Changing Record CL1 belt

Richenda · 28 May 2016

Help please! I have a CL1 lathe and need to change the belt but cannot get the spindle pulley out! It looks as though the previous owner may have had problems because there are a few marks on the shaft but not enough to damage it.
Can anyone tell me how to 'unjam' the pulley spindle/shaft to replace the belt?
Any help or advice welcome (hammer)

Jacob · 28 May 2016

If it's anything like the C3 - mine had two allen key grub screws down the hole, not just one. So you loosen one expecting it to come loose. It then takes hours to work out there's another one down there still holding it tight.

Richenda · 28 May 2016

Thank you Jacob for your quick response. Indeed there was a 2nd allen key grub screw down the hole on the pulley wheel. The pulley wheel is now free moving but still the shaft won't push out from left to right when being tapped. We are afraid of hitting too hard as think the casting on the head stock may crack. Did you have to hit your shaft very hard to get it out to put the belt on.
Thank you so much for telling me about the 2nd hidden grub screw! #-o

Jacob · 28 May 2016

On a C3 - two grub screws also hold the phosphor bronze bearing in place but shouldn't be tight as they engage lightly in a slot. However they usually are tight and need slacking off, without taking right out. Slacken right off the inner lock ring and then the whole bearing and shaft come out from left to right leaving pulley block and lock ring inside the case. Should leave the left hand thrust bearing in situ but in fact this may move too, to make things more complicated.

Hope that helps!

PS may be different on C1 I don't know.

Richenda · 28 May 2016

Hmm - think your C3 is a different set up. On the CL1 unscrewed an allen key screw and washer on left of head stock which screws into the end of the shaft. It looks as though the shaft is located inside another steel 'collar' which in turn is inside another outer collar. I'm calling them collars but they may be the large bearing. It sounds, from the instructions, that the outer bearing (collar) may also move and need to be tapped back in.
I'm not sure what the phosphor bronze bearing is. The only grub screws I can see are on the pulley wheel which move freely along the shaft. The whole shaft seems to be locked rigid and even though we've given it quite a hard hammer it isn't moving at all. One of the 'collars' looks very, very slightly high on one side but I can't imagine that would stop the shaft coming through the casing.
So frustrating!