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18th October 2014, 09:49 PM #1New Member
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Hercus 9 ARM Spare Parts Manual - 1971 5th Edition
I have just acquired a Hercus 9" ARM, Serial # 13862 (made in 1971) and I am looking for a spare parts manual to suit this machine before I launch into pulling it apart, particularly as the gear box requires some work to repair transport damage to castings on both Gearbox tumblers arms (thin section of casting on the end of tumber arms broken off) and the two plungers (bent). See attched photos .
I have had a chat ro Mal and he is looking at some options for me.
I have also had a few thoughts about the option of getting someone, with better kit than mine, to bore out the plunger holes in casting and set in a brass or steel bush to create the stub to hold plungers. Not sure if anyone has tried that.
IMG_7111.jpg
IMG_7108.jpg
Back to the parts manual. I have a pdf copy of the Hercus 9" Swing Percision Lathes Spare Parts Manual Third ed'n 1965 but it does not cover this machine and I am aware there is a 1971 Fifth Edition out there but I have not been able to find a references to obtaining a copy.
If anyone knows were I can find/buy a copy I would be very happy to hear from you. If you happen to have spare parts available for a matching gearbox I would be overjoyed to hear from you.
I am also looking for information on the correct change gearing setup for this lathe. There does not appear to be a gear chrt out there covering metric machines thant I can find.
Is there any special lubrication required for the roller bearings or just use ISO68 hydraulic oil as for plain bearing machines?
Regards JohnDym
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18th October 2014 09:49 PM # ADSGoogle Adsense Advertisement
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19th October 2014, 09:03 AM #2Mechanical Butcher
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No, but have 4th edition, 1968 parts book in PDF, 4.3 MB.
Jordan
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19th October 2014, 08:08 PM #3New Member
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19th October 2014, 11:09 PM #4Mechanical Butcher
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PDF sent.
Jordan
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20th October 2014, 05:25 PM #5New Member
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10th February 2015, 10:57 AM #6New Member
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10th February 2015, 01:31 PM #7Member
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Thoughts on repairs to the tumbler arms: Bore, drill or ream either all or part way through to the OD of the original extensions. Then insert a bush that protrudes the same distance as the original extension. The alternative to this would be to machine up new pins that are undersized where they go through the bracket, and insert a bush that goes through the existing bore, but that has a upper OD the same size as the original. This would allow you to keep the same knobs, the only way that anyone would be able to tell the difference is if they looked at end of the pin where it protrudes through the bracket.
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