614L-8 ADF Control Unit Overhaul Manual Dated July 15, 1962. 8th Revision May 1, 1969. TD-577B, 523-0755493-801113
Contents: Description and Operation, Disassembly, Cleaning, Inspection/Check, Repair, Assembly, Fits and Clearances, Testing, Troubleshooting, Storage Instructions, Special Tools, Fixtures and Equipment, Illustrated Parts List