Class 25/33: Step 11- Brush & Spring Fitting

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  • Open the sliding arm which covers the copper brush holder, being careful not to push it further than it is willing to go. With tweezers drop a brush into the brush holder as per picture one. Notice which way up the carbon brush is – the thin end is what the spring will be seated on, hence this should be at the top when dropping the brush in. If in doubt, remember thin end up against spring.
  • Next drop the spring in on top of the brush.
  • Take a flathead screwdriver and a pair of tweezers. Hold the spring in place with the flathead screwdriver so that it is flush with the top of the chassis and now slide the brush clip arm over the spring using the tweezers. Move the screwdriver out of the way as you do so. You could use two screwdrivers for this job, it doesn’t have to be a pair of tweezers.
  • Now repeat the above three steps for the opposite brush and spring.

Note: There is an anomaly in these pictures in that there is no base plate attached. However, we attached this in the previous step and the point of these pictures is to show how the brush and spring are inserted.


 

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