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Any Jones and Shipman Guru;s Here.

To be answered only by people who are familier with these machines and there Idioticies. Been rebuilding my Jones and Shipman 540 surface grinder. (1965 model AP) after studying hard some of the design features . there are some I cant get my head around. Now I've put the same question to the tech heads at:- Jones and Shipoman themselves Jubilee machine And Andmar. I'm still lost. After carefully reassembling the ram with new piston rings and seals. I find that it still leaks somewhat. it leaks from under the ram blocks where the hydraulic oil enters them. they are mated against a roughley machined surface , oil tranfers to the ram thru holes that line up ..there is no gasket or was there ever one. the above companies tell me that it was designed not be oil tight and no gasket, and they say this is what it's suposed to do....leak oil !!! they say its suposed to leak oil ......the oil does all end up back in the tank though from a drain in the table. Now they cant all be wrong in saying this ......after all the machines are bullet proof and do last a long time. They are tried tested and proven to be very reliable......but me being me cant accept the oil leaks. do you think im too fussy........should I ignore or modify. any thoughts on this anyone. All the best..mark

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mark
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Definitely too fussy Just use it.

-- Regards,

John Stevenson Nottingham, England.

Reply to
John Stevenson

Mark,

Yes this puzzled me - the oil is used to lubricate the slideways, runs into troughs at the end of the table, and overflows back to the tank. The troughs are exposed to falling debris in the air if the table is set to traverse for its full motion, but stay 'shaded' by the ends of the table if moderate travel is set up.

One must assume that any contamination settles to the bottom of the oil reservoir, and any residual contamination is removed by the filter.

BTW the AP feature is a waste of space - take it off and send it to me and I'll dispose of it for you

AWEM

Reply to
Andrew Mawson

Ok thanks Andrew and John for your replies. I've got it all worked out now. After talking to different people who have worked on these things . and looking at the machine and pondering. Everything now makes sence. The machine "was" degigned to leak oil . The leaked oil from under the ram blocks flows out under the table and go's down thru holes to lube the cross traverse after its lubed the cross traverse it ends up in a settle ment troth at the front of the machine which is slantted slightley......another hole at high end of slanted troth, takes the oil back to the tank. The oil that comes off the end of the table slides, ends up in little troths under then either side of the table. The troths act as settle ment tanks as well. when these little troths are full they over flow back under the table and the oil makes its way back to the main drain. You have a choice with these troths . 1.You can wipe the oil out at the end of every sesion. 2.Or open the drains at the bottom of them .drain it off or perhaps plumb pipes onto them and have them go into a bucket that you empty. 3.Or you can let nature take its course and let them over flow back under the table (This is an oil saving feature that was thought of during WW2 when the machine was designed ..,whan oil was expensive and in short supply) ...as well,if you use the machine a lot you would want to take advantage of this feature because your going to be topping the oil up a lot, if you go with "1" and "2". So the outcome of all this .....is that the machine has had a lot of thought put into it by its designers.......and I admit to being wrong about it . all the best...mark.

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mark

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