charadam | 28/03/2015 16:21:16 |
185 forum posts 6 photos | My recently acquired specimen of the drill in the title has a lift-pin to engage/release the spindle gear. Diametrically opposite the lift pin there is a short 3/8BSW hex-headed screw that seems to also engage in the spindle gear. I have the manual, but there is no mention of the screw. Can anyone enlighten me as to its purpose and use? Incidentally, it is an excellent piece of kit. |
charadam | 28/03/2015 23:38:38 |
185 forum posts 6 photos | Might have solved the mystery myself. I have enlarged the drawings in the manual and can now see that the hex-headed screw is not intended to engage with the spindle. Since this drill revs to 3000/min, I now think the screw is a mass balance. |
Robbo | 30/03/2015 10:15:22 |
1504 forum posts 142 photos | Have seen a similar arrangement on a different machine where the screw is used as a jacking screw to lift/keep the pulley clear of the drive gear underneath to prevent friction/binding. Of course it needs to be slacked off when running, once the head is locked in either backgear or normal. Equally of course this may have nothing to do with your Q&S! |
Dave Halford | 31/03/2015 12:06:38 |
2536 forum posts 24 photos | Posted by charadam on 28/03/2015 23:38:38:
Might have solved the mystery myself. I have enlarged the drawings in the manual and can now see that the hex-headed screw is not intended to engage with the spindle. Since this drill revs to 3000/min, I now think the screw is a mass balance. I've not got the manual, but my QDM is the same - a balance weight, otherwise the gear shift takes too long to operate. |
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