Why must you never turn the adjusting nut on an automatic slack adjuster in the direction that increases slack during inspection, and what damage can occur?

1. It will cage the trailer parking spring permanently
2. Turning it against the internal clutch mechanism can damage the self-adjusting gears, causing the ASA to fail to adjust automatically in the future
3. It will trigger the low air warning light on the tractor dashboard
4. It will block the oil flow to the S-cam bushings