Jim,

You will likely get your answer here, but do join the yahoo group for Drummond lathes – as much as I hate navigating any and all of the yahoo forums! Some good posters over there, other than the ones that frequent this forum as well.

Hi James I have an M Type and to change to back gear there is a slotted screw on the bull gear just loosen and rotate the bull gear with the button to the end of the slot. Then re tighten the slotted screw. You then rotate the back gear lever to engage the mesh on the gears rotate as you do to help engagement. Do the reverse to take out the back gear but after rotating the bull gear slot tighten the screw and importantly hold the chuck and by hand rotate the pulley to make sure that the spring loaded plunger has located you will hear and know when it is. If you need any further info send me a message and it is worth looking on my album's for info.

David

Edited By David George 1 on 12/07/2018 20:24:51

I use a pair of longnose pliers in my right hand to gently pull on the brass pin then my left hand thumb shoves the knurled screw clockwise while my left hand fingers hold the outer rim of the bullwheel

this pushes the inner plate forwards to wedge the pin out and disengages the bullwheel from the pulley, making the backgear system available

Reverse the procedure to go direct drive again

Edited By Ady1 on 13/07/2018 09:14:39

Yes. Loosen the slotted screw half a turn or so then rotate the plate around so the face cam action pulls the pin outwards and disengages the bullwheel (gear) from the 3-step pulley. Then tighten the slotted screw again.

The plate you turn should have either a small knurled knob sticking out that you push on with a screwdriver to rotate the plate. Or there will just be a small hole in the plate if the knob has fallen out over the years.

You will see the plate has a slot in it that the screw sticks through. You rotate the plate so the slot moves all the way to one end or the other.

Once the plate has been rotated so the drive pin is pulled out, and slotted screw retightened, you should be able to spin the chuck or spindle without the 3-step pulley rotating if its held by hand. This means the direct drive is disconnected. Then you can swing the back gear into mesh with the two gears – the bullwheel gear and the small gear at the other end of the 3-step pulley.

Once you do that, you should be able to pull on the belts to rotate the 3-step pulley on the spindle and the spindle/chuck will rotate slowly. If it is all locked up, you have not disengaged the drive pin properly, so don't start the motor untill you can turn things over by hand first.

I keep them loose myself, but you've got to watch that none of them come out too far or they start to catch on the main headstock housing

A light finger tightness works for me