How To Change A Seal On A Lathe Gearhead Shaft

papflynn	26/eleven/2017 00:28:02
xix forum posts i photos	I have an oil leak on my lathe and I 'believe' it is coming from the shaft shown in the image. Equally can be seen I applied some newspaper strips to the surface area and the upper strip is dry whereas the lower one has oil on it. I can motion the shaft slightly past pushing on it radially. Whatsoever thoughts equally to how I tin can fix this? Paul PS: Image to follow when I figure out how to upload.
papflynn	26/11/2017 00:28:48
19 forum posts 1 photos
Chris Evans 6	26/11/2017 09:29:49
2050 forum posts	Almost (all?) machine tools leak a fiddling scrap so practise not worry. If the leak bothers you turn a simple plastic "Loving cup" and after a degrease stick it over the end of the shaft with silicone.
Monoman	26/11/2017 09:53:26
51 forum posts seven photos	I don't think that is the terminate of a shaft. I have a Warco GH 1322 which has a very similar gear box. I would expect that to be the fill up plug for the gearbox, if you look carefully you tin see the allen key recess. The plug is a BSP taper and might need tightening. I did a full overhaul of my motorcar this summer and had a careful look at all the parts. Jerry
papflynn	26/11/2017 13:03:26
19 forum posts 1 photos	How-do-you-do Chris, that is a skillful idea. Will practise that. Jerry, is the large black allen cardinal plug at the 4 o'clock position to the large gear not the fill up plug? Rgds Paul
non done it yet	26/xi/2017 fifteen:37:22
6721 forum posts 20 photos	is the large black allen primal plug at the 4 o'clock position to the large gear not the fill plug? One should be able to tell if this is a turning shaft, when running. If information technology is, and in that location is no proper seal (or cap and drain, back to the casing), that is one really fine design! Not!
Bazyle	26/xi/2017 sixteen:25:50
6295 forum posts 222 photos	The gear selector knobs on the front take a pinion within which engages with a rack on a slider which in turn holds the gear selector fork. The slider runs forth a rod. The item indicated is the end of the lower rod. It is sealed by an o-ring at each end and held by an M5 grub screw at the right hand end under the front plate of the gearbox. And then unless you lot are taking the gearbox apart it isn't possible to renew the o-ring. The shaft is fixed non rotating so simply seal information technology over. edit - the lower black bush with the obvious hex socket is the drain and the upper the make full. Despite appearance the lower one is probably level with the bottom of the sump and has a void below partly for the on/off switch at the RHS cease. Edited By Bazyle on 26/eleven/2017 16:34:03
Monoman	26/11/2017 16:46:07
51 forum posts 7 photos	Here are some photos of my GH1322 side view, gearbox comprehend and gear change selectos.
Monoman	26/11/2017 16:51:42
51 forum posts 7 photos	Last post is side view of gear selectors, gearbox, partly disassembled and external end view. If you lot should recall of removing the gearbox comprehend then consider carefully. ane at that place are locating pins hidden beneathe the pigment and 2 the selectors demand patience to reassemble correctly. NOTE My machine is a GH1322. Jerry
papflynn	26/11/2017 19:22:17
xix forum posts i photos	As Bazyle pointed out, the shaft does not rotate. I don't feel like overhauling the gearbox so I think I will seal over the shaft. Cheers all for your replies. Paul
Martin Whittle	26/11/2017 20:45:21
101 forum posts 12 photos	Good selection Paul: 'If it ain't broke, don't fix it' If it works well, there is plenty of oil, and information technology is not not too former and worn, and there is not an obvious problem, information technology probably ain't broke. So don't set up it! - unless you lot feel an educational need tofind out how it works. Martin Edited By Martin Whittle on 26/eleven/2017 20:46:20
Bazyle	27/11/2017 00:01:40
6295 forum posts 222 photos	Paul, there are several dissimilar designs of gearbox on far eastern lathes getting lawmaking names and numbers and many but a size designation while the design has changed over 30 years. Yours is more similar a G0750G and is different inside from the one pictured in a higher place. If 1 day you practice take it apart have some pictures to assistance people in the future. Information technology besides helps when asking a question to provide more pictures and more than details including historic period of the machine.