TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 THREADED INSERT REPLACEMENT 0030 00 INSPECTION 1. When replacing threaded inserts, inspect component threads for wear or stripping. a. If component threads are damaged, and a standard insert is in use, install an oversize insert. Go to Repair. b. If component threads are damaged and a lock-ring type insert is in use, component must be replaced. Go to End of Work Package. c. If replacing a lock-ring type insert in an undamaged component, go to Installation, step 1. d. If replacing a standard insert with a standard insert, go to Installation, step 8. NOTE If component threads are not damaged but internal threads of insert are damaged, either type insert may be replaced. REPAIR 1. Bore out tapped hole (A) in component (8). a. Using portable electric drill and step drill (10) for oversize inserts, bore tapped hole (A) to counterbore depth (B). WARNING Compressed air can injure you and others. Do not aim air at personnel. Do not use more than 30 psi. Always wear goggles. 2. Clean hole (A). a. Using compressed air, blow metal chips out of hole. 3. Tap hole (A). a. Coat thread cutting tap (11) for oversize insert with engine oil. b. Using tap wrench and tap (11) cut threads until tap bottoms. 4. Clean newly tapped hole (A). a. Using compressed air, blow out metal chips. 5. Go to Installation, step 8. A A 8 10 11 A B 8 A WP 0030 00-3