Gallery, Projects and General > How do I??
poorly seig c3
davidcurtis021:
--- Quote from: John Rudd on June 07, 2017, 08:55:59 AM ---So, are you now thinking that the broken fuse holder is the reason why your machine isnt operational?
--- End quote ---
i' can only wish but as i had a good reading at both ends yesterday morning when i started taking it apart i suspect i have managed to break it somehow and the broken fuseholder is just an aditional problem. however when i get a new fuseholder in place it might be prudent to start investigating from the beggining again.
John Rudd:
Here's a better wiring diagram....
http://littlemachineshop.com/reference/drawings/4507-XMT-C3Lathe.pdf
It shows the chuck guard interlock, if yours has one...
davidcurtis021:
--- Quote from: John Rudd on June 07, 2017, 11:45:47 AM ---Here's a better wiring diagram....
http://littlemachineshop.com/reference/drawings/4507-XMT-C3Lathe.pdf
It shows the chuck guard interlock, if yours has one...
--- End quote ---
thanks for that John. it proved very useful as it reminded me that one thing i had'nt checked so far was the microswitch on the chuck guard i dont know whether it is NO or NC but in any case a continuity test showed out of range for both ways so i know that is duff and am more hopeful that it was the root cause of my problem. when my fuseholder comes hopefully tommorow i will put a link across k3 and k4 and pray for success. Do you think that could have been the problem.
John Rudd:
Its very difficult to determine root cause of a problem without having 'hands on' during the investigation....
One can only speculate...
I'll wait until you resolve the fuse holder issue....
davidcurtis021:
Postman came and went without leaving me with a new fuseholder so took matters into my own hands and constructed a temporary holder from plastic tube
as anticipated other than give stable readings for the multimeter no improvement so next was to bridge the teminals that connected the chuckguard micro switch K3 and K4 on the drawing
On recconeting to the mains and releasing the emergency stop i now have power through the system and a small turn on the speed control brought the motor into life.
just like to say thank you to all who made suggestions and especially John for his guidance.
the upside is now i dont have to spend on new electrics other than a microswitch i can lavish some cash on giving the machine a complete overhaul starting with the headstock and possible bearing change. followed by getting rid of the horrible digital readouts.
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