If plain solid disk was removed, perform steps 3 and 4. If plain solid disk was not removed, go to step 5.
3 Drill out any portion of plain solid disk remaining in hole of knob (25) using 0.125 (1/8) in. twist drill.
4 Install headless straight pin (31), compression helical spring (30), and plain solid disk (29) in side of knob (25). Disk is to be flush to 0.010 in. (0.025 cm) below outer diameter of knob (25). Stake rim of hole in three places.
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