CMP brake question

[Phil Waterman]

Ok finished replacing the Brake Adjustment Cam Tensioner Springs.

Found two sources of springs that looked like the right size and spring tension, more on that later.

First step was cutting new adjuster bolts with the squared of area for the cam plate to lock into.

Cam 1.jpg Cam 2.jpg

I cut the flats by chucking the bolts up in lath head, and cutting the flats with High Speed Grinder attached to the tool head. This could be done with a flat file and vice. Either way you want to get as tight a fit as possible.
The bolts are Grade 8 1/2 bolts, found that course thread work better than fine thread.

Cam 3.jpg

Once the bolts are notched down the correct length for the spring with a spring washer and cam plate you can check the torque required to turn the bolt head

Cam 4.jpg