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micman
07-02-2008, 01:09 PM
I have a MS1250LS 12 inch Mitre that I need to repair the non-working brake on and replace the brushes. What parts are needed and where do I purchase them on line. Thanks for your help in advance.
wbrooks
07-02-2008, 02:41 PM
Replacing the brushes may cure the brake issue. Some parts available here (http://www.m-and-d.com/index.html)
micman
07-15-2008, 05:29 PM
Replaced the brushes but it didn't cure the problem. What's next?
wbrooks
07-15-2008, 07:40 PM
Next on the list is the switch. It has two sets of contacts. Not sure if you can get the switch apart but if you can you may be able to clean the internal contacts. The N/C contacts are likely not closing fully so the breaking current can not be applied to the field.
See the wiring/parts diagram (http://www.ridgid.com/ASSETS/E6119E4776DB4335873B5800E3DC9BC0/MS1250LZ1_975_PL.pdf)
joe_d
07-21-2008, 05:58 PM
has replacing the switch solved the brake problem for others. I don't recall seeing posts where the switch has definitely solved the problem.
micman
07-26-2008, 10:51 AM
I took the switch apart which is real easy. It was dirty inside from arcing so I cleaned all the contacts and put it back together. Same thing brake is still not working.
wbrooks
07-27-2008, 12:32 AM
Is there continuity through the braking coils?
micman
07-29-2008, 04:41 PM
Could you explain how I would check for continuity thur the braking coils with my ohm meter? Thanks
garager
07-29-2008, 05:39 PM
Are you sure your shaft bearings isn't bad? Does the blade ever slow down in a cut or gets stopped? Just curious....
wbrooks
07-30-2008, 12:13 PM
Could you explain how I would check for continuity Thur the braking coils with my ohm meter? Thanks

Look at the wiring diagram on page 12 of the link provided

Unplug the machine and hold the trigger open you should have resistance between the red brush lead and the gray brake lead

See the wiring/parts diagram (http://www.ridgid.com/ASSETS/E6119E4776DB4335873B5800E3DC9BC0/MS1250LZ1_975_PL.pdf)
micman
07-30-2008, 09:12 PM
No continuity when switch is pulled to running/cutting position, continuity when switch is in off position.
micman
08-01-2008, 12:00 PM
I rechecked and there is no resistance in either open or closed positon.