anything like yet. They actually look like turned parts so I thought I would try tickling them up with a carbide tool. The results were predictable..... Does anyone have any suggestions as to what to do next? I could just leave them but it rather goes against the grain! Steve Edited April 4, 2020 by Old Bill Quote Link to comment Share on other sites More sharing options...
Gordon_M Posted April 4, 2020 Share Posted April 4, 2020 Build an assembly with a drive system, plonk it in something full of something like valve grinding paste and just let it turn for a few hours, basically lap them like valve seats. Quote Link to comment Share on other sites More sharing options...
Cel Posted April 4, 2020 Share Posted April 4, 2020 I have a small universal grinder with an attachement for internal grinding. With a stone dressed conical and with the right diameter it would make an easy job of it. I imagine that someone near you has the right equipment. I would gladly do it for you guys at no charge, if only I were closer. Regards Marcel (enjoying this thread very much!) 1 Quote Link to comment Share on other sites More sharing options...
smiffy Posted April 4, 2020 Share Posted April 4, 2020 It might be worth thinking about making some out of gauge plate and then hardening them ,or anneal the old ones then machine and reharden .them .I expect the original ones are carbon steel so well within your capabilities Mike Quote Link to comment Share on other sites More sharing options...
andypugh Posted April 4, 2020 Share Posted April 4, 2020 (edited) I reckon that my CNC lathe with a CBN tool could tickle them back in to shape it it was OK for them to become a little thinner. (And I am not allowed in to work for 3 weeks, and expect to run out of things to do) Edited April 4, 2020 by andypugh 1 Quote Link to comment Share on other sites More sharing options...
andypugh Posted April 4, 2020 Share Posted April 4, 2020 1 minute ago, andypugh said: I reckon that my CNC lathe with a CBN tool could tickle them back in to shape it it was OK for them to become a little thinner. I seem to recall you have a ball-turning attachment. Could that be fitted with a CBN tool to generate the circular profile? Quote Link to comment Share on other sites More sharing options...
Scrunt & Farthing Posted April 4, 2020 Share Posted April 4, 2020 16 minutes ago, andypugh said: I reckon that my CNC lathe with a CBN tool could tickle them back in to shape it it was OK for them to become a little thinner. (And I am not allowed in to work for 3 weeks, and expect to run out of things to do) CBN would tickle them nicely. What about 440c SS, and then run up to the proper temperature. With 440c you will get to the proper hardness for the bearing. The only problem might be finding a small enough quantity. Dave Quote Link to comment Share on other sites More sharing options...
8_10 Brass Cleaner Posted April 4, 2020 Share Posted April 4, 2020 I'm another who suggests a lap. Turn up a male, grinding paste , putnon the lathe Or set up a shaped stone tool in a dremel in the toolpost and slowly grind Quote Link to comment Share on other sites More sharing options...
Great War truck Posted April 5, 2020 Author Share Posted April 5, 2020 King Pin Nuts now finished and screwing smoothly on to the King Pins. The worst job today was getting the remains of an old Split Pin out of one of the King Pins - but it gave in in the end! 2 Quote Link to comment Share on other sites More sharing options...
Roy Larkin Posted April 5, 2020 Share Posted April 5, 2020 I know it is not much help, particularly as they gave no hint as to how they did it, but 3 Heavy Repair Shop at St Omer were repairing 1,000 ball bearings a month. Quote Link to comment Share on other sites More sharing options...
Old Bill Posted April 5, 2020 Share Posted April 5, 2020 Thank you chaps for all fo your thoughts and comments regarding the thrust race, particularly Marcel for your very kind offer. A trip to Belgium has a lot of appeal at the moment! Your suggestion, Marcel, of the tool and cutter grinder gave me the idea of using my Dremel grinder in the toolpost, later confirmed by Hedd (Brass Cleaner), so this is what I tried this morning: The grinding disc has a larger radius than the groove so I set it below centre line on an angle. The groove shape seems to be uncritical as it certainly doesn't match the balls. With the lathe on bottom speed (25rpm) and a very ginger feed of no more than half a thou every ten revs or so, I had a go. The result was actually very pleasing. Before and after. I did two lower races and one upper one as we already have a good one. All very satisfying and some original parts salvaged which is always good news. I have ordered some new balls to go with them. Than you everyone for all of your ideas! Steve 6 Quote Link to comment Share on other sites More sharing options...
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