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12 Mitre Brake

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  • 12 Mitre Brake

    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.

  • #2
    Re: 12 Mitre Brake

    Replacing the brushes may cure the brake issue. Some parts available here

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    • #3
      Re: 12 Mitre Brake

      Replaced the brushes but it didn't cure the problem. What's next?

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      • #4
        Re: 12 Mitre Brake

        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

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        • #5
          Re: 12 Mitre Brake

          has replacing the switch solved the brake problem for others. I don't recall seeing posts where the switch has definitely solved the problem.
          Baseball is wrong - man with four balls cannot walk.

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          • #6
            Re: 12 Mitre Brake

            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.

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            • #7
              Re: 12 Mitre Brake

              Is there continuity through the braking coils?

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              • #8
                Re: 12 Mitre Brake

                Could you explain how I would check for continuity thur the braking coils with my ohm meter? Thanks

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                • #9
                  Re: 12 Mitre Brake

                  Are you sure your shaft bearings isn't bad? Does the blade ever slow down in a cut or gets stopped? Just curious....
                  Great Link for a Construction Owner/Tradesmen, and just say Garager sent you....

                  http://www.contractorspub.com

                  A good climbing rope will last you 3 to 5 years, a bad climbing rope will last you a life time !!!

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                  • #10
                    Re: 12 Mitre Brake

                    Originally posted by micman View Post
                    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
                    Last edited by wbrooks; 07-30-2008, 12:55 PM.

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                    • #11
                      Re: 12 Mitre Brake

                      No continuity when switch is pulled to running/cutting position, continuity when switch is in off position.

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                      • #12
                        Re: 12 Mitre Brake

                        I rechecked and there is no resistance in either open or closed positon.

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