1. Locate lower engine mounts, p/n 6B6-5. 2. Cut shims to install under part, per dwg 6B10. 3. Pilot drill aft hole in 6B6-5 with #40 bit. 4. Tape parts in place. 5. Back drill aft hole with #40 bit, and cleco. 6. Check positioning. 7. Mark location of forward hole on lower front longeron, and center punch. 8. Pilot drill with #40 bit. 9. Check alignment. 10. Open hole for AN3 bolt with 3/16" bit. 11. Temporarily install AN3 bolt and tighten. 12. Remove aft cleco, and open hole for AN3 bolt with 3/16" bit. 13. Temporarily install AN3 bolt.
