Hello Nigel,

I don't own a Harrison lathe but I am refurbishing a Churchill Cub which has similarities,

It is a little more detailed than you have outlined.

These are the steps I had to take.

1 Disconnect the feed shaft, probably a taper pin in the coupling

2 Ditto on the leadscrew or look to see if there is a bearing housing let into the gearbox you need to release

3 Remove the shafts support bracket at the tailstock end

4 Make a wooden dowel long enough to bridge right across the apron, rout a groove down the length to match the one in the feed shaft. Carefully draw the feed shaft out towards the tailstock and feed the wooden dowel in to replace it's position in the apron. That will capture and support the worm and it's two thrust bearings that provide powered functions to the saddle.

5 Hold the wooden dowel in position with hose clips on either side

6 Look for and release the underbed guides that prevent saddle lift and remove the bolts holding apron and saddle together. Support the weight of the apron on a wooden block beneath it

7 Withdraw leadscrew clear of the gearbox and slide saddle away from apron which you can now lift away complete with the dowel and leadscrew. Now draw the leadscrew out having ensured the 1/2 nuts are clear

8 Putting it back together is pretty much the reverse of the above

I hope that is about right, hopefully an owner will eyeball this and add Harrison specific points to take into account

Regards Brian

Hi, is there anyone you could put me in touch with who services Harrison L6 lathes